JPS6462240A - Production of rough billet by forging - Google Patents
Production of rough billet by forgingInfo
- Publication number
- JPS6462240A JPS6462240A JP21798887A JP21798887A JPS6462240A JP S6462240 A JPS6462240 A JP S6462240A JP 21798887 A JP21798887 A JP 21798887A JP 21798887 A JP21798887 A JP 21798887A JP S6462240 A JPS6462240 A JP S6462240A
- Authority
- JP
- Japan
- Prior art keywords
- forging
- steel
- steel stock
- manufacturing
- tool
- 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
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
PURPOSE:To manufacture a rough billet with good material yield and high efficiency by applying forging on the whole length in the longitudinal direction after forming two recessed parts in the longitudinal direction of a steel stock by the tool of circular arcuated section in advance, in case of manufacturing the rough billet for rolling a bar steel by forging from the steel stock. CONSTITUTION:In case of manufacturing an H-shape steel stock, the thick billet made in almost H-shape in advance is subjected to hot rolling after manufacturing it by forging to manufacture the bar steel of an H-shape steel, etc. In case of manufacturing the rough billet of as that in this H-shape by forging of a steel stock, a so-called crop 6 is formed at the initial forging time and this crop part becomes of the yield reduction of the raw material. In order to prevent this, a rolling reduction is executed in the longitudinal direction of a steel stock 4 by the tool 3 having a circular arcuate section so as to form the recessed part 5 at two places at both sides for the sectional center of the raw material steel stock 4. The rough billet having no generation of the crop 6 is obtd. with good material yield by forging by using the tool having such a non-steady part that the rolling reduction is gradually reduced in the compression and width directions compared with an ordinary tool steady part thereafter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21798887A JPS6462240A (en) | 1987-09-02 | 1987-09-02 | Production of rough billet by forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21798887A JPS6462240A (en) | 1987-09-02 | 1987-09-02 | Production of rough billet by forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6462240A true JPS6462240A (en) | 1989-03-08 |
Family
ID=16712860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21798887A Pending JPS6462240A (en) | 1987-09-02 | 1987-09-02 | Production of rough billet by forging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6462240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245601A (en) * | 1988-11-30 | 1993-09-14 | Deutsche Thomson-Brandt Gmbh | Optical recorder and/or player including cleaning means |
-
1987
- 1987-09-02 JP JP21798887A patent/JPS6462240A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245601A (en) * | 1988-11-30 | 1993-09-14 | Deutsche Thomson-Brandt Gmbh | Optical recorder and/or player including cleaning means |
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