Electroplating can be divided into hard gold and soft gold. Hard gold electroplating is an alloy, so its hardness is relatively hard. It is suitable for use in places requiring force and friction. It is generally used as the edge contact point of PCB (commonly known as golden finger). Soft gold, On the other hand, is commonly used to connect aluminum wires On the COB (Chip On Board) or On the touch surface of mobile phone keys, and more recently, it is widely used On both sides of BGA boards. The distinction of hard gold and soft gold, it is the component of this layer of gold that goes up finally plating, when gold-plating can choose electroplate pure gold or alloy, because the hardness of pure gold is softer, so also call "soft gold".

Function of auxiliary components in hard gold plating PCB plating solution:

Boric acid ACTS: as a buffer, which can maintain a relatively balanced PH value of hard gold-plated PCB plating solution with a concentration of 35~55g/l;

Nickel chloride: it is an anode activator, which can effectively promote the dissolution of anode nickel Angle and avoid the passivation of anode;

Brightener: can improve the brightness of the coating, the brightener used for acr-3010, the control range is 25~35ml/l; 

Anti-pinhole agent: it can effectively drive away the hydrogen bubbles on the coating and prevent the generation of pinhole defects;

Brightener and anti-pinhole agent supplement method: in order to add less frequently appropriate, one time do not add too much to the hard gold plated PCB plating solution.

1. Prefabricated houses are mostly operated in factories, so it is easier to control quality (Q.C) and save labor costs.
2. Prefabricated houses are basically modular or plate-based, and the construction site is directly assembled, thus reducing the demand for on-site skilled workers and skilled workers.
3. The modularization and plate characteristics of prefabricated houses determine that the production and construction period of prefabricated houses is greatly shortened and the construction efficiency is extremely high.
4. The prefabricated housesmostly adopt LGs (light steel structure), SIPs (structural insulation board system), ICF (thermal insulation cement structure) and so on. The materials used are green and more environmentally friendly.

The main problems to be solved in prefabricated houses

1. Prefabricated houses are mostly completed in factories. Now the highest level of prefabricated houses is modularization. From the factory to the construction site, transportation has become a major problem.
2. Prefabricated house is very popular in North America, but it is still a new thing in China. Therefore, whether it is easy to install, durable, environmentally friendly and so on, has become a problem we need to solve.
3. The most important problem to be solved for prefabricated houses should be whether they conform to local building codes.

Dynamic light scattering (DLS), also known as photon correlation spectroscopy (PCS), is a commonly used characterization method for nanoparticles. DLS particle size analyzer has the advantages of accuracy, rapidity, and good repeatability.

With the update of the instrument and the development of data processing technology, the current dynamic light scattering instrument laser particle size analyzer not only has the function of measuring particle size, but also has the ability to measure Zeta potential and molecular weight of large molecules.

The principle of DLS of dynamic light scattering is that nano-particles, emulsion droplets and molecules in suspension are also moving in a similar way under the collision of Brownian motion of liquid molecules. When a laser strikes these dynamic particles or molecules, these moving particles cause a fluctuation in the intensity of the scattered light, and the frequency of the fluctuation depends on the velocity of the particle, which depends on the size of the particle (because the smaller the particle size, the faster it moves under the impact of the particle Brownian motion).

Therefore, the velocity of particle Brownian motion will be obtained by analyzing the intensity fluctuation of scattered light, and the particle size and particle size distribution of nanoparticle can be obtained by using Stokes-Einstein equation.

Automatic EDM equipment is the ideal equipment for processing artificial defects of pipe rod standards in non-destructive testing work. The flaw detector has the characteristics of simple operation, safety and reliability, high production precision, fast processing speed, and convenient carrying by ultrasonic flaw detection. It can process artificial defects on non-ferrous metals and ferrous metal tubes and bar standards. Hardness sorting can process longitudinal, transverse, and oblique rectangular groove injuries on the inner and outer surfaces of the tube and rod. The core part of the ndt equipment adopts advanced digital processing technology and system integration technology. With modern advanced digital control and servo technology, the injury process is fully automated, with high processing precision, fast speed, easy operation and performance at the international advanced level. The entire instrument is portable and easy to carry and has low requirements for the environment of steel pipe scratching.

How electronic fence works

After the pulse generator (main unit) is energized, the transmitting port sends a pulse voltage to the front fence. The time interval is about 1.5 seconds, and the pulse stays on the fence for about 0.1 second. After the loop is formed on the front fence, the pulse is returned to the host for reception. Port, this port receives the feedback pulse signal; the host also detects the resistance between the two transmitters. If the front fence is broken and the circuit is broken or shorted, the receiving port of the pulse host can not receive the pulse signal or the resistance between the two transmitters is too small, the host will issue an alarm.

Fence alarm

Through the working principle of the electronic fence, no matter what voltage working state the pulse host is in, when the fence is damaged, the receiving port can not receive the pulse signal, the pulse host will alarm; similarly, when the two electronic cables are short-circuited When the resistance is very small, the pulse master will also alarm.

We are one of the leading non destructive testing equipment manufacturers, RFQ today!

What is the vacuum casting?
The vacuum casting technology which uses prototype (SLA laser rapid prototyping china piece, CNC products) to make silicone mold under vacuum, and is poured under vacuum conditions, such as PU, ABS, etc. Vacuum casting is also used to clone the prototype or copy the piece. It has different types including vacuum mould casting, vacuum pressure casting, vacuum sand casting and so on. This method is especially suitable for small batch production. It is a low-cost solution to solve experimental production and small batch production in a short time, and can also meet the functional test proofing of some structurally complicated engineering samples.

Vacuum Casting Process

1. Make a silicone mold by using the master made by CNC machining and 3D printed.

2. Put the silicone mold into the vacuum molding machine.

3. Inject liquid epoxy resin and heat to cure.

4. After the curing is completed, take out the same part as the Master from the silicone mold, and one silicone mold can be used for 20 times.

Vacuum Casting is suitable for small batch production, which can greatly reduce production costs, increase production efficiency and shorten the construction period.

Applications for Vacuum Casting

It is mainly used for product copying and mold making in various industries. 
The outer casing of consumer electronics: 

Auto parts:

Industrial parts: 

Vacuum Casting Materials

We offer a wide range of material options: ABS, PP, PC, PMMA, POM, high temperature resistant materials, soft rubber, silicone rubber, etc. Varieties of materials are available to make silicone molds comparable to injection molded parts. The following pictures are rubber, PC-like material, ABS-like material, POM-like material and transparent material.

Advantages of Vacuum Casting

• The cost is low and the production cycle of the product is relatively short. Less waste and processing costs are much lower than CNC machining and 3D printing.
• It is suitable for the processing and production of small batch products. After making an original version, it can be copied according to the original version, and the production efficiency is high.
• Good mold operation. The soft molds after curing are all transparent or translucent, have good tensile strength, and are easy to cut and shape.
• The probability of processing failure is small. As long as there is no problem with the original, the copy will naturally not go wrong.
• Good repeatability. The silicone for molding has good fluidity before curing, and the fine structure and decoration of the model can be accurately maintained with vacuum defoaming.

 
We have the world's most advanced vacuum casting equipment, and provide post-processing lines such as polishing, painting and assembly. We can provide small batch production of small and medium-sized parts quikly. If you are looking for reliable vacuum casting service, please contact our professional team at info@duchgroup.com or contact us by visiting our website, we will provide quotes and suggestions free of charge.                                                                      

                                                            

How to protect your precious serum which keep your youngth? How to present your precious serum to your clients and attrack them when first glace? The package make this happen, we have rich experience in cosmetic box design and production and pack out, we can design the box sepecial for you to make your products more interesting and valuable.

Type: Serum Packaging Box

Size: Customized

Printing color: CMYK, 4,6 or more color available

Print: UV print

Material/Paper stock: Flexible package material paper

Insert option: Customized

Surface finishing: UV, gloss, matt/gloss laminate, hot stamping, hot-stamping, Embossing, Debossing, UV Coating, etc.

Advantage: 100% hand made, High-Quality fashion look, Luxury, Eco-Friendly Material, all meet export standard

Uses: cosmetics, health products, sporting goods, stationery, etc.

Package: with PE bag pack in corrugated master shipping carton box and standard pallet

Design: Your own design and OEM welcome

Design software: AI, PDF, PSD, CAD, ARD, Pro, 3D Max

Our paper straws are perfectly suitable for decorating your special events, such as Christmas, Valentine's day, Halloween, Wedding party, Birthday, and they are ideal for indoor or outdoor parties. With our special paper straws, you can spend a wonderful time with your family, friends and lovers.

Product Feature:

Our holiday paper straws can resist high temperature and nature decompose, and produced by 100% recycled food grade paper and environmental friendly water ink.

In response to the global plastic ban, paper straws will replace the plastic straws in recent days. The paper straws have advantages as follow:

1)All paper straws are made by 100% recycled paper, and they are are safe to the body.

2)They are durable, are not soggy after a full glass of water/tea.

3)They are disposable, biodegradable, so using paper straws can protect our environment.

They have different sizes of patterns and colours as you need.

Varied pattern design makes it suitable for many different occasions as you want. Normally, wholesale paper straws are packed in 500pcs/bag, can mix with other colour. Of course, we have the special small package with 12pcs/20pcs/24pcs/poly bag with header card/paper box. We can also supply individually wrapped pakcing if you need.

Why paper straws:

Compared with plastic straws, paper straws are favorited by consumers due to their environmental-friendly and biodegradable materials. They are health, harmless and safety for people's body. Most importantly, paper straws can help to protect the environment world. Make the change today!

Who we are:

Ningbo Jiangbei Shenyu Industry and Trade CO., Ltd. is a professional paper straws manufacturer. Custom printed paper straws with custom design. No middle man, directly to your hands. We provide free artwork, free sample. OEM and Wholesale. 100% satisfaction guarantee.

Sample policy:

1. Send sample to the appointed address
2. Sample cost depends on your print logo and quantity
3. Sample time: 7~15 days
4. 

Natural rubber, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. 

Currently, rubber is harvested mainly in the form of the latex from the rubber tree or others. The latex is a sticky, milky colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called "tapping". The latex then is refined into rubber ready for commercial processing. In major areas, latex is allowed to coagulate in the collection cup. The coagulated lumps are collected and processed into dry forms for marketing.

Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. In most of its useful forms, it has a large stretch ratio and high resilience and is extremely waterproof.

Centrifuged latex is processed into final articles by dipping, extruding, and coating. Different articles have different physical and chemical requirements, which means that the latex used in their manufacture must be modified by the addition of a great variety of substances that give each "formulation" its unique characteristics. 

These characteristics are well-specified and must be carefully controlled. 

Skim latex is generated during natural rubber processing centrifuged into fresh latex to become concentrated latex. Skim latex is a raw material for producing skim rubber block according to the low content of rubber particles in the range of 4-8% DRC.

Traditionally, skim latex is treated with sulphuric acid to produce cheap, low-quality rubber products of 5% skim rubber content. Not only does this method consume large quantities of the acid, which results in high production cost, more importantly, causing harmful pollutants to the environment.

JIUWU offers a safer, cheaper and greener option to produce skim rubber products of high quality. Through ceramic membrane filtration system, the rubber content in recovered skim latex can be concentrated to more than 15%, the same value in natural rubber without any form of chemical treatment. At the same time, permeate can be recycled.

Hydraulic balance valve, also known as self-operated balance valve, flow control valve, flow controller, dynamic balance valve, flow balance valve, is an intuitive and simple flow adjustment control device. The application of the hydraulic balancing valve in the pipe network allows the flow to be set directly according to the design. The valve automatically eliminates the flow deviation caused by the residual head and pressure fluctuations of the pipeline under the action of water. The set flow rate is maintained regardless of changes in system pressure. These functions of the valve make the pipe network flow adjustment complete once, and the network adjustment work becomes a simple flow distribution, effectively solving the hydraulic imbalance of the pipe network.

Chinese name: hydraulic balance valve

Medium temperature: 0-150 ° C

Working pressure: 1.6MPa

Working temperature: 150 ° C

Scope of application

The hydraulic balance valve is mainly used in centralized heating (cold) and other water systems to distribute the flow of the pipe network as needed, eliminate the hydraulic imbalance of the water system, solve the problem of uneven heat and heat, and save energy and save 15%-20%. .

Performance characteristics

(1) It can set the flow according to the design or actual requirements, which can automatically eliminate the pressure difference fluctuation of the system and keep the flow rate unchanged.

(2) It overcomes the uneven heat and cold of the system and improves the quality of heating (cooling).

(3) It completely solves the contradiction that the pressure difference between the proximal end is large and the pressure difference at the distal end is small.

(4) It can reduce the amount of circulating water in the system and reduce the resistance of the system.

(5) It can reduce the design workload, and does not require complicated hydraulic balance calculation on the pipe network.

(6) It can reduce the difficulty of network adjustment, simplifying complicated network adjustment work into simple traffic distribution.

(7) It can eliminate the traffic redistribution work when the heat source of the multi-heat source pipe network is switched.

(8) The flow rate display values are all randomly calibrated on the test bench, and the flow rate (m3/h).

Technical Parameters

Working pressure difference: 20-600KPa;

Flow accuracy: 5%.

Material and life:

Body - high quality grey cast iron

Internals - brass, stainless steel

Spring - stainless steel

Diaphragm - EPDM

Lifetime - more than ten years

Selection:

It can be selected according to the pipe diameter.

It can be selected according to the maximum flow rate and the flow range of the valve.

Packaging is the brand communications tool that gets up close and personal. Clear plastic packaging from HLP Klearfold is the brand communications tool that connects consumers directly with your products. High-quality, well-executed transparent plastic packaging offers significant advantages over plain paperboard packaging:

Three-dimensionality and a clear view of the package contents

Exciting aesthetics and a value-added perception

An elegant appearance that supports premium product positioning

Unique structural and graphic designs not achievable in paperboard

And a proven record of enhancing brand performance

A recent eye-tracking research program conducted at Clemson University supports these claims. When printed plastic carton were compared to equivalent paperboard cartons, test participants were generally more attracted to, and preferred the clear packages; and they typically had better perception of the products packaged within. They also preferred seeing an actual product within a clear carton rather than seeing an image of the product printed on an opaque, paperboard package.

As one of the plastic box manufacturers in China,Hlpklearfoldpvc will keep strive to offer you  visual packaging and other custom plastic box with high quality.

Many types of adapters can be used to charge lithium-ion batteries and power the system, and the electrical specifications of each rechargeable lithium battery are usually different. This requires system designers to build portable devices, which meet the safety and reliability requirements when using different adapters. Enhance robust security performance. Dongjin fully integrates input overvoltage, input overcurrent, battery overvoltage and reverse input polarity protection, which can significantly improve the safety of battery power supply system.

The ultimate purpose of parallel lithium battery of rechargeable lithium batteries is to increase capacity. Therefore, parallel lithium battery has some different characteristics in design compared with single lithium batteries, mainly reflected in the consistency of charging current design and parallel batteries.

Generally speaking, the characteristics of parallel lithium batteries are as follows: the voltage is constant, the capacity of batteries is added together, the internal resistance is reduced, and the power supply time is prolonged. The core content of parallel charging is the magnitude and function of parallel current. According to the theory of parallel connection, the trunk current equals the sum of all branch currents. Therefore, in order to achieve the same charging efficiency as a single lithium battery, the charging current should be the sum of the current of N lithium batteries.

Under the formula of I = U / R, this design is reasonable. However, the internal resistance of parallel batteries will also change. According to the formula of parallel internal resistance, the total internal resistance of two parallel lithium batteries is equal to the ratio of the product of internal resistance of two batteries to the sum of their internal resistance, and the parallel resistance will decrease with the increase of the number of parallel batteries. Therefore, the efficiency of parallel charging of lithium batteries can be realized on the basis that the current of lithium batteries in parallel is less than the sum of the current of N lithium batteries in parallel.

Generally, after parallel connection of lithium batteries, there will be a charge protection chip to protect the lithium batteries. As one of the excellent manufacturers of rechargeable lithium batteries, battery of Dongjin has fully considered the changes of lithium batteries after parallel connection, and also designed the current and selected the batteries according to the above requirements. Therefore, users need to charge lithium batteries on time according to the instructions of parallel lithium batteries, so as to avoid possible damage to batteries caused by incorrect charging methods.

Aluminum printed circuit board (PCB) is a kind of PCB:

Aluminum printed circuit board (PCB) is a kind of metal base copper clad board with good heat dissipation function. Generally, a single panel is composed of three layers, which are circuit layer (copper foil), insulation layer and metal base. For high-end use there is also a design for double panels, the structure of the circuit layer, insulation layer, aluminum base, insulation layer, circuit layer. Very few applications for multilayer board, can be made of ordinary multilayer board and insulation layer, aluminum base laminated. 

Single aluminum substrate: is only one layer of conductive graphics layer and insulation materials plus aluminum (substrate). 

Double-sided line aluminum substrate: there are two layers of conductive graphics layer and insulation material plus aluminum (substrate) superimposed together. 

Multilayer printed aluminum-based circuit board: a printed circuit board made by bonding three or more layers of conductive graphics with alternating layers of insulating material and aluminum (substrate).

According to the surface treatment method to be divided into: 

Gold plate (chemical thin gold chemical thick gold selective gold deposition) 

Electrogold plate (full plate electrogold finger selective electrogold) 

Tin jet plate 

Molten tin plate 

Heavy tin plate

Silver plate 

Electrosilver plate 

Palladium plate

Aluminum printed circuit board composition

1. Circuit layer

The circuit layer (generally using electrolytic copper foil) is etched to form a printed circuit for the assembly and connection of devices. Using the same thickness and wire width, the aluminum substrate can carry higher current than the traditional fr-4. 

2.Insulation layer

Insulation layer is the core technology of aluminum substrate, mainly playing the role of bonding, insulation and heat conduction. Aluminum substrate insulation layer is the largest thermal barrier in power module structure. The better the heat conduction performance of the insulation layer is, the more beneficial it will be for the heat generated during the device operation to diffuse, and the more beneficial it will be for reducing the operating temperature of the device, so as to improve the power load of the module, reduce the volume, extend the service life and increase the power output.

3. 
   The metal base

The metal used for the metal base insulation metal substrate depends on the comprehensive consideration of the thermal expansion coefficient, thermal conductivity, strength, hardness, weight, surface state and cost of the metal substrate.

1. Paper Pulp Additives

Apply CMC into the paper pulp (add before pulping and alums mixing). CMC can disperse fiber, improve uniformity and strength of paper (bursting strength and stiffness). Using CMC with the same beating degree can shorten beating time, conserve energy. Dosage of CMC is 0.2%-0.8% of paper pulp. Can use CMC RM8-1. With the add of CMC, paper tension increases 40%-50%, tearing strength raises 50%, flexibility increased 4-5 times. Meanwhile, paper quality is of smoothness with good ink absorbency and clear printing edge. It's much better to use hard water during production.

2. Surface Sizing Agent

Sound surface strength is required during high-speed printing. When there is a low beating degree or high filling content, usually adopt a surface sizing method to increase the surface strength of paper and paperboard, reduce surface absorption. Through surface sizing, cmc textiles holes of paper are sealed by a layer of sizing film. It can reduce the absorption of moisture in the air, as well as evaporation of moisture in the paper. Prevent paper from rolling up and crushing. Improve the paper absorption of ink and oil. Has the effect of grease-proof, waterproof and oil-resistant.

To avoid paper and paperboard surface lint and powder falling, can use CMC solution with low viscosity and medium viscosity. With medium viscosity, CMC solution can get a layer of compact grease-proof film. Usually, use CMC solution with 1%-2% concentration can get 0.1g/m2--0.5g/m2 sizing. Users can also decide CMC viscosity according to the different base paper. It can mix low and medium viscosity CMC. High purity CMC has a good property of paper film-forming. Instead, Industrial grade CMC with low purity has poor performance on paper film-forming. Dosage of CMC is 1/2-1/3 comparing with that of starch. Especially that modern paper-making factories conduct sizing with the high-speed machine, which can only apply CMC solution with lower viscosity and high purity.

3. Coating Agent

Coating whiteboard paper and chrome paper usually need coating pigment. Use CMC in coating color can improve water retention and rheology effect. CMC is featured by characteristics of good dispersion and binding, with the dosage 0.5%-2.5%. The exact dosage is according to different viscosity and speed of machines.

Metal Powder Flowability Tester

HFlow-1 powder flowability tester tests the flowability of metal powder by measuring whether the sample can flow through the 2.5mm standard funnel.
The design and production of HFlow-1 Hall flow meter is based on the Chinese national standard GB / T1482-2010 and international standards ISO4490-2008.

• Measurement: Powder flowability
• Testing sample: metal powder
• Technology: Hall flow meter

With the decrease of forest resources and the rise of global temperature, the voice of protecting valuable forest resources and seeking new materials to replace solid wood is rising. At the same time, the increasing plastic waste and various natural plant fiber materials have become a major headache for all countries.

In China, a nationwide strict ban on crop straw incineration has been carried out since 2017. Previously, the government encouraged crop straw smashing and returning to the field on the grounds of increasing soil fertility and fluffy degree, and keeping moisture. It is beneficial to the utilization of farmland. However, the crop straw returning to the field after smashing did not become part of the soil as expected, but remained massive after many years, and became the survival carrier of harmful insects, causing disasters to crops. For farmers, it directly leads to the reduction of output and income. Under this severe situation, how to utilize crop straw has become the top priority of governments at all levels. At the same time, it has also become a great opportunity for the development of wood plastic composite china industry.

Traditional anti-corrosive wood, plywood, heavy bamboo products and other materials have congenital morbidity. Their short life, easy water absorption, expansion,

deformation, mildew, cracking and other problems make many contractors of outdoor projects and scenic spots have a headache because of the annual maintenance and renovation.

Wood plastic composites have the dual advantages of plastics and wood. They are not only waterproof, moisture-proof, mildew-proof and termite-proof, but also have excellent characteristics of long life, zero formaldehyde, pollution-free, pollution-free and it is recyclable. At the same time, wood-plastic composites have good plasticity, and the quality of non-cracking, non-expanding and non-deforming of wood plastic composites saves the cost of later maintenance. As a result, wood-plastic composites have naturally become ideal wood substitutes.

Such a huge development space is both an opportunity and a challenge for China's wood plastic composite application processing and marketing enterprises: while vigorously developing export trade, we should also increase the popularization and promotion of China's wood plastic composite application market. For manufacturing enterprises, it is necessary to further reduce product costs and steadily improve product quality. At the same time, the research and development of new products should be strengthened. We should promote the transformation and upgrading of wood-plastic materials from decorative to structural application, so as to improve and possess the core competitiveness, seize the high-end market at home and abroad, maximize benefits and achieve industrial continuity.

An electric pulse is a pulse generated by electrons, and a pulse is a process of changing a voltage in a short time. Electropulsing is an unsteady current field generated by a capacitor or an intermittent source. The alternating current we use can be regarded as a pulse current, and one of the cycle processes can be regarded as an electrical pulse. Modern electric pulse technology has developed to the trend of higher frequency and high energy peaks. It has a wide range of applications in materials testing, biology, medicine, nuclear energy, military and other fields. The main working principles are high energy Joule heating effect, hot pressing effect, high-frequency magnetic induction effect, electroforming and so on. Common waveforms are a rectangular, sinusoidal, rectangular, sinusoidal, group, and so on.

The EDM notch is mainly used for the production of standard sample tubes in the non-destructive testing industry, and is an indispensable auxiliary device for nondestructive testing. It can be used to make internal and external longitudinal defects on the sample tube, internal and external lateral defects, and can also make oblique defects at a certain angle according to different requirements of users, and can also make thickness measurement standard sample tubes or layered standard sample tubes. The shape has a U-shaped groove, a rectangular or square groove, a flat bottom hole, and the like. The machining precision is high, the speed is fast, the operation is simple, the degree of automation is high, and the machining depth can be set in one time, and the error is within the allowable tolerance range. The ndt testing equipment is light and easy to carry, and can be used in different field environments.

 The main features of the EDM Notch:

• Small size, light weight and easy to carry
• High power, fast scratching, less than 10% error
• The distance between the internal injury position and the tube end is not limited, and the position of the wound is accurate
• Single-chip control, simple operation, intelligent and efficient, practical
• It is only necessary to clean the circulating oil normally, and it is basically maintenance-free

We are one of the leading EDM machine manufacturers, RFQ today!

What is rapid prototyping?
Rapid prototyping is a kind of professional manufacturing technology that is used to produce high-quality entity models of three-dimensional designs. Prototypes are useful for design improvements and can be used as stepping stones for comprehensive production or engineering testing. With the rapid prototyping china, you can manufacture parts or the products to test for the component fit and function. According to the analysis results, you can make further adjustments (about the design, shape, materials, etc.) before the products finally enter the market. It can help you effectively save time and costs. A lot of our customers need to manufacture a entity component quickly to verify the feasibility of a design or a part. Nowadays, various kinds of rapid prototyping processes are available. You can choose the process which best suits your needs. With only thirty years around of development, rapid prototyping technology, as its name implies, has already been widely used in many areas. Meanwhile, the rapid prototyping services are still growing at a fast speed.

Different Rapid Prototyping Processes

Prototypes can be made through different rapid prototyping processes. With thirty years around of development, a variety of prototype manufacturing processes are available. In addition, they are continuing to evolve. Since companies or customers have different requirements and demands, different types of rapid prototyping processes will be chosen. So how does rapid prototyping work? Reading the following contents and you will know which rapid prototyping service suits you best.

 

SLA（StereoLithography）

• Description: SLA is a photo-curing molding technology, which refers to the method of forming three-dimensional solid layer by layer through the polymerization reaction of liquid photosensitive resin by ultraviolet irradiation. The work piece prepared by SLA has high dimensional accuracy and is the earliest commercial 3D printing technology.
• Printing Material: Photosensitive Resin
• Strength: photosensitive resin is insufficient in toughness and strength and is easily broken. At the same time, under high temperature conditions, the printed parts are easy to bend and deform, and the bearing capacity is insufficient.
• Features of finished product: SLA printed workpieces have good details and smooth surface, which can be colored by spray painting and other processes.

 

Selective Laser Sintering (SLS)

• Description:SLS is a selective laser sintering technology, similar to SLM technology. The difference is the laser power. It is a rapid prototyping method that uses infrared laser as a heat source to sinter powder materials and form three-dimensional parts layer-by-layer.
• Printing Material:Nylon powder, PS powder, PP powder, metal powder, ceramic powder, resin sand and coated sand (common printing materials: nylon powder, nylon plus glass fiber)
• Strength:material performance is better than ABS products, and the strength and toughness are excellent.
• Features of finished product:the finished product has superior mechanical properties and is suitable for direct production of measurement models, functional models and small batch of plastic parts. The disadvantage is that the precision is not high, the surface of the prototype is relatively rough, and it is generally required to be polished by hand, sprayed with glass beads, ash, oil and other post-processing.

Fused Deposition Modeling (FDM)

• Description: FDM is a melt lamination technology, that uses high temperature to melt materials, extrudes them into filaments through the print head, and builds up on component platform. FDM is the simplest and most common 3D printing technology, which is commonly used in desktop 3D printing devices.
• Printing Material：usually ABS or PLA wire
• Strength: PLA is brittle,its surface hardness is higher, and it is easier to break when bending. ABS parts are more resilient than PLA parts, and are easy to bend rather than break under pressure. Moreover, ABS has higher strength, better plasticity, and easier post-processing.
• Features of finished product: the printing layer is thick, the precision is poor, and the stratification of the surface is very obvious. Under high temperature conditions, the printed parts are easy to bend and deform, and the bearing capacity is insufficient.

 

CNC

• Description: CNC machining is a subtractive manufacturing process in which the software control system issues instructions to make the tool perform various required movements. In this process, various precision tools are used to remove the raw materials and make parts or products.
• Materials: CNC processing materials are quite extensive, including plastics and metals. Plastic hand model materials are: ABS, acrylic, PP, PC, POM, nylon, bakelite, etc.; Metal hand model materials are: aluminum, aluminum Magnesium alloy, aluminum zinc alloy, copper, steel, iron, etc.
• Strength: different materials have different strengths and are difficult to list
• Features of finished product: CNC machined parts have a smooth surface, high dimensional accuracy, and the best compactness, and there are a variety of post-processing options.

 

Vacuum Casting

• Description: vacuum casting technology is to use the prototype (rapid prototyping parts, CNC hand parts) to make a silicone rapid prototyping mold under vacuum condition. It also uses PU, ABS and other materials to pour, so as to clone the same copy with the product prototype.
• Material: ABS, PU, PVC, silicone, transparent ABS
• Strength: the strength and hardness are lower than the CNC hand parts. Common PU material is relatively brittle, toughness and high temperature resistance are poor. ABS has higher strength, better plasticity, and easier post-processing.
• Features of finished product: easy to shrink and deform; the accuracy is generally only 0.2mm. In addition, the vacuum casting hand parts can only resist high temperature of about 60 degrees, and is lower than CNC hand parts in strength and hardness.

 

Advantages of Rapid Prototyping

• High degree of automation in forming process
• Precise entity replication
• High dimensional accuracy. Dimensional accuracy can be up to±0.1mm
• Excellent surface quality
• Unlimited design space
• No assembly required
• Fast forming speed and shorter delivery time
• Saving raw materials
• Improving product design

 

Duch Group Provides:

Complete process equipment: we are the only independent manufacturer with large scale in China and can provide both small batch and large batch production services for subtractive manufacturing and additive manufacturing. We have self-developed high-speed intelligent 3D printing equipment, large CNC machining center, vacuum casting machine, low-pressure perfusion and other advanced equipment as well as post-processing production lines such as polishing, painting and so on.
Leading technology: with the latest technology in the world, four world-first 3D printing technology can be diversified, rapid, low-cost, accelerate the research and development speed of enterprise products, and achieve world-class production capacity.
One-stop 3d printing service: 3D printing integrated solution provider, with product development and service output capabilities from equipment, software, materials to cloud printing, can provide global users one-stop service from product design and development to final mass production.

 

Application of Rapid Prototyping

Shoemaking

3D printing is advancing the revolution of shoemaking industry with the aim of reducing costs, reducing outsourcing, greatly increasing flexibility and preparing for the era of personalized customization and tailoring. Whether through our on-demand production services or our advanced 3D printers, Vistar is happy to participate in this new industrial revolution with our customers.

Medical

It has a high requirement on accuracy and reliability related to the R&D and production of the medical industry. Vistar 3D printing has earned the support and trust from many hospitals and other medical clients through the advantages of on-demand manufacturing service.

Fashion and Cultural Creative
The additive manufacturing provides an entirely new medium for artists that can almost realize any idea. For the fashion designer, Vistar’ production solutions creat an exciting new age which has enabled designers to gain significant on product launches and personalization.

Automobile

The developed at top speed and innovation of the automotive industry is highly compatible with Vistar's manufacturing innovation. 3D printing and related technologies can significantly reduce time to market, as well as make the personalized customization possible.

Dentistry
3D printing technology is becoming more and more mature and popular in the dental market. The total value of dental components manufactured by 3D printing solution exceeded 4 billion US dollars in 2016. The era of digital dentistry is just beginning and Vistar can help you transition easily.

Electronic Product
Diversified electronic industry technology update with a high speed, but Vistar has always been able to adapt to this rhythm and provide customers with required services. Whether it's making new models quickly or making advanced stereo curable 3D printers, you'll be able to make your bold and subtle design more powerful.

Future of Rapid Prototyping

• The development of equipment to large-scale
• Diversification of Materials development
• From the ground to space
• Deep space exploration
• Benefit thousands of households

Yiwu Translator

How to get to China
China is located in the east of Asia near the Pacific West Coast. It's famous as the world's factory product sourcing.
There are some famous cities in China which have international airports, Guangzhou/Shenzhen/Shanghai/Beijing/Hangzhou.

There are some ways to get to these airports,

If you are from North America, such as America, you can take an airplane from Los Angeles International Airport（LAX）to Shanghai Pudong International Airport（PVG）

If you are from South America, such as Brazil, you can take an airplane from Guarulhos International Airport（GRU）to Shanghai Pudong International Airport（PVG）

If you are from Europe, such as England, you can take an airplane from London Heathrow airport(LHR) to Shanghai Pudong International Airport（PVG）

If you are from Asia, such as Malaysia, you can take an airplane from Kuala Lumpur International Airport(KUL) to Shanghai Pudong International Airport（PVG）

If you are from Africa, such as Ghana, you can take an airplane from Kotoka International Airport(ACC) to Shanghai Pudong International Airport（PVG）

If you are from Oceania, such as Australia, you can take an airplane from Sydney Kingsford Smith International Airport(SYD) to Shanghai Pudong International Airport（PVG）

Or you can choose the closest airport to your place who can arrive in China.
If you are not from these countries, you can call us, it's our pleasure to hear from you.