JPS5772718A - Hot rolling method for steel - Google Patents
Hot rolling method for steelInfo
- Publication number
- JPS5772718A JPS5772718A JP14864380A JP14864380A JPS5772718A JP S5772718 A JPS5772718 A JP S5772718A JP 14864380 A JP14864380 A JP 14864380A JP 14864380 A JP14864380 A JP 14864380A JP S5772718 A JPS5772718 A JP S5772718A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- hot rolling
- rolled
- heated
- preventing effect
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To prevent the occurrence of surface flaws by heating steel to a specified temperature range to roll it roughly and reheating the surface immediately before intermediate rolling and thereby making the inside of the steel fine texture. CONSTITUTION:In hot rolling steel, the steel is heated to Ac3 transformation point or more and <=1,050 deg.C and rolled by a rougher 2. Next, the surface of the steel is reheated to 900-1,200 deg.C by a high frequency induction heater 5, and rolled through an intermediate rolling mill 3 and a finishing mill 4. At this time, if reheating temperature is <=900 deg.C, surface flaw preventing effect is small, and to flaw preventing effect can be obtained even if the steel is heated to >=1,200 deg.C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14864380A JPS5772718A (en) | 1980-10-22 | 1980-10-22 | Hot rolling method for steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14864380A JPS5772718A (en) | 1980-10-22 | 1980-10-22 | Hot rolling method for steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5772718A true JPS5772718A (en) | 1982-05-07 |
Family
ID=15457376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14864380A Pending JPS5772718A (en) | 1980-10-22 | 1980-10-22 | Hot rolling method for steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5772718A (en) |
-
1980
- 1980-10-22 JP JP14864380A patent/JPS5772718A/en active Pending
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