Electroless nickel applied in the mold industry
Does mold industry is not well-developed industrial base is a sign very well, we Huangyan, Zhejiang Province, Cixi and other places have the reputation of the hometown of mold, most of the plastic molds. Also China's plastics, rubber products are also developed, such a large amount of mold industry, such as: shoes mold, pot mold and so on. Mold is a mold key performance indicators to a number of items, mold in the production process smooth mold release. To mold bright as a mirror, very smooth and the product is ready for each factory. But the reality is not very satisfactory, because the plastic and rubber to improve performance, we have carried out their curing, the molten plastic, rubber mold of corrosion are also high. And mold are precision CNC lathes, wire cutting equipment elaborate, some very complex surface shape, of course, naturally cost a lot of money. The conventional hard chromium plating is conducted on the mold surface treatment approach, but only for some less complex mold shapes handling, Why? Because the plating performance of the entire flat, and some mold surface, many small patterns, or fine print, which is specially made, but after plating of these ideas would have gone up. Furthermore, general electroplating mold or mold stripping effect is not particularly good, always stick model. Thus, we plastic, rubber mold to implement a 40-micron electroless nickel plating. This mold surface is oil-free lubrication, plastics and rubber products will easily come off after finished, but also to extend the life of mold. We should also mention another point is that PTFE composite plating Ni-P, Ni-P coating PTFE lubrication very well, if plastic, rubber mold surface to have a layer of this coating, then the mold release would pose no major problem. Our domestic nickel-phosphorous PTFE bath has successfully developed out.
If it is even more serious glass mold, because the glass contains large amounts of silicon and silicon on the die wear great, and glass into the mold in the temperature of 600 degrees or so to the mold coating and good adhesion. So we die on glass nickel phosphorus chemical heat treatment to solve this problem. But there is one thing, the coating with heat treatment for ductility is lowered, and according to the hardness at the same time, also take care of the coating ductility.
If it is mold some special materials such as: PVC and other chlorinated plastic, in the injection molding process will release of chloride ion, cause corrosion on the mold, that chloride ions, we should be very happy, needless to say we all know, This is a high-phosphorus coating to hand play, we have a 50 micron high-phosphorus electroless nickel plating can be done it.
Of course, the market is not primarily in the mold of Zhejiang, as manufacturers often reluctant to mold their own life too long, we can often encountered around the mold factory refurbished processing tasks, a production cost of most million die, and even a few 100,000 yuan, if the can use a few thousand dollars on a new look using the old molds, we are very willing.
Renovation of the mold when we should note that the mold or without carburizing or nitriding treatment, if we generally difficult to plating. And our pre-plated in the mold cleaning to note, because many of the old mold of oil, if access to the bath, will pollute the bath, we all know, do the chemical plating solution, but what our capital, we should be very care more to make a cycle for us is a kind of savings
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