CN106555131A - A kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method - Google Patents

A kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method Download PDF

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CN106555131A
CN106555131A CN201611096353.1A CN201611096353A CN106555131A CN 106555131 A CN106555131 A CN 106555131A CN 201611096353 A CN201611096353 A CN 201611096353A CN 106555131 A CN106555131 A CN 106555131A
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steel
temperature
incubated
high carbon
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CN106555131B (en
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马飞
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China National Academy Of Machinery Group Qingdao Branch Co ltd
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Mechanical Science Research Institute (qingdao Branch)
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/28—Normalising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
    • C23C8/64—Carburising
    • C23C8/66—Carburising of ferrous surfaces

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  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Sliding-Contact Bearings (AREA)
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Abstract

The invention discloses a kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel includes the raw material of following percentage by weight：C：1.5% 2.5%；Mn：0.6% 1.2%；V：0.01% 0.1%；B：0.1% 1.0%；Be：0.1% 0.24%；Ni：0.2% 1.8%；Si：1.2% 1.8%；Ti：0.4% 0.8%；W：0.05% 0.08%；Cr：2.5% 4.5%；Al：0.12% 0.16%；Re：0.05% 0.16%；Balance of Fe；Heat treatment method is comprised the following steps：S1, annealing：Steel are incubated 3 7h at 780 820 DEG C, and temperature is cooled to 700 760 DEG C with the speed of 20 40 DEG C/h, be incubated 1 2h, temperature is cooled to 550 650 DEG C with the speed of 10 30 DEG C/h, air cooling of coming out of the stove after 1 2h of insulation；S2, normalizing：Temperature in stove is risen to into 900 980 DEG C, steel are put into, 2 3h are incubated, disperses air cooling.The heat treatment method of the present invention can ensure that bearing steel under conditions of hardness is not reduced, and toughness is improved, and its contact fatigue life is significantly improved.

Description

A kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method
Technical field
The present invention relates to bearing steel technical field, more particularly to a kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method.
Background technology
Bearing steel is the steel for manufacturing ball, roller and bearing ring.Bearing steel has a height and uniform hardness and wear-resisting Property, and high elastic limit.The content of uniformity, non-metallic inclusion to the chemical composition of bearing steel and distribution, carbonization Distribution of thing etc. is required all very strictly, is to require one of most stringent of steel grade during all iron and steel are produced.
The physical property of bearing steel is mainly based on inspection microstructure decarburized layer, non-metallic inclusion, macrostructure. Generally delivered goods with hot-roll annealing, cold drawn annealing.The condition of delivery should be indicated in contract.The macrostructure of steel is necessary Without shrinkage cavity, rimhole, white point and microscopic pores.Center porosity, General Loosen must not exceed 1.5 grades, and segregation must not exceed 2 Level.The annealed structure of steel should be equally distributed acinous pearlite.Decarburized layer deepness, non-metallic inclusion and carbide are not The uniformity should meet corresponding the countries concerned's standard regulation.
The matrix strength of bearing steel, hardness can extend bearing steel rolling contact fatigue life, and current bullet train, The field such as great wind-power units and Precision Machining is required for the bearing steel of higher performance, existing bearing steel intensity, Hardness and fire-resistance softening power need to be improved, and a kind of Super High Carbon profile shaft is we have proposed for this and holds Heat-Treatment of Steel method, use To solve the above problems.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes a kind of Super High Carbon profile shaft and holds Heat-Treatment of Steel side Method.
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the Super High Carbon type bearing steel into subpackage Include the raw material of following percentage by weight：C：1.5%-2.5%；Mn：0.6%-1.2%；V：0.01%-0.1%；B：0.1%- 1.0%；Be：0.1%-0.24%；Ni：0.2%-1.8%；Si：1.2%-1.8%；Ti：0.4%-0.8%；W：0.05%- 0.08%；Cr：2.5%-4.5%；Al：0.12%-0.16%；Re：0.05%-0.16%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel are incubated 3-7h at 780-820 DEG C, and temperature is cooled to 700-760 DEG C with the speed of 20-40 DEG C/h, are incubated Temperature is cooled to 550-650 DEG C with the speed of 10-30 DEG C/h by 1-2h, air cooling of coming out of the stove after insulation 1-2h；
S2, normalizing：Temperature in stove is risen to into 900-980 DEG C, steel are put into, 2-3h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, are transferred to anti-at a temperature of 800-850 DEG C after being incubated 18-22min Stove is penetrated, the BaCO of 4-7% is chosen3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of by steel Take out, cool down in 160-200 DEG C of oil of quenching rapidly, take out when steel temperature is down to 200-250 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 10-20min is incubated at a temperature of 830-840 DEG C, steel is then taken out Material is quenched；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 150-190 DEG C, be incubated 1-3h, can be completed after taking-up Bearing Heat-Treatment of Steel.
Preferably, the composition of the Super High Carbon type bearing steel includes the raw material of following percentage by weight：C：1.7%- 2.0%；Mn：0.8%-1.0%；V：0.05%-0.07%；B：0.5%-0.8%；Be：0.14%-0.2%；Ni：0.6%- 1.4%；Si：1.4%-1.6%；Ti：0.5%-0.7%；W：0.06%-0.07%；Cr：3%-4%；Al：0.13%- 0.15%；Re：0.07%-0.14%；Balance of Fe.
Preferably, the composition of the Super High Carbon type bearing steel includes the raw material of following percentage by weight：C：1.8%；Mn： 0.9%；V：0.06%；B：0.7%；Be：0.18%；Ni：0.9%；Si：1.5%；Ti：0.6%；W：0.065%；Cr： 3.5%；Al：0.14%；Re：0.09%；Balance of Fe.
Preferably, in the S1, steel are incubated 5h at 800 DEG C, and temperature is cooled to 730 DEG C with the speed of 30 DEG C/h, are incubated Temperature is cooled to 600 DEG C with the speed of 20 DEG C/h by 1.5h, air cooling of coming out of the stove after insulation 1.5h.
Preferably, in the S3, steel are placed in middle thermohaline liquid furnace, are transferred to anti-at a temperature of 825 DEG C after being incubated 20min Stove is penetrated, 6% BaCO is chosen3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken Go out, cool down in 180 DEG C of oil of quenching rapidly, take out when steel temperature is down to 225 DEG C, subsequent air cooling.
Preferably, in the S4, oil is machine oil, bobbin oil, transformer oil or diesel oil.
In the present invention, annealing is the conditioning treatment technique commonly used in production, is that steel is heated to proper temperature, insulation one Fix time, then Slow cooling, be close to the Technology for Heating Processing of statenchyma to obtain, its objective is to eliminate or reduces casting, forge and The internal stress of weldment and the structural heterogenity of chemical composition；The quenching of bearing steel and tempering are critically important in Technology for Heating Processing , application operation widely, quenching can significantly improve the intensity and hardness of steel, if being equipped with the tempering of different temperatures again, Quenching internal stress can be eliminated or be mitigated, the cooperation of intensity, hardness and toughness can be obtained again, different requirements are met, in annealing During, lowered the temperature using stairway degression mode, be conducive to preferably obtaining statenchyma, carried out secondary quenching afterwards, sternly The temperature and time of lattice control process, and carry out pack carburizing process, it is ensured that the combination property of bearing steel, improve bearing steel Service life, the present invention heat treatment method can ensure that bearing steel under conditions of hardness is not reduced, toughness is improved, And its contact fatigue life is significantly improved.
Specific embodiment
The present invention is further explained with reference to specific embodiment.
Embodiment one
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel include with The raw material of lower percentage by weight：C：1.5%；Mn：0.6%；V：0.01%；B：0.1%；Be：0.1%；Ni：0.2%；Si： 1.2%；Ti：0.4%；W：0.05%；Cr：2.5%；Al：0.12%；Re：0.05%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel are incubated 3h at 780 DEG C, and temperature is cooled to 700 DEG C with the speed of 20 DEG C/h, are incubated 1h, by temperature with 10 DEG C/speed of h is cooled to 550 DEG C, air cooling of coming out of the stove after insulation 1h；
S2, normalizing：Temperature in stove is risen to into 900 DEG C, steel are put into, 2h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, select at a temperature of 800 DEG C after being incubated 18min Take 4% BaCO3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken out, rapidly Quench, take out when steel temperature is down to 200 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 10min is incubated at a temperature of 830 DEG C, then take out steel quench into Cool down in 160 DEG C of oil；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 150 DEG C, be incubated 1h, after taking-up, bearing steel can be completed Heat treatment.
Embodiment two
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel include with The raw material of lower percentage by weight：C：1.7%；Mn：0.8%；V：0.05%；B：0.5%；Be：0.14%；Ni：0.6%；Si： 1.4%；Ti：0.5%；W：0.06%；Cr：3%；Al：0.13%；Re：0.07%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel 790 DEG C be incubated 4h, temperature is cooled to into 710 DEG C with the speed of 25 DEG C/h, be incubated 1.2h, by temperature with The speed of 15 DEG C/h is cooled to 570 DEG C, air cooling of coming out of the stove after insulation 1.2h；
S2, normalizing：Temperature in stove is risen to into 920 DEG C, steel are put into, 2.2h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, select at a temperature of 810 DEG C after being incubated 19min Take 5% BaCO3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken out, rapidly Quench, take out when steel temperature is down to 210 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 12min is incubated at a temperature of 832 DEG C, then take out steel quench into Cool down in 165 DEG C of oil；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 160 DEG C, be incubated 1.5h, after taking-up, bearing can be completed Heat-Treatment of Steel.
Embodiment three
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel include with The raw material of lower percentage by weight：C：1.8%；Mn：0.9%；V：0.06%；B：0.7%；Be：0.18%；Ni：0.9%；Si： 1.5%；Ti：0.6%；W：0.065%；Cr：3.5%；Al：0.14%；Re：0.09%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel 800 DEG C be incubated 5h, temperature is cooled to into 730 DEG C with the speed of 30 DEG C/h, be incubated 1.5h, by temperature with The speed of 15 DEG C/h is cooled to 575 DEG C, air cooling of coming out of the stove after insulation 1.5h；
S2, normalizing：Temperature in stove is risen to into 940 DEG C, steel are put into, 2.5h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, select at a temperature of 825 DEG C after being incubated 20min Take 6% BaCO3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken out, rapidly Quench, take out when steel temperature is down to 225 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 15min is incubated at a temperature of 835 DEG C, then take out steel quench into Cool down in 170 DEG C of oil；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 170 DEG C, be incubated 2h, after taking-up, bearing steel can be completed Heat treatment.
Example IV
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel include with The raw material of lower percentage by weight：C：2.0%；Mn：1.0%；V：0.07%；B：0.8%；Be：0.2%；Ni：1.4%；Si： 1.6%；Ti：0.7%；W：0.07%；Cr：4%；Al：0.15%；Re：0.14%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel 810 DEG C be incubated 6h, temperature is cooled to into 750 DEG C with the speed of 35 DEG C/h, be incubated 1.8h, by temperature with The speed of 25 DEG C/h is cooled to 625 DEG C, air cooling of coming out of the stove after insulation 1.8h；
S2, normalizing：Temperature in stove is risen to into 960 DEG C, steel are put into, 2.8h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, select at a temperature of 840 DEG C after being incubated 20min Take 7% BaCO3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken out, rapidly Quench, take out when steel temperature is down to 240 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 18min is incubated at a temperature of 838 DEG C, then take out steel quench into Cool down in 175 DEG C of oil；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 180 DEG C, be incubated 2.5h, after taking-up, bearing can be completed Heat-Treatment of Steel.
Embodiment five
A kind of Super High Carbon profile shaft proposed by the present invention holds Heat-Treatment of Steel method, the composition of the Super High Carbon type bearing steel include with The raw material of lower percentage by weight：C：2.5%；Mn：1.2%；V：0.1%；B：1.0%；Be：0.24%；Ni：1.8%；Si： 1.8%；Ti：0.8%；W：0.08%；Cr：4.5%；Al：0.16%；Re：0.16%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel are incubated 7h at 820 DEG C, and temperature is cooled to 760 DEG C with the speed of 40 DEG C/h, are incubated 2h, by temperature with 30 DEG C/speed of h is cooled to 650 DEG C, air cooling of coming out of the stove after insulation 2h；
S2, normalizing：Temperature in stove is risen to into 980 DEG C, steel are put into, 3h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, select at a temperature of 850 DEG C after being incubated 22min Take 7% BaCO3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of steel are taken out, rapidly Quench, take out when steel temperature is down to 250 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 20min is incubated at a temperature of 840 DEG C, then take out steel quench into Cool down in 180 DEG C of oil；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 190 DEG C, be incubated 3h, after taking-up, bearing steel can be completed Heat treatment.
In order to check the mechanical property of the bearing steel of the present invention, embodiment 1-5 in the present invention is detected respectively by experiment Common bearing steel on bearing steel, and scrutineer market, as a result such as following table：
Group HRC Impulsive force/J
Embodiment one 63.1 9.8
Embodiment two 62.8 10.2
Embodiment three 64.9 11.4
Example IV 64.1 10.4
Embodiment five 63.5 9.9
Plain bearing steel 52.1 5.4
As seen from the above table, heat treatment method of the invention can ensure that bearing steel under conditions of hardness is not reduced, and toughness is obtained Improve, and its contact fatigue life is significantly improved.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, should all be included within the scope of the present invention.

Claims (6)

1. a kind of Super High Carbon profile shaft holds Heat-Treatment of Steel method, it is characterised in that the composition of the Super High Carbon type bearing steel includes The raw material of following percentage by weight：C：1.5%-2.5%；Mn：0.6%-1.2%；V：0.01%-0.1%；B：0.1%- 1.0%；Be：0.1%-0.24%；Ni：0.2%-1.8%；Si：1.2%-1.8%；Ti：0.4%-0.8%；W：0.05%- 0.08%；Cr：2.5%-4.5%；Al：0.12%-0.16%；Re：0.05%-0.16%；Balance of Fe；
Heat treatment method is comprised the following steps：
S1, annealing：Steel are incubated 3-7h at 780-820 DEG C, and temperature is cooled to 700-760 DEG C with the speed of 20-40 DEG C/h, are incubated Temperature is cooled to 550-650 DEG C with the speed of 10-30 DEG C/h by 1-2h, air cooling of coming out of the stove after insulation 1-2h；
S2, normalizing：Temperature in stove is risen to into 900-980 DEG C, steel are put into, 2-3h is incubated, disperses air cooling；
S3, primary quenching：Steel are placed in middle thermohaline liquid furnace, are transferred to anti-at a temperature of 800-850 DEG C after being incubated 18-22min Stove is penetrated, the BaCO of 4-7% is chosen3As energizer, carry out pack carburizing, strictly control temperature uniformity, after the completion of by steel Take out, cool down in 160-200 DEG C of oil of quenching rapidly, take out when steel temperature is down to 200-250 DEG C, subsequent air cooling；
S4, secondary quenching：The steel of S3 are placed in into refining furnace, 10-20min is incubated at a temperature of 830-840 DEG C, steel is then taken out Material is quenched；
S5, tempering：Steel are put into into tempering furnace, tempering furnace is warming up to into 150-190 DEG C, be incubated 1-3h, can be completed after taking-up Bearing Heat-Treatment of Steel.
2. a kind of Super High Carbon profile shaft according to claim 1 holds Heat-Treatment of Steel method, it is characterised in that the Super High Carbon The composition of type bearing steel includes the raw material of following percentage by weight：C：1.7%-2.0%；Mn：0.8%-1.0%；V：0.05%- 0.07%；B：0.5%-0.8%；Be：0.14%-0.2%；Ni：0.6%-1.4%；Si：1.4%-1.6%；Ti：0.5%- 0.7%；W：0.06%-0.07%；Cr：3%-4%；Al：0.13%-0.15%；Re：0.07%-0.14%；Balance of Fe.
3. a kind of Super High Carbon profile shaft according to claim 1 holds Heat-Treatment of Steel method, it is characterised in that the Super High Carbon The composition of type bearing steel includes the raw material of following percentage by weight：C：1.8%；Mn：0.9%；V：0.06%；B：0.7%；Be： 0.18%；Ni：0.9%；Si：1.5%；Ti：0.6%；W：0.065%；Cr：3.5%；Al：0.14%；Re：0.09%；Surplus For Fe.
4. a kind of Super High Carbon profile shaft according to claim 1 holds Heat-Treatment of Steel method, it is characterised in that in the S1, Steel are incubated 5h at 800 DEG C, and temperature is cooled to 730 DEG C with the speed of 30 DEG C/h, are incubated 1.5h, by temperature with the speed of 20 DEG C/h It is cooled to 600 DEG C, air cooling of coming out of the stove after insulation 1.5h.
5. a kind of Super High Carbon profile shaft according to claim 1 holds Heat-Treatment of Steel method, it is characterised in that in the S3, Steel are placed in middle thermohaline liquid furnace, be transferred to reverberatory furnace, choose 6% BaCO at a temperature of 825 DEG C after being incubated 20min3As Energizer, carries out pack carburizing, strictly controls temperature uniformity, after the completion of steel are taken out, it is cold in 180 DEG C of oil of quenching rapidly But, take out when steel temperature is down to 225 DEG C, subsequent air cooling.
6. a kind of Super High Carbon profile shaft according to claim 1 holds Heat-Treatment of Steel method, it is characterised in that in the S4, Oil is machine oil, bobbin oil, transformer oil or diesel oil.
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Publication number Priority date Publication date Assignee Title
WO2018107316A1 (en) * 2016-12-12 2018-06-21 马飞 Heat treatment method for ultra-high-carbon bearing steel
CN108277451A (en) * 2018-01-23 2018-07-13 合肥康之恒机械科技有限公司 A kind of GCr15 profile shafts hold Heat-Treatment of Steel technique
CN108866442A (en) * 2018-07-19 2018-11-23 湖南长高新材料股份有限公司 The heat treatment method and product of superhigh carbon steel
CN111593179A (en) * 2020-06-03 2020-08-28 江苏联峰实业有限公司 Heating method of bearing steel continuous casting billet

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CN106011679A (en) * 2016-05-25 2016-10-12 镇江市经纬工程机械有限公司 Preparing method of bearing
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DE1458400A1 (en) * 1961-03-11 1968-12-19 Ishikawajima Harima Heavy Ind Steel for high temperature cementation
JP2007197784A (en) * 2006-01-27 2007-08-09 Daido Steel Co Ltd Alloy steel
JP2009001910A (en) * 2008-08-04 2009-01-08 Komatsu Ltd High-hardness, high-toughness steel
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107316A1 (en) * 2016-12-12 2018-06-21 马飞 Heat treatment method for ultra-high-carbon bearing steel
CN108277451A (en) * 2018-01-23 2018-07-13 合肥康之恒机械科技有限公司 A kind of GCr15 profile shafts hold Heat-Treatment of Steel technique
CN108866442A (en) * 2018-07-19 2018-11-23 湖南长高新材料股份有限公司 The heat treatment method and product of superhigh carbon steel
CN108866442B (en) * 2018-07-19 2020-04-10 湖南长高新材料股份有限公司 Heat treatment method for ultra-high carbon steel and product
CN111593179A (en) * 2020-06-03 2020-08-28 江苏联峰实业有限公司 Heating method of bearing steel continuous casting billet

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