JPS5773155A - 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
- JPS5773155A JPS5773155A JP55150536A JP15053680A JPS5773155A JP S5773155 A JPS5773155 A JP S5773155A JP 55150536 A JP55150536 A JP 55150536A JP 15053680 A JP15053680 A JP 15053680A JP S5773155 A JPS5773155 A JP S5773155A
- Authority
- JP
- Japan
- Prior art keywords
- machine parts
- iron
- heated
- sintered body
- wear resistance
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 238000005238 degreasing Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000012254 powdered material Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To manufacture iron-base sintered 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 at a specified temp., oil-hardening the sintered body at onece, heating it in a nonoxidizing atmosphere to precipitate spheroidal carbide after degreasing, and carrying out oil hardening again.
CONSTITUTION: Powdered starting material contg., by wt., 0.40W8.0% in total of one or more among 0.10W2.3% Mn, 0.10W5.5% Cr, 0.0W7.0% Mo, 0.01W3.5% V, 0.10W8.0% W and 0.01W3.0% Nb, and a prescribed percentage each of Si, Al, Ti, C and O is prepared. A green compact of the powdered material and graphite powder is heated and held at 1,130W1,200°C in an atmosphere of a decarburizing reducing gas to obtain a sintered body having a higher alloyed carbon content at the central part than at the surface part. The hot sintered body is oil-hardened, degreased, and heated to 500°CW a temp. 200°C below the Ac1 transformation temp. in a nonoxidizing atmosphere to precipitate spheroidal carbide. It is then heated and held at 700W 900°C to carry out oil hardening. Thus, the titled iron-base sintered machine parts are manufactured.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55150536A JPS5773155A (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 |
|---|---|---|---|
| JP55150536A JPS5773155A (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 |
|---|---|
| JPS5773155A true JPS5773155A (en) | 1982-05-07 |
Family
ID=15499007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55150536A Pending JPS5773155A (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) | JPS5773155A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152302A (en) * | 1984-08-20 | 1986-03-15 | Daido Steel Co Ltd | Alloy steel powder for powder metallurgy |
| JPS62167843A (en) * | 1986-01-17 | 1987-07-24 | Toyota Motor Corp | Production of high-strength sintered alloy |
| JPH04165002A (en) * | 1990-10-25 | 1992-06-10 | Kawasaki Steel Corp | High compressibility cr base alloy steel powder and manufacture of high strength sintered material using it |
| JP2011508091A (en) * | 2007-12-27 | 2011-03-10 | ホガナス アクチボラグ （パブル） | Low alloy steel powder |
-
1980
- 1980-10-27 JP JP55150536A patent/JPS5773155A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152302A (en) * | 1984-08-20 | 1986-03-15 | Daido Steel Co Ltd | Alloy steel powder for powder metallurgy |
| JPS62167843A (en) * | 1986-01-17 | 1987-07-24 | Toyota Motor Corp | Production of high-strength sintered alloy |
| JPH04165002A (en) * | 1990-10-25 | 1992-06-10 | Kawasaki Steel Corp | High compressibility cr base alloy steel powder and manufacture of high strength sintered material using it |
| JP2011508091A (en) * | 2007-12-27 | 2011-03-10 | ホガナス アクチボラグ （パブル） | Low alloy steel powder |
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