JPS57100803A - Production of rough shape ingot for large size shape steel - Google Patents
Production of rough shape ingot for large size shape steelInfo
- Publication number
- JPS57100803A JPS57100803A JP17792380A JP17792380A JPS57100803A JP S57100803 A JPS57100803 A JP S57100803A JP 17792380 A JP17792380 A JP 17792380A JP 17792380 A JP17792380 A JP 17792380A JP S57100803 A JPS57100803 A JP S57100803A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- web
- flange
- rolling
- fishtails
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To make fishtails small and to improve yield by interposing the rolling in a guide pass restraining the inner parts of flange roots and giving rolling effect upon a web in the middle of the broadside screw-down in a box groove. CONSTITUTION:A guide pass 20 has web rolling faces 20A, and the flange root spacig F formed by the point M of intersection of the horizontal extension line of the face 20A and the extension line of flange inner walls 20B, and the point N of intersection with the extension line of flange outer walls 20C is so specified that the root parts 20D of the walls 20B restrain the inner parts of the wall build-up parts 7 of a material 21 to be rolled. If the rolling with this pass 20 is interposed in the middle of the broadside screw-down with a box groove, the formation of the web part 20A is also made possible, thus the nonuniformity in the deformation of the parts corresponding to the web and the parts corresponding to the flanges is eased, fishtails are made small, and the cracking in the deepest parts of the fishtails is suppressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17792380A JPS6021801B2 (en) | 1980-12-16 | 1980-12-16 | Method for producing rough shaped steel slabs for large shaped steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17792380A JPS6021801B2 (en) | 1980-12-16 | 1980-12-16 | Method for producing rough shaped steel slabs for large shaped steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57100803A true JPS57100803A (en) | 1982-06-23 |
| JPS6021801B2 JPS6021801B2 (en) | 1985-05-29 |
Family
ID=16039422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17792380A Expired JPS6021801B2 (en) | 1980-12-16 | 1980-12-16 | Method for producing rough shaped steel slabs for large shaped steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021801B2 (en) |
-
1980
- 1980-12-16 JP JP17792380A patent/JPS6021801B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6021801B2 (en) | 1985-05-29 |
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