JPS5739001A - Reducing method for crop in blooming process - Google Patents
Reducing method for crop in blooming processInfo
- Publication number
- JPS5739001A JPS5739001A JP11511680A JP11511680A JPS5739001A JP S5739001 A JPS5739001 A JP S5739001A JP 11511680 A JP11511680 A JP 11511680A JP 11511680 A JP11511680 A JP 11511680A JP S5739001 A JPS5739001 A JP S5739001A
- Authority
- JP
- Japan
- Prior art keywords
- ingot
- thickness
- recess
- reduce
- rolled
- 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
- 238000000034 method Methods 0.000 title abstract 5
- 238000005096 rolling process Methods 0.000 abstract 3
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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To reduce the amount of crops generated at the front and rear ends of the top and bottom of an ingot, and to improve the yield of the blooming process, by forming a recess at each of the top and bottom of a material to be rolled at an early stage of a rolling process, and by rolling the unrolled middle part so as to reduce its thickness to a size equal to the thickness of this recess. CONSTITUTION:An initial pass of a rolling process for an ingot 2 is carried out by a horizontal roll stand so as to reduce the thichness, and a recess 8 with 400-590mm. lingitudinal terminal end thickness is formed at the front and rear ends of the top and bottom of the ingot 2 by reducing the thichness at a strength. The unrolled middle part 10 is then rolled to reduce its thickness to a size approximately equal to the thickness of the recess 8. The ingot 2 is then rolled to a prescribed size by a vertical roll stand and horizontal roll stand. By the present method, the generation of an overlap at the font and rear ends of the ingot is restricted so that the blooming process can be performed with a high yield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11511680A JPS5739001A (en) | 1980-08-20 | 1980-08-20 | Reducing method for crop in blooming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11511680A JPS5739001A (en) | 1980-08-20 | 1980-08-20 | Reducing method for crop in blooming process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5739001A true JPS5739001A (en) | 1982-03-04 |
Family
ID=14654634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11511680A Pending JPS5739001A (en) | 1980-08-20 | 1980-08-20 | Reducing method for crop in blooming process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739001A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445153A1 (en) | 1983-12-19 | 1985-06-27 | Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto | NON-REDUCABLE DIELECTRIC CERAMIC MASS |
| JPS622408A (en) * | 1985-06-27 | 1987-01-08 | 京セラ株式会社 | Non-reducing dielectric ceramic composition |
| JPS62214802A (en) * | 1986-03-14 | 1987-09-21 | Nippon Steel Corp | Blooming method for circular columnar titanium ingot |
| JPS62282711A (en) * | 1986-04-30 | 1987-12-08 | Nippon Kokan Kk <Nkk> | Blooming method for ingot for slab |
-
1980
- 1980-08-20 JP JP11511680A patent/JPS5739001A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3445153A1 (en) | 1983-12-19 | 1985-06-27 | Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto | NON-REDUCABLE DIELECTRIC CERAMIC MASS |
| US4607018A (en) * | 1983-12-19 | 1986-08-19 | Murata Manufacturing Co., Ltd. | Non-reducible temperature compensation dielectric ceramic composition |
| JPS622408A (en) * | 1985-06-27 | 1987-01-08 | 京セラ株式会社 | Non-reducing dielectric ceramic composition |
| JPS62214802A (en) * | 1986-03-14 | 1987-09-21 | Nippon Steel Corp | Blooming method for circular columnar titanium ingot |
| JPS62282711A (en) * | 1986-04-30 | 1987-12-08 | Nippon Kokan Kk <Nkk> | Blooming method for ingot for slab |
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