Manufacture of parts from particulate material

Details Manufacture of parts from particulate material Manufacture of parts from particulate material

B - Operations, Transporting

22

F

25/142, 75/157

B22F 1/00 (2006.01) C04B 33/34 (2006.01) C04B 35/64 (2006.01)

Patent

CA 1062890

ABSTRACT OF THE DISCLOSURE The disclosure relates to a method of binder removal from a green body before sintering or the like wherein the green body is initially heated to a temperature above the flow point of the binder to liquify the binder and, at this elevated temperature, surrounded by a solvent for said binder in the vapor phase and at a temperature slightly above the melting point of the binder. The solvent vapor enters the green body slowly and dissolves the binder therein so that excessive stresses are not provided within the body due to binder expan- sion until binder-solvent substantially ceases to exude from the body. The body is then placed in a bath of the solvent, the solvent being maintained at a temperature above the flow point of the binder to remove remaining binder from the body.

275100

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