JPS555161A - Production of sleeve for variable crown roll - Google Patents
Production of sleeve for variable crown rollInfo
- Publication number
- JPS555161A JPS555161A JP7771978A JP7771978A JPS555161A JP S555161 A JPS555161 A JP S555161A JP 7771978 A JP7771978 A JP 7771978A JP 7771978 A JP7771978 A JP 7771978A JP S555161 A JPS555161 A JP S555161A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- sleeve
- under
- casting
- poured
- 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
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
PURPOSE:To improve the strength of the sleeve by using material of high hardness as an outer layer and rigid material as an inner layer and integrally molding these through centrifugal casting. CONSTITUTION:A centrifugal casting method is employed as a casting means of the sleeve. The outer layer of the sleeve is required to have abrasion resistance and this necessitates material of high hardness and therefore molten steel of a high carbon amount (C; 1.3 to 2.0%, Si; 0.3 to 1.0%, Mn; 0.3 to 1.0%, Ni; 0.5 to 2.0%, Cr; 1.0 to 3.0%, Mo; 0.3 to 1.0%) is poured in casting molds first to mold the first layer 21. Immediate before the inner surface hardens, the molten steel of a low carbon amount (C; 0.6 to 1.0%, Si; 0.3 to 1.0%, Mn; 0.3 to 1.0%, Ni; 0.5% or under, Cr; 0.5% or under, Mo; 0.5% or under) for forming the second layer 22 is poured in the casting molds. A mixed layer 23 is thinly formed at the intermediate of both to connect the inner and outer layers to an integral unit. The blank after having solidified is subjected to quenching and tempering and is further annular recess 3 is formed on the inner side face of the inner layer by machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7771978A JPS555161A (en) | 1978-06-27 | 1978-06-27 | Production of sleeve for variable crown roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7771978A JPS555161A (en) | 1978-06-27 | 1978-06-27 | Production of sleeve for variable crown roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS555161A true JPS555161A (en) | 1980-01-16 |
Family
ID=13641687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7771978A Pending JPS555161A (en) | 1978-06-27 | 1978-06-27 | Production of sleeve for variable crown roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS555161A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451842A (en) * | 2010-10-29 | 2012-05-16 | 宝山钢铁股份有限公司 | Tension descaling roll with variable convexities |
| CN103357737A (en) * | 2013-07-05 | 2013-10-23 | 苏州有色金属研究院有限公司 | Metal strip pure extension straightening used convexity variable tension roller system |
-
1978
- 1978-06-27 JP JP7771978A patent/JPS555161A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451842A (en) * | 2010-10-29 | 2012-05-16 | 宝山钢铁股份有限公司 | Tension descaling roll with variable convexities |
| CN103357737A (en) * | 2013-07-05 | 2013-10-23 | 苏州有色金属研究院有限公司 | Metal strip pure extension straightening used convexity variable tension roller system |
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