SIZE RANGE
Generally from 2mm to an envelope size of approximately 50mm, but lengths up to 150mm are possible. Maximum weight - approximately 100 grams.
QUANTITIES
Typically 20,000 or more per year, but smaller quantities can be economically viable, depending on size, complexity etc.
MATERIALS
MIM parts have excellent strength, ductility, magnetic response and can be bent, welded, hardened and treated like any other metal.
Aluminium and Zinc are not suitable for MIM.
DIMENSIONAL TOLERANCES
Typical tolerances are shown in the accompanying table. Where closer tolerances are required, additional operations such as coining and setting can be carried out. Even non-toleranced dimensions will have excellent repeatability.
SURFACE FINISH
Generally 1.6 microns (63CLA, N7)
MIM parts are ideal for vibratory polishing, chemical blacking, electroplating etc.
TOOLING
Hardened steel dies are used, similar in design to injection dies for plastics.
It is often possible to combine different parts in one tool.
DESIGN PRINCIPLES
These follow similar guidelines to plastic injection mouldings. Square holes, threads, lettering, teeth and serrations can all be produced.
QUALITY
Accredited to BS EN ISO 9001:2000
Although our production facilities are completely autonomous, we share the extensive testing capabilities of our associated company P.I. Castings Ltd, including mechanical test, analysis, x-ray and dye penetrant.
ALTERNATIVE PROCESSES
If your requirements are not suitable for MIM, our associated company P.I. Castings Ltd, may be able to produce your parts as investment castings