JPS5773154A - Manufacture of iron-base sintered machine parts with high strength and wear resistance - Google Patents
Manufacture of iron-base sintered machine parts with high strength and wear resistanceInfo
- Publication number
- JPS5773154A JPS5773154A JP55150535A JP15053580A JPS5773154A JP S5773154 A JPS5773154 A JP S5773154A JP 55150535 A JP55150535 A JP 55150535A JP 15053580 A JP15053580 A JP 15053580A JP S5773154 A JPS5773154 A JP S5773154A
- Authority
- JP
- Japan
- Prior art keywords
- sintering
- manufacture
- machine parts
- wear resistance
- high strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To manufacture iron-base machine parts with high strength and high wear resistance by sintering a mixed green compact of alloy steel powder having a prescribed composition and graphite powder by heating and holding in an atmosphere of a reducing gas, and by oil-hardening the hot sintered body immediately after the sintering.
CONSTITUTION: Powdered starting material ≥70wt% of which is ≥1 kind of alloy steel powder contg., by wt., 0.30W8.0% in total of one or more among 0.10W2.3% Mn, 0.10W5.5% Cr and 0.10W7.0% Mo, ≤0.10% Si, ≤0.01% Al, ≤0.01% Ti, ≤0.20% C and ≥1.0% O is prepared. This powdered material is mixed with an adequate amount of graphite powder and compacted. The green compact is heated and held at 1,100W1,200°C in an atmosphere of a decarburizing reducing gas. Thus, deoxidation, alloying of carbon of the graphite powder and sintering are allowed to proceed, and simultaneously decarburization is performed to form a hypoeutectoid region with alloyed carbon at the surface part and a hyper-eutectoid composition with alloyed carbon at the central part. The hot sintered body immediately after the sintering is oil- hardened and tempered at ≤250°C as required to manufacture the titled sintered machine parts.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55150535A JPS5773154A (en) | 1980-10-27 | 1980-10-27 | Manufacture of iron-base sintered machine parts with high strength and wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55150535A JPS5773154A (en) | 1980-10-27 | 1980-10-27 | Manufacture of iron-base sintered machine parts with high strength and wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5773154A true JPS5773154A (en) | 1982-05-07 |
Family
ID=15498984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55150535A Pending JPS5773154A (en) | 1980-10-27 | 1980-10-27 | Manufacture of iron-base sintered machine parts with high strength and wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5773154A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61295302A (en) * | 1985-06-25 | 1986-12-26 | Toyota Motor Corp | Low-alloy iron powder for sintering |
| JPS62167843A (en) * | 1986-01-17 | 1987-07-24 | Toyota Motor Corp | Production of high-strength sintered alloy |
-
1980
- 1980-10-27 JP JP55150535A patent/JPS5773154A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61295302A (en) * | 1985-06-25 | 1986-12-26 | Toyota Motor Corp | Low-alloy iron powder for sintering |
| JPS62167843A (en) * | 1986-01-17 | 1987-07-24 | Toyota Motor Corp | Production of high-strength sintered alloy |
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