Title:
METHOD FOR PRODUCING MIXED POWDER FOR POWDER METALLURGY, AND EQUIPMENT FOR PRODUCING MIXED POWDER FOR POWDER METALLURGY
Document Type and Number:
WIPO Patent Application WO/2018/079160
Kind Code:
A1
Abstract:
Provided are a method and equipment for producing a mixed powder for powder metallurgy, which ensure high safety and have excellent production efficiency. The method for producing a mixed powder for powder metallurgy comprises: a primary mixing/stirring step for mixing and stirring a raw material including an iron-based powder, a powder for an alloy, a binder, and an auxiliary raw material using a first mixing/stirring device provided with a heating means; a secondary mixing/stirring step for mixing and stirring the raw material after the primary mixing/stirring step using a second mixing/stirring device which is different from the first mixing/stirring device and which is provided with a cooling means; and a tertiary mixing/stirring step for mixing and stirring the raw material after the secondary mixing/stirring step using a third mixing/stirring device which is different from the first mixing/stirring device and the second mixing/stirring device, wherein the raw material is heated up to a temperature T1 higher than a melting point Tm of the binder in the primary mixing/stirring step, and the raw material is cooled down to a temperature T2 lower than Tm in the secondary mixing/stirring step.
More Like This:
Inventors:
SONOBE AKIO (JP)
Application Number:
PCT/JP2017/034554
Publication Date:
May 03, 2018
Filing Date:
September 25, 2017
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B22F1/00
Domestic Patent References:
| WO2009025274A1 | 2009-02-26 |
Foreign References:
| JPH0247201A | 1990-02-16 | |||
| JPS5016163A | 1975-02-20 | |||
| JPH03162502A | 1991-07-12 | |||
| CN103394686A | 2013-11-20 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF:
Previous Patent: SUNROOF UNIT
Next Patent: FILM, AND LAYERED SHEET AND LAMINATED STRUCTURE BOTH INCLUDING SAID FILM
Next Patent: FILM, AND LAYERED SHEET AND LAMINATED STRUCTURE BOTH INCLUDING SAID FILM