Title:
The process for manufacturing the mother alloy and sintering hardening parts for manufacturing the parts made from sintering hardened steel
Document Type and Number:
Japanese Patent JP6227871
Kind Code:
B2
Abstract:
A master alloy used to produce the steel part and a process for producing a sinter hardened steel part from the master alloy are described. The powdered master alloy having a composition of iron, about 1 to less than 5 weight % C, about 3 to less than 15 weight % Mn, and about 3 to less than 15 weight % Cr, wherein the master alloy comprises a microstructure composed of a solid solution of the alloying elements and carbon, the microstructure comprising at least 10 volume % austenite and the remainder as iron compounds. The process comprises: preparing the master alloy, mixing the master alloy with a steel powder to produce a mixture wherein the weight % of the master alloy is from 5 to 35 weight % of the mixture, compacting the mixture into a shape of a part and sintering the mixture to produce the steel part, and controlling the cooling rate after sintering to produce sinter hardening. The master alloy powder can also be used as a sinter hardening enhancer when mixed with low-alloy steel powders.
Inventors:
Jill Resperance
Byron-Pujols, Ian
Christopherson, dennis, junior
Byron-Pujols, Ian
Christopherson, dennis, junior
Application Number:
JP2012553163A
Publication Date:
November 08, 2017
Filing Date:
February 15, 2011
Export Citation:
Assignee:
FEDERAL-MOGUL LLC
International Classes:
C22C38/00; B22F3/24; C22C33/02; B22F1/052
Domestic Patent References:
| JP9217153A | ||||
| JP63114904A |
Foreign References:
| US20050220657 | ||||
| GB1504547A |
Attorney, Agent or Firm:
Fukami patent office
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