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What are the advantages of CNC machining of radiator parts?

For friends who have been in contact with the radiator component industry, they often see or hear "CNC machining", but too much exposure does not necessarily mean that many people understand. In fact, many questions are still about CNC machining. What are the advantages? Let's take a closer look. CNC machining is an index-controlled machine tool machining, which is a method of using digital information to control the machining process. Traditional mechanical processing is done manually by machine tools. During processing, the mechanical cutter is shaken to cut metal, and the accuracy is measured with calipers and other tools. However, traditional artificial intelligence processing is far from being able to meet the needs of production development. Therefore, the emergence of CNC machining provides the possibility for the standardization, precision and efficiency of mechanical product processing. The CNC machining process in the radiator component industry also shines. The

How Do Cnc Swiss Machines Work

How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound  machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch  machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the  machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

Talking about 6 ways to reduce the defect rate of PCB for vehicles

The automotive electronics market is the third largest application area of ​​PCBs after computers and communications. With the gradual evolution and development of automobiles from traditional mechanical products to intelligent, informatized, and mechatronics high-tech products, electronic technology has been widely used in automobiles, whether it is engine systems, chassis systems, Security systems, information systems, and in-vehicle environmental systems all use electronic products without exception. The automotive market has obviously become another bright spot in the electronic consumer market. The development of automotive electronics has naturally driven the development of automotive PCBs.
Among the key applications of PCBs today, PCBs for automobiles occupies an important position. However, due to the special working environment, safety and high current requirements of the car, it has high requirements on the reliability and environmental adaptability of the PCB, and the types of PCB technology involved are also wide. This is a problem for PCB companies. Challenge; For manufacturers who want to develop the automotive PCB market, they need to do more understanding and analysis of this new market.
Automotive PCBs particularly emphasize high reliability and low DPPM. So, does our company have the accumulation of technology and experience in high-reliability manufacturing? Is it consistent with the future product development direction? In terms of process control, is it able to do well in accordance with the requirements of TS16949? Has a low DPPM been achieved? All these need to be carefully evaluated. Just seeing this attractive piece of cake and entering blindly will bring harm to the enterprise itself.
The following are representative parts of the special practices in the testing process of professional PCB manufacturers for automobiles, for reference to the majority of PCB colleagues:
1, the second test method
Some PCB manufacturers adopt the “secondary test method” to increase the rate of finding defective boards that have undergone the first high-voltage electrical breakdown.
2, bad board foolproof test system
More and more PCB manufacturers have installed “good board marking system” and “bad board error prevention box” in the light board tester to effectively avoid human leakage. The good board marking system marks the tested PASS boards for the testing machine, which can effectively prevent the tested boards or bad boards from flowing into the hands of customers. The bad board error-proof box means that during the test, when the PASS board is tested, the test system outputs the signal that the box is opened; on the contrary, when the bad board is tested, the box is closed to allow the operator to correctly place the tested circuit board.
3. Establish a PPm quality system
At present, the PPm (Partspermillion, parts per million defect rate) quality system has begun to be widely used in PCB manufacturers. Among the many customers of our company, it is worth learning from the application of HitachiChemICal in Singapore and the results*. There are more than 20 people in this factory who are responsible for the statistical analysis of online PCB quality abnormalities and PCB quality abnormal returns. Using the statistical analysis method of SPC production process, each bad board and each returned defective board are classified and statistically analyzed, and combined with auxiliary tools such as microsectioning to analyze in which production process the bad and defective boards are produced. According to the statistical data results, we can solve the problems in the process purposefully.
4. Comparative test method
Some customers use two different brands of PCBs for comparative testing in different batches of PCBs, and track the PPm of the corresponding batches, so as to understand the performance status of the two testers, and then choose a better performance tester to test automotive PCBs.
5. Improve test parameters
Choose higher test parameters to strictly detect this kind of PCB. Because if you choose a higher voltage and threshold, increase the number of high-voltage read leakage, which can improve the detection rate of PCB defective boards. For example, a large Taiwanese-funded PCB company in Suzhou uses 300V, 30M, and 20 ohms to test automotive PCBs.
6. Periodically verify the parameters of the tester
After long-term operation of the tester, the internal resistance and other related test parameters will all deviate. Therefore, the machine parameters need to be adjusted regularly to ensure the accuracy of the test parameters. Test equipment is maintained in a considerable part of large PCB companies for half a year or a year, and internal performance parameters are adjusted. The pursuit of “zero defect” automotive PCB has always been the direction of the efforts of the majority of PCB people. However, due to the limitations of process equipment and raw materials, the world’s top 100 PCB companies are still exploring ways to reduce PPm.

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