CN109468451A - A kind of heat treatment method of 55NiCrMoV7 roller roller - Google Patents
A kind of heat treatment method of 55NiCrMoV7 roller roller Download PDFInfo
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- CN109468451A CN109468451A CN201811519239.4A CN201811519239A CN109468451A CN 109468451 A CN109468451 A CN 109468451A CN 201811519239 A CN201811519239 A CN 201811519239A CN 109468451 A CN109468451 A CN 109468451A
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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
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
-
- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- 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 present invention relates to a kind of heat treatment methods of 55NiCrMoV7 roller roller, belong to roll technical field of heat treatment.Comprise the following steps that, 1), induction preheating: roll is subjected to induction heating in quenching machine, is heated to 500~700 DEG C of entire bodies of roll and preheats finish；2), induction heating: being heated to 840~940 DEG C of abundant austenitizings for the roll after preheating, heat preservation；3) it, is pre-chilled: roll is cooled to 760~810 DEG C in advance；4), water is cooling: the roll after pre-cooling is carried out water cooling to 40~110 DEG C；5), average tempering: being heated to 350~450 DEG C for roll, keeps the temperature 15~25h, air-cooled.The roller roller wearability in use of heat treatment method production of the invention is good, resists accident raising, and corrosion resistance is high, and service life extends, and use cost reduces, and comprehensive service performance is good.Low energy consumption by the present invention, and production cost is low.
Description
Technical field
The present invention relates to a kind of heat treatment methods of 55NiCrMoV7 roller roller, belong to roll technical field of heat treatment.
Background technique
As steel mill's continuous casting and rolling and Wide and Thick Slab production project are increasing, skill is manufactured to the roller roller of large-scale over-long roller
Art proposes requirements at the higher level.Roller roller milling train in steel-making continuous casting production needs 48, and consumption is high, service life and quality
Raising product quality and production capacity are directly affected.In high speed load operation, roller roller is contacted with high temperature slab, oxygen
Change and the solid particles such as oxide skin lead to roll surface wearing, needs to shut down and unload roller and repaired, in addition, the rolling under heavy load
Under contact fatigue and the big duty cycle stress of high-frequency, induces fatigue crack and constantly extend extension, eventually lead to part
It peels off or seriously peels off, it can not normal use.
For wearability, the antifatigue and crack resistance for improving roll surface, roll surface service life is improved, roller roller material is selected now
With 55NiCrMoV7 hot die steel, and hardness of roll body HRC46-52 is required, hardened depth 10mm, it is also necessary in roll neck end face
It is cooling to be distributed multiple wire holes.
Traditionally, 55NiCrMoV7 hot-work die steel part takes integral quenching, and body of roll roll neck quenches together, but quenches
Roll neck end face wire hole should not process after fire；If integral quenching wire hole can deform or crack after first carrying out drilling and tapping, roller-way is influenced
Roller precision.And the chill degree of oil is low when integral heating quenching, pollutes environment, greasy dirt needs to clear up, and labor intensity of operating staff is big, quenches
Kerosene generates fire hazard.
Summary of the invention
The object of the present invention is to provide a kind of heat treatment methods of 55NiCrMoV7 roller roller, ask to solve above-mentioned technology
Topic, is improved the wearability of roller roller, service performance, and production easy to process.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of heat treatment method of 55NiCrMoV7 roller roller, comprises the following steps that,
1), induction preheating: roll is subjected to induction heating in quenching machine, 500~700 DEG C of entire bodies of roll is heated to and has preheated
Finish；
2), induction heating: being heated to 840~940 DEG C of abundant austenitizings for the roll after preheating, heat preservation；
3) it, is pre-chilled: roll is cooled to 760~810 DEG C in advance；
4), water is cooling: the roll after pre-cooling is carried out water cooling to 40~110 DEG C；
5), average tempering: being heated to 300~480 DEG C for roll, keeps the temperature 15~25h, air-cooled.
Technical solution of the present invention further improvement lies in that: be in step 1 and step 2 by roll on intermediate-frequency quenching machine tool
It is heated, induction frequencies 200-1000Hz.
Technical solution of the present invention further improvement lies in that: roll is cooled down using water jet in step 4, water jet
60~160m of hydraulic pressure 4~6mpa water3/h。
Technical solution of the present invention further improvement lies in that: the pre-cooling in step 3 is cooling in air.
Technical solution of the present invention further improvement lies in that: in the tempering of step 5 use heated-air circulation tempering furnace.
Technical solution of the present invention further improvement lies in that: it is fast using operation in 30~100mm/ minute in step 1 and step 2
Degree carries out circulation induction preheating and induction heating to the body of roll of roll.
Technical solution of the present invention further improvement lies in that: soaking time in step 2 is 3~8min.
By adopting the above-described technical solution, the technical effect that the present invention obtains has:
Induction preheating is first carried out in the present invention and carries out induction heating again, it can be ensured that the abundant, uniform of roller roller induction heating
With it is consistent, to guarantee roller roller depth of hardening zone and uniformity of hardness.
The present invention can control the heating position of the body of roll using Induction Hardening Machine, and induction can be controlled in quenching process
Quenching machine, which is reduced, influences the quenching of the roll neck end face of roller roller, especially suitable convenient for carrying out wire hole processing in roll neck end face
Together in the overall processing production of roller roller.
Cooling procedure in the present invention can prevent the roller using the pre-cooling in air and by the way of water cooling combines
Road roller is cracked, reduces the generation of stress, improves the yield rate and product quality of product.
Process for quenching of the invention carries out tempering using heated-air circulation tempering furnace, can be improved heating efficiency and improves heat
The utilization rate of amount.
The roller roller wearability in use of heat treatment method production of the invention is good, resists accident raising, corrosion-resistant
Property it is high, service life extends, and use cost reduces, and comprehensive service performance is good.
Specific embodiment
The present invention is described in further details combined with specific embodiments below:
The invention discloses a kind of heat treatment method of 55NiCrMoV7 roller roller, the material of the roller roller is to select
55NiCrMoV7 hot die steel, while process for quenching is devised to make it meet service performance.Here is specific embodiment:
A kind of heat treatment method of 55NiCrMoV7 roller roller, comprises the following steps that,
1), induction preheating: roll is subjected to induction heating in quenching machine, 500~700 DEG C of entire bodies of roll is heated to and has preheated
Finish；Quenching machine used in the step is that intermediate-frequency quenching machine tool is done past using the 30~100mm/ minutes speeds of service along the body of roll
Linear motion carries out circulation induction preheating, induction frequencies 200-1000Hz to the body of roll of roll.
2), induction heating: being heated to 840~940 DEG C of abundant austenitizings for the roll after preheating, keep the temperature a period of time,
Specific soaking time is 3~8min.Induction heating is carried out on the intermediate-frequency quenching machine tool of the step still in the first step, is used
30~100mm/ minutes the speeds of service, do linear reciprocating motion along the body of roll, carry out circulation induction heating to the body of roll of roll, induction
Frequency is 200-1000Hz.
3) it, is pre-chilled: roll is cooled to 760~810 DEG C in advance；Pre-cooling usually cools down in air.
4), water is cooling: the roll after pre-cooling is carried out water cooling to 40~110 DEG C；The step particularly uses water jet
Roll is cooled down, 60~160m of water jet hydraulic pressure 4~6mpa water3/h。
5), average tempering: being heated to 300~480 DEG C for roll, keeps the temperature 15~25h, air-cooled.At tempering in the step
Reason uses heated-air circulation tempering furnace.
Car type furnace is replaced using Induction Hardening Machine heating in the present invention, body of roll impewdance matching heating speed is fast, by water cooling
It is cold instead of quenching oil, and be tempered stable in quenching quality can be ensured using average tempering, roller roller quenching stress reduces, and uses
Performance improves, and reaches energy-saving and emission-reduction requirement.
The present invention can control the heating position of the body of roll using Induction Hardening Machine, and induction can be controlled in quenching process
Quenching machine, which is reduced, influences the quenching of the roll neck end face of roller roller, convenient for carrying out wire hole processing in roll neck end face.
The present invention is directed to the material characteristic of 55NiCrMoV7, in conjunction with roller roller for roll surface wearability, it is antifatigue and
The performance requirement of crack resistance devises process for quenching, the design of the technological parameter of heating temperature and soaking time therein, energy
Enough guarantee that the material of 55NiCrMoV7 reaches the requirement of roller roller.The design of induction preheating and induction heating in the present invention
It can guarantee the abundant, uniform consistent of roller roller heating.Cooling procedure in the present invention use pre-cooling in air and
The mode that water cooling combines can prevent the roller roller cracked, reduce the generation of stress, improve product quality.
In the present invention during induction heating, the design of induction coil heating speed and induction frequencies can guarantee will not
Excessively heating occurs to roller roller to cause to damage, while also can ensure that and can be heated to roll in defined right times
Assigned temperature.When selecting induction coil heating speed and induction frequencies, the bigger induction coil heating speed of the diameter of roller roller
It spends slower, it is ensured that roller roller body of roll certain depth can be heated；Induction frequencies are smaller to be prevented from overheating.
Embodiment 1
55NiCrMoV7 roller-way roller diameter is 273mm, length 500mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 75mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating, induction frequencies 750Hz to the body of roll of roll.
Induction preheating is heated to 500 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 75mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out circulation induction heating to the body of roll of roll, induction frequencies are
830Hz.Roll is heated to 850 DEG C of abundant austenitizings, keeps the temperature 6min.
3) it, is pre-chilled: roll is cooled to 780 DEG C in air.
4), water is cooling: the roll after pre-cooling being carried out water-spraying control to the body of roll with water jet, water cooling is to 50 DEG C.Water jet
Hydraulic pressure control is 4mpa, and water control is 60m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 300 DEG C, 15h is kept the temperature, is then air-cooled to room
Temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC49, hardened depth 10mm, firmly
Degree uniformity and deflection etc. have reached design requirement.Detection metallographic structure is normal, and quenching stress is compression, meets use and wants
It asks.
Embodiment 2
55NiCrMoV7 roller-way roller diameter is 205mm, length 600mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 55mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating, induction frequencies 530Hz to the body of roll of roll.
Induction preheating is heated to 580 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 52mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out circulation induction preheating to the body of roll of roll, induction frequencies are
560Hz.Roll is heated to 880 DEG C of abundant austenitizings, keeps the temperature 5.5min.
3) it, is pre-chilled: roll is cooled to 765 DEG C in air.
4), water is cooling: by the roll after pre-cooling with water jet to water-spraying control is carried out, water cooling is to 65 DEG C.Water jet hydraulic pressure
Control is 4.5mpa, and water control is 78m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 396 DEG C, 18.5h is kept the temperature, is then air-cooled to
Room temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC49, hardened depth 11mm, firmly
Degree uniformity and deflection etc. have reached design requirement.Detection metallographic structure is normal, and quenching stress is compression, meets use and wants
It asks.
Embodiment 3
55NiCrMoV7 roller-way roller diameter is 255mm, length 1000mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 30mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating, induction frequencies 200Hz to the body of roll of roll.
Induction preheating is heated to 700 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 30mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out circulation induction preheating to the body of roll of roll, induction frequencies are
200Hz.Roll is heated to 940 DEG C of abundant austenitizings, keeps the temperature 4.5min.
3) it, is pre-chilled: roll is cooled to 810 DEG C in air.
4), water is cooling: the roll after pre-cooling being carried out water-spraying control to the body of roll with water jet, water cooling is to 110 DEG C.Water jet
Hydraulic pressure control is 6mpa, and water control is 160m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 425 DEG C, 25h is kept the temperature, is then air-cooled to room
Temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC50, hardened depth 10.6mm,
Also deflection etc. has reached design requirement to uniformity of hardness.Detection metallographic structure is normal, and quenching stress is compression, meets use
It is required that.
Embodiment 4
55NiCrMoV7 roller-way roller diameter is 155mm, length 800mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 35mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating, induction frequencies 230Hz to the body of roll of roll.
Induction preheating is heated to 680 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 30mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out induction heating, induction frequencies 260Hz to the body of roll of roll.It will
Roll is heated to 920 DEG C of abundant austenitizings, keeps the temperature 5.5min.
3) it, is pre-chilled: roll is cooled to 795 DEG C in air.
4), water is cooling: by the roll after pre-cooling with water jet to water-spraying control is carried out, water cooling is to 100 DEG C.Water jet hydraulic pressure
Control is 4.5mpa, and water control is 150m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 450 DEG C, 23.5h is kept the temperature, is then air-cooled to
Room temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC46, hardened depth 12.3mm,
Also deflection etc. has reached design requirement to uniformity of hardness.Detection metallographic structure is normal, and quenching stress is compression, meets use
It is required that.
Embodiment 5
55NiCrMoV7 roller-way roller diameter is 303mm, length 650mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 100mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating to the body of roll of roll, induction frequencies are
1000Hz.Induction, which is preheated to, is heated to 680 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 100mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out induction heating, induction frequencies 1000Hz to the body of roll of roll.
Roll is heated to 868 DEG C of abundant austenitizings, keeps the temperature 6min.
3) it, is pre-chilled: roll is cooled to 776 DEG C in air.
4), water is cooling: by the roll after pre-cooling with water jet to water-spraying control is carried out, water cooling is to 40 DEG C.Water jet hydraulic pressure
Control is 5mpa, and water control is 132m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 390 DEG C, 17.5h is kept the temperature, is then air-cooled to
Room temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC50, hardened depth 10.4mm,
Uniformity of hardness and deflection etc. have reached design requirement.Detection metallographic structure is normal, and quenching stress is compression, meets use
It is required that.
Embodiment 6
55NiCrMoV7 roller-way roller diameter is 183mm, length 530mm.Here is the processing step of quenching:
1), induction preheating: roll is subjected to induction heating on intermediate-frequency quenching machine tool, is divided during induction heating using 78mm/
The clock speed of service does linear reciprocating motion along the body of roll, carries out circulation induction preheating, induction frequencies 520Hz to the body of roll of roll.
Induction, which is preheated to, is heated to 840 DEG C, completes the preheating of the entire body of roll.
2) it, induction heating: continues to use intermediate-frequency quenching machine tool and carries out induction heating, 100mm/ is used during induction heating
The minute speed of service, does linear reciprocating motion along the body of roll, carries out induction heating, induction frequencies 1000Hz to the body of roll of roll.
Roll is heated to 868 DEG C of abundant austenitizings, keeps the temperature 6min.
3) it, is pre-chilled: roll is cooled to 776 DEG C in air.
4), water is cooling: by the roll after pre-cooling with water jet to water-spraying control is carried out, water cooling is to 40 DEG C.Water jet hydraulic pressure
Control is 5mpa, and water control is 122m3/h。
5), average tempering: work roll cooling heated-air circulation tempering furnace is heated to 480 DEG C, 17.5h is kept the temperature, is then air-cooled to
Room temperature completes tempering.Entire heat treatment process finishes.
Roll through Overheating Treatment is detected, the body of roll quenching hardness of product is HRC50, hardened depth 10.4mm,
Uniformity of hardness and deflection etc. have reached design requirement.Detection metallographic structure is normal, and quenching stress is compression, meets use
It is required that.
Above-mentioned each roller roller wearability in use is good, resists accident raising, and corrosion resistance is high, and service life extends,
Use cost reduces, and comprehensive service performance is good.
Heat treatment method of the invention, heat treatment operation personnel labor intensity reduce, and save unpack roll neck and cleaning greasy dirt
Working time, can be realized energy-saving and emission-reduction, safety and environmental protection heat treatment.The heat treatment method quality of production is stablized, production efficiency
It improves.Low energy consumption by the present invention, and production cost is low.
The present invention uses novel induction hardening method, stable in quenching quality, and quenching stress reduces, quenching hardness Gao Erjun
It is even, safety simple compared with conventional whole heating operation.
Claims (7)
1. a kind of heat treatment method of 55NiCrMoV7 roller roller, it is characterised in that: it comprises the following steps that,
1), induction preheating: roll is subjected to induction heating in quenching machine, 500~700 DEG C of entire bodies of roll is heated to and has preheated
Finish；
2), induction heating: being heated to 840~940 DEG C of abundant austenitizings for the roll after preheating, heat preservation；
3) it, is pre-chilled: roll is cooled to 760~810 DEG C in advance；
4), water is cooling: the roll after pre-cooling is carried out water cooling to 40~110 DEG C；
5), average tempering: being heated to 300~480 DEG C for roll, keeps the temperature 15~25h, air-cooled.
2. a kind of heat treatment method of 55NiCrMoV7 roller roller according to claim 1, it is characterised in that: step 1 and
It is to heat roll on intermediate-frequency quenching machine tool in step 2, induction frequencies 200-1000Hz.
3. a kind of heat treatment method of 55NiCrMoV7 roller roller according to claim 1, it is characterised in that: in step 4
Roll is cooled down using water jet, 60~160m of water jet hydraulic pressure 4~6mpa water3/h。
4. a kind of heat treatment method of 55NiCrMoV7 roller roller according to claim 1, it is characterised in that: in step 3
Pre-cooling be cooling in air.
5. a kind of heat treatment method of 55NiCrMoV7 roller roller according to claim 1, it is characterised in that: step 5
Heated-air circulation tempering furnace is used in tempering.
6. according to claim 1 or a kind of 2 described in any item heat treatment methods of 55NiCrMoV7 roller roller, feature exist
In: circulation induction preheating and sense were carried out to the body of roll of roll using the 30~100mm/ minutes speeds of service in step 1 and step 2
It should heat.
7. a kind of heat treatment method of 55NiCrMoV7 roller roller according to claim 1, it is characterised in that: in step 2
Soaking time be 3~8min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114164339A (en) * | 2021-12-16 | 2022-03-11 | 河南中原特钢装备制造有限公司 | Production method for reducing heat treatment deformation of roller |
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| CN105543459A (en) * | 2015-12-24 | 2016-05-04 | 湖南力升轧辊有限公司 | Composite quenching method of Cr12MoV roller |
| CN108130403A (en) * | 2017-12-25 | 2018-06-08 | 中钢集团邢台机械轧辊有限公司 | A kind of impewdance matching processing method of Cr12 rolls |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164339A (en) * | 2021-12-16 | 2022-03-11 | 河南中原特钢装备制造有限公司 | Production method for reducing heat treatment deformation of roller |
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