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By |2017-12-12T01:57:09+00:00September 13th, 2017|injection molding|

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 [...]

injection molding design

By |2017-05-25T14:38:51+00:00May 25th, 2017|plastic mold|

The principal method by which polymer or plastics material is converted into useful products is by moulding, usually under heat and pressure, in a hollow mould or die. The material takes the shape of the [...]


By |2016-09-04T08:47:50+00:00September 4th, 2016|injection molding|

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, [...]

features of broaching

By |2016-05-30T14:44:12+00:00May 30th, 2016|Broaching|

Tolerances and Finish The following table gives the tolerances possible through broaching and the recommended design tolerances for minimizing cost when a broaching operation is specified: Summary Holes and Splines Gear Teeth External Surfaces Tolerances [...]

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