JPS56169760A - Nonaging high-tension hot-dip zn-coated steel strip excellent in press moldability and method for producing the same - Google Patents
Nonaging high-tension hot-dip zn-coated steel strip excellent in press moldability and method for producing the sameInfo
- Publication number
- JPS56169760A JPS56169760A JP7317880A JP7317880A JPS56169760A JP S56169760 A JPS56169760 A JP S56169760A JP 7317880 A JP7317880 A JP 7317880A JP 7317880 A JP7317880 A JP 7317880A JP S56169760 A JPS56169760 A JP S56169760A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- hot
- rolled
- cold
- content
- 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
- Coating With Molten Metal (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE: To impart a press moldability to a steel plate and obtain a nonaging property and a high tensile strength by a method wherein forming a hot-dipped Zn film on the surface of a cold-rolled steel strip which contains specified amount of C, Si, Mn, P, Al and Nb respectively with the relation of Al content to N content and that of Nb content to C content being specified.
CONSTITUTION: A steel slab containing, by weight, 0.002W0.015% of C, less than 0.5% of Si, 0.04W1.2% of Mn, 0.03W0.1% of P, 0.02W0.1 and more than (N%× 4)% of Al, and 0.01W0.08% and C%×3W(C%×8+0.02)% of Nb, is hot-rolled with a total reduction ratio of at least 90% and a rolling speed for finish rolling of at least 40m/min. Then, it is wound up at a temperature of not lower than 600°C to obtain a hot-rolled coil, which is cold rolled to a final thickness to obtain the cold- rolled steel strip. The cold-rolled steel strip is soaked at 700W900°C for 10secW 5min., then it is cooled at a cooling rate of not less than 30°C/sec and continuously hot-dip coated with Zn.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7317880A JPS56169760A (en) | 1980-05-31 | 1980-05-31 | Nonaging high-tension hot-dip zn-coated steel strip excellent in press moldability and method for producing the same |
| US06/328,578 US4473414A (en) | 1980-03-31 | 1981-03-30 | High tensile strength cold rolled steel sheets and high tensile strength hot-dip galvanized steel sheets |
| PCT/JP1981/000068 WO1981002900A1 (en) | 1980-03-31 | 1981-03-30 | High-tensile,cold-rolled steel plate with excellent formability and process for its production,as well as high-tensile,galvanized steel plate with excellent formability,and process for its produciton |
| AU69251/81A AU531754B2 (en) | 1980-03-31 | 1981-03-30 | High-tensile,cold-rolled steel plate and high tensile, galvanized steel plate both with excellent formability, and process for its production |
| DE8181900756T DE3164521D1 (en) | 1980-03-31 | 1981-03-30 | High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production |
| EP81900756A EP0048761B1 (en) | 1980-03-31 | 1981-03-30 | High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production |
| US06/627,839 US4544419A (en) | 1980-03-31 | 1984-07-05 | Method for producing high tensile strength cold rolled steel sheets having excellent formability and high tensile strength hot-dip galvanized steel sheets having excellent formability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7317880A JPS56169760A (en) | 1980-05-31 | 1980-05-31 | Nonaging high-tension hot-dip zn-coated steel strip excellent in press moldability and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56169760A true JPS56169760A (en) | 1981-12-26 |
| JPS6114225B2 JPS6114225B2 (en) | 1986-04-17 |
Family
ID=13510620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7317880A Granted JPS56169760A (en) | 1980-03-31 | 1980-05-31 | Nonaging high-tension hot-dip zn-coated steel strip excellent in press moldability and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56169760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11473620B2 (en) | 2018-08-23 | 2022-10-18 | Nsk Ltd. | Rolling bearing precompression method, bearing precompression device, bearing assembly, machine, and vehicle |
-
1980
- 1980-05-31 JP JP7317880A patent/JPS56169760A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11473620B2 (en) | 2018-08-23 | 2022-10-18 | Nsk Ltd. | Rolling bearing precompression method, bearing precompression device, bearing assembly, machine, and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114225B2 (en) | 1986-04-17 |
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