JPS5672124A - Manufacture of case hardening steel - Google Patents
Manufacture of case hardening steelInfo
- Publication number
- JPS5672124A JPS5672124A JP14770579A JP14770579A JPS5672124A JP S5672124 A JPS5672124 A JP S5672124A JP 14770579 A JP14770579 A JP 14770579A JP 14770579 A JP14770579 A JP 14770579A JP S5672124 A JPS5672124 A JP S5672124A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- hot rolling
- case hardening
- hardening steel
- manufacture
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To obtain a case hardening steel for machine structure which does not require any annealing treatment and has an uniform quality, by executing a hot rolling at a special final finishing temperature after the blank is heated to a specified tempeature, and by reducing the temperature to 600°C at a prescribed cooling rate.
CONSTITUTION: After the temperature of blank is raised to 950W1,100°C, a hot rolling process is performed at ≥800°C final finishing temperature, and then the temperature is lowered to 600°C at ≤200°C/min cooling rate. Thus a case hardening steel having a uniform quality, in which no abnormal structure is formed, is obtained. Moreover, when in the course of said hot rolling, the hot rolling process is performed so that the reduction area in a temperature range from 800°C to 920°C becomes ≤50%, said effect can be increased remarkably.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14770579A JPS6041687B2 (en) | 1979-11-16 | 1979-11-16 | Manufacturing method of case hardened steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14770579A JPS6041687B2 (en) | 1979-11-16 | 1979-11-16 | Manufacturing method of case hardened steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5672124A true JPS5672124A (en) | 1981-06-16 |
JPS6041687B2 JPS6041687B2 (en) | 1985-09-18 |
Family
ID=15436366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14770579A Expired JPS6041687B2 (en) | 1979-11-16 | 1979-11-16 | Manufacturing method of case hardened steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6041687B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61261429A (en) * | 1985-05-15 | 1986-11-19 | Daido Steel Co Ltd | Production of carburizing steel |
JPS6223929A (en) * | 1985-07-22 | 1987-01-31 | Daido Steel Co Ltd | Manufacture of steel for cold forging |
JPH05163525A (en) * | 1991-12-09 | 1993-06-29 | Sanyo Special Steel Co Ltd | Manufacture of crystal grain stabilized case hardened steel of fine structure |
-
1979
- 1979-11-16 JP JP14770579A patent/JPS6041687B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61261429A (en) * | 1985-05-15 | 1986-11-19 | Daido Steel Co Ltd | Production of carburizing steel |
JPS6223929A (en) * | 1985-07-22 | 1987-01-31 | Daido Steel Co Ltd | Manufacture of steel for cold forging |
JPH05163525A (en) * | 1991-12-09 | 1993-06-29 | Sanyo Special Steel Co Ltd | Manufacture of crystal grain stabilized case hardened steel of fine structure |
Also Published As
Publication number | Publication date |
---|---|
JPS6041687B2 (en) | 1985-09-18 |
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