introduction to polishing
Polishing is essentially the removal of metal by the action of free abrasive grains carried to the work piece by a tool. The difference between these methods is only the degree of removal. […]
Polishing may achieve special optical properties in a product
Polishing may achieve special optical properties in a product. When enlight beams pass through the product wall( compact discs, mirrors, etc.), any major unevenness or waviness will distort the light and result in poor performance of the product.
Polishing may enhance the appearance of the product
Polishing may enhance the appearance of the product. This is the most common requirement in plastic molding. It should be noted, however, […]
Polishing may facilitate ejection
Polishing may facilitate ejection. This applies generally to the finish of the core, including side cores, in cases where the product has projections produced by deep recesses in the cavity or where there is little draft angle specified, the cavity must also be free of any roughness that prevent easy ejection.
Polishing may prevent stress risers in a product
Polishing may prevent stress risers in a product. Any sharp indent or corner in hardened mold steel, usually created during grinding, will increase the risk of breakage caused by stress concentration. Such corners must be polished to remove the shape “ gouges”.
A “different” type of mold is the Hybrid Mold
For years we have been hearing about the virtues of aluminum molds for injection parts, and First-rate mold company’s Mold Builders has built its fair share—mostly for special-purpose applications that did not require many actions. For smaller molds using specialty aluminum has its benefits; and, if cycle times are critical, you can justify the high [...]
The mold surface roughness is a very important technical parameter in mold making
the mold surface roughness is a very important technical parameter in mold making, because the surface finish of the molding area directly affects the surface roughness of the plastic part. […]
how to design a spure bush
but how to design a spure bush, I have some principles in the followin: […]
How to quickly and efficiently polish an Aluminum mold
Blow molds and many prototype molds are made from aluminum. Aluminum is a very soft material and requires special polishing procedures. A fine finish can be achieved, although it may never be as fine as the finish that is possible on steel. The following is a basic polishing procedure for aluminum. In time and with [...]
How to Polish The Ultimate Rib
Take a brass lap, dress it to half the thinness of the rib, take a 220-grit, medium, hard-bond, aluminum oxide, nonoil-filled stone and slice it to half the thinness of the rib. […]