JPS5545579A - Hot scarfing method of hot billet - Google Patents
Hot scarfing method of hot billetInfo
- Publication number
- JPS5545579A JPS5545579A JP11945478A JP11945478A JPS5545579A JP S5545579 A JPS5545579 A JP S5545579A JP 11945478 A JP11945478 A JP 11945478A JP 11945478 A JP11945478 A JP 11945478A JP S5545579 A JPS5545579 A JP S5545579A
- Authority
- JP
- Japan
- Prior art keywords
- gas pressure
- hot
- scarfing
- sides
- degree
- 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
- Metal Rolling (AREA)
Abstract
PURPOSE: To elevate the rolling yield rate by performing the work by the composition depth depending upon the degree of the surface flaw, in case of hot scarfing of the surface of the hot billet which has been subject to blooming rolling.
CONSTITUTION: In case of hot scarfing of the rough angle billet, the O2 gas pressure of the supply pipes 11, 21, 31 is made same as the gas pressure of the oxygen pipe 7 or 8 for the upper face or the lower face scarfing, and also it is made the setting pressure as 1/2 and 1/3 of this gas pressure, by adjusting the regulating valves 12, 22, 32 depending upon the degree of the surface defect generation state on both sides to the upper and lower faces. And the suitable gas pressure supply pipe among the supply pipes of O2 gas pressure consisting of different stages is selected depending upon the flaw state on the sides. In order to perform the aforesaid selection, the electromagnetic valves 14, 24, 34 of the O2 gas supply pipes are changed in advance by the electrical circuit constitution, based upon checking result of defect generation at the part of steel ingot. Accordingly, for instance, in case the scarfing is carried out by turning ON the valve 24 only and turning OFF the valves 14 and 34, and the defect degree on both the sides is varied, it is changed to other suitable supply pipe.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11945478A JPS5545579A (en) | 1978-09-27 | 1978-09-27 | Hot scarfing method of hot billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11945478A JPS5545579A (en) | 1978-09-27 | 1978-09-27 | Hot scarfing method of hot billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5545579A true JPS5545579A (en) | 1980-03-31 |
| JPS5717631B2 JPS5717631B2 (en) | 1982-04-12 |
Family
ID=14761770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11945478A Granted JPS5545579A (en) | 1978-09-27 | 1978-09-27 | Hot scarfing method of hot billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5545579A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338316U (en) * | 1989-08-25 | 1991-04-12 | ||
| CN112313352B (en) | 2018-06-29 | 2023-06-27 | 东洋钢钣株式会社 | Hot-rolled steel sheet, high-strength cold-rolled steel sheet, and method for producing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023333U (en) * | 1973-06-28 | 1975-03-15 | ||
| JPS5241741A (en) * | 1975-09-25 | 1977-03-31 | Bosch Gmbh Robert | Ignition apparatus for internal combustion engine |
-
1978
- 1978-09-27 JP JP11945478A patent/JPS5545579A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023333U (en) * | 1973-06-28 | 1975-03-15 | ||
| JPS5241741A (en) * | 1975-09-25 | 1977-03-31 | Bosch Gmbh Robert | Ignition apparatus for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5717631B2 (en) | 1982-04-12 |
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