CN111974805A - High-chromium steel forged steel combined vertical roll of hot strip roughing mill - Google Patents
High-chromium steel forged steel combined vertical roll of hot strip roughing mill Download PDFInfo
- Publication number
- CN111974805A CN111974805A CN201910422350.XA CN201910422350A CN111974805A CN 111974805 A CN111974805 A CN 111974805A CN 201910422350 A CN201910422350 A CN 201910422350A CN 111974805 A CN111974805 A CN 111974805A
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- China
- Prior art keywords
- steel
- mandrel
- vertical roll
- combined vertical
- chromium steel
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- 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
- B21B27/021—Rolls for sheets or strips
-
- 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
- B21B27/027—Vertical rolls
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- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a high-chromium steel forged steel combined vertical roll of a hot strip roughing mill, which comprises a mandrel, wherein a shaft sleeve is arranged outside the mandrel, and the mandrel and the shaft sleeve are combined into a whole in a thermal expansion mode; the mandrel is made of forged steel, and the shaft sleeve is made of high-chromium steel. The invention has the advantages that: the high-chromium steel combined vertical roll prepared by the invention has high wear resistance, the roll changing period is prolonged, the more complicated vertical roll changing times are reduced, and the steel rolling production efficiency is improved; the high-chromium steel combined vertical roll prepared by the invention obviously improves the edge quality of the strip steel, reduces the trimming amount of downstream users of the hot-rolled strip steel during processing and improves the yield.
Description
Technical Field
The invention relates to the field of metallurgical machinery, in particular to a vertical roller structure.
Background
The vertical rolls of the rough rolling stand of the hot strip mill are usually produced by integral casting, and are generally made of graphite cast steel, semisteel or the like. The vertical roll of the plate and strip steel hot rolling mill is used for controlling the width of strip steel, ensuring the edge quality of the strip steel, removing oxide scales on the side surface of a blank and the like.
With the rapid development of the strip rolling mill technology, the rolling yield is increased rapidly. This requires the roll to be used for a longer period in the machine, but the roll is difficult to adapt to the development of the product variety and specification of the current hot rolling mill, and brings a series of influences on the product quality. The vertical rolls from the rolling mill have serious surface cracks, pits and beading, and the burr rate of the edge of the strip steel is increased.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a combined vertical roller which comprises a roller sleeve and a mandrel, wherein the roller sleeve is made of high-chromium steel; the mandrel is made of forged steel. The specific technical scheme is as follows:
a high-chromium steel forged steel combined vertical roll of a hot strip roughing mill is characterized in that: the combined vertical roller comprises a mandrel, a shaft sleeve is arranged on the outer side of the mandrel, and the mandrel and the shaft sleeve are combined into a whole in a thermal expansion (namely, interference fit after heating); the mandrel is made of forged steel, and the shaft sleeve is made of high-chromium steel.
After the roller core and the roller sleeve are respectively manufactured, the roller sleeve is heated to 260 ℃ and then assembled with the roller core.
The material of the mandrel is 9Cr3 Mo.
The material of the roller sleeve is Cr12Mo2 Ni.
The invention has the advantages that: the high-chromium steel combined vertical roll prepared by the invention has high wear resistance, the roll changing period is prolonged, the more complicated vertical roll changing times are reduced, and the steel rolling production efficiency is improved; the high-chromium steel combined vertical roll prepared by the invention obviously improves the edge quality of the strip steel, improves the width precision of the strip steel, reduces the trimming amount of downstream users of the hot-rolled strip steel during processing and improves the yield.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention is described in detail with the attached drawings, the combined vertical roller comprises a mandrel 1, a shaft sleeve 2 is arranged outside the mandrel 1, and the mandrel and the shaft sleeve are combined into a whole in a thermal expansion (interference fit after heating); the mandrel is made of forged steel, and the shaft sleeve is made of high-chromium steel.
After the roller core and the roller sleeve are respectively manufactured, the roller sleeve is heated to 260 ℃ and then assembled with the roller core.
The material of the mandrel is 9Cr3Mo
The material of the roller sleeve is Cr12Mo2 Ni.
Claims (4)
1. A high-chromium steel forged steel combined vertical roll of a hot strip roughing mill is characterized in that: the combined vertical roller comprises a mandrel, a shaft sleeve is arranged on the outer side of the mandrel, and the mandrel and the shaft sleeve are combined into a whole in a thermal expansion mode; the mandrel is made of forged steel, and the shaft sleeve is made of high-chromium steel.
2. The combined vertical roll of hot strip roughing mill high chromium steel forged steel according to claim 1, characterized in that: after the roller core and the roller sleeve are respectively manufactured, the roller sleeve is heated to 260 ℃ and then assembled with the roller core.
3. The combined vertical roll of hot strip roughing mill high chromium steel forged steel according to claim 1, characterized in that: the material of the mandrel is 9Cr3 Mo.
4. The combined vertical roll of hot strip roughing mill high chromium steel forged steel according to claim 1, characterized in that: the material of the roller sleeve is Cr12Mo2 Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910422350.XA CN111974805A (en) | 2019-05-21 | 2019-05-21 | High-chromium steel forged steel combined vertical roll of hot strip roughing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910422350.XA CN111974805A (en) | 2019-05-21 | 2019-05-21 | High-chromium steel forged steel combined vertical roll of hot strip roughing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111974805A true CN111974805A (en) | 2020-11-24 |
Family
ID=73437143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910422350.XA Pending CN111974805A (en) | 2019-05-21 | 2019-05-21 | High-chromium steel forged steel combined vertical roll of hot strip roughing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111974805A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412105A (en) * | 2008-11-28 | 2009-04-22 | 北京工业大学 | Method for producing wear-resistant composite roller |
| CN105127202A (en) * | 2015-08-28 | 2015-12-09 | 中钢集团邢台机械轧辊有限公司 | Combined vertical roll for 1450 hot-strip mill |
| CN105312540A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Technique and device for manufacturing composite roller with recyclable roller core |
| CN205551076U (en) * | 2016-01-27 | 2016-09-07 | 中钢集团邢台机械轧辊有限公司 | Split type hot strip mill makes up edger roll |
| CN205949478U (en) * | 2016-08-31 | 2017-02-15 | 唐山亿联盛轧辊有限公司 | High -speed steel composite roll |
| CN106694559A (en) * | 2016-12-30 | 2017-05-24 | 中钢集团邢台机械轧辊有限公司 | Key-connection combined vertical roll |
| CN106734213A (en) * | 2016-12-29 | 2017-05-31 | 中钢集团邢台机械轧辊有限公司 | A kind of composite (back-up) roll of battery pole piece rolling mill |
| CN206356365U (en) * | 2016-12-29 | 2017-07-28 | 中钢集团邢台机械轧辊有限公司 | A kind of location structure for combining vertical rolls set and roll shaft |
| CN108855377A (en) * | 2018-07-03 | 2018-11-23 | 上海电气上重碾磨特装设备有限公司 | A kind of coal pulverizer mill roll sleeve and preparation method thereof |
-
2019
- 2019-05-21 CN CN201910422350.XA patent/CN111974805A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101412105A (en) * | 2008-11-28 | 2009-04-22 | 北京工业大学 | Method for producing wear-resistant composite roller |
| CN105127202A (en) * | 2015-08-28 | 2015-12-09 | 中钢集团邢台机械轧辊有限公司 | Combined vertical roll for 1450 hot-strip mill |
| CN105312540A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Technique and device for manufacturing composite roller with recyclable roller core |
| CN205551076U (en) * | 2016-01-27 | 2016-09-07 | 中钢集团邢台机械轧辊有限公司 | Split type hot strip mill makes up edger roll |
| CN205949478U (en) * | 2016-08-31 | 2017-02-15 | 唐山亿联盛轧辊有限公司 | High -speed steel composite roll |
| CN106734213A (en) * | 2016-12-29 | 2017-05-31 | 中钢集团邢台机械轧辊有限公司 | A kind of composite (back-up) roll of battery pole piece rolling mill |
| CN206356365U (en) * | 2016-12-29 | 2017-07-28 | 中钢集团邢台机械轧辊有限公司 | A kind of location structure for combining vertical rolls set and roll shaft |
| CN106694559A (en) * | 2016-12-30 | 2017-05-24 | 中钢集团邢台机械轧辊有限公司 | Key-connection combined vertical roll |
| CN108855377A (en) * | 2018-07-03 | 2018-11-23 | 上海电气上重碾磨特装设备有限公司 | A kind of coal pulverizer mill roll sleeve and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 中国重型机械工业协会等: "《重型机械标准 第5卷》", 31 March 2008, 云南科技出版社 * |
| 何光鉴: "《有色金属塑性加工设备》", 30 September 1985, 科学技术文献出版社重庆分社 * |
| 何杰等: "高铬铸钢组合立辊在热轧板带轧机中的应用", 《上海金属》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
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| RJ01 | Rejection of invention patent application after publication |