JPS5747503A - Rolling method with different circumferential roll speeds - Google Patents
Rolling method with different circumferential roll speedsInfo
- Publication number
- JPS5747503A JPS5747503A JP12332080A JP12332080A JPS5747503A JP S5747503 A JPS5747503 A JP S5747503A JP 12332080 A JP12332080 A JP 12332080A JP 12332080 A JP12332080 A JP 12332080A JP S5747503 A JPS5747503 A JP S5747503A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- work
- friction factor
- circumferential
- speeds
- 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
Abstract
PURPOSE: To make a PV rolling process having an excellent descaling effect practical with a reduced tension, by making the friction factor on a high speed roll side larger than that on a low speed roll side, when a strip is rolled with difference circumferential roll speeds.
CONSTITUTION: When a material 18 is rolled with upper and lower work rolls 10, 12 rotated at different circumferential speeds, the material 18 just being fed to the rolling rolls 10, 12 is pushed down to bend by a deflector roll, etc.; hereupon, the contact angle θ1 of the upper high speed roll 10 is made larger than the contact angle θ2 of the lower low speed roll 12. The friction factor μ1 between the material 18 and the upper work roll 10 becomes larger than the friction factor μ2 between the material 18 and the lower work roll 12, and the difference between forward tension σf and the back tension σb acting on the material 18 becomes small; hereby, the neutral points P1', P2', wherein the speed of the material 18 coincides with the circumferential speed of the work roll, are respectively shifted to the run-out side and feed-in side end points P1, P2 so that the PV rollig work is smoothly continued.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12332080A JPS5747503A (en) | 1980-09-05 | 1980-09-05 | Rolling method with different circumferential roll speeds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12332080A JPS5747503A (en) | 1980-09-05 | 1980-09-05 | Rolling method with different circumferential roll speeds |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5747503A true JPS5747503A (en) | 1982-03-18 |
JPS638842B2 JPS638842B2 (en) | 1988-02-24 |
Family
ID=14857630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12332080A Granted JPS5747503A (en) | 1980-09-05 | 1980-09-05 | Rolling method with different circumferential roll speeds |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5747503A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58202903A (en) * | 1982-05-21 | 1983-11-26 | Nippon Steel Corp | Rolling method of strip |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54149352A (en) * | 1978-05-17 | 1979-11-22 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method by changing friction forces of upper and lower rolls |
JPS56151102A (en) * | 1980-04-24 | 1981-11-24 | Nippon Steel Corp | Rolling method for strip |
JPS5736001A (en) * | 1980-08-12 | 1982-02-26 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for lubricating different roll speed rolling work |
-
1980
- 1980-09-05 JP JP12332080A patent/JPS5747503A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54149352A (en) * | 1978-05-17 | 1979-11-22 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling method by changing friction forces of upper and lower rolls |
JPS56151102A (en) * | 1980-04-24 | 1981-11-24 | Nippon Steel Corp | Rolling method for strip |
JPS5736001A (en) * | 1980-08-12 | 1982-02-26 | Ishikawajima Harima Heavy Ind Co Ltd | Method and apparatus for lubricating different roll speed rolling work |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58202903A (en) * | 1982-05-21 | 1983-11-26 | Nippon Steel Corp | Rolling method of strip |
JPH0253122B2 (en) * | 1982-05-21 | 1990-11-15 | Nippon Steel Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS638842B2 (en) | 1988-02-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53112249A (en) | Rolling mill | |
JPS53106367A (en) | Continuous rolling mill | |
JPS53112253A (en) | Controlling method for interstand tension in continuous rolling mill | |
JPS5747503A (en) | Rolling method with different circumferential roll speeds | |
JPS55139102A (en) | Rolling method for strip | |
JPS5534688A (en) | Descaling method for hot rolled steel strip | |
JPS56158205A (en) | Asymmetrical rolling method | |
JPS54133455A (en) | Method and apparatus for rolling | |
JPS571504A (en) | Rolling method | |
JPS56151102A (en) | Rolling method for strip | |
JPS56111503A (en) | Rolling method for strip | |
EP0111865A3 (en) | A different circumferential speed rolling mill | |
JPS55106606A (en) | Rolling mill and rolling method | |
JPS5668523A (en) | Pointed part forming method of blank material for drawing | |
JPS56131002A (en) | Changing method for roll crown | |
JPS5217291A (en) | Process and equipment for cutting the work roll of a roller | |
JPS5699003A (en) | Rolling method for strip wrapped around roll | |
JPS56158204A (en) | Asymmetrical rolling method for strip | |
JPS5399059A (en) | Cold-rolling method for steel sheet with few edge wave | |
JPS53144975A (en) | Plastic sheet rolling | |
JPS54112360A (en) | Manufacture of heat transmitting tube | |
JPS5516769A (en) | Manufacturing steel sheet of high shaping property for drawing and squeezing | |
JPS5775206A (en) | Rolling method with rolls having different diameters | |
JPS53118257A (en) | Method of preventing occurrence of surface flaw in continuous steel-plate treating line | |
JPS5630011A (en) | Rolling method for metallic strip |