Methods of making spray formed rapid tools

Details Methods of making spray formed rapid tools Methods of making spray formed rapid tools

1995-12-27

1997-08-19

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264219, 264220, 164 41, 164 34, 164 46, 164516, B05B 300

Patent

active

056585063

ABSTRACT:
Method of making a rapid tool, comprising: making a plastic pattern of the tool by free form fabrication techniques following a computer aided design, the design having a base and no undercuts taken in a direction perpendicular to base; constructing a ceramic mold as the inverse of the pattern; separating the pattern from the mold by a separating movement in a direction perpendicular to the base to leave a surface defining a casting cavity within the mold; and thermally spraying tool steel particles against the casting cavity surface is a thickness exceeding 1 inch while rapidly cooling the sprayed particles to effect a net shape tool without the need for further working or heat treatment.

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