Blogs/News/PSAs

"RQ-120-B Electric Pulse Automatic CNC EDM notch machine" is a precise instrument specially developed by Nanjing BKN Automation System Co., Ltd. for making inspection sample bars. It can be processed by controlled electric sparking method. It can be used to make longitudinal and transverse standard artificial grooves, rectangular blocks with equal depths and circular holes with equal depths on the inner and outer walls of steel tubes and bars.

RQ-120-B  Automatic CNC EDM Notch Introduction

The core part of the equipment adopts high-quality imported components, using modern advanced digital control and servo technology, the wound-making process is fully automated, with high processing accuracy,fast speed, simple operation and the performance is at the international leading level. The whole instrument is portable, easy to carry, and has low requirement for the environment of steel pipe, bar and pipe carving.

Ndt Inspection Equipment Has the Following Features:

1) providing controllable electrical pulse generation and modulation;

2) According to the input incision depth parameter, the incision process is precisely controlled by numerical control and servo system;

3) The electronic control system automatically controls the rise, fall and stop of the guide operating mechanism;

4) Control the output of the processing power supply;

5) Adjust the working state of the instrument, such as the processing voltage, current and the position of the operating mechanism, according to the requirements;

6) Real-time precision display of processing speed and engraved depth value;

7) With manual tool setting and automatic engraving function.

Operating mechanism

The mechanism includes CNC servo micro-special motor, precision screw, precision guide rail, electrode fixture and other devices. Under the control of the cutting ndt testing equipment, the cutter head can move up and down to realize precise conveying.

The magnetic seat ensures that the running mechanism is conveniently and reliably fixed on the sample bar to be processed.

Tool guide rod and tool

According to the requirement of engraving internal injury, the operating mechanism extends the engraved tool to the specified length through the guide rod.

The trauma tool is curved according to the outer diameter of the steel pipe, and the internal tool is made according to the inner diameter of the steel pipe to ensure uniform contact between the entire arc surface and the steel pipe.

RQ-120-B  Automatic CNC EDM Notch Performance

Features of RQ-120-B  Automatic CNC EDM Notch

The PCB on the computer consists of a motherboard, a hard disk, a memory module, a graphics card, and the like.

The plane of the computer motherboard is a PCB (printed circuit board), generally four or six layers. Relatively speaking, in order to save costs, the low-end motherboards are mostly four-layer boards: the main signal layer, the ground layer, the power layer, and the sub-signal layer, while the six-layer board adds the auxiliary power layer and the middle signal layer. Therefore, the six-layer PCB The motherboard is more resistant to electromagnetic interference and the motherboard is more stable.

You won't find electronics PCBs today only in computers - although laptops, smartphones, desktops and tablets certainly can't function without quality printed circuit boards, and printed circuit boards for computers make up a large part of the industry. Instead, you'll find machines containing printed circuit boards almost everywhere you look.

Your television, wireless router, video game system, coffee maker and monitor all operate using a printed circuit board. In the office, your printer, wireless mouse, network hardware, vending machine, scanner, fax, packaging equipment and more all use printed circuit boards, too — in fact, you probably have more printed circuit boards in your office building than people. Today's businesses and homes simply cannot function without reliable printed circuit boards.

Modern electronics and computer applications often require PCBs with higher thermal conductivity so they can dissipate the high heat that comes from fast computer processors or high-intensity LEDs. The type of printed circuit board you will need for your application will vary widely since the size, shape and function of consumer electronics, as each business machine and computer is different from the next. For instance, the type of PCB you will need to power a smartwatch is very different from that you'll find in a television.

SSD

The main control chip, flash memory chip, and cache chip are organically combined on one PCB to form the overall shape of the solid state drive.
Our company specializes in producing SSD PCB, and Kingspec is one of our SSD customers.

Clear and detailed manuals:
Manual is a detailed description of a product to facilitate people to learn more about the things. As a manual, the text description inside should be realistic and cannot exaggerate the role or function of the product. And to explain the product in all aspects, not only to introduce its advantages, but also to illuminate the precautions when using.

Manuals supplier:
For your product, we will not make any changes to the text description of the manual unless you have other requirements. We will manufacture manuals for different materials and types according to your needs. As China leading printing company, we can use art paper, magazine paper, wood free paper or other materials to produce manuals. There are some options, according to the shape of the manual can be divided into folding instruction, riding stitching instruction and glue instruction etc, and it can be divided into electronic product manual, cosmetics catalogue, clothing paper tag and menu by purpose. Of course, the choice of these styles is up to you.

We instruction factory use the latest printing technology and the most professional quality inspectors to monitor the products in real time to ensure the quality of the products. Also, we send the sample to you before the product is confirmed and communicate with you at any time to ensure that the final product is in accordance with your requirements.

Sip Christmas birthday celebration drinks with our jolly Red and White Striped Paper Straws or Green Reindeer Paper Straws. This paper straws are perfect for including a decorative contact to your birthday party drinks, or can be used as a unique Christmas birthday party desk decoration. Place these Straws in a glass container for an instantaneous Christmas desk centerpiece. Use these Christmas paper straws  with other birthday celebration materials and decorations to add some cheer to your holiday birthday party atmosphere. We can also produce other color or pattern as you request.

Product Feature:

Our 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.

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:

All paper straws are made by biodegradable paper, which is FDA certificate, LFGB certificates approved, and no harmless to human body.

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

Palm oil is not only the highest yielding cheap vegetable oil on the earth but also a safe raw material for edible oils and daily chemicals, and a raw material for biofuel.

As a raw material for edible vegetable oils, chemical raw materials and biofuel, palm oil has attracted worldwide attention in the process of ecological protection and industrial pollution. As a result, palm oil wastewater treatment also receives much attention. 

Palm oil mill effluent (POME)is a yellow liquid with a unique unpleasant smell and comes from oil extraction, cleaning and washing process in the POME factory, which is featured with very high COD and BOD. 

Due to its acidic nature (pH 3.4–5.2), high salt and suspended solids, oil and grease, the untreated discharge of POME can result in considerable environmental consequences.

Each ton of palm oil produced emits about 20 tons of high-concentration organic wastewater. When the high-concentration organic wastewater per ton is treated according to the current sewage pond treatment method, it is equivalent to emitting more than 210 million tons of carbon dioxide gas into the atmosphere every year. It's important to solve the problems inpalm oil mill effluent treatment.

To achieve environmental requirements and economic challenges, the POME factories are trying to get efficient and return on the investment process.

JIUWU HI-TECH has made a lot of studies and many rich experiences for POME treatment since 2012.
JIUWU HI-TECH offers the solution for POME treatment with an integrated ceramic membrane technology which is a green, friendly environment, economic efficiency and has the following technical benefits:

• No discharge of wastewater
• Low capital investment ;
• Low operation cost;
• Oil is concentrated and water is recycled

After integrated process filtration, concentrate including surplus sludge from anaerobic and centrifuge is used as fertilizer for cattle farm and purified water can be used for recycling or the bolier feed water due to salts and organic compounds are removed. 

The difference between the two balancing valves is that the thermostatic balancing valve

manually adjusts the opening degree of the thermostat valve, while the auto balancing valve automatically adjusts the opening degree of the thermostat valve by using temperature sensors.

Thermostatic balancing valve (referred to as constant temperature valve) is an energy-saving product. The principle is to control the temperature of the valve by using the temperature sensor in the temperature control valve head. When the room temperature rises, the temperature sensor expands due to thermal expansion and compresses the stem to make the valve close small. When the room temperature drops, the temperature sensor shrinks due to cooling, and the stem springs back to open the valve. Therefore, when the room has other auxiliary heat sources (sunlight, other heaters) and the room temperature is higher than the set temperature, the valve automatically closes down, the water intake of the radiator decreases, ultimately saving the heat of heating.

The setting temperature of the auto balancing valve can be adjusted artificially. The constant temperature valve will automatically control and adjust the water quantity of the radiator according to the set requirements, so as to achieve the purpose of controlling the indoor temperature. Temperature control in user's room is realized by constant temperature control valve of radiator. The constant temperature control valve of radiator is composed of a constant temperature controller, a flow regulating valve and a pair of connectors. The core component of the constant temperature controller is the sensor unit, namely the temperature package. The temperature chamber can induce the volume change caused by the change of ambient temperature, drive the valve core to produce displacement, and then adjust the water quantity of the radiator to change the heat dissipation of the radiator.

Twenty-four years have passed. Time flies, day and night changes. No matter how the situation changes, the concept of "benefiting the people with the best batteries, touching clients with the best service" remains unchanged. Only battery of dongjin group an do this.

Looking at the history of the battery industry, you will find only powerful enterprises remain in dozens of brands in in a new round of reshuffle. Dongjin Group, the veteran batteries in this field shows its outstanding quality strength every time. In 2012, dongjin group invested 500 million yuan in establishing Jiangxi Dongjin New Energy Co., Ltd. in Ji'an, Jiangxi Province. It played a leading role in both brand influence and productivity improvement. In addition to focusing on building domestic sales channels, we should formulate a differentiation strategy, focus on the global market, and lay out the international market. Our products are exported to more than 50 countries and regions in Israel, Afghanistan, North America, South America, Asia, Middle East and South Africa. Among them, "Dongjin" and "Jinfeng" brands have become the leading brands in the local market. Compared with the same type of batteries, they occupy an absolute market share.

Under the new situation, new changes and adjustments have taken place in the battery energy industry. Dongjin Group, which is well versed in this theory, has been adapting to the trend of development, constantly adjusting its own structure and formulating a two-step marketing strategy: In the domestic market, we should set up professional R&D, production and sales teams, introduce modern equipment, increase control over product quality and technology R&D, and stabilize the domestic market with the advantages of quality and service.

The international market is based on the changes of the global new energy environment and the objective environment of oversupply in the domestic market. Top leaders of Dongjin Group decided to continue to invest more and build the largest battery production base in Bangladesh in December. At that time, the group's daily capacity of nearly 30,000 batteries can be completely digested by foreign trade orders. Domestic and foreign markets are combined to complement each other. It plays back into the attack and defend the action. This makes Dongjin present a unique brand image.

According to the senior management of the group, on the basis of its original strength, Dongjin Group will set up a brand new team, marketing model, product system and nanny-style service system at the end of 2016 to return to the domestic and foreign markets and re-establish the brand value of the enterprise. With the new situation, new environment and new changes, battery of Dongjin group is showing its strong vitality.

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.