Plastic mold polishing the basic procedures in order to obtain high-quality polishing, the most important thing is to have a
Quality of Whetstone, sandpaper and diamond grinding tools and polishing ointment aids.The polishing process depends on the choice of pre-processed surface conditions, such asmachining, EDM, grinding, and so on.
Plastic mold polishing the general process is as follows:
1, fine polishing
Fine polishing using diamond polishing paste key. If the polishing cloth with a mixture ofdiamond abrasive wheel abrasive powder or paste for grinding, then grind the usual order of9��m (# 1800) ~ 6��m (# 3000) ~ 3��m (# 8000). 9��m diamond polishing paste and polishing cloth wheel is used to remove the # 1200 and # 1500 sandpaper grinding marks left by the hairy. Then use the sticky carpet and polishing the diamond abrasive paste, in order of1��m (# 14000) ~ 1/2��m (# 60000) ~ 1/4��m (# 100000). Accuracy in more than1��m (including 1��m) of the polishing process in the mold shop in a clean room can bepolished. If a more sophisticated finish is absolutely necessary for a clean space. Dust,smoke, dandruff and saliva foam are likely to scrap a few hours after work to get the high-precision polishing surface.
2, rough polishing
After milling, EDM, surface grinding and other processes can be selected after the 35 000-40 000 rpm speed rotation of the surface grinding machine polishing machine or ultrasonicpolishing. Commonly used methods are the use of diameter ��3mm, WA # 400 of the sparkwheel to remove the white layer. And then grinding by hand Whetstone, Whetstone strip pluskerosene as coolant or lubricant. The use of general order # 180 ~ # 240 ~ # 320 ~ # 400 ~ #600 ~ # 800 ~ # 1000. Many mold makers in order to save time and the choice of startingfrom # 400.
3, semi-fine polishing
Semi-fine sandpaper and polishing the main use of kerosene. Sandpaper numbers were: #400 ~ # 600 ~ # 800 ~ # 1000 ~ # 1200 ~ # 1500. # 1500 sandpaper actually only suitable forhardened tool steel (52HRC above) does not apply to pre-hardened steel, as this may result in pre-hardened steel surface burns.
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