More and more foreign-funded enterprises have seen the growing Chinese mold market and have entered the Chinese mold market. Many internationally renowned automobile molds, stamping dies and injection mold companies have also entered China, and the entry into the Chinese market is very rapid. The speed is also very fast. With the development of the mold industry, the performance requirements of the mold are becoming more and more demanding, and the life problem is increasingly prominent. Using different chrome strengthening treatment processes can increase the life of the mold by several times or even several times.
The method of chrome treatment technology
chrome treatment technology is very important to the mold industry. In recent years, there has been great progress in foreign chrome treatment technology. It is useful to understand foreign countries' situation in this regard and it is beneficial to the development of China's mold industry. Today we are happy. The team will share with you the electroplating process used in foreign molds:
1. Die electroless nickel-phosphorus alloy
Plastic parts used extensively in the automotive instrumentation, electrician, and household appliance industries have also placed higher demands on injection molds.
The extensive use of chrome technology in foreign countries, especially the electroless nickel plating technology, is particularly prominent in the research and application of improving the overall performance and life of the mold. The advantages of wear-resistant electroless nickel plating are: low processing temperature (85-95) degree; thickness control of deposited layer The precision is within 2 microns of the soil; the coating is compressive stress, low stress; excellent release property. Electroless nickel-phosphorus alloy, phosphorus can be added to ensure the hardness of the coating after heat treatment to 1100HV manufacturing tools, such as drill bit, reamer, concave Dies, die-cutting tools, stampings, etc., using this electroless plating method, the thickness of the coating is not more than 10 microns.
2. Mold plating wear-resistant composite coating with chrome
Composite plating is a method of electroplating or electroless plating, in which a solution of insoluble organic and inorganic solid particles is co-deposited with a matrix metal to form a composite coating. The matrix materials of the wear-resistant composite plating are nickel, copper, cobalt, chromium and Some alloys may also be electroless nickel-phosphorus alloys, and the dispersing agents used are oxide carbide boride nitrides and various hard solid particles such as diamond. This kind of coating not only has high hardness, good wear resistance, can reduce the wear of friction parts, but also has good high temperature resistance. Therefore, it has the title of “cermet. The composite coating still has excellent wear resistance at high temperature of 400 degrees. Excellent. Shows excellent anti-adhesive wear performance. Urethane rubber mold, treated with 15% Vol fluoride-graphite particles nickel plating without using mold release agent, in the molding of engineering plastics with high forming temperature, treated by this The mold is effective.
Mold production is increasingly dependent on high-tech, high-end chrome treatment technology, the gap between China's mold industry and the world's advanced level is a great pressure, in the face of the trend of world economic integration, if it does not reach the international enterprise mold technology Levels may also stand in the domestic market. If China's mold factory does not learn from the world's most advanced mold technology, can it survive?