JPS56158201A - Rolling method for steel ingot - Google Patents
Rolling method for steel ingotInfo
- Publication number
- JPS56158201A JPS56158201A JP5867480A JP5867480A JPS56158201A JP S56158201 A JPS56158201 A JP S56158201A JP 5867480 A JP5867480 A JP 5867480A JP 5867480 A JP5867480 A JP 5867480A JP S56158201 A JPS56158201 A JP S56158201A
- Authority
- JP
- Japan
- Prior art keywords
- rolling pass
- ingot
- pass
- longitudinal
- broadside
- 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
- 238000005096 rolling process Methods 0.000 title abstract 12
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- 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, and to improve the yield, by carrying out a step-forming rolling pass before a broadside rolling pass. CONSTITUTION:A skew broadside rolling is pass applied to a steel ingot 5 with a rolling reduction on the bottom 7 side larger than that on the top 6 side. Hereby, the breadth of the bottom 7 becomes larger than that of the top 6. During this skew broadside rolling pass, an upper work roll is inclined correspondingly to the variation in the thickness of the ingot. A longitudinal rolling pass is then applied to the ingot in order to elongate it to a certain length. Although the thickness becomes uniform as a result of said longitudinal rolling pass, the breadth of the bottom is kept as larger than that of the top as it is before the longitudinal rolling pass. A step-forming rolling pass is then applied to the ingot in the longitudinal direction so as to provide the ingot with a three-staged thickness distribution. Then, a broadside rolling pass is applied to the ingot which is thereby formed into an almost rectangular plate. Finally, a longitudinal rolling pass is applied to the plate which is hereby formed into a product having a required thickness and length; thereby, a rectangular plate 8 is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5867480A JPS56158201A (en) | 1980-05-06 | 1980-05-06 | Rolling method for steel ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5867480A JPS56158201A (en) | 1980-05-06 | 1980-05-06 | Rolling method for steel ingot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56158201A true JPS56158201A (en) | 1981-12-05 |
Family
ID=13091121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5867480A Pending JPS56158201A (en) | 1980-05-06 | 1980-05-06 | Rolling method for steel ingot |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56158201A (en) |
-
1980
- 1980-05-06 JP JP5867480A patent/JPS56158201A/en active Pending
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