Question

The below illustrated tungsten carbide cutting insert is to be manufactured by Powder Metallurgy techniques. The overall part dimensions are 1.000 by .750 by .220 inch. The cutting flanks and reliefs must be lapped prior to coating the tool. The lapping process must remove at least .002 inch of material, but not more than .005 inch to achieve a final tolerance of +/- .0005 inch. The items must be manufactured at a rate of 1000 per shift.
• Describe an appropriate raw powder material for the item
• Specify compaction tool dimensions, compaction pressure and sintering temperature
• Describe a process to achieve 95% of theoretical full density for this material
• Specify a coating material and method that will enhance the machining of stainless steels with the tool

Answer 1

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