JPS56136920A - Production of cr-mo type boron treated steel - Google Patents
Production of cr-mo type boron treated steelInfo
- Publication number
- JPS56136920A JPS56136920A JP3825780A JP3825780A JPS56136920A JP S56136920 A JPS56136920 A JP S56136920A JP 3825780 A JP3825780 A JP 3825780A JP 3825780 A JP3825780 A JP 3825780A JP S56136920 A JPS56136920 A JP S56136920A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- steel
- type boron
- treated steel
- production
- 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 Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To easily obtain a Cr-Mo type boron treated steel having superior performance by preparing a steel contg. specific ratios of Cr, Mo, B, etc., and subjecting the same to annealing and tempering at specific temperatures.
CONSTITUTION: A steel contg. 0.15W0.45% C, 0.05W0.80% Si, 0.30W1.70% Mn, ≤0.03% P, ≤0.03% S, 0.50W1.50% Cr, 0.2W0.80% Mo, ≤0.05% Ti, 0.02W 0.10% Al, 0.0005W0.0010% B, and consisting the balance Fe with unavoidable impurities is prepared. This is hardened from the heating temp. above AC3 point + 30°C and below the austenite grain coarsening initiation temp. Following to this, it is subjected to annealing at the temp. above 630°C and below the AC1 point in the conditions of PLM≤2.15×103 in the formula PLM=T(20+logt) [where T: absolute temp. °K, t: hour h]. If necessary, one or both of 0.01W0.10% Nb and 0.01W0.10% V may be contained in the steel.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3825780A JPS6020446B2 (en) | 1980-03-27 | 1980-03-27 | Manufacturing method of Cr-Mo boron treated steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3825780A JPS6020446B2 (en) | 1980-03-27 | 1980-03-27 | Manufacturing method of Cr-Mo boron treated steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56136920A true JPS56136920A (en) | 1981-10-26 |
| JPS6020446B2 JPS6020446B2 (en) | 1985-05-22 |
Family
ID=12520259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3825780A Expired JPS6020446B2 (en) | 1980-03-27 | 1980-03-27 | Manufacturing method of Cr-Mo boron treated steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6020446B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179356A (en) * | 2017-12-26 | 2018-06-19 | 钢铁研究总院 | A kind of high through hardening large scale bolt for wind power generation steel and its manufacturing method |
-
1980
- 1980-03-27 JP JP3825780A patent/JPS6020446B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179356A (en) * | 2017-12-26 | 2018-06-19 | 钢铁研究总院 | A kind of high through hardening large scale bolt for wind power generation steel and its manufacturing method |
| CN108179356B (en) * | 2017-12-26 | 2019-11-22 | 钢铁研究总院 | A kind of high through hardening large scale bolt for wind power generation steel and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6020446B2 (en) | 1985-05-22 |
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