The EPE foam extrusion machine is a versatile piece of equipment that enables the production of expanded polyethylene (EPE) foam materials. It can be used to create foam products with various properties, including different colors. So, what is the process of EPE foam extrusion machine producing foam materials of different colors?

1. Raw Material Selection:

To produce foam materials in different colors, the first step is to choose the appropriate raw materials. Typically, the base material used in EPE foam production is polyethylene, which is available in different colors. Manufacturers can select colored polyethylene resin pellets according to their desired foam color.

2. Mixing and Blending:

The selected colored polyethylene resin pellets are mixed and blended in the EPE foam extrusion machine. This process ensures uniform color distribution throughout the foam material. The machine's mixing section facilitates the fusion of the colored resin pellets, creating a homogeneous mixture.

3. Temperature Control:

The EPE foam extrusion machine has precise temperature control mechanisms to achieve consistent foam color. Thermal stability is crucial to prevent color degradation or inconsistencies. Proper temperature control ensures that the foam material retains its desired color during the extrusion process.

4. Extrusion Process:

During the extrusion process, the blended resin mixture is heated and forced through a die, which determines the final shape and size of the foam. The die can be customized to produce foam materials with different shapes and thicknesses.

5. Cooling:

After extrusion, the foam material exits the die, and it undergoes a cooling process. Adequate cooling is essential to stabilize the foam structure and preserve the desired color. The specific cooling method may vary depending on the machine's design and specifications.

6. Cutting and Finishing:

Once the foam material has cooled and solidified, it is cut into the desired shapes and sizes. The EPE foam extrusion machine can be equipped with cutting tools to automate this process, ensuring precision and efficiency. Additional finishing steps, such as laminating or embossing, can be performed to enhance the appearance and functionality of the foam material.

EPE foam extrusion machine manufacturers use machines that are able to produce foam materials in different colors. By selecting colored polyethylene resin pellets, ensuring precise temperature control, and utilizing the extrusion and cooling processes effectively, it is possible to create foam products with a wide range of attractive and customizable colors. This flexibility opens up opportunities for various applications, including packaging, insulation, cushioning, and more. With advancements in technology and manufacturing techniques, the EPE foam extrusion machine continues to play a crucial role in the production of high-quality, colored foam materials.

EPE pearl foam, also known as pearl cotton, is a new type of material with various environmentally friendly characteristics. Here are some suggestions on how to make rational use of the environmental features of pearl foam:

1. **Recyclability**: Pearl foam is a material that can be recycled repeatedly. After the product is packaged or used, it can be reused through recycling channels to reduce environmental impact.

*EPE Recycling Machine 

2. **Shock Absorption**: Pearl foam has good softness and cushioning properties, making it an excellent packaging material for various fragile products, reducing damage during transportation and extending the product's lifespan.

3. **Water Resistance**: Pearl foam has almost no water absorption, making it a waterproof material. It can be used for packaging products that require waterproof protection, such as electronic devices and precision instruments.

4. **Thermal Insulation**: Pearl foam has thermal insulation properties and can be used in situations that require insulation, such as cold storage and camping equipment.

5. **Soundproofing**: The independent bubble structure of pearl foam gives it good soundproofing effects, making it suitable for the production of soundproofing materials or soundproof walls.

6. **Processability**: Pearl foam is easy to cut, glue, and mold, allowing it to be made into various shapes and sizes according to needs, such as pearl foam bags and tubes.

7. **Environmental Substitution**: Pearl foam can serve as an environmentally friendly alternative to EPS (expanded polystyrene), reducing white pollution. As EPS has been banned in some countries and regions, the use of pearl foam will help meet environmental requirements.

8. **Deep Processing Potential**: Pearl foam can be further processed using laminating machines and composite machines to improve its mechanical strength and added value, such as laminating HDPE film, aluminum-coated film, etc., expanding its application range.

9. **Aesthetics**: Pearl foam has a smooth appearance and can be colored, offering an aesthetically pleasing effect, suitable for product packaging that requires decorative appearance.

10. **Anti-static and Flame-retardant Treatment**: Pearl foam can be treated with anti-static agents and flame retardants to enhance its performance, suitable for situations with special requirements for static electricity and flames.

With advancements in technology and manufacturing techniques, the EPE foam extrusion machine continues to play a crucial role in the production of high-quality, colored foam materials.Making rational use of the environmental characteristics of pearl foam can not only reduce environmental pollution but also increase the added value and market competitiveness of products. When designing and selecting packaging materials, consider the characteristics of pearl foam to achieve a more environmentally friendly and economical solution.

If you want to know more machine details, please contact FLY's Machinery

The hot melt glue machine can quickly heat up and melt the hot melt glue, turning it into a liquid state, thereby speeding up the bonding process. This fast curing time helps increase production efficiency.

Some advanced hot melt glue machines have precise control systems that allow precise glue application to ensure that the amount of glue is controlled on the areas that need to be bonded.


Product Advantages:

1. The Machine's structure is compact, manufacturing is precise,

2. The machine overall adopts stainless steel materials, corrosion resistant.

3. save glue, improve work efficiency

4. Adjustable speed, smooth operation

5. gluing evenly, not leak glue

Tips when using a hot melt adhesive dispensing machine:

To recognize and master the various models of hot melt adhesives and different technical performance parameters. Different models of hot melt adhesives have different opening, curing, and cooling times. In different regions, the temperature varies while its open, curing time, etc. will also change. To complete the entire bonding process within the melting state of the hot melt adhesive.

The use of hot melt adhesive should not be directly heated with an open flame, must be heated with a spacer set of oil baths or with a sealed electric heating plate heating device. The temperature of the hot melt glue body should be strictly controlled within the range of use, not to arbitrarily change the temperature of the use of glue.

The process of using glue should not be directly mixed with solid glue blocks in the glue-coated work box to prevent the uneven temperature of the glue, poor liquidity, or the phenomenon of not completely melting, resulting in uneven glue application or bonding difficulties affecting the quality.

The amount of glue in the dispensing head to grasp the appropriate amount of glue, not too much to use up, repeated melting of the gel many times, so that its deterioration and aging, viscosity reduction, affecting the adhesion. Also, it can not add too little and not enough, resulting in waiting for melting to affect normal production. Dispensing head, dispensing syringe, or pressure barrel should be cleaned regularly to ensure the cleanliness of the interior, to prevent the precipitation of impurities in the glue, the accumulation of surplus and affect the accuracy of temperature control, to set out the system in the work, check on time, and carefully implement.

Contact Fuliyuan Machinery to get mote information.

In today’s competitive market, efficiency and precision are crucial for industries requiring cutting machines. With the advent of technology, electric 3KW brushless motor semi-automatic cutting machines have gained popularity. These machines offer superior performance and reliability, making them indispensable in various sectors. In this blog post, we will compare and contrast different models of professional electric 3KW brushless motor semi-automatic cutters, analyzing their features, benefits, and suitability for different applications.

Model A: Professional Electric 3KW Brushless Motor Semi-Automatic Cutting Machine

This first model is a power-packed performer designed for heavy-duty cutting tasks. Equipped with a 3KW brushless motor, it offers exceptional torque and speed control. The semi-automatic cutting feature enhances productivity by reducing manual effort. This machine’s ergonomic design ensures user comfort and minimizes fatigue during operation. It is ideal for industrial applications requiring precision and efficiency.

Model B: Electric 3KW Brushless Motor Semi-Automatic Cutter

The second model is another excellent option for professionals. With its robust 3KW brushless motor, it delivers consistent power for seamless cutting. The semi-automatic cutting mechanism enables faster and more efficient workflow, saving time and effort. This cutter’s user-friendly interface and intuitive controls make it suitable for both skilled operators and beginners. It is versatile, catering to a wide range of cutting needs in industries like construction, fabrication, and automotive.

Model C: 3KW Brushless Motor Semi-Automatic Cutting Machine

Our third model boasts a high-performance 3KW brushless motor and a semi-automatic cutting function to enhance productivity. This cutter offers precision cutting with minimal operator intervention. Its compact design makes it suitable for smaller workspaces without compromising on performance. Ideal for workshops and small-scale production units, this machine delivers accurate results consistently.

Key Comparisons and Considerations

When comparing these models, several factors need to be considered based on individual requirements and industry specifications. Here are some key points to consider:

1. Power and Performance: All three models feature a 3KW brushless motor, ensuring sufficient power and torque for cutting tasks.

2. Cutting Mechanism: The semi-automatic cutting function in each machine reduces manual effort and increases productivity.

3. Application Specificity: Assess your industry needs and select the model that aligns with your requirements. Consider factors like size, precision, and customization options.

4. User-Friendliness: Evaluate the ease of use, intuitive controls, and ergonomic design elements for optimal operator experience.

5. Durability and Reliability: Look for machines constructed with high-quality materials for enhanced durability and long-term reliability.

6. Price and Value: Compare the pricing and value proposition offered by each model, keeping in mind the long-term benefits and return on investment.

Ultimately, the right professional electric 3KW brushless motor semi-automatic cutting machine depends on the unique needs and priorities of your business. Carefully assess the features, benefits, and suitability of each model mentioned above before making a well-informed decision.

Remember, investing in a high-quality cutting machine is an investment in efficiency, productivity, and the overall success of your business.

Bicycle Lamp Reliability Test

Bicycles are in the social environment of high oil prices and environmental protection, with environmental protection, fitness, slow living... Such as multi-functional recreational sports equipment, and bicycle lights are an indispensable and important part of bicycle night riding, if the purchase of low-cost and not after reliability test of bicycle lights, riding at night or through the tunnel failure, not only for the rider has a serious threat to life safety, For driving, collision accidents can occur because the driver cannot see the cyclist, so it is important to have bicycle lights that pass the reliability test.

Reasons for bicycle lamp failure:

a. Deformation, embrittlement and fading of lamp shell caused by high temperature of lamp

b. yellowing and embrittlement of lamp shell caused by outdoor ultraviolet exposure

c. Riding up and down the hill due to high and low temperature changes in the environment caused by lamp failure

d. Abnormal power consumption of car lights

e. Lights fail after a long time of rain

f. Hot failure occurs when the lights are lit for a long time

g. During riding, the lamp fixture drags loose, causing the lamp to fall

h. Lamp circuit failure caused by road vibration and slope

Bicycle lamp test classification:

Environmental test, mechanical test, radiation test, electrical test

Initial characteristic test:

Take any 30, light the lamp with DC power supply according to the rated voltage, after the characteristics are stable, measure the distance between the current and the optical center, less than 10 defective products are qualified, more than 22 are unqualified, if the number of defective products is between 11 and 22, another 100 samples are collected for testing, and the number of defective products under the original inspection is qualified when the number is less than 22. If the number exceeds 22, it is disqualified.

Life test: 10 bulbs passed the initial characteristic test, and 8 of them met the requirements.

Bicycle test speed: simulated 15 km/h environment

High temperature test (temperature test) : 80℃, 85℃, 90℃

Low temperature test: -20℃

Temperature cycle: 50℃(60min)→ normal temperature (30min)→20(60min)→ normal temperature (30min), 2cycle

Wet heat test: 30℃/95%R.H/48 hours

Stress screening test: High temperature: 85℃←→ Low temperature: -25℃, dwell time: 30min, cycle: 5cycles, power on, time: ≧24h

Shell salt spray test: 20℃/15% salt concentration/spray for 6 hours, determination method: the surface of the shell should not occur obvious rust

Waterproof test:

Description: The IPX rating of rainproof lamps needs to be at least IPX3 or above

IPX3(Water resistance) : Drop 10 liters of water vertically from a height of 200CM at 60˚ (test time: 10 minutes)

IPX4(anti-water, anti-splash) : 10 liters of water drops from 30 ~ 50CM in any direction (test time: 10 minutes)

IPX5:3m 12.5L of water from any direction [weak water](test time: 3 minutes)

IPX6:3m Strong spray 30 liters from any direction [strong water, pressure: 100KPa](test time: 3 minutes)

IPX7(Life waterproof) : It can be used for 30 minutes under 1m in water

Vibration test: vibration number 11.7 ~ 20Hz/amplitude: 11 ~ 4mm/ time: up and down 2h, about 2h, 2h before and after 2h/acceleration 4 ~ 5g

Drop test: 1 meter (hand drop), 2 meters (bicycle fall, fall from the frame)/ concrete floor/four times/four sides

Impact test: 10mm flat wooden platform/Distance: 1 m/diameter 20mm mass 36g steel ball free fall/top surface and side once

Low temperature impact: When the sample is cold to -5℃, maintain this temperature for three hours and then carry out the impact test

Irradiation test: long time irradiation brightness test, low voltage irradiation test, light brightness, light color

Bicycle lamp noun sorting:

Factors causing uneven temperature inside the high and low temperature humid heat test chamber

The high and low temperature damp heat test chamber is the main equipment in temperature and humidity environment testing, mainly used for conducting high and low temperature and humidity tests to evaluate the temperature and humidity resistance of products, so as to ensure that our products can work and operate normally under any environmental conditions. However, if the temperature uniformity exceeds the allowable deviation range during environmental testing in the high and low temperature damp heat test chamber, the data obtained from the test is unreliable and cannot be used as the ultimate tolerance for high and low temperature testing of materials or products. So what are the reasons that can cause temperature uniformity to exceed the allowable deviation range?

1. The differences in the test objects in the high and low temperature humid heat test chamber: If enough test samples that affect the overall internal heat convection are placed in the high and low temperature test chamber, it will inevitably affect the uniformity of the internal temperature to a certain extent, that is, the temperature uniformity. For example, if LED lighting products are placed, the products themselves emit light and heat, becoming a thermal load, which has a significant impact on temperature uniformity.

2. The design issues make it difficult to achieve a uniform symmetrical structure in the internal structure and space of the high and low temperature wet heat test chamber, and an asymmetric structure will inevitably lead to deviations in the uniformity of internal temperature. This aspect is mainly reflected in sheet metal design and processing, such as the design of air ducts, the placement of heating pipes, and the size of fan power. All of these will affect the temperature uniformity inside the box.

3. Due to the different structures of the inner wall of the high and low temperature humid heat test chamber, the temperature of the inner wall of the test chamber will also be uneven, which will affect the heat convection inside the working chamber and cause deviation in the internal temperature uniformity.

4. Due to the different heat transfer coefficients on the front, back, left, right, top, and bottom surfaces of the box wall in the studio, some have threading holes, detection holes, testing holes, etc., which cause local heat dissipation and transfer, resulting in uneven temperature distribution of the box body and uneven radiative convective heat transfer on the box wall, affecting temperature uniformity.

5. The sealing of the box and door is not strict, for example, the sealing strip is not customized and has seams, and the door leaks air, which affects the temperature uniformity of the workspace.

6. If the volume of the test object is too large, or if the position or method of placing the test object in the high and low temperature damp heat test chamber is inappropriate, it will obstruct the air convection inside and also cause significant temperature uniformity deviation. Placing the test product next to the air duct seriously affects the circulation of air, and of course, the uniformity of temperature will be greatly affected.

In summary, all of these points are the main culprits that affect the temperature uniformity inside the high and low temperature humid heat test chamber. We hope that everyone can investigate from these aspects one by one, which will surely solve your confusion and difficulties.

Dear customer:

Hello, our company is a high-quality development team with strong technical strength, providing high-quality products, complete solutions, and excellent technical services to our customers. The main products include walk-in constant temperature and humidity testing chambers, UV accelerated aging testing machines, rapid temperature change testing chambers, walk-in environmental testing chambers, UV aging testers, constant temperature and humidity chambers, etc. Our company adheres to the principle of building a business with integrity, maintaining quality, and striving for progress. With a more determined pace, we continuously climb new heights and contribute to the national automation industry. We welcome new and old customers to confidently choose the products they like. We will serve you wholeheartedly!

Natural Convection Test (No Wind Circulation Temperature Test) and Specification

Home entertainment audio-visual equipment and automotive electronics are one of the key products of many manufacturers, and the product in the development process must simulate the adaptability of the product to temperature and electronic characteristics at different temperatures. However, when the general oven or constant temperature and humidity test chamber is used to simulate the temperature environment, both the oven and constant temperature and humidity test chamber have a test area equipped with a circulating fan, so there will be wind speed problems in the test area. During the test, the temperature uniformity is balanced by rotating the circulating fan. Although the temperature uniformity of the test area can be achieved through the wind circulation, the heat of the product to be tested will also be taken away by the circulating air, which will be significantly inconsistent with the actual product in the wind-free use environment (such as the living room, indoor). Because of the relationship of wind circulation, the temperature difference of the product to be tested will be nearly 10 ° C, in order to simulate the actual use of environmental conditions, many people will misunderstand that only the test machine can produce temperature (such as: oven, constant temperature and humidity test chamber) can carry out natural convection test, in fact, this is not the case. In the specification, there are special requirements for wind speed, and a test environment without wind speed is required. Through the natural convection test equipment (no forced wind circulation test), the temperature environment without fan is generated (natural convection test), and then the test integration test is carried out to detect the temperature of the product under test. This solution can be applied to the actual ambient temperature test of household related electronic products or confined Spaces (such as: Large LCD TV, car cockpit, car electronics, laptop, desktop computer, game console, stereo... Etc.).

The difference of the test environment with or without wind circulation for the test of the product to be tested:

If the product to be tested is not energized, the product to be tested will not heat itself, its heat source only absorbs the air heat in the test furnace, and if the product to be tested is energized and heated, the wind circulation in the test furnace will take away the heat of the product to be tested. Every 1 meter increase in wind speed, its heat will be reduced by about 10%. Suppose to simulate the temperature characteristics of electronic products in an indoor environment without air conditioning, if an oven or a constant temperature and humidity test chamber is used to simulate 35 ° C, although the environment in the test area can be controlled within 35 ° C through electric heating and freezing, the wind circulation of the oven and the constant temperature and humidity test chamber will take away the heat of the product to be tested, making the actual temperature of the product to be tested lower than the temperature in the real state of no wind. Therefore, it is necessary to use a natural convection testing machine without wind speed to effectively simulate the actual windless environment (such as: indoor, non-starting car cockpit, instrument chassis, outdoor waterproof box... Such environment).

Indoor environment without wind circulation and solar radiant heat irradiation:

Through the natural convection tester, simulate the client's actual use of the real air conditioning convection environment, hot spot analysis and heat dissipation characteristics of the product evaluation, such as the LCD TV in the photo not only to consider its own heat dissipation, but also to evaluate the impact of thermal radiation outside the window, thermal radiation for the product may produce additional radiant heat above 35 ° C.

Comparison table of wind speed and IC product to be tested:

When the ambient wind speed is faster, the IC surface temperature will also take away the IC surface heat due to the wind cycle, resulting in faster wind speed and lower temperature, when the wind speed is 0, the temperature is 100℃, but when the wind speed reaches 5m/s, the IC surface temperature has been below 80℃.

Unforced air circulation test:

According to the specification requirements of IEC60068-2-2, in the high temperature test process, it is necessary to carry out the test conditions without forced air circulation, the test process needs to be maintained under the wind-free circulation component, and the high temperature test is carried out in the test furnace, so the test cannot be carried out through the constant temperature and humidity test chamber or oven, and the natural convection tester can be used to simulate the free air conditions.

Description of test conditions:

Test specification for unforced air circulation: IEC-68-2-2, GB2423.2, GB2423.2-89 3.3.1

Unforced air circulation test: The test condition of unforced air circulation can simulate the free air condition well

GB2423.2-89 3.1.1:

When measuring under free air conditions, when the temperature of the test sample is stable, the temperature of the most hot spot on the surface is more than 5℃ higher than the temperature of the surrounding large device, it is a heat dissipation test sample, otherwise it is a non-heat dissipation test sample.

GB2423.2-8 10(Test heat dissipation test sample temperature gradient test) :

A standard test procedure is provided to determine the adaptability of thermal electronic products (including components, equipment level other products) to use at high temperatures.

Test requirements:

a. Testing machine without forced air circulation (equipped with a fan or blower)

b. Single test sample

c. The heating rate is not greater than 1℃/min

d. After the temperature of the test sample reaches stability, the test sample is energized or the home electrical load is carried out to detect the electrical performance

Natural convection test chamber features:

1. Can evaluate the heat output of the product to be tested after power, to provide the best distribution uniformity;

2. Combined with digital data collector, effectively measure the relevant temperature information of the product to be tested for synchronous multi-track analysis;

3. Record the information of more than 20 rails (synchronous record the temperature distribution inside the test furnace, multi-track temperature of the product to be tested, average temperature... Etc.).

4. The controller can directly display the multi-track temperature record value and record curve; Multi-track test curves can be stored on a USB drive via the controller;

5. The curve analysis software can intuitively display the multi-track temperature curve and output EXCEL reports, and the controller has three kinds of display [Complex English];

6. Multi-type thermocouple temperature sensor selection (B, E, J, K, N, R, S, T);

7. Scalable to increase heating rate & control stability planning.

PCB Performs Accelerated Tests of Ion Migration and CAF Through HAST

PCB In order to ensure its long-term use quality and reliability, need to carry out SIR (Surface Insulation Resistance) surface insulation resistance test, through its test method to find out whether the PCB will occur MIG(ion migration) and CAF(glass fiber anode leakage) phenomenon, Ion migration is performed in a humidified state (e.g. 85℃/85%R.H.) with a constant bias (e.g. 50V), the ionized metal moves between the opposite electrodes (cathode to anode growth), the relative electrode is reduced to the original metal and precipitated dendritic metal phenomenon, often resulting in short circuit, ion migration is very fragile, the current generated at the moment of power will make the ion migration itself dissolves and disappears, MIG and CAF commonly used norms: IPC-TM-650-2.6.14., IPC-SF-G18, IPC-9691A, IPC-650-2.6.25, MIL-F-14256D, ISO 9455-17, JIS Z 3284, JIS Z 3197... But its test time is often 1000h, 2000h, for the cyclical products slow emergency, and HAST is a test method is also the name of the equipment, HAST is to improve environmental stress (temperature, humidity, pressure), in the unsaturated humidity environment (humidity: 85%R.H.) Speed up the test process to shorten the test time, used to assess PCB pressing, insulation resistance, and the moisture absorption effect of related materials, shorten the test time of high temperature and humidity (85℃/ 85%R.H. /1000h→110℃/ 85%R.H. /264h), the main reference specifications of PCB HAST test are: JESD22-A110-B, JCA-ET-01, JCA-ET-08.

HAST Accelerated Life Mode:

★ Increase temperature (110℃, 120℃, 130℃)

★ Maintain high humidity (85%R.H.)

Taken the pressure (110 ℃ / / 0.12 MPa, 120 ℃, 85% / 85% / 85% 0.17 MPa, 130 ℃ / / 0.23 MPa)

★ Extra bias (DC)

HAST test conditions for PCB:

1. Jca-et-08:110, 120, 130 ℃/85%R.H. /5 ~ 100V

2. High TG epoxy multilayer board: 120℃/85%R.H./100V, 800 hours

3. Low inductance multilayer board: 110℃/85% R.H./50V/300h

4. Multi-layer PCB wiring, material: 120℃/85% R.H/100V/ 800h

5. Low expansion coefficient & low surface roughness halogen-free insulation material: 130℃/ 85% R.H/12V/240h

6. Optically active covering film: 130℃/ 85% R.H/6V/100h

7. Heat hardening plate for COF film: 120℃/ 85% R.H/100V/100h

Lab Companion HAST High Acceleration Stress Test System (JESD22-A118/JESD22-A110)

The HAST independently developed by Macro Technology fully owns independent intellectual property rights, and the performance indicators can fully benchmark foreign brands. It can provide single-layer and double-layer models and two series of UHAST BHAST. It solves the problem of long-term dependence on imports of this equipment, long delivery time of imported equipment (up to 6 months) and high price. High Accelerated Stress Testing (HAST) combines high temperature, high humidity, high pressure, and time to measure the reliability of components with or without electrical bias. HAST testing accelerates the stress of more traditional testing in a controlled way. It is essentially a corrosion failure test. Corrosion-type failure is accelerated, and defects such as packaging seals, materials and joints are detected in a relatively short time.

Reliability of Ceramic Substrate

Ceramic PCB (Ceramic Substrate) refers to a special process plate where copper foil is directly bonded to the surface (single or double) of alumina (Al2O3) or aluminum nitride (AlN) ceramic substrate at high temperature. The ultra-thin composite substrate has excellent electrical insulation performance, high thermal conductivity, excellent soldering and high adhesion strength, and can be etched into a variety of graphics like PCB board, with great current carrying capacity. Therefore, the ceramic substrate has become the basic material of high-power electronic circuit structure technology and interconnect technology, which is suitable for products with high caloric value (high-brightness LED, solar energy), and its excellent weather resistance can be applied to harsh outdoor environments.

Main application products: high power LED carrier board, LED lights, LED street lights, solar inverter

Ceramic substrate features:

Structure: Excellent mechanical strength, low warping, thermal expansion coefficient close to silicon wafer (aluminum nitride), high hardness, good processability, high dimensional accuracy

Climate: Suitable for high temperature and humidity environment, high thermal conductivity, good heat resistance, corrosion and wear resistance, UV& yellowing resistance

Chemistry: Lead-free, non-toxic, good chemical stability

Electrical: high insulation resistance, easy metallization, circuit graphics and strong adhesion

Market: Abundant materials (clay, aluminum), easy to manufacture, low price

PCB material thermal characteristics comparison (conductivity) :

Glass fiber board (traditional PCB) : 0.5W/mK, aluminum substrate: 1~2.2W/mK, ceramic substrate: 24[alumina]~170[aluminum nitride]W/mK

Material heat transfer coefficient (unit W/mK) :

Resin: 0.5, alumina: 20-40, silicon carbide: 160, aluminum: 170, aluminum nitride: 220, copper: 380, diamond: 600

Ceramic substrate process classification:

According to the line ceramic substrate process is divided into: thin film, thick film, low temperature co-fired multi-layer ceramic (LTCC)

Thin Film Process (DPC) : Precise control of component circuit design (line width and film thickness)

Thick film process (Thick film) : to provide heat dissipation and weather conditions

Low temperature co-fired multilayer ceramic (HTCC) : The use of glass ceramics with low sintering temperature, low melting point, high conductivity of precious metal co-fired characteristics, multi-layer ceramic substrate) and assembly.

Low temperature co-fired multilayer ceramics (LTCC) : Stack several ceramic substrates and embed passive components and other ics

Thin film ceramic substrate process:

· Pretreatment → sputtering → photoresistance coating → exposure development → line plating → film removal

· Lamination → hot pressing → degreasing → substrate firing → circuit pattern formation → circuit firing

· Lamination → surface printed circuit pattern → hot pressing → degreasing → co-firing

· Printed circuit graphics → lamination → hot pressing → degreasing → co-firing

Ceramic substrate reliability test conditions:

Ceramic substrate high temperature operation: 85℃

Ceramic substrate low temperature operation: -40℃

Ceramic substrate cold and thermal shock:

1. 155℃(15min)←→-55℃(15min)/300cycle

2. 85 ℃ (30 min) please - - 40 ℃ (30 min)/RAMP: 10 min (12.5 ℃ / min) / 5 cycle

Ceramic substrate adhesion: Stick to the surface of the board with 3M#600 tape. After 30 seconds, tear quickly in a 90° direction with the surface of the board.

Ceramic substrate red ink experiment: Boil for one hour, impermeable

Test equipment:

1.High and low temperature humid heat test chamber

2. Three-box gas type cold and heat shock test chamber

Structural characteristics of temperature and humidity control box

The full name of the temperature and humidity control chamber is "Constant Temperature and Humidity Test Chamber", which is an essential testing equipment in aviation, automotive, home appliances, scientific research and other fields. It is used to test and determine the parameters and performance of electrical, electronic and other products and materials after high temperature, low temperature, humidity and heat or constant temperature environment changes. It can be mainly divided into "desktop" and "vertical" according to testing requirements and standards, with the difference being the temperature and humidity that can be achieved. The vertical type can be used for low temperature and drying below room temperature, while the desktop type can only be used for temperature and high humidity above room temperature.

Suitable for various small electrical appliances, instruments, materials, and components for wet heat testing, it is also suitable for conducting aging tests. This test chamber adopts the most reasonable structure and stable and reliable control method currently available, making it aesthetically pleasing, easy to operate, safe, and with high precision in temperature and humidity control. It is an ideal equipment for conducting constant temperature and humidity tests.

1) The test box body is in the form of an integral structure, with the refrigeration system located at the lower rear of the box and the control system located at the upper part of the test box.

(2) Inside the air duct interlayer at one end of the studio, there are devices such as heaters, refrigeration evaporators, and fan blades distributed; On the left side of the test box, there is a Ø 50 cable hole, and the test box is a single door (stainless steel embedded door handle)

(3) The double-layer high temperature and anti-aging silicone rubber seal can effectively ensure the temperature loss of the test chamber

(4) There are observation windows, frost prevention devices, and switchable lighting fixtures on the box door. The observation window adopts multi-layer hollow tempered glass, and the inner adhesive sheet conductive film is heated and defrosted. The lighting fixtures use imported brand Philips lamps, which can effectively observe the experimental changes in the studio from all angles.

Dear customer:

Hello, our company is a high-quality development team with strong technical strength, providing high-quality products, complete solutions, and excellent technical services to our customers. The main products include walk-in constant temperature and humidity testing chambers, UV accelerated aging testing machines, rapid temperature change testing chambers, walk-in environmental testing chambers, UV aging testers, constant temperature and humidity chambers, etc. Our company adheres to the principle of building a business with integrity, maintaining quality, and striving for progress. With a more determined pace, we continuously climb new heights and contribute to the national automation industry. We welcome new and old customers to confidently choose the products they like. We will serve you wholeheartedly!