Method of making tools or components

Details Method of making tools or components Method of making tools or components

2007-12-04

2007-12-04

Lopez, Carlos (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Introducing material under pressure into mold

C264S638000, C264S656000, C264S681000

Reexamination Certificate

active

10924857

ABSTRACT:
The present invention relates to a method of making a sintered body comprising one or more hard constituents in a binder phase by injection molding or extrusion. According to the invention, the binder system comprises 30-70 wt % poly(ethylene-co-vinylacetate) and balance (Polyethylene)-blend-(Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy)-based wax. The solids loading of the feedstock, γ, is 0.51<γ<0.53, calculated using the equation:γ=ρf-ρbρs-ρbwhereρsis the density of the material as sintered,ρbis the density of the binder system andρfis the density of the feedstock, measured with a helium pycnometer.Debinding is performed by heating in a furnace in flowing hydrogen atmosphere.

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