Box hearing aids are also called body-mounted or pocket hearing amplifier. The shape of the box is like a small radio. The microphone, amplifier and battery of the hearing aid are assembled in the box and a long wire connects the earphone to the earplug or a special ear mould. Usually in pockets or special pouches. This kind of hearing aid has a large volume and is suitable for the elderly and people with inconvenient finger movement. The microphone of the hearing aid is far away from the receiver (earphone), so it is not easy to produce sound feedback. Therefore, the maximum output limit of the hearing aid is small, the power can be very large, and multiple manual adjustment knobs can be placed. Its price is low, maintenance is convenient, use No. 5 or No. 7 batteries, can also use rechargeable batteries.

Pocket hearing amplifier can also be made into binaural hearing aids because of their large size and poor concealment. Hearing aids are made of ordinary transistor elements, which have high background noise. In addition, the pocket hearing amplifier themselves and the friction between wires and clothes make the sound more distorted and the quality of the sound reduced. At the same time, earphone wires are easy to damage and children are not safe to wear.

Leveraging upon our experience, we have become a prominent Anti-Algae & Anti-Fouling Coatings (RTV-ZB) Manufacturer, Exporter and Supplier in China and rest of the world. Applicable for flash-over & algae prevention, our well-formulated anti algae coating and anti fouling coating are acknowledged for offering lasting sterilization and inhibition for mold, bacteria, yeast and other microorganisms. Avail them from us in desired quantity and packaging at guaranteed reasonable prices.

The Advantages of Anti algae coating & Anti-fouling (RTV-ZB):

1. Ready-to-use without adding solvent to make thinning or excassive mixing/shanking before use. Easy to use in different conditions.
2. Excellent anti algae paintand anti-fouling, long-term resistance to weathering and a wide variety of pollution environments.
3. Long-term hydrophobicity, Suppression of leakage current, discharges and pollution flashover.
4. Reduced maintenance and revenue losses, easy to maintain as in washing, compared to conventional insulator surfaces.
5. Strong adhesion to the insulator surface, withstand high pressure.
6. The service life is longer than normal RTV coating, at least 15 years in most service conditions. Stable operation, long-lasting performance.
7. Nontoxic and environmental friendly material.

Application Scope of algae resistant paint & Anti-fouling Coating (RTV-ZB):

1. RTV-II is ideal Suited for used in a wide variety of pollution environments including, but not limited to, salt spray, salt fog, industrial (cement dust, fly ash, carbon black, acid emissions, etc.) and desert sand.
2. AC and DC systems, all voltage levels.
3. Our RTV-ZB Silicone Rubber Coating can effectively protect ceramic insulator, glass insulator, long rod insulator, circuit transformer, voltage transformer, bushing, circuit breaker, Hollow porcelain insulator, porcelain surge arrest, switchgear cabinet, Transformer insulator and other outdoor electrical equipment.

Product Standard of Anti-Algae & Anti-Fouling Coating (RTV-ZB):

DL/T 627-2012 Room Temperature Vulcanized Silicone Rubber Anti-Pollution Coating for Insulators

IEEE 1523 IEEE Guide for Application, Maintenance, and Evaluation of Room Temperature Vulcanized (RTV) Silicone Rubber Coatings for Outdoor Ceramic Insulators

Contact us get more details about RTV-ZB Silicone Rubber Coating, such as TDS, Application Method, OEM etc.

We can supply different color of RTV-ZB Coating, such as RED, GRAY, WHITE and other color, also customer required.

Lifep04 lithium battery (lifep04) cathode material is considered as one of the most promising cathode materials for lithium ion batteries because of its excellent electrochemical properties.  However, its development has been restricted by its low conductivity and slow diffusion rate of lithium ions. In this paper, the effects of ion doping, carbon coating and nano-materials modification on lithium iron phosphate cathode materials for lithium ion batteries and the existing problems are mainly introduced, and the development trend and key research directions of LiFeP04 lithium battery are prospected.

Because the lithium iron phosphate cathode material has poor conductivity and low lithium ion diffusion coefficient, researchers at home and abroad have done a lot of research in these areas, and achieved some good results. Its modification research mainly includes three aspects: doping method, coating method and nano-materials.

Lithium-ion batteries are widely used in mobile phones, notebook computers, digital cameras, electric vehicles, aerospace, military equipment and other fields because of their high energy density, low self-discharge current, high safety, high current charge-discharge, many cycles and long life.

MornPackaging, As one of the leading manufacturers of pp woven bags/fabric in China. We are offering a complete pp woven bags manufacturing process of pp woven bags manufacturing service, main process includes pp extruding, circular weaving, flexo printing, gravure printing, lamination, bags cutting, LDPE/HDPE inserting, gusseting, bags sewing etc. For make all you dear customers a better understanding of how to make pp woven bags, here we attach a chart of whole production process, looking forward to hear from you for further discussion.

1. New Polyproylene
2. Drying Mixer Recycling Granulator

Recycling Material

Grinder Machine

3. Extruding Machine
4. Winding Machine
5. Circular Weaving 6. Fexo Printing 6. Lamination 6. Bag Cutting

Paper/Film 7. Bag Cutting 7. Gusset 7. Hemming & Sewing

Gravure Printing

BOPP Film 8. Hemming & Sewing 8. Cutting & Sewing 8. Packing

9. Packing 9. Packing
10. Cutting & Sewing
11. PE liner insert
12. Packing
13. 

Hollow plastic decking has the functions of light weight, environmental protection, waterproof, moisture-proof, anti-corrosion, shock-proof, etc. It can also be made into ordinary, conductive, anti-static, fire-proof hollow board, which is very useful.

Advantages of hollow plastic decking

1. Light weight and material saving;

Hollow plastic decking has good properties. It can save a lot of materials and reduce costs. It is very portable.

2 Heat insulation and sound insulation;

Because of the hollow structure of hollow plastic decking, its heat transfer and sound transmission effect is lower than other solid sheets. It has good heat and sound insulation effect.

3. Good mechanical properties;

Hollow plastic decking has different structures, excellent toughness, strong impact resistance, high compressive strength, cushioning and shock-proof, good bending performance, etc.

4. The effect of environmental protection is obvious.

Hollow plastic decking is not poisonous or polluted. Waste disposal is very easy. It does not pollute the environment. It can also be recycled to make other plastic products.

5. Anti-static, conductive and flame retardant;

By means of modification, mixing and surface spraying, the hollow plastic decking has good electrostatic, conductive and flame retardant properties.

6. It has smooth and beautiful surface and complete color.

Hollow plastic decking is formed by special technology. It uses color masterbatch to mix colors. It has rich colors, smooth appearance and it is easy to print.

Use of hollow plastic decking

1. Hollow plastic boards can be used in industry to make shelves for articles, boards for cushions, partition areas, etc, which still play a great role.

2. Hollow plastic decking is frequently used at home. They can be used for temporary residential structures such as wall panels, ceiling panels and container covers.

3. Hollow plastic decking can be used as partition material in decoration. It has good heat and sound insulation performance and is also light.

Bulk Density Tester

With the rise of modern industry, the construction method of concrete as the main material has become one of the main constructions in the construction industry, It takes up a large proportion in all kinds of engineering construction, this makes the development of concrete machinery durable, and there is a growing situation. Trailer mounted concrete pump, referred to as "trailer pumps", it is one of the various concrete machines, used for conveying and pouring in concrete construction.

Generally, a concrete delivery pump has the following main technical parameters: delivery capacity, outlet pressure, power, and distribution valve form. In terms of power type, used concrete trailer is generally divided into diesel trailer pumps and motor trailer pumps. In terms of hopper allocation, trailer pumps are generally divided into S valve, Ram valve, C valve.

Classification selection 37kW (domestic minimum standard concrete pump, under 37kW is fine stone mortar pump), 45kW, 55kW, 75kW, 90kW, 110kW, 130kW (diesel), 132 kW, 162kW (diesel), 174kW (diesel)......

Trailer pump is manufactured by electric, diesel and ultra-high pressure for your use on sites. The trailer Mounted Pumps prove their worth and superior performance in various applications, e.g. operate well at -22°C in Moscow, 55°C in Dubai, 12h continuous pumping and pump of difficult concrete like B90, C150, and 3-gradation concrete. 5 core pump technologies provide you with the best trailer pump. Trailer pump has high pumping efficiency, long service life, simple operation, efficient energy saving, cutting-edge technology, trustworthy!

Magnetic flux leakage test refers to the formation of a leakage magnetic field on the surface of a test piece after it is magnetized due to defects on the surface or near-surface of the test piece. People can detect defects by detecting changes in the leakage magnetic field.

Briefly describe the magnetization of ferromagnetic components. In the magnetic non-destructive testing, magnetization is the first step to realize the detection, which determines whether the leakage magnetic field signal can be generated, and also affects the performance characteristics of the detection signal and the structural characteristics of the ndt machine. Like magnetic particle inspection, magnetization is achieved by a magnetizer, including both a magnetic source and a magnetic circuit. The magnetic source and the magnetic circuit change depending on the structure of the member to be tested.

What kind of magnetization can be divided into several categories? The magnetization methods can be generally divided into five categories, namely, alternating current magnetization mode, direct current magnetization mode, permanent magnet magnetization mode, composite magnetization mode, and integrated magnetization method.

What are the characteristics of magnetic flux leakage detection technology?

Because leakage magnetic field detection uses magnetic sensors to detect defects, compared with magnetic powder, penetration and other methods, it has the following advantages:

1. It is easy to realize automation. The computer judges the presence or absence of defects based on the detected signals.
2. The fundamentally high detection reliability can solve the influence of human factors in the magnetic powder and osmosis method, and has high detection reliability.
3. can achieve preliminary quantification of defects.  In the range of wall thicknesses up to 30 mm, the inner and outer wall defects can be detected simultaneously.  In the detection of the pipeline, 5 high-efficiency, pollution-free automated inspection can achieve high detection efficiency.

BKN's portable magnetic flux leakage equipment are capable of detecting workpieces efficiently and accurately.

We are one of the professional ndt equipment manufacturers, why don’t RFQ today!

We are professional LED PCB manufacturer.We offer all kinds of LED PCB Product and our LED PCB price is competitive. For High-Power LED of the Aluminum Base PCB, copper base PCB, ceramic base PCB, for low-power LED of the FR4 PCB, High-Temperature PCB. As the Aluminum Base PCB of good thermal performance, High-Power LED products most commonly used Aluminum Base PCB.
 
We can give different Solder mask options for your Led PCB ,We do lots of R&D on Led PCB solder mask  Lumens to give your Led lights better brightness .

The Applications of LED PCB Circuit Board

The Led benefits  make LED printed circuit boards very desirable for a number of applications and industries. Some of the more prominent applications of Aluminum LED PCB Circuit Board include:Telecom LED PCB,Automotive LED PCB,Computer Led PCB,Medical LED PCB,Led PCB Products :  Led Tube , Outdoor LED advertising screen, LED Lamp, Waterproof Led , 1.5m Led and so on .
 

Led PCB Materials We support:

• Fr4 PCB Raw Material
• Aluminum PCB Material
• Copper Core PCB Material
• Ceramic Base PCB Material 
• 

PS foam food container production line is mainly used to produce PS foam food container, that is, disposable foam plastic food container, which refers to polystyrene resin as raw material, which is heated and melted in the extruder and then foamed. The agent (butane) and the like are subjected to extrusion drawing, and after the sheet is wound up, it is placed in a ventilated and humid environment and then subjected to secondary heating and blister molding, and various food-making utensils such as a snack box and a soup bowl are prepared. Instant noodle bowls, fresh trays, etc.

Features of PS Foam Food Container Production Line
The PS foam food container machine production line produced by Hongrun Machinery includes PS foam sheet extruder, PS foam food container automatic forming and cutting machine, and PS foam material recycling granulator. Different production lines can be combined according to the needs of different customers. Medium-sized conventional production lines can reach 150-200kg/h, which is also the most popular production line.

The robotic PS foam food container automatic forming and cutting machine developed by our company is based on PS foam food container has the advantages of heat preservation (1 - 2 hours), pressure resistance (3 kg is not easy to deform), light weight (about 5 grams of fast food box) and cheap (about 8 cents per meal box).

An exquisite laptop packaging box:
Different from other packaging box, the most important aspect of the appearance of computer packaging is to highlight the characteristics of the product, For example, a ultra-thin laptop, a small and lightweight laptop, a laptop with a simple appearance. These can be achieved through a series of surface finishing. Of course, your box can also be simple, with few patterns on the surface, but the brand logo and design style are still important.

How to make your laptop packaging box unique?
Are you looking for creative laptop cardboard box that complement your product range? Do you need a firm and stable laptop packaging box? Are you looking for a supplier that can work with you for a long time to provide you with a box? Lihua Packaging will provide you various laptop packaging box, such as custom corrugated box, hardcover box and folding box etc. And the surface finishing using hot stamping, lamination, printing, UV to ensure the beauty.

Reliable supplier:
We have strict control over the material, color and quality of the product. We are aware of the strength of material and quality of ink for packaging boxes' printing, therefore high quality stocks and finest inks are utilized. As the leading paper packaging in China, we produce laptop packaging box with required high end construction and exquisite appearance. In our many years of experience, we have provide services for GOOGLE, LENOVO, SONY, ASUS, HP, DELL and other electronics manufacturers.

Get your laptops noticed with startling packaging boxes!

Type: Event & Party Supplies

Feature: Disposabel, Eco-Friendly

Printing: Health water ink,

Size: (Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch)

We can custom size as per customer's request

Weight: 1.2g per pcs ( ±0.02)

Colour: Metallic Gold (customized is welcome)

BASIC INFO

Type: Event & Party Supplies

Feature:  Disposabel, Eco-Friendly

Printing: Health water ink,

Size: (Length: 19.7cm, Inner Dia: 5.5mm, Outer Dia: 6mm(1/4 inch)

We can custom size as per customer's request

Weight: 1.1g per pcs ( ±0.02)

Colour: Metallic Gold (customized is welcome)

Packing: Normal in single colour: 500pcs/ OPP bag, 5000pcs/Carton

Mix maximum 20 colors per case.

We can customized packing as below:

Paper bag/ poly bag/ bags with header card

Design: Various patter and LOGO

Certificate: FDA, LFGB, SGS

Delivery time; 25-35 days

Place of original: Ningbo,China (mainland)

Port: Ningbo, Shanghai, China

MOQ: 10000PCS

OEM/ODM: Accept

Supply Ability: 5000000PCS/ Week

Payment Terms: 30% Advance payment, 70%  against B/L Copy.

Payment method: T/T, Western Union, L/C etc.

Usage: Restaurant/Bar/Party/Decoration

MORE INFO

Gold metallic paper straws features magic gold metallic drink paper straws, now, we developed the metal gold, metal silver, metal plum red. With a unique metallic sheen, this series colour paper straws is very popular with customers and is often used in bars or as accessory for a stunning dessert display.

Compared with plastic straws, they are use 100% recycled food grade biodegradable paper, with Eco-friendly water ink. It's passed FDA food grade complaint, health and safety for people's body. These paper straws used for restaurants and food service venues to protect the environment. All the black and gold paper straws are tested to resist high temperature, they are durable, hold us well and are not soggy after a full glass of water/tea.

Nice alternative to plastic straws in order to response to the global plastic ban. The most important, it not only realizes the function of straw, but also makes drinking time more funny, we can make size and colour as per request of customer. Varied pattern design makes it suitable for many different occasions. It perfectly fit in a mason jar glasses or any water bottle, cups, cake-pops, cocktails, juices and more. Normally, paper straws bulk wholesale are packed in 500pcs/bag, can mix with other colour. Surely, we have the special package with 12pcs/24pcs/20pcs/poly bag with header card/paper box. Individually wrapped packing also can supply.

Can it be Reusable too?

ONE TIME USE - Paper straws are not reusable.

Can make Individually wrapped straws?

The paper straws can be individually paper wrapped. We also can print your logo on the paper wrapper.

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. 

Yiwu market map

Yiwu Intl trade market has 5 different districts for different products.

District 1: Down load the map

 
1st floor.: Flower, vase, plush toys, inflatable toys, electronic toys, common toys.
2nd floor: Ornaments, jewelry, accessory.
3rd floor: Xmas,craft,ceramic,frame products.
4th floor: More Xmas and craft items.

District 2: Down load the map

 
1st floor: Raincoat, umbrellas and various bags in the.
2nd floor: Lock&switch,tools&machine and vehicle products. 
3rd floor:Kitchen&bath,phone/PC/TV/lamp equipment and clock&watch products.
4th floor: Hardware, outdoor products and electrical.

District 3: Down load the map

 
1st floor: Paper products&pens and glasses.
2nd floor: Office supplier and sports equipment.
3rd floor: Daily use, cosmetic tool,zippers&Buttons.
4th floor: Cosmetics, sports and cloths Acc.
5th floor: Picture frame

District 4: Down load the map

 
1st floor:Socks&Stockings
2nd floor:Daily use items and Hat&Gloves
3rd floor: Towel, tie, Lace, Tape and shoes.
4th floor: Scarf, belt and Bra&underwera.
5th floor: Picture frame.

District 5: Down load the map

 
1st floor: Imported items and Jewelry&cloths.
2nd floor: Beddings, wedding supplier and Hair products.
3rd floor: Knitted Raw Material and Curtain
4th floor: Auto acc and Pets

We have more than 1,000 employees working in the company in 2018. We are one of the largest china purchasing agent in Yiwu. Many of our employees have been with the company for more than 10 years and are much experienced.

If you choose us, we will provide a perfect one-stop service from order to shipment.

Are you ready? Contact us now!

In recent years, the wafer industry has developed rapidly, but at the same time, it also produces a large amount of wastewater. The production wastewater mainly comes from the cleaning process of the polysilicon ingot slicing process. The acid-containing wastewater is produced in the cleaning process after the surface treatment of the polycrystalline silicon ingot with the mixed acid. Since the surface treatment is a mixed acid of nitric acid + hydrofluoric acid, the main pollution in the washing wastewater is pH, fluoride, and nitrate. The organic wastewater is produced in the cleaning process of the sliced polycrystalline silicon wafer. Since the cutting fluid (the main component is polyethylene glycol) and the cut micro powder (the main component is silicon carbide) are used for slicing, the main pollutant in the cleaning wastewater is CODCr and SS.

Polysilicon cutting fluid is made up of polyethylene glycol as the main body and added with various additives. It has a suitable viscosity index, good fluidity, and thermal conductivity, and has good dispersion stability and suspension effect on silicon carbide micropowder. A large amount of waste liquid is generated after cutting, and the waste liquid contains a considerable amount of polycrystalline silicon powder, which has a certain recovery value. The polysilicon powder is recovered by the ceramic membrane separation technology, becoming the so-called cutting fluid recovery. And the site is clean and sanitary, which is in line with the national energy-saving and emission-reduction industry orientation.

Ceramic membrane equipment technology is advanced and mature, with low operating costs and fast return on investment.

Ceramic membrane filtration process can directly deal with the waste liquid containing silicon produced in the solar energy production process, collect silicon, reuse pure water and coolant.

The process can separate silicon powder and pure water, recover over 98% of the silicon powder, reuse more than 90% pure water,reuse about 50% of coolant and shaping agent , which can greatly reduce the load of the sewage station.

The process has the advantages of short process, simple operation, short payback period, and has become the preferred standard process for the benchmarking enterprises in the silicon chip industry.

Although plastic wood railings are more expensive than pure wood railings, their relative high costs are gradually decreasing as manufacturers find more efficient processing methods. The use of recycled plastics in composite materials can further reduce costs. Even in the face of the current cost structure, many consumers are still willing to accept relatively high prices because of the advantages of these composite materials.

Advantages of plastic wood railings:

(1) Plastic wood railings can be waterproof and moisture-proof. The problem that wood products are easy to rot, expand and deform after absorbing water in wet and multi-water environments is solved. It can be used in environments where traditional wood products can not be applied.

(2) Plastic wood railings can prevent insects and termites, effectively eliminate pest harassment and prolong service life.

(3) There are many colors to choose from. It has both natural wood texture and wood texture, and you can customize the color according to your personality.

(4) Plastic wood railings has strong plasticity, which can easily realize personalized modeling and fully embody personalized style.

(5) Plastic wood railings are environmentally friendly, pollution-free, pollution-free and recyclable. The product does not contain benzene, and the formaldehyde content is 0.2, which is lower than the EO grade standard. It is the European grade environmental protection standard. It can be recycled, which saves the use of wood greatly. It is suitable for the national policy of sustainable development and benefits the society.

(6) Plastic wood railings have high fire resistance. It can be effective flame retardant. Fire protection level reaches B1 level. It extinguishes in case of fire and does not produce any toxic gases.

(7) Plastic wood railings have good workability. They can be ordered, planed, sawed, drilled and painted.

(8) Plastic wood railings are easy to install, convenient to construct and do not need complicated construction technology, saving installation time and cost.

(9) Plastic wood railings do not crack, expand, deform, and need no maintenance. It is easy to clean and saves later maintenance and maintenance costs.

(10)Plastic wood railings have good sound absorption effect and good energy-saving, making indoor energy-saving up to 30%.

Laser Particle Size Analyzer, Laser Granulometry

Bettersizer ST laser scattering particle size distribution analyzer includes the patented Dual Lens Optical System (DLOS) which provides a compact design without resorting to folding optics that are susceptible to misalignment caused by vibrations often present in most industrial labs. 

The ST Laser Granulometry incorporates 86 high-speed detectors, which produces the high-resolution data from 0.1 to 1000 microns. This high-speed detector system delivers fast results, often in as little as 15 seconds. 

• Measurement: Particle size
• Particle size range: 0.1 to 1000µm
• Dispersion type: Wet
• Technology: Laser diffraction

Features and Benefits

•Dual Lens Optical System (DLOS):
The Dual Lens Optical System (DLOS) is a technical innovation developed by Bettersize. It detects both the forward and backscatter laser diffraction pattern. This breakthrough technology results in increased particle size measurement range without the added cost of a second light source. This single laser particle size analyser provides for higher accuracy due to a consistent wavelength throughout the full measurement range.

•Standard Operation Procedure (SOP):
The Bettersize software offers an intuitive user interface.  The “Auto Test” function fully automates the entire test sequence.  With one mouse click, “Auto Test” initiates auto-alignment, collects a background, prompts the operator to add sample and analyzes the sample.  

•Compact design:
The rugged and compact design, coupled with the low cost of ownership of the Bettersizer ST makes it the ideal laser particle size analyzer for your quality control applications.

•Auto Alignment Function:
The auto alignment function of Bettersize ST provides accurate and repeatable testing results.  The high speed servo motors allow the Bettersize ST to perform an auto alignment prior to every test. 

 

 

 

Our own number: 723

1. Re-manufactured Putzmeister 42 meters concrete pump, Volvo chassis, 4RZ boom form with x-leg. First-level standard maintenance. High working stability.
2. Approximate to New putzmeister used pumps standard.

Safety issues should be paid attention to in the construction of putzmeister used putzmeister pump

Keep the water tank full of clean water, and check and deal with it in time when finding the water quality is cloudy and there are many sand grains.

Bolts of the putzmeister 42m shall be fastened, pipe joints shall be tightly sealed, and protective devices shall be complete and reliable.

The control, high-speed handle, handwheel, control lever and cock shall be in the correct position. The hydraulic system should be normal and free of leakage.

When the pumping system is under pressure, it shall not open any delivery pipe or hydraulic pipe. The safety valve of the hydraulic system shall not be adjusted arbitrarily, and the accumulator can only be filled with nitrogen.

After the operation of concrete tow pumps, all the commercial concrete in the hopper and pipeline must be exported, and then the putzmeister concrete pump truck, hopper and pipes shall be cleaned. When rinsing the pipe with compressed air, no one can stand within 10 meters in front of the outlet end of the pipe, and the foam rubber and sand particles rushed out should be collected by metal net basket.

It is strictly forbidden to flush the pipe of the placing boom with compressed air. The folding and shrinking of the placing boom should be done in order.

Eddy current testing technology has been widely used in the detection of metal components in the automotive and aerospace industry. In order to ensure the flight safety of the aircraft, the relevant components must be periodically inspected. The eddy current technology is usually used to detect aero-engine blade cracks, bolts, cracks in the screw holes, multi-layer structure of the aircraft, landing gear, wheels and aluminum skin as the aerospace non destructive testing. And subsurface defects, and used to detect defects in the wing joint weld.  In the detection, it can effectively suppress the shaking of the probe, and the material is uneven and cause interference signals. Metal magnetic memory testing technology can be used to diagnose the stress concentration of the above components or early damage.

Due to the complex geometry of the auto parts, the equipment is required to have a high level of materials and complicated materials, requiring diverse equipment and high precision. In addition, the production of auto parts is a large industrial production, with certain beat monitoring requirements, and only by reducing the testing costs, can we reduce the automobile production and improve the competitiveness in the domestic and foreign markets. With the development of the national economy, the automobile industry has become a pillar industry in China. Therefore, non-destructive testing technology for eddy current flaw detectors for automotive parts is also receiving increasing attention from manufacturers and researchers. At present, the most widely used ndt machine in the detection of automotive parts is the eddy current flaw detector ultrasonic testing method. In the ultrasonic flaw detection of eddy current flaw detectors at home and abroad, the most used type A ultrasonic flaw detector. It adopts A-type ultrasonic display, which has the advantages of simple and cheap equipment, can locate and quantify defects, and is widely used in production inspection.

However, its flaw detection results are not intuitive, no record, difficult to detect, and many human factors. Seriously affect the reliability of detection. Due to the continuous development of computer technology and electronic devices, the digital acquisition and analysis of the ultrasonic signal of the eddy current flaw detector become possible, the waveform can be recorded and preserved, and the ultrasonic detection of the eddy current flaw detector is positive digital signal processing and imaging direction development. Super-generation image technology is a remarkable new technology. The ultrasonic image of the object can provide intuitively and a large amount of information, directly reflecting the acoustic and mechanical properties of the object, and can also evaluate the mechanical properties of the microstructure of the solid material. Suddenly macroscopic discontinuities. In short, the aviation ndt services for automotive parts eddy current flaw detector will develop with the advancement of modern high-tech, to the direction of intelligence, automation and imaging, in order to adapt to the rapid development of modern automobile manufacturing industrial parts quality inspection, testing requirements.