As we all know,
plastic molds can be said to be very widely used in our current lives, and the basic procedure of plastic mold polishing to obtain high-quality polishing results, the most important thing is to have high-quality oilstone, sandpaper and diamond grinding paste. Polishing tools and accessories. The general process of plastic mold polishing is as follows:
Precision plastic mold
1, fine throwing
Fine polishing mainly uses diamond abrasive paste. If the polishing cloth wheel is mixed with diamond abrasive powder or abrasive paste for polishing, the usual polishing order is 9μm (#1800) ~ 6μm (#3000) ~ 3μm (#8000). 9μm diamond abrasive paste and polishing cloth wheel can be used to remove hair-like wear marks left by #1200 and #1500 sandpaper. Then use sticky felt and diamond paste for polishing, the order is 1μm (#14000) ~ 1/2μm (#60000) ~ 1/4μm (#100000). The polishing process with accuracy requirements above 1μm (including 1μm) can be carried out in a clean polishing room in the mold processing workshop. For more precise polishing, an absolutely clean space is necessary. Dust, smoke, dandruff and saliva can all scrap the high-precision polished surface obtained after hours of work.
2, rough throw
The surface after milling, electric spark, grinding, etc. can be polished by using a rotating surface polisher or ultrasonic grinder with a speed of 35 000-40 000 rpm. The commonly used method is to remove the white electric spark layer using wheels with diameter Φ3mm and WA#400. Then there is manual whetstone grinding, and the strips of whetstone are added with kerosene as a lubricant or coolant. The general order of use is #180~#240~#320~#400~#600~#800~#1000. Many mold manufacturers choose to start with #400 in order to save time.
3, semi-precision throwing
Semi-precision polishing mainly uses sandpaper and kerosene. The number of sandpaper is: #400~#600~#800~#1000~#1200~#1500. In fact, #1500 sandpaper only uses die steel suitable for hardening (above 52HRC), not pre-hardened steel, because it may cause burns on the surface of pre-hardened steel.
⒋ fine throwing
Use abrasive paste for fine polishing, 8000, 10000 will reach the mirror surface.
The above content is an introduction to the polishing process of plastic molds, do you know that?
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