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US 9,005,519 B2Granted
Powder metallurgical material, production method and application thereof
AssigneeShanghai Xingluo Special Seals Co., Ltd.
InventorsHongqi Chen, Jingtao Fei
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Abstract
This invention relates to power metallurgical material, production method and application thereof. A metallurgy powder material with pressure-proof & good compactness, satisfactory to the component content requirements for 316 stainless steel, wherein, 5˜9% (by weight) of Fe3P (or Fe3PO4). The powder metallurgical material has properties of pressure resistance and corrosion resistance, and excellent compactness.
Claims7
A method for producing a product with a stainless steel powder bearing a chemical formula of Cr17Ni12Mo2, said method comprising:
- adding in said stainless steel powder a 5-9% Fe3P powder by weight for pre-processing into a basic powder;
- pressing the basic powder under a pressure of 7-9 tons/m2 into a pressed material;
- sintering the pressed material in a vacuum sintering furnace at 1050-1120° C. for 35-50 minutes in about 10 Pa vacuum into a sintered pressed material;
- and
- fluting the sintered pressed material for obtaining the product.
2 more elements
Dependencies are inferred from the claim text.