CN103667665A - Differential temperature thermal processing method for high-chromium cast steel centrifugation composite working roll - Google Patents
Differential temperature thermal processing method for high-chromium cast steel centrifugation composite working roll Download PDFInfo
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Abstract
The invention discloses a differential temperature thermal processing method for high-chromium cast steel centrifugation composite working roll. The method orderly comprises the following steps: wrapping a roll neck with an asbestos felt, carrying out a pre-heating treatment just on the roll body; heating the roll body to an austenitizing temperature, while exposing the roll neck in air for cooling; carrying out processes of quenching and tempering on the working roll until the roll hardness reaches a required standard, if the hardness does not meet the requirement, carrying out a supplement tempering process. The method adopts a differential temperature technology so as to avoid the degradation of the ductile iron tissues in the roll neck and the roll body, guarantees the enough hardness of the roll neck, and satisfies the requirements of high hardness, good hardness uniformity, and low hardness degradation on the working layer; furthermore, because the differential temperature thermal treatment only need to heat pat of the roll to a high temperature, energy consumption is prominently reduced, and the thermal treatment cost is reduced.
Description
Technical field
The present invention relates to iron and steel rolling technical field, is mainly a kind of special thermal treatment method of the cast steel with high chromium centrifugal compound working roll about using on hot continuous mill pony roughing mill, Steckel mill pony roughing mill, i.e. differential temperature heat treating method.
Background technology
Roll is one of most important part of milling train, is also the topmost consumption spare part of milling train, and roller performance has directly determined cost, performance and the output of product made from steel.Cast steel with high chromium centrifugal compound working roll is due to advantages such as its good thermotolerance, wear resistance, anti-accidents, mainly as hot continuous mill pony roughing mill, Steckel mill pony roughing mill working roll.For producing high performance cast steel with high chromium working roll, need to pass through the performance that operation, the especially heat treatment steps such as casting, thermal treatment, processing have directly determined cast steel with high chromium working roll.Now widely used heat treatment technics is integral high-temperature quenching+tempering, but there is following problem in this method: 1) high temperature makes roll neck and body of roll core magnesium iron tissue deterioration (roll as shown in Figure 1), cause body of roll high rigidity, roll neck soft to require to guarantee, hardness of roll body homogeneity and working lining hardness are fallen also and cannot be guaranteed; 2) whole intensification, follow at the position that need not heat up needs the position of heating up to heat up together, causes energy consumption large, and thermal treatment cost is high.
Summary of the invention
For addressing the above problem, the invention provides a kind of cast steel with high chromium centrifugal compound working roll differential temperature heat treating method, adopt the body of roll and the heat treated measure of roll neck differential temperature, meet hardness of roll body high, even, the processing requirement that roll neck hardness is low, intensity is high, also can significantly reduce power consumption of polymer processing simultaneously.
For achieving the above object, the present invention takes following technical scheme:
A cast steel with high chromium centrifugal compound working roll differential temperature heat treating method, comprises roll neck and the body of roll is carried out to differential temperature thermal treatment, make hardness of roll body higher than roll neck hardness, hardness of roll body is even.
Preferred a kind of cast steel with high chromium centrifugal compound working roll differential temperature heat treating method, comprises the steps:
1) roll neck of working roll is wrapped up with high temperature resistant asbestos mat;
2) working roll is hung in differential temperature stove, the body of roll is partly heated, is incubated;
3) working roll is hung out from differential temperature stove, be placed on parallels, carry out dry quenching;
4) working roll is turned in the middle low-temp temper furnace hanging with wind circulation, carry out a tempering;
5) the detection hardness of coming out of the stove after a tempering, if meet the technical requirements of working roll, turns lower order processing, if do not met, then supplements tempering, until meet technical requirements.
Specifically, such scheme is refined as following process:
1) roll neck at working roll two ends is wrapped up with high temperature resistant asbestos mat;
2) working roll wrapping is placed in preheating oven and carries out whole preheating, insulation, preheating temperature is lower than austenite transformation temperature, and soaking time is 15-35 hour;
3) after preheating, insulation finish, working roll is hung in differential temperature stove, keep the roll neck that is wrapped in asbestos mat in as air-cooled condition, only the body of roll is partly heated rapidly, is incubated, Heating temperature reaches complete austenitizing state with the working lining of the body of roll and is as the criterion, be controlled at 0.5-3 hour heat-up time, soaking time is controlled at 1-4 hour;
4) after insulation, still keep the roll neck that is wrapped in asbestos mat in as air-cooled condition, the body of roll is partly lowered the temperature, is incubated, be cooled to 900-1200 ℃, temperature fall time is controlled at 0.5-3 hour, and soaking time is controlled at 0.5-4 hour;
In above-mentioned steps 3), 4) treating processes in, working roll remains rotation;
5) working roll is hung out from differential temperature stove, pad is located on parallels, is placed on the place that air is relatively static and carries out dry quenching, and parallels must be higher than 700mm;
6) when working roll air cooling reaches 350-550 ℃ to body surface temperature, turn in the middle low-temp temper furnace hanging with wind circulation, continue cooling, be incubated 15-30 hour at 450-550 ℃ after, be cooled fast to below martensite point, then carry out a tempering, Tempering temperature is 520-550 ℃;
7) the detection hardness of coming out of the stove after a tempering, if meet the technical requirements of working roll, turns lower order processing, if do not met, then supplements tempering, until meet technical requirements.
The width of the width≤roll neck of described asbestos mat, and start parcel from roll neck root, thickness is 30-100mm.
Described preheating temperature is 650-850 ℃.
To the rapid Heating temperature of body of roll part, be 950-1250 ℃.
Working roll rotating speed is 30-90 °/15 minutes.
Supplementing tempering temperature requires to determine according to temper number detected result and roll technology.
The method is applicable to the working roll that technical requirements is hardness of roll body 70-85HSD, roll neck hardness 35-45HSD, hardness of roll body homogeneity≤5HSD, fall≤4HSD of working lining hardness.
Adopt above technical scheme, the technical progress that the present invention obtains is: the method for comparing conventional complete heat treatment, the present invention adopts the method for differential temperature, avoided the deterioration of roll neck and body of roll core magnesium iron tissue, guarantee the intensity that roller neck is enough, also met working lining high rigidity, preferably uniformity of hardness, lower hardness degradation requirement; In addition, compare complete heat treatment scheme, differential temperature thermal treatment only has part to be raised to high temperature, can significantly reduce energy consumption, reduces thermal treatment cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of working roll, comprises the body of roll 1, roll neck 2, working lining more than 3 parts.
Embodiment
The invention discloses a kind of cast steel with high chromium centrifugal compound working roll special thermal treatment method---differential temperature heat treating method, mainly comprise working roll integral body is carried out to thermal pretreatment, the thermal treatment of body of roll roll neck differential temperature, dry quenching processing, the several steps of temper, concrete operations are sequentially:
1) as shown in Figure 1, first by the high temperature resistant asbestos mat of the roll neck at working roll two ends 2 use (being fire-retardent fiber felt-rug) parcel, the width of the width≤roll neck of asbestos mat, and start parcel from roll neck 2 roots, thickness is 30-100mm;
2) working roll wrapping is placed in preheating oven and carries out whole preheating, then insulation, preheating temperature is 650-850 ℃, soaking time is 15-35 hour;
3) after preheating insulation finishes, working roll is hung in differential temperature stove, keep the roll neck 2 that is wrapped in asbestos mat in as air-cooled condition, only the body of roll 1 part is heated rapidly, is incubated, Heating temperature reaches complete austenitizing state with the working lining 4 of the body of roll and is as the criterion, for cast steel with high chromium, be generally 950-1250 ℃, be controlled at 0.5-3 hour heat-up time, soaking time is controlled at 1-4 hour;
4) after insulation, still keep the roll neck 2 that is wrapped in asbestos mat in as air-cooled condition, the body of roll 1 part is lowered the temperature, is incubated, be cooled to 900-1200 ℃ and start insulation again, temperature fall time is controlled at 0.5-3 hour, and soaking time is controlled at 0.5-4 hour;
In above-mentioned steps 3), 4) treating processes in, working roll guarantee all the time rotation, speed is 30-60 °/15 minutes;
5) working roll is hung out from differential temperature stove, pad is located on parallels, is placed on the place that air is relatively static and carries out dry quenching, and parallels must be higher than 700mm;
6) until working roll air cooling, when reaching 350-550 ℃, body surface temperature finishes air cooling, hang in the middle low-temp temper furnace with wind circulation, be incubated 15-30 hour at 450-550 ℃ after, be cooled fast to below martensite point, then carry out a tempering, Tempering temperature is 520-550 ℃.
In wind circulation, thereby the homogeneity of low-temp temper furnace principal security temperature field in furnace guarantees the homogeneity in working roll temperature field, finally guarantees working roll uniformity of hardness.
7) the detection hardness of coming out of the stove after a tempering, hardness requirement is: hardness of roll body 70-85HSD, roll neck hardness 35-45HSD, hardness of roll body homogeneity≤5HSD, fall≤4HSD of working lining hardness, if hardness is qualified, turn lower order processing, if hardness is defective, supplement again tempering, until meet hardness requirement.Supplementing tempering temperature requires to determine according to temper number detected result and roll technology.
Two specific embodiments below
Heat treating method of the present invention is applied to R77.3 cast steel with high chromium centrifugal compound working roll, and its main component is:
| Composition | Content (%) |
| C | 1.40～2.50 |
| Si | 0.40～1.00 |
| Mn | 0.60～1.40 |
| P | ≤0.10 |
| S | ≤0.02 |
| Cr | 10.00～15.00 |
| Ni | 1.50～2.50 |
| Mo | 1.80～2.80 |
| Fe | All the other |
R77.3 cast steel with high chromium centrifugal compound working roll size and main technical requirements:
| Roll body length | 1680mm | Hardness of roll body | 70-80HSD |
| Roll diameter | 1200mm | Hardness of roll body homogeneity | ≤5HSD |
| Working roll overall length | 4780mm | Roll neck hardness | 35-45HSD |
According to above-mentioned requirements, its concrete heat treatment process is as follows:
1) at the two ends near the body of roll, for roll neck place, high temperature resistant asbestos mat (being fire-retardent fiber felt-rug) parcel one encloses, and the width of asbestos mat is 250mm, and thickness is 50mm, parcel one deck, main purpose is to avoid roll neck to be also heated to comparatively high temps, stops roll neck austenitizing, guarantees roll neck hardness.
2) working roll wrapping is placed on to preheating oven and carries out whole preheating, preheating comprises and heating up and two processes of insulation, and concrete steps are that furnace temperature is elevated to 780 ℃ from room temperature, and furnace temperature maintains 780 ℃ and keep 24 hours;
3) after preheating insulation finishes, working roll is hung to differential temperature stove, utilize the characteristic of differential temperature stove, the working roll body of roll is heated to rapidly to complete austenitizing temperature and is incubated certain hour, make whole working lining reach complete austenitizing temperature, this example operates as follows: differential temperature stove furnace temperature is raised to 1150 ℃ fast, and be 1 hour heat-up time, and 1150 ℃ are incubated 1.5 hours, then from 1150 ℃, drop to 1100 ℃, temperature fall time 0.5 hour, 1100 ℃ are incubated 1 hour, the dry quenching of finally coming out of the stove.
Whole differential heating process, only, to body of roll heating, two ends roll neck does not heat, in as air-cooled condition; Whole differential heating process, working roll is every 60 ° of rotations in 15 minutes.
4) working roll is hung out from differential temperature stove, be placed on relatively airtight space and carry out dry quenching; During dry quenching, working roll space of living in must be that air is relatively static, and working roll parallels height must be higher than 700mm;
5) working roll air cooling finishes air cooling when body surface temperature reaches 460 ℃, hang in the middle low-temp temper furnace with wind circulation, 500 ℃ of insulations were cooled fast to below martensite point after 24 hours, carry out again a tempering, Tempering temperature is 540 ℃, tempering insulation time 50 hours.
6) the detection hardness of coming out of the stove after a tempering, this working roll hardness of roll body 66-70HSD, roll neck hardness 36-41HSD, hardness of roll body homogeneity≤4HSD.Contrast this Working roll technique requirement, hardness of roll body is on the low side, need carry out the i.e. tempering for the second time of 530 ℃ of supplementary tempering, and tempering insulation time is 50 hours for the second time.
7) after tempering finishes for the second time, again detect hardness, now hardness of roll body is 75-78HSD, roll neck hardness 35-41HSD, and hardness of roll body homogeneity≤3HSD, meets this Working roll technique requirement.
Heat treating method of the present invention is applied to R91.1 cast steel with high chromium centrifugal compound working roll, and its main component is:
| Composition | Content (%) |
| C | 1.40～2.50 |
| Si | 0.40～1.00 |
| Mn | 0.60～1.40 |
| P | ≤0.10 |
| S | ≤0.02 |
| Cr | 10.00～15.00 |
| Ni | 1.50～2.50 |
| Mo | 1.80～2.80 |
| Fe | All the other |
R91.1 cast steel with high chromium centrifugal compound working roll size and main technical requirements:
| Roll body length | 1900mm | Hardness of roll body | 70-75HSD |
| Roll diameter | 1220mm | Hardness of roll body homogeneity | ≤4HSD |
| Working roll overall length | 5500mm | Roll neck hardness | 35-45HSD |
According to above-mentioned requirements, its concrete heat treatment process is as follows:
1) at high temperature resistant asbestos mat for roll neck (being fire-retardent fiber felt-rug) parcel one circle near body of roll two ends, the width of asbestos mat is 250mm, and thickness is 50mm, parcel one deck; Main purpose is to avoid roll neck to be also heated to comparatively high temps, stops roll neck austenitizing, guarantees roll neck hardness.
2) working roll wrapping is placed on to preheating oven and carries out whole preheating, preheating comprises and heating up and two processes of insulation, and concrete steps are that furnace temperature is elevated to 780 ℃ from room temperature, and furnace temperature maintains 780 ℃ and keep 24 hours;
3) after preheating insulation finishes, working roll is hung to differential temperature stove, utilize the characteristic of differential temperature stove, the working roll body of roll is heated to rapidly to complete austenitizing temperature and is incubated certain hour, make whole working lining also reach complete austenitizing temperature, this example operates as follows: differential temperature stove furnace temperature is raised to 1130 ℃ fast, and be 1 hour heat-up time, and 1130 ℃ are incubated 1.5 hours, then from 1130 ℃, drop to 1090 ℃, temperature fall time 0.5 hour, 1090 ℃ of soaking times 1 hour, the dry quenching of finally coming out of the stove.
Whole differential heating process, only to body of roll heating, and two ends roll neck does not heat, and in as air-cooled condition, the asbestos mat that is wherein wrapped in two ends roll neck has played heat-blocking action; Whole differential heating process, working roll is every 60 ° of rotations in 15 minutes.
4) roll is hung out from differential temperature stove, be placed on relatively airtight space and carry out dry quenching; During dry quenching, roll space of living in must be that air is relatively static, and roll parallels height must be higher than 700mm;
5) working roll air cooling finishes air cooling when body surface temperature reaches 460 ℃, hang in the middle low-temp temper furnace with wind circulation, 500 ℃ of insulations were cooled fast to below martensite point after 24 hours, carry out again a tempering, Tempering temperature is 530 ℃, tempering insulation time 50 hours.
6) the detection hardness of coming out of the stove after a tempering, this working roll hardness of roll body 71-74HSD, roll neck hardness 35-39HSD, hardness of roll body homogeneity≤3HSD.Contrast this Working roll technique requirement, meet the requirements, can turn lower order processing.
By above-described embodiment, can find out, adopt heat treating method of the present invention, can meet roller body high rigidity 70-85HSD, roll neck soft 35-45HSD, hardness of roll body homogeneity≤5HSD, fall≤4HSD of working lining hardness, prevent roll neck and body of roll core magnesium iron tissue deterioration, reduce the requirement of energy consumption.
Claims (10)
1. a cast steel with high chromium centrifugal compound working roll differential temperature heat treating method, is characterized in that: comprise roll neck and the body of roll are carried out to the heat treated step of differential temperature, make hardness of roll body higher than roll neck hardness, hardness of roll body is even.
2. a cast steel with high chromium centrifugal compound working roll differential temperature heat treating method, is characterized in that, comprises the steps:
1) roll neck of working roll is wrapped up with high temperature resistant asbestos mat;
2) working roll is hung in differential temperature stove, the body of roll is partly heated, is incubated;
3) working roll is hung out from differential temperature stove, hang on parallels, carry out dry quenching;
4) working roll is turned in the middle low-temp temper furnace hanging with wind circulation, carry out a tempering;
5) the detection hardness of coming out of the stove after a tempering, if meet the technical requirements of working roll, turns lower order processing, if do not met, then supplements tempering, until meet technical requirements.
3. cast steel with high chromium centrifugal compound working roll differential temperature heat treating method according to claim 2, it is characterized in that: after step 1, step 2) before, add working roll is put into the step of carrying out whole preheating, insulation in preheating oven, preheating temperature is lower than austenite transformation temperature, and soaking time is 15-35 hour.
4. cast steel with high chromium centrifugal compound working roll differential temperature heat treating method according to claim 2, it is characterized in that: described step 2), the method that the body of roll is partly heated, is incubated is: Heating temperature is to austenitizing temperature 950-1250 ℃, heat-up time 0.5-3 hour, soaking time 1-4 hour; Then the body of roll is partly lowered the temperature, be down to 900-1200 ℃ and start again insulation, cooling used time 0.5-3 hour; Finally be incubated, the time is 0.5-4 hour again.
5. according to the cast steel with high chromium centrifugal compound working roll differential temperature heat treating method described in claim 2 or 4, it is characterized in that: described step 2), when the body of roll is partly heated, is incubated, keep the roll neck part that is wrapped in asbestos mat in as air-cooled condition.
6. according to the cast steel with high chromium centrifugal compound working roll differential temperature heat treating method described in claim 2 or 4, it is characterized in that: described step 2), when the body of roll is partly heated, is incubated, keep working roll all the time in rotating state.
7. cast steel with high chromium centrifugal compound working roll differential temperature heat treating method according to claim 2, is characterized in that: in described step 3), parallels must be higher than 700mm; The environment of dry quenching is that air is relatively static.
8. according to the cast steel with high chromium centrifugal compound working roll differential temperature heat treating method described in claim 2 or 4 or 7, it is characterized in that: described step 3), 4), when dry quenching is arrived 350-550 ℃ to body surface temperature, turn in the middle low-temp temper furnace hanging with wind circulation, in tempering stove, continue cooling, be incubated 15-30 hour at 450-550 ℃ after, be cooled fast to below martensite point, then carry out a tempering, Tempering temperature is 520-550 ℃.
9. cast steel with high chromium centrifugal compound working roll differential temperature heat treating method according to claim 2, is characterized in that: the width of the width≤roll neck of described asbestos mat, and start parcel from roll neck root, thickness is 30-100mm.
10. according to the cast steel with high chromium centrifugal compound working roll differential temperature heat treating method one of claim 1～9 Suo Shu, it is characterized in that: described method is applicable to the working roll that technical requirements is hardness of roll body 70-85HSD, roll neck hardness 35-45HSD, hardness of roll body homogeneity≤5HSD, fall≤4HSD of working lining hardness.
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| CN104087742A (en) * | 2014-06-24 | 2014-10-08 | 河北钢铁股份有限公司唐山分公司 | Differential temperature heat treatment method for centrifugal compound high-chromium steel roller |
| CN104309172A (en) * | 2014-10-22 | 2015-01-28 | 常州泉汇机械制造有限公司 | Surface quenching structure and quenching process of large-diameter cylindrical workpieces |
| CN104313292A (en) * | 2014-09-24 | 2015-01-28 | 江苏共昌轧辊股份有限公司 | Differential temperature heat treatment method of D2 steel centrifugal composite roller |
| CN104561504A (en) * | 2015-01-16 | 2015-04-29 | 唐山钢铁集团有限责任公司 | Heat treatment method for one-piece casting hot-rolled strip supporting roller |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106319A (en) * | 1977-03-11 | 1978-08-15 | Southwire Company | Apparatus for hot-rolling non-ferrous metals |
| JPH05239545A (en) * | 1992-02-29 | 1993-09-17 | Japan Steel Works Ltd:The | Production of working roll for cold rolling |
| CN101215628A (en) * | 2008-01-11 | 2008-07-09 | 北京工业大学 | High speed steel composite roller heat treatment method |
| CN101403032A (en) * | 2008-11-12 | 2009-04-08 | 中国科学院金属研究所 | Thermal treatment process for quick cutting steel composite roll |
| CN102041374A (en) * | 2011-01-19 | 2011-05-04 | 山西百一机械设备制造有限公司 | Differential quenching method for large-diameter whole ledeburitic steel cold roll |
| CN102321795A (en) * | 2011-10-17 | 2012-01-18 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for high ferrochrome roll requiring stepped hardness of roll body |
| CN102352431A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Large-scale high-chrome cast iron roller permissible differential temperature heat treatment |
| CN102634733A (en) * | 2012-04-06 | 2012-08-15 | 北京工业大学 | Composite roll having uniform roll surface hardness and made of high-speed steel containing boron and method for manufacturing composite roll |
| CN103305679A (en) * | 2013-06-24 | 2013-09-18 | 无锡市彩云机械设备有限公司 | Heat treatment method of high-chromium steel composite roll |
-
2013
- 2013-12-06 CN CN201310660866.0A patent/CN103667665B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106319A (en) * | 1977-03-11 | 1978-08-15 | Southwire Company | Apparatus for hot-rolling non-ferrous metals |
| JPH05239545A (en) * | 1992-02-29 | 1993-09-17 | Japan Steel Works Ltd:The | Production of working roll for cold rolling |
| CN101215628A (en) * | 2008-01-11 | 2008-07-09 | 北京工业大学 | High speed steel composite roller heat treatment method |
| CN101403032A (en) * | 2008-11-12 | 2009-04-08 | 中国科学院金属研究所 | Thermal treatment process for quick cutting steel composite roll |
| CN102041374A (en) * | 2011-01-19 | 2011-05-04 | 山西百一机械设备制造有限公司 | Differential quenching method for large-diameter whole ledeburitic steel cold roll |
| CN102321795A (en) * | 2011-10-17 | 2012-01-18 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for high ferrochrome roll requiring stepped hardness of roll body |
| CN102352431A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Large-scale high-chrome cast iron roller permissible differential temperature heat treatment |
| CN102634733A (en) * | 2012-04-06 | 2012-08-15 | 北京工业大学 | Composite roll having uniform roll surface hardness and made of high-speed steel containing boron and method for manufacturing composite roll |
| CN103305679A (en) * | 2013-06-24 | 2013-09-18 | 无锡市彩云机械设备有限公司 | Heat treatment method of high-chromium steel composite roll |
Cited By (13)
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|---|---|---|---|---|
| CN104087742A (en) * | 2014-06-24 | 2014-10-08 | 河北钢铁股份有限公司唐山分公司 | Differential temperature heat treatment method for centrifugal compound high-chromium steel roller |
| CN104313292A (en) * | 2014-09-24 | 2015-01-28 | 江苏共昌轧辊股份有限公司 | Differential temperature heat treatment method of D2 steel centrifugal composite roller |
| CN104309172A (en) * | 2014-10-22 | 2015-01-28 | 常州泉汇机械制造有限公司 | Surface quenching structure and quenching process of large-diameter cylindrical workpieces |
| CN104561504A (en) * | 2015-01-16 | 2015-04-29 | 唐山钢铁集团有限责任公司 | Heat treatment method for one-piece casting hot-rolled strip supporting roller |
| CN106086364A (en) * | 2016-08-11 | 2016-11-09 | 卡斯马汽车***（重庆）有限公司 | Automobile thermoforming parts locally softening method |
| CN106086364B (en) * | 2016-08-11 | 2017-10-24 | 卡斯马汽车***（重庆）有限公司 | Automobile thermoformed part local softening method |
| CN106893812A (en) * | 2016-12-21 | 2017-06-27 | 天津重型装备工程研究有限公司 | A kind of heat treatment method for improving support roll hardness of roll body uniformity |
| CN106893812B (en) * | 2016-12-21 | 2019-02-15 | 天津重型装备工程研究有限公司 | A kind of heat treatment method improving support roll hardness of roll body uniformity |
| CN106636877A (en) * | 2016-12-29 | 2017-05-10 | 常州凯达重工科技有限公司 | High chromium cast iron composite casting section steel product roller and preparation method thereof |
| CN108060296A (en) * | 2017-12-15 | 2018-05-22 | 中钢集团邢台机械轧辊有限公司 | A kind of big concave roll heat treatment method of body of roll roll neck hardness requirement drop |
| CN111136127A (en) * | 2020-01-06 | 2020-05-12 | 无锡亿宝机械设备有限公司 | Tension leveler tension leveling roller and heat treatment process |
| CN112828221A (en) * | 2020-12-31 | 2021-05-25 | 中钢集团邢台机械轧辊有限公司 | Control method for grain size of blank of roller for forging large-sized battery pole piece |
| CN112828221B (en) * | 2020-12-31 | 2023-02-24 | 中钢集团邢台机械轧辊有限公司 | Method for controlling grain size of blank of large-scale battery pole piece roller |
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