JPS57177802A - Production of h-beam - Google Patents
Production of h-beamInfo
- Publication number
- JPS57177802A JPS57177802A JP6376381A JP6376381A JPS57177802A JP S57177802 A JPS57177802 A JP S57177802A JP 6376381 A JP6376381 A JP 6376381A JP 6376381 A JP6376381 A JP 6376381A JP S57177802 A JPS57177802 A JP S57177802A
- Authority
- JP
- Japan
- Prior art keywords
- leading
- rolled
- web
- flange
- 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.)
- Pending
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
- B21B1/0883—H- or I-sections using forging or pressing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To reduce the shape defects at the front and leading ends of an H- beam and to improve yield in hot rolling of the H-beam by pressing down the leading and trailing ends of the flange and web parts of a material to be rolled on the outlet side of a breakdown rolling mill. CONSTITUTION:In the production of an H-beam, the leading end part of a material 8 to be rolled out from a breakdown rolling mill is rolled to a prescribed plate thickness by using horizontal dies 6 and applying press-down to its web, after which flange parts are deformed by using vertical dies 7. The trailing end of the material 8 is also pressed down by the similar procedures, whereby the leading and trailing ends of the flange and web parts are rolled roughly to finish sizes. Thereby, the flanges and web are kept free from receiving pressing down in the rough universal rolling stage of the next step and the production of crops at the leading and trailing ends is suppressed. In ordinary universal rolling, the yield of products is improved without deficiency of edge metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6376381A JPS57177802A (en) | 1981-04-27 | 1981-04-27 | Production of h-beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6376381A JPS57177802A (en) | 1981-04-27 | 1981-04-27 | Production of h-beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57177802A true JPS57177802A (en) | 1982-11-01 |
Family
ID=13238741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6376381A Pending JPS57177802A (en) | 1981-04-27 | 1981-04-27 | Production of h-beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57177802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327767A (en) * | 1992-04-22 | 1994-07-12 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Press working apparatus |
-
1981
- 1981-04-27 JP JP6376381A patent/JPS57177802A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327767A (en) * | 1992-04-22 | 1994-07-12 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Press working apparatus |
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