JPS5686601A - Reducing method for crop loss of blooming work - Google Patents
Reducing method for crop loss of blooming workInfo
- Publication number
- JPS5686601A JPS5686601A JP16381879A JP16381879A JPS5686601A JP S5686601 A JPS5686601 A JP S5686601A JP 16381879 A JP16381879 A JP 16381879A JP 16381879 A JP16381879 A JP 16381879A JP S5686601 A JPS5686601 A JP S5686601A
- Authority
- JP
- Japan
- Prior art keywords
- projection
- ingot
- rolling
- order
- side planes
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000005096 rolling process Methods 0.000 abstract 5
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 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
- B21B1/02—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 effectively reduce the crop loss of the blooming work to be carried out by the reversing mill, by applying the rolling roll to both of opposite side planes at either the top or the bottom of the steel ingot, in order to form the projection, and then, by rolling those two side planes. CONSTITUTION:The rolling rolls 8, 8, are applied to at least one pair of opposite side planes of at least one of top and bottom of the ingot 7, in order to form a projection 9 in a T-shape. Next, the rolling rolls 8, 8, are applied to the ingot in the same direction with a high draft percentage in order to eliminate the projection 9. Hereupon, the extension DELTAL of the projection 9 is desired to be about 200-300mm., by reason of preventing excessive rolling load. If the extension DELTAL is smaller than this range, the height DELTAH of the projection 9 tends to creep up toward the crop end 10, so that the effect of reducing the crop loss is declined. Besides, the height DELTAH of the projection 9 is most desired to fall in a range given by the formula. According to the present method, the overlap and the fishtail in directions of thickness and breadth of the ingot 7 can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16381879A JPS5854882B2 (en) | 1979-12-17 | 1979-12-17 | Method for reducing clotupulos in blooming rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16381879A JPS5854882B2 (en) | 1979-12-17 | 1979-12-17 | Method for reducing clotupulos in blooming rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5686601A true JPS5686601A (en) | 1981-07-14 |
| JPS5854882B2 JPS5854882B2 (en) | 1983-12-07 |
Family
ID=15781300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16381879A Expired JPS5854882B2 (en) | 1979-12-17 | 1979-12-17 | Method for reducing clotupulos in blooming rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854882B2 (en) |
-
1979
- 1979-12-17 JP JP16381879A patent/JPS5854882B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5854882B2 (en) | 1983-12-07 |
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