Method for sintering a carbon steel part using a hydrocolloid binder as carbon source
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United States of America Patent
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Nov 22, 2005
Grant Date -
Oct 31, 2002
app pub date -
Apr 26, 2001
filing date -
Apr 28, 2000
priority date (Note) -
Expired
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Abstract
The invention refers to a new method for preparing sintered structural parts of carbon or tool steels or high speed steel having a carbon content of up to 2% by weight, wherein an agglomerated spherical powder comprising at least 0.5% of a thermo-reversible hydrocolloid is pressed to a green body of high density which is then heated at 450-650° C. to remove the non-carbon content of the hydrocolloid and subsequently sintered at about 1100-1400° C. to structural parts having high strength properties.
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