CN104711486A - High speed steel cold roller - Google Patents
High speed steel cold roller Download PDFInfo
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- CN104711486A CN104711486A CN201510025109.5A CN201510025109A CN104711486A CN 104711486 A CN104711486 A CN 104711486A CN 201510025109 A CN201510025109 A CN 201510025109A CN 104711486 A CN104711486 A CN 104711486A
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Abstract
The invention discloses a high speed steel cold roller. The high speed steel cold roller comprises, by mass, 0.6-1.0% of C, 0.5-1.0% of Si, 0.2-1.0% of Mn, 6.0-10.0% of Cr, 0.2-0.8% of Ni, 0.5-2.0% of Mo, 0.1-0.5% of W, 0.5-2.0% of V, 0.05-0.20% of Nb, and the balance of Fe and inevitable impurities. The surface hardness, the hardness uniformity, the neck tensile strength and the V notch impact work of the roller are 63-67HRC, 1.5HRC or less, 1200MPa or more and 20J or more respectively. The produced high speed steel cold roller has the advantages of strong surface roughness maintaining ability and good accident resistance when the high speed steel cold roller is used for rolling high strength steel plates, can be widely used in rough rolling and finish rolling frames of a cold rolled steel band rolling mill, and greatly improves working efficiency of the rolling mill.
Description
Technical field
The present invention relates to roll technology field, specifically a kind of possess good hardenability, hardening capacity and red hardness and the good high speed steel cold roller of surfaceness hold facility.
Background technology
Along with the fast development of household electrical appliances, automobile, electronic industry, a lot of large-scale tandem cold continuous rolling unit is also gone into operation successively.These high-grade fields such as household electrical appliances, automobile are very high to the specification of quality of plate surface, the strength increases of steel plate is high, require the roll used to possess roughness retention is good, the rolling cycle long, anti-accident performance is good simultaneously, the performances such as roll material intensity is high, the over-all properties of such breaker roll requires just to improve greatly.Rapid steel, because of its excellent wear resistance, red hardness, will be the development trend of roll material.
Application number be 201310251691.8 Chinese patent disclose one " high carbon high-speed steel ", disclosed in it, chemical composition consists of by mass percentage: C:1.8-2.8%, Si :≤1%, Mn :≤1%, Cr:5-8%, Ni:0.5-1.5%, Mo:3.5-4.0%, W:3-5%, V:4-6%, Nb:0.8-1.5%, Al:0.3-0.6%, Co:1-3%, all the other are Fe and inevitable trace element.The roll made is used for merchant bar mill finishing stand, can significantly improve operating rate of rolling mill, alleviate labor strength, enhance productivity.But the material interalloy total amount of this high carbon high-speed steel is too high, cause segregation to be inclined to serious, homogeneity of structure is wayward; Cost is too high simultaneously, is not easy to promote the use of; And carbon content is too high, forging crack tendency is large.
Summary of the invention
The object of the invention is the deficiency existed for existing high speed steel roll material, a kind of high speed steel cold roller after chemical composition is optimized is provided, this high speed steel cold roller possesses good hardenability, hardening capacity and red hardness and surfaceness hold facility is better, can significantly improve the operating efficiency of cold-reduced sheet, strip mill.
The object of the invention is to solve by the following technical programs:
A kind of high speed steel cold roller, is characterized in that: this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.6-1.0%; Si is 0.5-1.0%; Mn is 0.2-1.0%; Cr is 6.0-10.0%; Ni is 0.2-0.8%; Mo is 0.5-2.0%; W is 0.1-0.5%; V is 0.5-2.0%; Nb is 0.05-0.20%; All the other are Fe and inevitable impurity.
Described high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.7-0.8%; Si is 0.8-1.0%; Mn is 0.2-0.5%; Cr is 7-9%; Ni is 0.2-0.6%; Mo is 1.0-2.0%; W is 0.1-0.2%; V is 0.8-1.5%; Nb is 0.05-0.10%; All the other are Fe and inevitable impurity.
The mass percent of described Si is 0.8-0.95%.
Described high speed steel cold roller starting material are through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, the finished product roller surface hardness obtained is 63-67HRC and uniformity of hardness≤1.5HRC, the tensile strength >=1200MPa of finished product roller roll neck and the v-notch of finished product roller ballistic work >=20J.
The surface hardness of described finished product roller can reach 65-66HRC.
The present invention has the following advantages compared to existing technology:
High speed steel cold roller of the present invention, by keeping relatively high Alloy Elements Mo, the content of V, is combined with C while crystal grain thinning, forms MC, M
2c type carbide, makes high speed steel cold roller possess excellent wear resisting property; Retain appropriate W to increase red hardness, the hot-cracking resistance of high speed steel cold roller, improve the anti-accident performance of roll; Reduce carbon content and alloy total amount, significantly can reduce microstructure segregation on the one hand, reduce forging crack risk, improve lumber recovery, the opposing party also significantly can reduce material cost, economizes on resources, also be conducive to marketing, promote roll industry and steel development.
Roller surface hardness of the present invention can reach 63-67HRC, wear resisting property and surfaceness hold facility can reach more than the twice of conventional MC5 roll, when obtained high speed steel cold roller is used for rolling high-strength degree steel plate, strong and the anti-accident better performances of surfaceness hold facility, the roughing of cold rolled sheet milling train, finishing stand can be widely used in, significantly improve milling train operating efficiency.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
A kind of high speed steel cold roller, this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.6-1.0%; Si is 0.5-1.0%; Mn is 0.2-1.0%; Cr is 6.0-10.0%; Ni is 0.2-0.8%; Mo is 0.5-2.0%; W is 0.1-0.5%; V is 0.5-2.0%; Nb is 0.05-0.20%; All the other are Fe and inevitable impurity.Chemical composition is optimized further, then obtains high speed steel cold roller and comprise the following chemical components formed by mass percentage: C is 0.7-0.8%; Si is 0.8-1.0%; Mn is 0.2-0.5%; Cr is 7-9%; Ni is 0.2-0.6%; Mo is 1.0-2.0%; W is 0.1-0.2%; V is 0.8-1.5%; Nb is 0.05-0.10%; All the other are Fe and inevitable impurity.Wherein the mass percent of Si is 0.8-0.95%.
By high speed steel cold roller starting material through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, the finished product roller surface hardness obtained is 63-67HRC and uniformity of hardness≤1.5HRC, the tensile strength >=1200MPa of finished product roller roll neck and the v-notch of finished product roller ballistic work >=20J.When the finished product roller obtained is used for rolling high-strength degree steel plate, surfaceness hold facility is strong, and anti-accident better performances, the roughing of cold rolled sheet milling train, finishing stand can be widely used in.
Below by specific embodiment, High Speed Steel for Roller cold roll of the present invention is further described.
Embodiment one
A kind of high speed steel cold roller, this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.7%; Si is 0.95%; Mn is 0.3%; Cr is 7.5%; Ni is 0.4%; Mo is 1.0%; W is 0.1%; V is 0.9%; Nb is 0.07%; All the other are Fe and inevitable impurity.Described high speed steel cold roller starting material, through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, detect obtained finished product roller: obtaining surface hardness is 66-67HRC, uniformity of hardness≤1.5HRC, the tensile strength 1340MPa of roll neck and the high speed steel cold roller of v-notch ballistic work 26J.
Embodiment two
A kind of high speed steel cold roller, this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.75%; Si is 0.85%; Mn is 0.5%; Cr is 9%; Ni is 0.2%; Mo is 1.5%; W is 0.15%; V is 1.2%; Nb is 0.05%; All the other are Fe and inevitable impurity.Described high speed steel cold roller starting material, through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, detect obtained finished product roller: obtaining surface hardness is 65-66HRC, uniformity of hardness≤1.5HRC, the tensile strength 1280MPa of roll neck and the high speed steel cold roller of v-notch ballistic work 23J.
Embodiment three
A kind of high speed steel cold roller, this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.8%; Si is 0.8%; Mn is 0.2%; Cr is 7%; Ni is 0.5%; Mo is 2.0%; W is 0.18%; V is 1.5%; Nb is 0.09%; All the other are Fe and inevitable impurity.Described high speed steel cold roller starting material, through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, detect obtained finished product roller: obtaining surface hardness is 66-67HRC, uniformity of hardness≤1.5HRC, the tensile strength 1320MPa of roll neck and the high speed steel cold roller of v-notch ballistic work 28J.
Embodiment four
A kind of high speed steel cold roller, this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.78%; Si is 1.0%; Mn is 0.4%; Cr is 8%; Ni is 0.6%; Mo is 1.3%; W is 0.2%; V is 1.1%; Nb is 0.10%; All the other are Fe and inevitable impurity.Described high speed steel cold roller starting material, through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, detect obtained finished product roller: obtaining surface hardness is 65-66HRC, uniformity of hardness≤1.5HRC, the tensile strength 1260MPa of roll neck and the high speed steel cold roller of v-notch ballistic work 25J.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change that technical scheme basis is done, all falls within scope; The technology that the present invention does not relate to all is realized by prior art.
Claims (5)
1. a high speed steel cold roller, is characterized in that: this high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.6-1.0%; Si is 0.5-1.0%; Mn is 0.2-1.0%; Cr is 6.0-10.0%; Ni is 0.2-0.8%; Mo is 0.5-2.0%; W is 0.1-0.5%; V is 0.5-2.0%; Nb is 0.05-0.20%; All the other are Fe and inevitable impurity.
2. high speed steel cold roller according to claim 1, is characterized in that: described high speed steel cold roller comprises the following chemical components formed by mass percentage: C is 0.7-0.8%; Si is 0.8-1.0%; Mn is 0.2-0.5%; Cr is 7-9%; Ni is 0.2-0.6%; Mo is 1.0-2.0%; W is 0.1-0.2%; V is 0.8-1.5%; Nb is 0.05-0.10%; All the other are Fe and inevitable impurity.
3. high speed steel cold roller according to claim 1 and 2, is characterized in that: the mass percent of described Si is 0.8-0.95%.
4. high speed steel cold roller according to claim 1, it is characterized in that: described high speed steel cold roller starting material are through electrosmelting → external refining → vacuum stripping → casting electrode → esr → forging → Spheroidizing Annealing → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, the finished product roller surface hardness obtained is 63-67HRC and uniformity of hardness≤1.5HRC, the tensile strength >=1200MPa of finished product roller roll neck and the v-notch of finished product roller ballistic work >=20J.
5. high speed steel cold roller according to claim 4, is characterized in that: the surface hardness of described finished product roller can reach 65-66HRC.
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| CN201510025109.5A CN104711486A (en) | 2015-01-19 | 2015-01-19 | High speed steel cold roller |
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| CN201510025109.5A CN104711486A (en) | 2015-01-19 | 2015-01-19 | High speed steel cold roller |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063503A (en) * | 2015-07-25 | 2015-11-18 | 宜兴市永昌轧辊有限公司 | Highly abrasion-resistant cold roller and preparation method thereof |
| CN105568133A (en) * | 2016-01-05 | 2016-05-11 | 山西太钢不锈钢股份有限公司 | Cold-rolled working roller material and heat treatment method thereof |
| CN106216405A (en) * | 2016-08-26 | 2016-12-14 | 中钢集团邢台机械轧辊有限公司 | It is applicable to nitridation high speed steel rider and the manufacture method thereof of bar cutting frame |
| CN110257706A (en) * | 2019-07-03 | 2019-09-20 | 常州市中宇合金轧辊厂 | Trough of belt casting die steel welded still pipe cold roll and its processing technology |
| CN112743064A (en) * | 2020-12-29 | 2021-05-04 | 唐山先隆轧辊实业有限公司 | High-nitrogen high-speed steel centrifugal composite roller and preparation process thereof |
| CN115233116A (en) * | 2022-07-22 | 2022-10-25 | 中钢集团邢台机械轧辊有限公司 | Preparation method of finished rack working roll suitable for high-strength steel rolling |
Citations (5)
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| JPS5916954A (en) * | 1982-07-20 | 1984-01-28 | Nippon Steel Corp | Roller for continuous casting |
| JPH03254340A (en) * | 1990-03-03 | 1991-11-13 | Kawasaki Steel Corp | Manufacture of raw material for bearing having excellent service life to rolling fatigue |
| CN101240402A (en) * | 2008-02-04 | 2008-08-13 | 向勇 | Cast high-boron high-speed steel for composite ring roller and heat treatment method thereof |
| CN102400048A (en) * | 2010-09-15 | 2012-04-04 | 宝山钢铁股份有限公司 | Cold work roll steel for high-strength steel rolling, cold work roll and its manufacturing method |
| CN103320710A (en) * | 2013-06-17 | 2013-09-25 | 唐山亿联盛轧辊有限公司 | High-toughness high-speed steel composite roll |
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2015
- 2015-01-19 CN CN201510025109.5A patent/CN104711486A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916954A (en) * | 1982-07-20 | 1984-01-28 | Nippon Steel Corp | Roller for continuous casting |
| JPH03254340A (en) * | 1990-03-03 | 1991-11-13 | Kawasaki Steel Corp | Manufacture of raw material for bearing having excellent service life to rolling fatigue |
| CN101240402A (en) * | 2008-02-04 | 2008-08-13 | 向勇 | Cast high-boron high-speed steel for composite ring roller and heat treatment method thereof |
| CN102400048A (en) * | 2010-09-15 | 2012-04-04 | 宝山钢铁股份有限公司 | Cold work roll steel for high-strength steel rolling, cold work roll and its manufacturing method |
| CN103320710A (en) * | 2013-06-17 | 2013-09-25 | 唐山亿联盛轧辊有限公司 | High-toughness high-speed steel composite roll |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063503A (en) * | 2015-07-25 | 2015-11-18 | 宜兴市永昌轧辊有限公司 | Highly abrasion-resistant cold roller and preparation method thereof |
| CN105568133A (en) * | 2016-01-05 | 2016-05-11 | 山西太钢不锈钢股份有限公司 | Cold-rolled working roller material and heat treatment method thereof |
| CN106216405A (en) * | 2016-08-26 | 2016-12-14 | 中钢集团邢台机械轧辊有限公司 | It is applicable to nitridation high speed steel rider and the manufacture method thereof of bar cutting frame |
| CN110257706A (en) * | 2019-07-03 | 2019-09-20 | 常州市中宇合金轧辊厂 | Trough of belt casting die steel welded still pipe cold roll and its processing technology |
| CN112743064A (en) * | 2020-12-29 | 2021-05-04 | 唐山先隆轧辊实业有限公司 | High-nitrogen high-speed steel centrifugal composite roller and preparation process thereof |
| CN112743064B (en) * | 2020-12-29 | 2022-07-12 | 唐山先隆轧辊实业有限公司 | High-nitrogen high-speed steel centrifugal composite roller and preparation process thereof |
| CN115233116A (en) * | 2022-07-22 | 2022-10-25 | 中钢集团邢台机械轧辊有限公司 | Preparation method of finished rack working roll suitable for high-strength steel rolling |
| CN115233116B (en) * | 2022-07-22 | 2023-12-12 | 中钢集团邢台机械轧辊有限公司 | Preparation method of finished product rack working roll suitable for high-strength steel rolling |
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Application publication date: 20150617 |
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