SEMI-POSITIVE TYPE MOLD Because of the difficulty of fitting positive molds, and because scoring is detrimental to the finish of the casting, a semi-positive mold is a good compromise design. Fig. 28 is a diagram of a semipositive type mold.…
FORGING DIMENSIONS The maximum permissible dimensions and weight of a forging are governed by the forging hammers available. The aluminum alloy forgings permits the forging pf pieces up to 36 in. long, 6 in. wide, 6’/2 in. deep in each…
Plastic injection molding is a very cost-effective way to produce high-quality parts. Even so, there are a number of things you can do to save even more money on a project without sacrificing anything in the finished product. Use…
Financing Having become assured that the foregoing conditions have been fully met let us proceed with the train of thought. It is necessary to lay out a certain sum for plastic injection molds plant equipment and operating expenses. The…
Oil Hardening Tool Steel for Auto Car Trim Mould Making The oil hardening tool steels are probably used in plastics auto car door mould manufacture as extensively as are all of the other mold steels together. This includes carburizing steels, hobbing steels,…
