CN104032117A - Heat treatment method for ultra-high-hardness nonferrous-metal cold roll - Google Patents

Heat treatment method for ultra-high-hardness nonferrous-metal cold roll Download PDF

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Publication number
CN104032117A
CN104032117A CN201410197475.4A CN201410197475A CN104032117A CN 104032117 A CN104032117 A CN 104032117A CN 201410197475 A CN201410197475 A CN 201410197475A CN 104032117 A CN104032117 A CN 104032117A
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roll
quenching
hardness
metal cold
temperature
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CN201410197475.4A
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CN104032117B (en
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邵黎军
陈彬
曹旭
杨国平
蒋云峰
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Yixing City Yongchang Roll Co Ltd
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Yixing City Yongchang Roll Co Ltd
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Abstract

The invention discloses a heat treatment method for a ultra-high-hardness nonferrous-metal cold roll. The heat treatment method comprises the following steps: a, firstly putting the roll in a preheating furnace for preheating at a temperature of 220-250 DEG C; b, installing the roll on a quenching machine tool to performing rotation water-spraying quenching on the roll body, wherein the working parameters of the quenching machine tool comprise the quenching temperature of 900-950 DEG C, the quenching water temperature of 15-25 DEG C and the quenching water pressure of 0.15-0.30 MPa; c, after quenching, performing ultralow-temperature deep cryogenic treatment at -120 DEG C to -180 DEG C; d, after deep cryogenic treatment is finished, hanging the roll and sending to a heating furnace to quench at 100-120 DEG C, and controlling the quenching time to not less than 72 h; and e, performing hardness detection on the surface of the roll body subjected to quenching, so as to prepare the needed ultra-high-hardness nonferrous-metal cold roll is the surface hardness is qualified. The surface hardness of the prepared roll reaches 102-105 HSD, the hardness uniformity is 1 HSD or less, and the depth of a hardening layer reaches 20 mm or more.

Description

A kind of heat treating method of ultrahigh hardness non-ferrous metal cold roll
Technical field
The present invention relates to a kind of thermal treatment process technology of ultrahigh hardness cold roll, especially for the cold roll of aluminum foil rolling industry, specifically a kind of surface hardness that makes reaches the heat treating method that 102-105HSD, uniformity of hardness≤1HSD and depth of hardening zone reach the ultrahigh hardness non-ferrous metal cold roll containing 3%Cr material more than 20mm.
Background technology
Aluminium foil, because of its good characteristic, is widely used in food-drink, automotive industry, medicine, electronic industry and daily necessities etc.Along with growth in the living standard, people will constantly increase the demand of aluminium foil, demonstrate its wide application prospect, and foil industry also can face the developing period of a high speed.Requiring of the performance of rolling aluminium foil breaker roll itself high (particularly surface hardness, uniformity of hardness).Current most of 3%Cr or the 5%Cr material of adopting of aluminium foil roll, the effective depth of hardening of the 3%Cr of domestic production is generally in 15mm left and right, and surface hardness can only reach 98-102HSD and uniformity of hardness generally in 2HSD left and right.Effective depth of hardening requires roll more than 20mm just must select the 5%Cr material that price is higher to manufacture.The most of dependence on import of at present domestic this type of used roll.
Summary of the invention
The object of the invention is for current existing 3%Cr roller depth of hardening zone problem, provide a kind of surface hardness that makes to reach the heat treating method that 102-105HSD, uniformity of hardness≤1HSD and depth of hardening zone reach the ultrahigh hardness non-ferrous metal cold roll containing 3%Cr material more than 20mm.
The object of the invention is to solve by the following technical programs:
A kind of heat treating method of ultrahigh hardness non-ferrous metal cold roll, it is characterized in that: the composition of this cold roll and weight percent thereof are: the Cr of 2.80-3.20%, the C of 0.90-1.0%, the Si of 0.30-0.50%, the Mn of 0.20-0.50%, the Ni of 0.10-0.30%, the Mo of 0.20-0.40%, the V of 0.10-0.20% ,≤0.015% S, P, all the other compositions are Fe, and the weight percent sum of each composition is 100%; The heat treating method step of this cold roll is as follows:
A, first roll is put into preheating oven, at the temperature of 220~250 ℃, carry out preheating;
B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 900~950 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are 0.15~0.30MPa;
C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-120~-180 ℃ after having quenched;
After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 100~120 ℃ of tempering, tempering time is not less than 72h;
E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.
Roll in described step a is no less than 12h warm up time.
Roll in described step b is when spray quenching, and roller rotational speed is 30~35r/min, and roll translational speed is 30~42mm/min.
Roll in described step b carries out cooling after quenching finishes, and cool-storage time is 45~80min.
The very low temperature sub-zero treatment time in described step c is no less than 2h.
Roll will carry out roughing and modifier treatment to blank before thermal treatment, made quenching and tempering hardness reach 40-50HSD, then the roll after modified was carried out to semi-finishing and made roll diameter be ground to the size of setting.
The present invention has the following advantages compared to existing technology:
The present invention makes after processing by preheating, quenching, very low temperature sub-zero treatment, low-temperaturetempering more than the hardened layer of roller degree of depth containing 3%Cr material reaches 20mm, to approach the hardened layer of roller degree of depth containing 5%Cr material; While is more abundant at the austenitizing of higher quenching temperature bottom roll material, makes can the reach≤1HSD of uniformity of hardness of roll.
Thermal treatment process of the present invention has improved matrix solid solution carbon amount by heat, increased the remained austenite content after quenching, pass through again the very low temperature sub-zero treatment of-120~-180 ℃, improved martensitic content in material microstructure, thereby made more than roll hardness containing 3%Cr material is increased to 102HSD.
After roll of the present invention is processed by preheating, quenching, very low temperature sub-zero treatment, low-temperaturetempering, make to have reached the roller performance containing 5%Cr material containing the roller performance of 3%Cr material, reduced use cost.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
A kind of heat treating method of ultrahigh hardness non-ferrous metal cold roll, the composition of this cold roll and weight percent thereof are: the Cr of 2.80-3.20%, the C of 0.90-1.0%, the Si of 0.30-0.50%, the Mn of 0.20-0.50%, the Ni of 0.10-0.30%, the Mo of 0.20-0.40%, the V of 0.10-0.20% ,≤0.015% S, P, all the other compositions are Fe, and the weight percent sum of each composition is 100%; The heat treating method step of this cold roll is as follows: a, first roll is put into preheating oven, carry out preheating, and be no less than 12h warm up time at the temperature of 220~250 ℃; B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 900~950 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are that 0.15~0.30MPa, roller rotational speed are that 30~35r/min and roll translational speed are 30~42mm/min, and it is 45~80min that roll needs to carry out cooling and cool-storage time after quenching finishes; C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-120~-180 ℃ after having quenched, and the very low temperature sub-zero treatment time is no less than 2h; After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 100~120 ℃ of tempering, tempering time is not less than 72h; E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.Roll will carry out roughing and modifier treatment to blank before carrying out this thermal treatment process in addition, make quenching and tempering hardness reach 40-50HSD, then the roll after modified is carried out after semi-finishing makes roll diameter be ground to the size of setting just heat-treating.
Embodiment mono-
According to the chemical composition production of designed roll roll blank of the present invention, ultrasound examination blank makes it meet correlation technique requirement, blank is carried out to roughing and modifier treatment, make quenching and tempering hardness reach 40-50HSD, then the roll after modified is carried out after semi-finishing makes roll diameter be ground to the size of setting just heat-treating.Heat treated process is as follows: a, first roll is put into preheating oven, carry out preheating, and be no less than 12h warm up time at the temperature of 250 ℃; B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 900 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are that 0.25MPa, roller rotational speed are that 35r/min and roll translational speed are 36mm/min, and it is 60min that roll needs to carry out cooling and cool-storage time after quenching finishes; C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-160 ℃ after having quenched, and the very low temperature sub-zero treatment time is no less than 2h; After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 110 ℃ of tempering, tempering time is not less than 72h; E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.
Embodiment bis-
According to the chemical composition production of designed roll roll blank of the present invention, ultrasound examination blank makes it meet correlation technique requirement, blank is carried out to roughing and modifier treatment, make quenching and tempering hardness reach 40-50HSD, then the roll after modified is carried out after semi-finishing makes roll diameter be ground to the size of setting just heat-treating.Heat treated process is as follows: a, first roll is put into preheating oven, carry out preheating, and be no less than 12h warm up time at the temperature of 230 ℃; B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 950 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are that 0.15MPa, roller rotational speed are that 30r/min and roll translational speed are 42mm/min, and it is 80min that roll needs to carry out cooling and cool-storage time after quenching finishes; C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-140 ℃ after having quenched, and the very low temperature sub-zero treatment time is no less than 2h; After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 100 ℃ of tempering, tempering time is not less than 72h; E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.
Embodiment tri-
According to the chemical composition production of designed roll roll blank of the present invention, ultrasound examination blank makes it meet correlation technique requirement, blank is carried out to roughing and modifier treatment, make quenching and tempering hardness reach 40-50HSD, then the roll after modified is carried out after semi-finishing makes roll diameter be ground to the size of setting just heat-treating.Heat treated process is as follows: a, first roll is put into preheating oven, carry out preheating, and be no less than 12h warm up time at the temperature of 220 ℃; B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 930 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are that 0.30MPa, roller rotational speed are that 33r/min and roll translational speed are 30mm/min, and it is 45min that roll needs to carry out cooling and cool-storage time after quenching finishes; C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-180 ℃ after having quenched, and the very low temperature sub-zero treatment time is no less than 2h; After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 120 ℃ of tempering, tempering time is not less than 72h; E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.
The ultrahigh hardness non-ferrous metal cold roll obtaining after above-described embodiment thermal treatment can obtain after after testing, and the surface hardness of roll reaches more than 102-105HSD, uniformity of hardness≤1HSD and depth of hardening zone reach 20mm.
The present invention makes after processing by preheating, quenching, very low temperature sub-zero treatment, low-temperaturetempering more than the hardened layer of roller degree of depth containing 3%Cr material reaches 20mm, to approach the hardened layer of roller degree of depth containing 5%Cr material; While is more abundant at the austenitizing of higher quenching temperature bottom roll material, makes can the reach≤1HSD of uniformity of hardness of roll; Thermal treatment process has improved matrix solid solution carbon amount by heat, increased the remained austenite content after quenching, pass through again the very low temperature sub-zero treatment of-120~-180 ℃, improved martensitic content in material microstructure, thereby made more than roll hardness containing 3%Cr material is increased to 102HSD; Containing the roll of 3%Cr material by above-mentioned thermal treatment after, make its performance reach the roller performance that contains 5%Cr material, reduced use cost.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technical scheme basis, within all falling into protection domain of the present invention; The technology that the present invention does not relate to all can be realized by prior art.

Claims (6)

1. the heat treating method of a ultrahigh hardness non-ferrous metal cold roll, it is characterized in that: the composition of this cold roll and weight percent thereof are: the Cr of 2.80-3.20%, the C of 0.90-1.0%, the Si of 0.30-0.50%, the Mn of 0.20-0.50%, the Ni of 0.10-0.30%, the Mo of 0.20-0.40%, the V of 0.10-0.20% ,≤0.015% S, P, all the other compositions are Fe, and the weight percent sum of each composition is 100%; The heat treating method step of this cold roll is as follows:
A, first roll is put into preheating oven, at the temperature of 220~250 ℃, carry out preheating;
B, preheated roll is installed on to quenching machine the body of roll is rotated to spray quenching, the working parameter of quenching machine is: quenching temperature is that 900~950 ℃, quench water temperature are that 15~25 ℃, quenching hydraulic pressure are 0.15~0.30MPa;
C, hang in the very low temperature sub-zero treatment that deepfreeze equipment carries out-120~-180 ℃ after having quenched;
After d, sub-zero treatment complete, when roller temperature gos up to room temperature, roll is hung in to process furnace and carry out 100~120 ℃ of tempering, tempering time is not less than 72h;
E, to the roll after tempering carry out body surface hardness detect qualified after, i.e. the required ultrahigh hardness non-ferrous metal cold roll of system.
2. the heat treating method of ultrahigh hardness non-ferrous metal cold roll according to claim 1, is characterized in that: the roll in described step a is no less than 12h warm up time.
3. the heat treating method of ultrahigh hardness non-ferrous metal cold roll according to claim 1, is characterized in that: the roll in described step b is when spray quenching, and roller rotational speed is 30~35r/min, and roll translational speed is 30~42mm/min.
4. the heat treating method of ultrahigh hardness non-ferrous metal cold roll according to claim 1, is characterized in that: the roll in described step b carries out cooling after quenching finishes, and cool-storage time is 45~80min.
5. the heat treating method of ultrahigh hardness non-ferrous metal cold roll according to claim 1, is characterized in that: the very low temperature sub-zero treatment time in described step c is no less than 2h.
6. the heat treating method of ultrahigh hardness non-ferrous metal cold roll according to claim 1, it is characterized in that: roll will carry out roughing and modifier treatment to blank before thermal treatment, make quenching and tempering hardness reach 40-50HSD, then the roll after modified is carried out to semi-finishing and make roll diameter be ground to the size of setting.
CN201410197475.4A 2014-05-12 2014-05-12 A kind of heat treatment method of ultrahigh hardness non-ferrous metal cold roll Active CN104032117B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561505A (en) * 2014-12-30 2015-04-29 中钢集团邢台机械轧辊有限公司 Large-size roller sheath surface induction quenching method
CN105063285A (en) * 2015-07-25 2015-11-18 宜兴市永昌轧辊有限公司 Roll induction quenching process method
CN105483354A (en) * 2015-12-23 2016-04-13 中钢集团邢台机械轧辊有限公司 Heat treatment method for large high-speed steel cold-rolled work roll
CN106011665A (en) * 2016-05-23 2016-10-12 重集团常州华冶轧辊有限公司 Finish-rolling working roller made of new material and used for large aluminum hot mill and induction quenching method of finish-rolling working 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
CN109762968A (en) * 2019-03-26 2019-05-17 江苏润孚机械轧辊制造有限公司 A kind of method of common forged steel roller stock production silicon steel cold roll
CN110230005A (en) * 2019-05-22 2019-09-13 山东钢铁股份有限公司 A kind of high carbon chromium cold roll blank steel and preparation method thereof
CN110684890A (en) * 2019-10-31 2020-01-14 宝钢轧辊科技有限责任公司 Cryogenic treatment method for forged steel cold roll and novel nozzle adopted by cryogenic treatment method
CN111438187A (en) * 2020-04-03 2020-07-24 江苏大亚铝业有限公司 Production process for preparing aluminum foil for lithium battery by high-hardness roller

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CN1840714A (en) * 2005-03-29 2006-10-04 宝钢集团常州轧辊制造公司 Method for making quench hardening layer of cold roll barrel

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104561505A (en) * 2014-12-30 2015-04-29 中钢集团邢台机械轧辊有限公司 Large-size roller sheath surface induction quenching method
CN105063285A (en) * 2015-07-25 2015-11-18 宜兴市永昌轧辊有限公司 Roll induction quenching process method
CN105063285B (en) * 2015-07-25 2017-09-01 宜兴市永昌轧辊有限公司 A kind of roll induction hardening process method
CN105483354A (en) * 2015-12-23 2016-04-13 中钢集团邢台机械轧辊有限公司 Heat treatment method for large high-speed steel cold-rolled work roll
CN106011665A (en) * 2016-05-23 2016-10-12 重集团常州华冶轧辊有限公司 Finish-rolling working roller made of new material and used for large aluminum hot mill and induction quenching method of finish-rolling working 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
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
CN109762968A (en) * 2019-03-26 2019-05-17 江苏润孚机械轧辊制造有限公司 A kind of method of common forged steel roller stock production silicon steel cold roll
CN110230005A (en) * 2019-05-22 2019-09-13 山东钢铁股份有限公司 A kind of high carbon chromium cold roll blank steel and preparation method thereof
CN110684890A (en) * 2019-10-31 2020-01-14 宝钢轧辊科技有限责任公司 Cryogenic treatment method for forged steel cold roll and novel nozzle adopted by cryogenic treatment method
CN111438187A (en) * 2020-04-03 2020-07-24 江苏大亚铝业有限公司 Production process for preparing aluminum foil for lithium battery by high-hardness roller

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