CN105063502A - Improved cold roller and preparation method thereof - Google Patents

Improved cold roller and preparation method thereof Download PDF

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Publication number
CN105063502A
CN105063502A CN201510441412.3A CN201510441412A CN105063502A CN 105063502 A CN105063502 A CN 105063502A CN 201510441412 A CN201510441412 A CN 201510441412A CN 105063502 A CN105063502 A CN 105063502A
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CN
China
Prior art keywords
cold roll
roll
modified version
cold
weight percentage
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Pending
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CN201510441412.3A
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Chinese (zh)
Inventor
邵黎军
陈彬
曹旭
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Yixing City Yongchang Roll Co Ltd
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Yixing City Yongchang Roll Co Ltd
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Priority to CN201510441412.3A priority Critical patent/CN105063502A/en
Publication of CN105063502A publication Critical patent/CN105063502A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an improved cold roller and a preparation method thereof. The cold roller comprises the components of, by weight, 0.80-1.0% of C, 0.60-1.20% of Si, 0.50-0.80% of Mn, 2.50-3.50% of Cr, 0.10-0.30% of Ni, 0.20-0.50% of Mo, 0.05-0.30% of V and the balance Fe and unavoidable impurities. The roller body thermal treatment technological processes in the preparation method of the cold roller comprise the steps of performing induction hardening thermal treatment at a temperature ranging from 920 DEG C to 950 DEG C; performing low-temperature subzero treatment at a temperature ranging from -80 DEG C to -120 DEG C, and keeping the temperature for 2 to 6 hours; and performing low-temperature tempering thermal treatment at a temperature ranging from 120 DEG C to 160 DEG C, and keeping the temperature for 60 to 100 hours. According to the improved cold roller and the preparation method thereof, roller strength and the depth of a hardening zone of the roller can be greatly improved on the premise of increasing a small amount of manufacturing cost.

Description

A kind of modified version cold roll and preparation method thereof
Technical field
The present invention relates to material and technical field of heat treatment, specifically a kind ofly significantly improve the intensity of roll and the modified version cold roll of depth of hardening zone and preparation method thereof by adjustment member constituent content.
Background technology
Cold roll is one of most important instrument of cold-rolling mill, and it directly contacts with stocking, and in use surface can produce fatigue wear, when there is rolling accident, can be subject to serious thermal shocking or mechanical shock, even ftractureing, peeling off.So the intensity of cold roll itself and thermal shock resistance are just particularly important.At present, Cr3% material is still widely used as a kind of main Cold Work Roll Material, and current, Cold Rolled Plate Thickness is more and more thinner, and the corresponding probability occurring rolling accident is also in increase.In order to improve the steel rolling output of roll, user requires more and more higher to the depth of hardening zone of cold roll.So the performance of original Cr3% material cannot meet service requirements.
Summary of the invention
The object of the invention is the defect existed for prior art, provide a kind of and significantly improve the intensity of roll and the modified version cold roll of depth of hardening zone and preparation method thereof by adjustment member constituent content.
The object of the invention is to solve by the following technical programs:
A kind of modified version cold roll, is characterized in that: the composition of this cold roll and weight percentage thereof are: the C of 0.80-1.0%; The Si of 0.60-1.20%; The Mn of 0.50-0.80%; The Cr of 2.50-3.50%; The Ni of 0.10-0.30%; The Mo of 0.20-0.50%; The V of 0.05-0.30%; All the other compositions are Fe and inevitable impurity.
In described cold roll, the weight percentage of C is 0.85-0.98%.
In described cold roll, the weight percentage of Cr is 2.70-3.30%.
In described cold roll, the weight percentage of Si is 0.67-1.02%.
In described cold roll, the weight percentage of Mn is 0.52-0.76%.
The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, and wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 920-950 DEG C of induction quenching thermal treatment; Then-80 ~-120 DEG C of deep-cool treatments are carried out, soaking time 2-6 hour; Finally carry out 120 ~ 160 DEG C of low-temperature tempering heat treatment, soaking time 60-100 hour.
Cold roll translational speed in described induction quenching heat treatment process is 0.5 ~ 0.7mm/s.
The present invention has the following advantages compared to existing technology:
The present invention is by adjustment member constituent content and make full use of the beneficial effect of Si, Mn non-metallic element in steel, reach the anti-tempered performance and through hardening performance that improve roll, under the prerequisite of a small amount of increase manufacturing cost, significantly can improve intensity and the depth of hardening zone of roll, also be conducive to marketing, promote roll industry and steel development.
The cold roll depth of hardening zone that the present invention makes can reach 20-30mm, surface hardness 92-97HSD, can be widely used in the roughing of cold rolled sheet milling train, finishing stand and skin pass mill group working roll.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
A kind of modified version cold roll, the composition of this cold roll and weight percentage thereof are: the C of 0.80-1.0%; The Si of 0.60-1.20%; The Mn of 0.50-0.80%; The Cr of 2.50-3.50%; The Ni of 0.10-0.30%; The Mo of 0.20-0.50%; The V of 0.05-0.30%; All the other compositions are Fe and inevitable impurity; The preparation method of this modified version cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 920-950 DEG C of induction quenching thermal treatment, the cold roll translational speed in induction quenching heat treatment process is 0.5 ~ 0.7mm/s; Then-80 ~-120 DEG C of deep-cool treatments are carried out, soaking time 2-6 hour; Finally carry out 120 ~ 160 DEG C of low-temperature tempering heat treatment, soaking time 60-100 hour.In addition, for optimizing the constituent content in this cold roll composition further, improve intensity and the depth of hardening zone of roll, in cold roll, the weight percentage of C is further defined to 0.85-0.98%; In cold roll, the weight percentage of Cr is further defined to 2.70-3.30; In cold roll, the weight percentage of Si is further defined to 0.67-1.02%; In cold roll, the weight percentage of Mn is further defined to 0.52-0.76%.
Embodiment one
A preparation method for modified version cold roll, the composition of this modified version cold roll and weight percentage thereof are: the C of 0.85%; The Si of 0.88%; The Mn of 0.68%; The Cr of 3.1%; The Ni of 0.24%; The Mo of 0.32%; The V of 0.12%; All the other compositions are Fe and inevitable impurity; The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 940 DEG C of induction quenching thermal treatments, the cold roll translational speed in induction quenching heat treatment process is 0.65mm/s; Then-80 DEG C of deep-cool treatments are carried out, soaking time 3 hours; Finally carry out 135 DEG C of low-temperature tempering heat treatment, soaking time 90 hours.Final obtained cold roll surface hardness 95HSD, through user's service test, depth of hardening zone reaches 24mm, meets operation technique requirement.
Embodiment two
A preparation method for modified version cold roll, the composition of this modified version cold roll and weight percentage thereof are: the C of 0.88%; The Si of 1.02%; The Mn of 0.52%; The Cr of 3.3%; The Ni of 0.23%; The Mo of 0.38%; The V of 0.14%; All the other compositions are Fe and inevitable impurity; The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 950 DEG C of induction quenching thermal treatments, the cold roll translational speed in induction quenching heat treatment process is 0.7mm/s; Then-120 DEG C of deep-cool treatments are carried out, soaking time 2 hours; Finally carry out 120 DEG C of low-temperature tempering heat treatment, soaking time 100 hours.Final obtained cold roll surface hardness 97HSD, through user's service test, depth of hardening zone reaches 20mm, meets operation technique requirement.
Embodiment three
A preparation method for modified version cold roll, the composition of this modified version cold roll and weight percentage thereof are: the C of 0.82%; The Si of 0.95%; The Mn of 0.76%; The Cr of 2.9%; The Ni of 0.15%; The Mo of 0.21%; The V of 0.08%; All the other compositions are Fe and inevitable impurity; The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 925 DEG C of induction quenching thermal treatments, the cold roll translational speed in induction quenching heat treatment process is 0.5mm/s; Then-80 DEG C of deep-cool treatments are carried out, soaking time 5 hours; Finally carry out 145 DEG C of low-temperature tempering heat treatment, soaking time 75 hours.Final obtained cold roll surface hardness 94HSD, through user's service test, depth of hardening zone reaches 26mm, meets operation technique requirement.
Embodiment four
A preparation method for modified version cold roll, the composition of this modified version cold roll and weight percentage thereof are: the C of 0.95%; The Si of 0.67%; The Mn of 0.63%; The Cr of 2.75%; The Ni of 0.30%; The Mo of 0.25%; The V of 0.12%; All the other compositions are Fe and inevitable impurity; The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 935 DEG C of induction quenching thermal treatments, the cold roll translational speed in induction quenching heat treatment process is 0.55mm/s; Then-90 DEG C of deep-cool treatments are carried out, soaking time 4 hours; Finally carry out 130 DEG C of low-temperature tempering heat treatment, soaking time 95 hours.Final obtained cold roll surface hardness 96HSD, through user's service test, depth of hardening zone reaches 23mm, meets operation technique requirement.
Embodiment five
A preparation method for modified version cold roll, the composition of this modified version cold roll and weight percentage thereof are: the C of 0.98%; The Si of 0.84%; The Mn of 0.58%; The Cr of 2.82%; The Ni of 0.28%; The Mo of 0.31%; The V of 0.18%; All the other compositions are Fe and inevitable impurity; The preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 940 DEG C of induction quenching thermal treatments, the cold roll translational speed in induction quenching heat treatment process is 0.55mm/s; Then-100 DEG C of deep-cool treatments are carried out, soaking time 3 hours; Finally carry out 155 DEG C of low-temperature tempering heat treatment, soaking time 65 hours.Final obtained cold roll surface hardness 93HSD, through user's service test, depth of hardening zone reaches 28mm, meets operation technique requirement.
The chemical composition weight percentage sum of the cold roll in the present invention is 100%.
The present invention is by adjustment member constituent content and make full use of the beneficial effect of Si, Mn non-metallic element in steel, reach the anti-tempered performance and through hardening performance that improve roll, under the prerequisite of a small amount of increase manufacturing cost, significantly can improve intensity and the depth of hardening zone of roll, also be conducive to marketing, promote roll industry and steel development.The cold roll depth of hardening zone that the present invention makes can reach 20-30mm, surface hardness 92-97HSD, can be widely used in the roughing of cold rolled sheet milling train, finishing stand and skin pass mill group working roll.
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 (7)

1. a modified version cold roll, is characterized in that: the composition of this cold roll and weight percentage thereof are: the C of 0.80-1.0%; The Si of 0.60-1.20%; The Mn of 0.50-0.80%; The Cr of 2.50-3.50%; The Ni of 0.10-0.30%; The Mo of 0.20-0.50%; The V of 0.05-0.30%; All the other compositions are Fe and inevitable impurity.
2. modified version cold roll according to claim 1, is characterized in that: in described cold roll, the weight percentage of C is 0.85-0.98%.
3. modified version cold roll according to claim 1 and 2, is characterized in that: in described cold roll, the weight percentage of Cr is 2.70-3.30%.
4. modified version cold roll according to claim 1, is characterized in that: in described cold roll, the weight percentage of Si is 0.67-1.02%.
5. modified version cold roll according to claim 1, is characterized in that: in described cold roll, the weight percentage of Mn is 0.52-0.76%.
6. according to the preparation method of the arbitrary described modified version cold roll of claim 1-5, it is characterized in that: the preparation method of this cold roll carries out in the steps below: blank making → roughing → Tempering and Quenching → semi-finishing → body of roll thermal treatment → precision work → finished product roller, wherein the body of roll thermal treatment process flow process of this cold roll is as follows: first adopt 920-950 DEG C of induction quenching thermal treatment; Then-80 ~-120 DEG C of deep-cool treatments are carried out, soaking time 2-6 hour; Finally carry out 120 ~ 160 DEG C of low-temperature tempering heat treatment, soaking time 60-100 hour.
7. the preparation method of modified version cold roll according to claim 6, is characterized in that: the cold roll translational speed in described induction quenching heat treatment process is 0.5 ~ 0.7mm/s.
CN201510441412.3A 2015-07-25 2015-07-25 Improved cold roller and preparation method thereof Pending CN105063502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201510441412.3A CN105063502A (en) 2015-07-25 2015-07-25 Improved cold roller and preparation method thereof

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107686942A (en) * 2017-08-21 2018-02-13 宜兴市永昌轧辊有限公司 A kind of cold roll for possessing high roughness retention property
CN107937673A (en) * 2017-12-29 2018-04-20 江苏共昌轧辊股份有限公司 A kind of heat treatment method of New Type of Cold Roller
CN108034899A (en) * 2017-12-12 2018-05-15 中钢集团邢台机械轧辊有限公司 A kind of high-speed broad-width aluminium foil working roll
CN108220775A (en) * 2017-12-29 2018-06-29 中钢集团邢台机械轧辊有限公司 A kind of copper foil operation roll of mill
CN109536696A (en) * 2018-12-10 2019-03-29 宜兴市永昌轧辊有限公司 A kind of tempering process of New Type of Cold Roller
CN109554612A (en) * 2018-12-10 2019-04-02 宜兴市永昌轧辊有限公司 A kind of novel cold rolling working roll and preparation method thereof
CN111485084A (en) * 2019-01-29 2020-08-04 宝山钢铁股份有限公司 750 HBW-grade ultrahigh-hardness protective steel plate and manufacturing method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107686942A (en) * 2017-08-21 2018-02-13 宜兴市永昌轧辊有限公司 A kind of cold roll for possessing high roughness retention property
CN108034899B (en) * 2017-12-12 2021-05-14 中钢集团邢台机械轧辊有限公司 High-speed broad width aluminium foil working roll
CN108034899A (en) * 2017-12-12 2018-05-15 中钢集团邢台机械轧辊有限公司 A kind of high-speed broad-width aluminium foil working roll
CN108220775A (en) * 2017-12-29 2018-06-29 中钢集团邢台机械轧辊有限公司 A kind of copper foil operation roll of mill
CN107937673A (en) * 2017-12-29 2018-04-20 江苏共昌轧辊股份有限公司 A kind of heat treatment method of New Type of Cold Roller
CN109536696A (en) * 2018-12-10 2019-03-29 宜兴市永昌轧辊有限公司 A kind of tempering process of New Type of Cold Roller
CN109554612A (en) * 2018-12-10 2019-04-02 宜兴市永昌轧辊有限公司 A kind of novel cold rolling working roll and preparation method thereof
CN111485084A (en) * 2019-01-29 2020-08-04 宝山钢铁股份有限公司 750 HBW-grade ultrahigh-hardness protective steel plate and manufacturing method thereof

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Application publication date: 20151118

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