CN109536696A - A kind of tempering process of New Type of Cold Roller - Google Patents
A kind of tempering process of New Type of Cold Roller Download PDFInfo
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- CN109536696A CN109536696A CN201811505294.8A CN201811505294A CN109536696A CN 109536696 A CN109536696 A CN 109536696A CN 201811505294 A CN201811505294 A CN 201811505294A CN 109536696 A CN109536696 A CN 109536696A
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- tempering
- temperature
- cold roll
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- hardness
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of tempering process of New Type of Cold Roller, heating including cold roll routine tempering process, heat preservation and cooling procedure, wherein the tempering temperature in conventional tempering process is 110-180 DEG C, tempering insulation time is 40-130h and the aimed hardness of cold roll is 90-98HSD, tempering temperature follows the increase of cold roll aimed hardness numerical value and reduces and soaking time follows the increase of cold roll aimed hardness numerical value and increases, it is characterized by: in the case where obtaining same target hardness, tempering temperature in insulating process improves 20-30 DEG C and tempering insulation time shortens 60-70%；The tempering process enables to residual stress to decrease by 18-35%.The cracking risk in the residual stress and use process inside roll can be greatly reduced in technique of the invention；And the soaking time of heat treatment is greatly shortened, improve equipment service efficiency；The tempering process is simple and easy, is suitable for promoting.
Description
Technical field
It is specifically a kind of by improving tempering heat preservation temperature the present invention relates to the preparation technical field of cold roll
Degree shortens tempering insulation time to reduce the tempering process of the New Type of Cold Roller of residual stress.
Background technique
Cold roll is important steel rolling tool, and surface hardness is higher, reaches 90-98HSD, used in this way to return
Fiery holding temperature is generally just relatively low, and between 110-180 DEG C, since tempering temperature is lower, the remnants inside roll are answered
Power is larger, brings biggish cracking risk to actual use.
Summary of the invention
In light of the defects in the prior art, the purpose of the invention is to provide one kind by improving tempering temperature, contracting
Short tempering insulation time reduces the tempering process of the New Type of Cold Roller of residual stress.
The purpose of the present invention is what is solved by the following technical programs:
A kind of tempering process of New Type of Cold Roller, heating, heat preservation and cooling procedure including cold roll routine tempering process, wherein
Tempering temperature in conventional tempering process is 110-180 DEG C, tempering insulation time is 50-130h and the target of cold roll is hard
Degree is 90-98HSD, and tempering temperature follows the increase of cold roll aimed hardness numerical value and reduces and tempering insulation time follows
The increase of cold roll aimed hardness numerical value and increase, it is characterised in that: in the case where obtaining same target hardness, insulating process
In tempering temperature improve 20-30 DEG C and tempering insulation time and shorten 60-70%；The tempering process enables to remnants to answer
Power decreases by 18-35%.
When the aimed hardness of cold roll is 90-92HSD, the tempering temperature in insulating process be 200-210 DEG C and
Tempering insulation time is 15-20h.
When the aimed hardness of cold roll is 92-94HSD, the tempering temperature in insulating process be 175-185 DEG C and
Tempering insulation time is 18-24h.
When the aimed hardness of cold roll is 94-96HSD, the tempering temperature in insulating process be 150-160 DEG C and
Tempering insulation time is 24-32h.
When the aimed hardness of cold roll is 96-98HSD, the tempering temperature in insulating process be 125-135 DEG C and
Tempering insulation time is 30-40h.
The present invention has the following advantages compared with prior art:
Tempering process of the invention is by the case where obtaining same target hardness, improving tempering and protecting in insulating process
20-30 DEG C of temperature simultaneously shortens tempering insulation time 60-70%, and the residual stress inside roll can be greatly reduced, and reduces and uses
Cracking risk in the process；And the soaking time since heat treatment is greatly shortened, therefore improve equipment service efficiency；The tempering
It is simple for process, therefore be suitable for promoting the use of.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
A kind of tempering process of New Type of Cold Roller, heating, heat preservation and cooling procedure including cold roll routine tempering process,
Wherein the tempering temperature in conventional tempering process is 110-180 DEG C, tempering insulation time is 50-130h and the mesh of cold roll
Mark hardness is 90-98HSD, and tempering temperature follows the increase of cold roll aimed hardness numerical value and reduces and soaking time follows
The increase of cold roll aimed hardness numerical value and increase；In the case where obtaining same target hardness, by the tempering in insulating process
Holding temperature improves 20-30 DEG C and tempering insulation time shortens 60-70%, which enables to residual stress to decrease by
To 18-35%.When the aimed hardness of cold roll is 90-92HSD, the tempering temperature in insulating process be 200-210 DEG C and
Tempering insulation time is 15-20h, so that residual stress decreases by 18-25%；When the aimed hardness of cold roll is 92-94HSD
When, the tempering temperature in insulating process is 175-185 DEG C and tempering insulation time is 18-24h, so that the residual stress range of decrease
Reach 22-27%；When the aimed hardness of cold roll is 94-96HSD, the tempering temperature in insulating process is 150-160 DEG C
And tempering insulation time is 24-32h, so that residual stress decreases by 25-30%；When the aimed hardness of cold roll is 96-
When 98HSD, the tempering temperature in insulating process is 125-135 DEG C and tempering insulation time is 30-40h, so that remnants are answered
Power decreases by 30-35%.
Embodiment one
The cold roll of specification Ф 225 × 1150, technical requirements hardness 90-92HSD, conventional tempering process is room temperature into furnace, with one
Fixed heating rate is heated to 180 DEG C and keeps the temperature 50 hours, then cools to room temperature；New process is room temperature into furnace, with one
Fixed heating rate is heated to 200 DEG C and keeps the temperature 18 hours, then cools to room temperature.New process and conventional tempering process phase
Than, other than tempering temperature and tempering insulation time generate variation, other whole parameter settings and conventional tempering process
It is identical.The tempering temperature of new process increases by 20 DEG C, is conducive to the release of internal stress, residual stress decreases by 18-25%；
Tempering insulation time is greatly shortened in new process, improves production efficiency.
Embodiment two
The cold roll of specification Ф 370 × 1380, technical requirements hardness 92-94HSD, conventional tempering process is room temperature into furnace, with one
Fixed heating rate is heated to 150 DEG C and keeps the temperature 60 hours, then cools to room temperature；New process is room temperature into furnace, with one
Fixed heating rate is heated to 180 DEG C and keeps the temperature 22 hours, then cools to room temperature.New process and conventional tempering process phase
Than, other than tempering temperature and tempering insulation time generate variation, other whole parameter settings and conventional tempering process
It is identical.The tempering temperature of new process increases by 30 DEG C, is conducive to the release of internal stress, residual stress decreases by 22-27%；
Tempering insulation time is greatly shortened in new process, improves production efficiency.
Embodiment three
The cold roll of specification Ф 425 × 1450, technical requirements hardness 94-96HSD, conventional tempering process is room temperature into furnace, with one
Fixed heating rate is heated to 130 DEG C and keeps the temperature 80 hours, then cools to room temperature；New process is room temperature into furnace, with one
Fixed heating rate is heated to 160 DEG C and keeps the temperature 26 hours, then cools to room temperature.New process and conventional tempering process phase
Than, other than tempering temperature and tempering insulation time generate variation, other whole parameter settings and conventional tempering process
It is identical.The tempering temperature of new process increases by 30 DEG C, is conducive to the release of internal stress, residual stress decreases by 25-30%；
Tempering insulation time is greatly shortened in new process, improves production efficiency.
Example IV
The cold roll of specification Ф 550 × 1780, technical requirements hardness 96-98HSD, conventional tempering process is room temperature into furnace, with one
Fixed heating rate is heated to 110 DEG C and keeps the temperature 100 hours, then cools to room temperature；New process is room temperature into furnace, with one
Fixed heating rate is heated to 130 DEG C and keeps the temperature 32 hours, then cools to room temperature.New process and conventional tempering process phase
Than, other than tempering temperature and tempering insulation time generate variation, other whole parameter settings and conventional tempering process
It is identical.The tempering temperature of new process increases by 20 DEG C, is conducive to the release of internal stress, residual stress decreases by 30-35%；
Tempering insulation time is greatly shortened in new process, improves production efficiency.
Tempering process of the invention is by the case where obtaining same target hardness, improving back in insulating process
20-30 DEG C of fiery holding temperature simultaneously shortens tempering insulation time 60-70%, and the residual stress inside roll can be greatly reduced, and reduces
Cracking risk in use process；And the soaking time since heat treatment is greatly shortened, therefore improve equipment service efficiency；It should
Tempering process is simple and easy, therefore is suitable for promoting the use of.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within；The technology that the present invention is not directed to can be realized by the prior art.
Claims (5)
1. a kind of tempering process of New Type of Cold Roller, heating, heat preservation and cooling procedure including cold roll routine tempering process,
Tempering temperature in middle routine tempering process is 110-180 DEG C, tempering insulation time is 50-130h and the target of cold roll
Hardness is 90-98HSD, tempering temperature follow the increase of cold roll aimed hardness numerical value and reduce and tempering insulation time with
Increase with the increase of cold roll aimed hardness numerical value, it is characterised in that: in the case where obtaining same target hardness, kept the temperature
Tempering temperature in journey improves 20-30 DEG C and tempering insulation time shortens 60-70%；The tempering process enables to remnants
Stress decreases by 18-35%.
2. the tempering process of New Type of Cold Roller according to claim 1, it is characterised in that: when the aimed hardness of cold roll is
When 90-92HSD, the tempering temperature in insulating process is 200-210 DEG C and tempering insulation time is 15-20h.
3. the tempering process of New Type of Cold Roller according to claim 1, it is characterised in that: when the aimed hardness of cold roll is
When 92-94HSD, the tempering temperature in insulating process is 175-185 DEG C and tempering insulation time is 18-24h.
4. the tempering process of New Type of Cold Roller according to claim 1, it is characterised in that: when the aimed hardness of cold roll is
When 94-96HSD, the tempering temperature in insulating process is 150-160 DEG C and tempering insulation time is 24-32h.
5. the tempering process of New Type of Cold Roller according to claim 1, it is characterised in that: when the aimed hardness of cold roll is
When 96-98HSD, the tempering temperature in insulating process is 125-135 DEG C and tempering insulation time is 30-40h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505294.8A CN109536696A (en) | 2018-12-10 | 2018-12-10 | A kind of tempering process of New Type of Cold Roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505294.8A CN109536696A (en) | 2018-12-10 | 2018-12-10 | A kind of tempering process of New Type of Cold Roller |
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| CN109536696A true CN109536696A (en) | 2019-03-29 |
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| CN201811505294.8A Pending CN109536696A (en) | 2018-12-10 | 2018-12-10 | A kind of tempering process of New Type of Cold Roller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527792A (en) * | 2019-08-26 | 2019-12-03 | 武汉科技大学 | Reduce the tempering method of residual stress |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2154113C1 (en) * | 1999-12-29 | 2000-08-10 | Ветер Владимир Владимирович | Method of rolls reconditioning |
| 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 |
| CN104032103A (en) * | 2014-05-12 | 2014-09-10 | 宜兴市永昌轧辊有限公司 | Heat treatment method for superdeep-hardening-layer cold roll and quenching equipment employed during heat treatment |
| CN104195450A (en) * | 2014-08-21 | 2014-12-10 | 宜兴市永昌轧辊有限公司 | Heat treatment method of cold-rolled working roll with high wear resistance and roll mark resistance |
| CN105063502A (en) * | 2015-07-25 | 2015-11-18 | 宜兴市永昌轧辊有限公司 | Improved cold roller and preparation method thereof |
| CN106319165A (en) * | 2016-08-30 | 2017-01-11 | 江苏共昌轧辊股份有限公司 | Ultra-temperature short time tempering method for cold roll hardening and tempering |
-
2018
- 2018-12-10 CN CN201811505294.8A patent/CN109536696A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2154113C1 (en) * | 1999-12-29 | 2000-08-10 | Ветер Владимир Владимирович | Method of rolls reconditioning |
| 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 |
| CN104032103A (en) * | 2014-05-12 | 2014-09-10 | 宜兴市永昌轧辊有限公司 | Heat treatment method for superdeep-hardening-layer cold roll and quenching equipment employed during heat treatment |
| CN104195450A (en) * | 2014-08-21 | 2014-12-10 | 宜兴市永昌轧辊有限公司 | Heat treatment method of cold-rolled working roll with high wear resistance and roll mark resistance |
| CN105063502A (en) * | 2015-07-25 | 2015-11-18 | 宜兴市永昌轧辊有限公司 | Improved cold roller and preparation method thereof |
| CN106319165A (en) * | 2016-08-30 | 2017-01-11 | 江苏共昌轧辊股份有限公司 | Ultra-temperature short time tempering method for cold roll hardening and tempering |
Non-Patent Citations (1)
| Title |
|---|
| 东北重型机械学院第一重型机器厂第一机械工业部情报所: "《大锻件热处理》", 31 October 1974 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527792A (en) * | 2019-08-26 | 2019-12-03 | 武汉科技大学 | Reduce the tempering method of residual stress |
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Application publication date: 20190329 |
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