JPS5656702A - Blooming method for rough shaped steel billet - Google Patents
Blooming method for rough shaped steel billetInfo
- Publication number
- JPS5656702A JPS5656702A JP13210079A JP13210079A JPS5656702A JP S5656702 A JPS5656702 A JP S5656702A JP 13210079 A JP13210079 A JP 13210079A JP 13210079 A JP13210079 A JP 13210079A JP S5656702 A JPS5656702 A JP S5656702A
- Authority
- JP
- Japan
- Prior art keywords
- calibers
- flange
- shaped steel
- billet
- steel billet
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To prevent the generation of the surface defect in the flange, by inserting the flat rolling pass for edging only the tip of the flange on the way of the rolling pass using the forming caliber, at the blooming method for obtaining the rough shaped steel billet possessing the web and the flange. CONSTITUTION:The rolling rolls 20, 22 are provided with the conventional forming calibers 20-1, 22-1 and the bull-head calibers 20-2, 22-2 possessing the flat part. The intermediate billet 24 is prepared by the repeated rolling works into almost desired shape with the flange whose blowholes are mostly unsqueezed; this intermediate billet 24 is subjected to the bull-head calibers 20-2, 22-2, in order to edging only the flange tip 24a with the flat part of the calibers by the draft percentage 5-15% per one pass. Next, the billet is subjected to the forming calibers 20-1, 20-2 to finish into the rough shaped steel billet 26 of the specified sectional shape. Hereby, the surface shape and the interior condition of the rough shaped steel billet are improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13210079A JPS5656702A (en) | 1979-10-12 | 1979-10-12 | Blooming method for rough shaped steel billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13210079A JPS5656702A (en) | 1979-10-12 | 1979-10-12 | Blooming method for rough shaped steel billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5656702A true JPS5656702A (en) | 1981-05-18 |
Family
ID=15073458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13210079A Pending JPS5656702A (en) | 1979-10-12 | 1979-10-12 | Blooming method for rough shaped steel billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5656702A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014220A (en) * | 2021-12-07 | 2022-02-08 | 唐山盛航环保机车制造有限公司 | F steel for forklift gantry and rolling process |
-
1979
- 1979-10-12 JP JP13210079A patent/JPS5656702A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014220A (en) * | 2021-12-07 | 2022-02-08 | 唐山盛航环保机车制造有限公司 | F steel for forklift gantry and rolling process |
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