CN102703823B - High-speed steel for composite roll collar - Google Patents
High-speed steel for composite roll collar Download PDFInfo
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- CN102703823B CN102703823B CN201210020419.4A CN201210020419A CN102703823B CN 102703823 B CN102703823 B CN 102703823B CN 201210020419 A CN201210020419 A CN 201210020419A CN 102703823 B CN102703823 B CN 102703823B
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- Prior art keywords
- rapid steel
- composite roll
- collars
- roll
- weight
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 229910000997 High-speed steel Inorganic materials 0.000 title abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 229910052721 tungsten Inorganic materials 0.000 claims description 12
- 229910052748 manganese Inorganic materials 0.000 claims description 11
- 229910052758 niobium Inorganic materials 0.000 claims description 11
- 229910052720 vanadium Inorganic materials 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The invention discloses high-speed steel for a composite roll collar. The high-speed steel is characterized by consisting of the following chemical components in percentage by weight: 1.3-1.7% of C, 1.5-2.5% of V, 6.5-7.5% of Cr, 2.0-4.0% of Mo, 4.0-6.0% of W, 3.0-5.0% of Nb, 8.0-9.0% of Co, less than 1.0% of Si, less than 1.5% of Mn, less than 0.04% of P, less than 0.04% of S, 0.25-0.45% of Y, 0.3-0.5% of Ti, 0.15-0.25% of Mg, 0.15-0.25% of Te, 0.3-0.5% of B and the balance of Fe.
Description
Technical field
The present invention relates to ferrous metallurgy field, particularly a kind of composite roll collars rapid steel.
Background technology
Hot rolling is the important process process in Iron And Steel Industry, and hot roll is the key tool that hot rolling is produced, and must be able to bear quite strong power and hot effect.Except having good break resistance, surface also should have good wear-resisting, resistance toheat, and this is not only closely related because of the cost of roll and product, and directly determines the operating rate of hot-rolled product quality and hot rolls.Because the rolling that roller surface wearing and tearing cause is shut down midway; often cause very large financial loss; therefore; the research that improves hot roll surface abrasion resistance constantly draws attention; hot roll material and hot roll manufacturing process are constantly improved and develop; roll making technology is from common monoblock casting; develop into and rinse cast; centrifugal composite casting; to roll, by overall formula, change built-up type into, by collars and mandrel suit, formed, can improve roll neck intensity; mandrel is reusable, also can reduce roll cost.Wire rod mill and merchant bar mill collars are mainly used cast alloy iron collars and carbide roll ring at present, and cast alloy iron collars intensity is high, good toughness, but hardness is low, and red hardness is poor, and wear resistance is low.Carbide roll ring has the advantages such as the high and wear resistance of hardness is good, but fragility is large, in use, very easily peels off and embrittlement.Chinese patent literature CN1174764, has provided the ceramic metal roll-ring that a kind of wear resistance is good, but this collars must pass through Thermocompressed sintering and forming, complex manufacturing, and in collars, add nonmetallic ceramics, by the toughness of infringement collars, cause occurring embrittlement in collars use.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to provide a kind of composite roll collars rapid steel.In rapid steel of the present invention, add the microalloy elements such as Y, Ti, Mg, B and Te, thinning solidification structure, improves carbide morphology and distribution, improves rapid steel obdurability and thermal fatigue resistance, thereby extends the work-ing life of high-speed steel roll.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.3%～1.7%, V:1.5%～2.5%, Cr:6.5%～7.5%, Mo:2.0%～4.0%, W:4.0%～6.0%, Nb:3.0%～5.0%, Co:8.0%～9.0%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.25%～0.45%, Ti:0.3%～0.5%, Mg:0.15%～0.25%, Te:0.15%～0.25%, B:0.3%～0.5%, surplus is Fe.
Preferably, the chemical composition of this rapid steel is comprised of following component in per-cent (weight): C:1.4%～1.6%, V:1.8%～2.2%, Cr:6.8%～7.2%, Mo:2.5%～3.5%, W:4.5%～5.5%, Nb:3.5%～4.5%, Co:8.2%～8.8%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.30%～0.40%, Ti:0.35%～0.45%, Mg:0.18%～0.22%, Te:0.18%～0.22%, B:0.35%～0.45%, surplus is Fe.
Most preferably, the chemical composition of this rapid steel is comprised of following component in per-cent (weight): C:1.5%, V:2.0%, Cr:7.0%, Mo:3.0%, W:5.0%, Nb:4.0%, Co:8.5%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.35%, Ti:0.40%, Mg:0.20%, Te:0.20%, B:0.40%, surplus is Fe.
Composite roll collars of the present invention has following beneficial effect with rapid steel:
The present invention is optimized design by the composition to rapid steel, except readjusting the content of conventional carbide forming element V in rapid steel, Cr, Mo, W, Co etc., add wherein the microalloy elements such as Y, Ti, Mg, B and Te, refinement solidified structure, improved carbide morphology and distribution, improved high-speed steel roll intensity and toughness, particularly B element adds, its mechanical property is improved greatly, and its tensile strength reaches 1050MPa～1150MPa, and impelling strength reaches 17J/cm
2～20J/cm
2.In the collars metallographic structure that adopts rapid steel of the present invention to prepare, contain 16～20% high rigidity carbide, cause roll hardness high, reach 63～67HRC, wear resistance and red hardness are good.
Embodiment
Embodiment mono-
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.3%, V:2.5%, Cr:6.5%, Mo:4.0%, W:4.0%, Nb:5.0%, Co:8.0%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.45%, Ti:0.3%, Mg:0.25%, Te:0.15%, B:0.5%, surplus is Fe.
Embodiment bis-
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.7%, V:1.5%, Cr:7.5%, Mo:2.0%, W:6.0%, Nb:3.0%, Co:9.0%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.25%, Ti:0.5%, Mg:0.15%, Te:0.25%, B:0.3%, surplus is Fe.
Embodiment tri-
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.4%, V:2.2%, Cr:6.8%, Mo:3.5%, W:4.5%, Nb:4.5%, Co:8.2%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.40%, Ti:0.35%, Mg:0.22%, Te:0.18%, B:0.45%, surplus is Fe.
Embodiment tetra-
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.6%, V:1.8%, Cr:7.2%, Mo:2.5%, W:5.5%, Nb:3.5%, Co:8.8%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.30%, Ti:0.45%, Mg:0.18%, Te:0.22%, B:0.35%, surplus is Fe.
Embodiment five
A kind of composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.5%, V:2.0%, Cr:7.0%, Mo:3.0%, W:5.0%, Nb:4.0%, Co:8.5%, Si < 1.0%, Mn < 1.5%, P < 0.04%, S < 0.04%, Y:0.35%, Ti:0.4%, Mg:0.20%, Te:0.20%, B:0.4%, surplus is Fe.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (3)
1. a composite roll collars rapid steel, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.3%～1.7%, V:1.5%～2.5%, Cr:6.5%～7.5%, Mo:2.0%～4.0%, W:4.0%～6.0%, Nb:3.0%～5.0%, Co:8.0%～9.0%, S i<1.0%, Mn<1.5%, P<0.04%, S<0.04%, Y:0.25%～0.45%, Ti:0.3%～0.5%, Mg:0.15%～0.25%, Te:0.15%～0.25%, B:0.3%～0.5%, surplus is Fe, this rapid steel tensile strength is 1050MPa～1150MPa, impelling strength is 17J/cm
2～20J/cm
2, in metallographic structure, contain 16～20% high rigidity carbide.
2. a kind of composite roll collars rapid steel as claimed in claim 1, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.4%～1.6%, V:1.8%～2.2%, Cr:6.8%～7.2%, Mo:2.5%～3.5%, W:4.5%～5.5%, Nb:3.5%～4.5%, Co:8.2%～8.8%, S i<1.0%, Mn<1.5%, P<0.04%, S<0.04%, Y:0.30%～0.40%, Ti:0.35%～0.45%, Mg:0.18%～0.22%, Te:0.18%～0.22%, B:0.35%～0.45%, surplus is Fe.
3. a kind of composite roll collars rapid steel as claimed in claim 2, the chemical composition that it is characterized in that this rapid steel is comprised of following component in per-cent (weight): C:1.5%, V:2.0%, Cr:7.0%, Mo:3.0%, W:5.0%, Nb:4.0%, Co:8.5%, S i<1.0%, Mn<1.5%, P<0.04%, S<0.04%, Y:0.35%, Ti:0.40%, Mg:0.20%, Te:0.20%, B:0.40%, surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210020419.4A CN102703823B (en) | 2012-01-19 | 2012-01-19 | High-speed steel for composite roll collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210020419.4A CN102703823B (en) | 2012-01-19 | 2012-01-19 | High-speed steel for composite roll collar |
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| Publication Number | Publication Date |
|---|---|
| CN102703823A CN102703823A (en) | 2012-10-03 |
| CN102703823B true CN102703823B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210020419.4A Expired - Fee Related CN102703823B (en) | 2012-01-19 | 2012-01-19 | High-speed steel for composite roll collar |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627998A (en) * | 2013-11-11 | 2014-03-12 | 马鞍山市恒毅机械制造有限公司 | Alloy steel material for plate hammer for yttrium-containing mines and preparation method thereof |
| CN105750529B (en) * | 2016-04-01 | 2017-10-31 | 枣庄瑞兴机械制造有限公司 | A kind of high tungsten high abrasion compound high speed steel roll and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717986B2 (en) * | 1985-03-16 | 1995-03-01 | 大同特殊鋼株式会社 | Alloy tool steel |
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2012
- 2012-01-19 CN CN201210020419.4A patent/CN102703823B/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| JP昭61-213348A 1986.09.22 |
| 李萍.碳、硼含量对含硼高速钢轧辊材料组织和性能的影响.《中国优秀硕士学位论文全文数据库 工程科技I辑》.2011,(第12期),B022-192. |
| 碳、硼含量对含硼高速钢轧辊材料组织和性能的影响;李萍;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20111231(第12期);B022-192 * |
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| Publication number | Publication date |
|---|---|
| CN102703823A (en) | 2012-10-03 |
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Effective date of registration: 20141125 Address after: 226500, Jiangsu province Rugao white Pu town advance community residents committee 9 groups Patentee after: Nantong Ming Feng Hydraulic Machinery Manufacturing Co., Ltd. Address before: Yinzhou District Heng Jie Heng Jie Zhen Road 315181 No. 50 Zhejiang city of Ningbo Province Patentee before: Zhu Yupan |
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