What are the polishing tool used in Mould making?

What are the polishing tool used in Mould making?

Mold polishing usually uses oil stone strips, wool wheels, sandpaper, etc., so that surface of material is plastically deformed and convex portion of workpiece surface is removed to obtain a smooth surface, which is generally performed by hand. Method of super-fine grinding and polishing is required for high surface quality. Super-fine grinding and polishing is made of a special grinding tool. In polishing liquid containing abrasive, it is pressed against machined surface to perform high-speed rotary motion. Polishing can achieve a surface roughness of Ra0.008 μm.

1) Common tools for mold polishing include: sandpaper, oilstone, felt wheel, abrasive paste, alloy trowel, diamond grinding needle, bamboo, fiber whetstone, round rotary grinding machine.
2) Sandpaper: 150#, 180#, 320#, 400#, 600#, 800#, 1 000#, 1 200#, 1 500#;
3) Oil stone: 120#, 220#, 400#, 600#;
4) Felt wheel: cylindrical, rounded, square tip;
5) Grinding paste: 1# (white) 3# (yellow) 6# (orange) 9# (green) 15# (blue) 25# (brown) 35# (red) 60# (purple);
6) Sickles: square, round, flat, triangular and other shapes;
7) Diamond grinding needle: generally 3/32 shank or 1/8 shank, with round shape, cylindrical shape, long straight column shape and long round cone shape;
8) Bamboo: Each shape is suitable for operator and shape of mold. Function is to press sandpaper and grind it on workpiece to achieve required surface roughness.
9) Fiber whetstone: 200# (black) 400# (blue) 600# (white) 800# (red)

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