A measure (1) The quality of the blank before plating should be good. Unqualified blanks are not well plated, and plastic blanks are harder to inspect than metal blanks. After plating, there will be "pitting" or "star points." Therefore, we must pay attention to the quality of the rough before plating. First, we must understand the source of customer products, whether it is plated, special injection parts, not the first batch of injection, in order to determine the quality of rough. For unfavorable blanks, it must be polished with a cloth wheel to make it before plating. At present, domestic manufacturers with relatively good plating quality adopt such measures, and the qualified rate of finished products can generally reach over 90%. Of course, rough blanks can be plated without a good product. The surface of a full set of injection blanks is very smooth. The surface of the injection moulding surface is bright as a mirror. After the plastic parts are filled out, they should be packed separately and must not collide. (2) Do not bump the pre-treatment metallization. Before processing, the plated parts can not collide, especially about 70 °C etching roughening process, ABS plastic softening increases, the hardness decreases, if the collision is easy to rub the hair, there must be printed dots after plating. If high-required plating parts, especially large or planar parts, are not allowed to be put into the etching solution, etched and cleaned with nets, the product is required to be etched on fixtures until electroless copper plating or no Electrolytic nickel plating. Explain the status quo, problems and countermeasures of the plastic button electroplating technology. PEX Pipe,PE XC Pipe,PEXC Plastic Pipe,Flexible PEX Tubing FSPG HI-TECH CO., LTD. , https://www.fspgplastic.com
(3) Control of etching degree. Etching In order to achieve the desired surface condition of the parts to be plated, insufficient or excessive etching can result in unsatisfactory finish of the plated product or poor adhesion of the coating. Plating finish on the one hand depends on bright copper bright nickel plating, on the other hand can not ignore the degree of erosion control. In Japan, many electroplating kits are all completed online, and etching generally does not exceed 3 minutes.
Two plastic plating problems (1) appearance quality. The appearance of plastic electroplating requires a smoother surface than the electroplated surface of metal products, and the brightness can generally be achieved, but there is a certain degree of difference in the degree. It is generally believed that the bright appearance of a good hair is "black" and the visual sense of lightness is "thick". This macroscopic sensation is determined by the surface microscopic state, which means that the microscopic surface must be very smooth. The coating must not be in the form of fog, and it is extremely misty. It cannot be found under strong light or under direct vision. It can only be found under certain angles of light, so it is easily overlooked. As for defects such as exposed plastic, peeling, burrs, pitting, and poor plating, electroplating is absolutely not allowed. Some minor parts of the appraisal site, such as the opposite side, must be plated and covered with bright color, which can not be blackened, plasticized, and clipped.
(2) Internal quality. Electroplating of automobile parts and motorcycle parts or higher-grade parts requires certain technical specifications. For example, plating adhesion, copper-acetate corrosion resistance test, thermal cycle test and field test, etc. Deformation requirements. Huangyan West Park Die auto parts plating has many years of scientific research and development experience, peer considerable strength.
(4) The bath cannot be turbid. The metallization method is generally copper layer or nickel layer, which has advantages and disadvantages. From the operation point of view, electroless nickel plating is relatively stable and the plating speed is faster. In addition, it can also save expensive palladium salt, the cost is slightly lower, but the stability is poor. The bath should be kept clean and not turbid to prevent the deposition of fine particles. Otherwise, the bright copper plating will “magnify†the tiny particles to form granules. After the metallization, the wipes should be cleaned, especially the large-scale flat-plates, to prevent the particles from being deposited. In particular, the metalized copper layer cannot be omitted. Button plating technology analysis. This process for large plating parts, there may be some small or small part of plastic, can take a partial repair, with silver paste, conductive adhesive or soft lead pen repair, improve the product pass rate is indeed good. Electroplating copper liquid should also have good cleanliness. It is equipped with continuous filtered air agitation to ensure the clarification of the copper plating liquid, so as to avoid hairiness of the plating part. The copper plating bath should also have a good leveling capacity dispersion capability and operate over a wide current density range. Nickel plating should also have the above conditions, but also must pay attention to the thickness of the coating, many manufacturers often do not pay attention, that the follow-up also chrome plating, nickel layer thickness is not large, as long as the bright copper plating, nickel plating can be. In fact, corrosion resistance tests of such platings often fail to meet requirements. Therefore, plating of automobiles and motorcycle parts must be plated with double nickel, triple nickel, or nickel seals to produce microporous chromium to meet corrosion test requirements.
(5) Plating jigs should be used reasonably. The product must not only have appropriate conductive contacts, but also have proper tightness, and must be well-conducted and clamped, but it must be prevented from being deformed due to tight clamping, especially deformation after plating. It is not enough to remove the parts without deformation after the test clamp. Must take into account the large-scale deformation after plating, in particular nickel plating higher temperature deformation. Plating jigs must be well insulated and must not be plated with particles, otherwise they will cause particle burrs on the surface of the plated parts; after the chrome plated fixture must be retired chromium layer, otherwise the copper layer is easy to become powder when the chromium layer is copper plated to form the product surface glitch. This article comes from the status quo and problem analysis of plastic button electroplating technology. Analysis of electroplating technology of plastic buttons on button plating technology: Plastic electroplating, which has been produced on a scale in the world in the 1950s, and industrialization in China in the 60s to 80s. It was mainly used for buttons, buckles, and other small products. Coating was not required. Peeling, the surface can be like metal. With the development of the times, plastics electroplating applications have also been expanding, from the original small pieces, a small amount of applications to large-scale, large-scale use, from decorative applications to functional engineering applications, and so on the quality of the coating is also increasing. At present, the quality of plating parts in China's Guangdong Province and Zhejiang Province is relatively high, and its appearance can be compared with foreign advanced products to meet the quality requirements of foreign-funded enterprises. Sharing the status quo, problems and countermeasures of plastic button electroplating technology. However, the internal quality is not perfect because of the test method test specifications.
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