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.

Rice undergoes a series of processes during processing, including milling, polishing, and grading, and the rice color sorter plays a crucial role in this process.

• Impurity Detection: The rice color sorter can effectively identify and remove impurities from the rice, such as small stones, broken rice, and discolored grains, which is essential for improving rice quality.
• Color Sorting: Based on the color of the rice, the color sorter can separate normal rice from discolored or moldy grains, ensuring consistent color in the final product.
• Grading: The rice color sorter can perform precise grading based on different colors and appearance characteristics, meeting the diverse needs of various markets.
• Loss Reduction: By providing precise sorting, the color sorter can minimize losses caused by impurities or deteriorated rice, thereby enhancing production efficiency.
• Improving Product Image: Using a color sorter can enhance the visual quality of the rice, strengthening the brand image and increasing market competitiveness, making the product more appealing.
• Compliance with Standards: Many markets have strict quality requirements for rice, and using a color sorter helps produce products that meet these standards, increasing market access opportunities.

Color sorter technology plays a crucial role in the nut industry, enhancing product quality, safety, and efficiency. Here are some specific applications of color sorters in this sector:

1. Removal of Defective Nuts

Spotting Defects: Color sorter machines can detect defects such as black spots, mold, or discoloration on nuts. These defects are often indicators of spoilage or contamination, and removing such nuts helps ensure that only high-quality products reach the market.

Quality Assurance: By eliminating nuts with physical imperfections or undesirable color variations, color sorter improves the overall appearance and quality of the final product, which is essential for maintaining brand reputation and consumer satisfaction.

2. Contaminant Detection

Foreign Object Removal: Color sorter technology can help detect and remove foreign materials such as stones, metal fragments, or wood pieces that may be mixed with nuts. This is crucial for ensuring product safety and preventing potential hazards for consumers.

Mixing with Other Products: In cases where nuts are processed with other products or ingredients, color sorter helps segregate and remove non-nut materials or contaminants.

3. Sorting Different Nut Varieties

Variety Classification: Nuts come in various types and grades, each with distinct color profiles. Color sorter machines can sort nuts based on their color and appearance, which helps categorize different varieties and ensure that each type is packaged and marketed correctly.

Consistency in Product: Sorting nuts by variety ensures that each batch of nuts meets the specific quality standards expected by consumers and helps maintain consistency in product offerings.

 4. Enhancing Aesthetic Appeal

Visual Uniformity: Nuts with inconsistent color or appearance can be unappealing to consumers. Color sorter technology helps ensure the nuts are visually uniform, improving their market appeal and potentially commanding a higher price.

Brand Image: A well-presented product can enhance brand image and consumer trust. Consistently high-quality, visually appealing nuts help reinforce brand reputation and can lead to increased consumer loyalty.

5. Automating Production Processes

Efficiency: Traditional manual sorting of nuts is labor-intensive and time-consuming. Color sorter machines automate the sorting process, significantly increasing production speed and reducing labor costs.

Accuracy and Consistency: An automated color sorter ensures that each nut is assessed based on consistent criteria, leading to more accurate sorting and fewer errors compared to manual methods.

6. Optimizing Product Yield

Minimizing Waste: By effectively separating defective or non-standard nuts, color sorter helps reduce waste and increase the overall yield of marketable products. This contributes to more efficient use of raw materials and improved profitability.

Processing Efficiency: Efficient sorting means that only the best quality nuts are processed further, which can improve the efficiency of subsequent processing stages and reduce the incidence of rework or disposal of substandard products.

7. Practical Examples

Almonds: For almonds, color sorter machines can sort out those with defects such as dark spots or off-color kernels. This helps ensure that only premium almonds are packaged and sold.

Cashews: Cashew processing benefits from color sorter by removing broken or discolored nuts, ensuring that only whole, high-quality cashews are included in the final product.

Pistachios: Color sorter technology helps to identify and remove pistachios that are improperly colored or have shell defects, improving the overall quality and appearance of the product.

In summary, color sorter technology in the nut industry not only ensures higher quality and safer products but also enhances operational efficiency and product appeal. Its applications help producers meet consumer expectations and maintain a competitive advantage in the market.

Color Sorter is a highly efficient automated device widely used in food processing, mining, and chemicals to ensure product quality. Its working principle can be divided into the following key steps:

1. Feeding System: The materials to be sorted are delivered to the feed inlet via a conveyor belt. The feeding device starts vibrating, spreading the material evenly on the feed chute. Under the action of the vibrating chute, the material automatically forms a continuous linear arrangement and enters the photoelectric detection system at a constant speed.

2. Photoelectric Detection System: The machine is equipped with an LED light source inside, providing stable and uniform illumination for the material to ensure the most accurate color is displayed during detection. High-resolution cameras and sensors capture images of the material under specific lighting and send them to the image processing center for identification.

3. Image Processing System: The acquired images are transmitted to the control system. Hawit’s independently developed algorithm analyzes the color, shape, and size characteristics of each object. Using this algorithm, the system compares the material's features with preset standards (such as color differences between qualified and defective products) to quickly identify the materials that need to be removed.

4. Execution System: Once defective material is detected, high-pressure air valves control the opening and closing of high-pressure gas according to preset instructions. The air nozzles then blow the non-compliant material into the waste bin.

5. Output System: After processing, the finished products and waste are separately sorted into different discharge outlets, ensuring efficient sorting is achieved.

The Moving Column Double-Column Machining Center YSMD-8042 is a powerful and versatile machine that offers exceptional precision and performance. Ideal for the medical industry enthusiasts, this gantry machining center can revolutionize your manufacturing processes. To help you make the most of this advanced technology, we have compiled a comprehensive list of tips and tricks. So, let’s dive in!

1. Familiarize Yourself with the Machine’s Features and Specifications

Before you begin using the Moving Column Double-Column Machining Center YSMD-8042, take the time to thoroughly understand its features and specifications. Familiarize yourself with its control panel, software interface, and different machining modes. This knowledge will enable you to utilize the machine to its full potential and achieve optimal results.

2. Plan Your Process and Set Up Proper Tooling

Efficient planning is crucial when working with a machining center. Determine the specific steps and cutting tools required for your project to avoid unnecessary delays. Proper tooling is vital to ensure accurate and effective machining. Choose the right tools based on the materials you are working with and pay attention to tool alignment and installation.

3. Optimize Cutting Parameters

To achieve desired results and maximize efficiency, it is important to optimize the cutting parameters. Adjust the feed rate, spindle speed, and cutting depth according to the material being worked on. Experiment with different parameters to find the optimal settings for your specific application.

4. Keep the Machine Clean and Well-Maintained

Regular maintenance is key to keep your Moving Column Double-Column Machining Center YSMD-8042 in excellent condition. Clean the machine regularly, removing any swarf, debris, or coolant residues. Lubricate moving parts as recommended by the manufacturer. Regularly inspect and replace worn-out parts to prevent any disruptions in production.

5. Leverage Advanced Software Capabilities

Explore the advanced software capabilities of the machine to enhance productivity. The Moving Column Double-Column Machining Center YSMD-8042 may include features such as CAD/CAM integration, simulation capabilities, and toolpath optimization. Take advantage of these functions to streamline your workflow and improve machining efficiency.

6. Ensure Operator Training and Safety

Proper training for operators is essential to utilize the machine effectively. Invest in training programs to empower your team with the necessary skills and knowledge. Emphasize safety protocols to ensure a secure working environment and prevent accidents or machine damage caused by human error.

7. Regularly Upgrade to Stay Ahead

Machine technology is continuously evolving, with new features and functionalities being introduced regularly. Stay updated with the latest advancements by regularly upgrading your machine and software. This will enable you to stay competitive in the ever-changing medical industry.

In conclusion, the Moving Column Double-Column Machining Center YSMD-8042 has the potential to revolutionize the manufacturing processes in the medical industry. By following these tips and tricks, you can maximize the efficiency and effectiveness of this advanced gantry machining center. Empower your team with the necessary skills and knowledge, keep the machine well-maintained, and explore the software capabilities to stay ahead in the industry. Get ready to take your manufacturing to new heights with this powerful machine!

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