CN108504846A - A kind of environmentally friendly heat treatment process of wind power bearing hood assembly - Google Patents
A kind of environmentally friendly heat treatment process of wind power bearing hood assembly Download PDFInfo
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- CN108504846A CN108504846A CN201810283749.XA CN201810283749A CN108504846A CN 108504846 A CN108504846 A CN 108504846A CN 201810283749 A CN201810283749 A CN 201810283749A CN 108504846 A CN108504846 A CN 108504846A
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- temperature
- bearing
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- environmentally friendly
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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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/50—Oil baths
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
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- Chemical & Material Sciences (AREA)
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention provides a kind of environmentally friendly heat treatment process of wind power bearing hood assembly, is related to technical field of heat treatment technology.The environmentally friendly heat treatment process of wind power bearing hood assembly of the present invention can make bearing ring component have higher surface strength, bearing ring assembly surface wearability significantly increases, improve Fracture of Material, effectively improve the service life of bearing ring component, it reduces bearing ring component and is used for a long time caused security risk, the heat treatment process, the size distortion amount of bearing ring component is small after heat treatment, improves the stability of bearing washer.
Description
Technical field
The present invention relates to technical field of heat treatment technology, and in particular to a kind of environmental protection heat treatment work of wind power bearing hood assembly
Skill.
Background technology
Along with the rise of global wind-powered electricity generation industry, wind power bearing is developed rapidly, as wind power bearing load-bearing part,
Steel ball quality increasingly obtains the concern and attention of wind power industry.As is well known, in the guaranteed premise of quality of materials
Under, heat treatment plays decisive action to ball hardness, metallographic, crushing equivalent life index.
Heat treatment is to be placed on metal material in certain medium heat, keep the temperature, is cooling, by changing material surface or interior
The metallurgical structure in portion controls a kind of metal heat processing technique of its performance.Quenching is one of heat treatment process, is
After workpiece heat is kept the temperature, it is quickly cooled down in the quenching medias such as water, oil or other inorganic salts, aqueous organopolysiloxane.The mesh of quenching
Be that overcooling austenite is made to carry out martensite or bainite transformation, obtain martensite or bainite structure, then coordinate with difference
The tempering of temperature, with intensity, hardness, wearability, fatigue strength and the toughness etc. for greatly improving steel, to meet various machineries
The different requirements of part and tool.It is special ferromagnetism, corrosion resistance of certain special steel materials etc. can also to be met by quenching
Physics, chemical property.
Existing heat treatment method is in the anti-fatigue life of wear-resistant material, wearability, corrosion resistance, hardness, impact flexibility
Aspect is difficult to meet the application requirement of numerous industries.Therefore, suitable heat treatment process is selected, for improving the machine of wear-resistant material
Tool wear resistance, saving steel increasingly seem important.
Invention content
In view of the shortcomings of the prior art, the present invention provides a kind of environmentally friendly heat treatment process of wind power bearing hood assembly.
In order to achieve the above object, technical scheme of the present invention is achieved by the following technical programs：
A kind of environmentally friendly heat treatment process of wind power bearing hood assembly, includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 800-900 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1-
1.5h；
S3, quenching：It is 600-750 DEG C that bearing ring component is heated to temperature in stove, keeps the temperature 1.5-3h, takes out bearing ring
Component carries out oil quenching processing, and oily temperature is 220-300 DEG C, and oil cooling is to room temperature after keeping the temperature 1-1.5h；
S4, tempering：By quenched bearing sleeve coil assembly, 20-30min postcoolings are handled under conditions of temperature is 450-550 DEG C
To room temperature, bearing sleeve coil assembly is then subjected to freezing processing, then bearing sleeve coil assembly is placed in temper in tempering furnace, it will be in stove
Temperature be raised to 100-150 DEG C, keep the temperature 20-50min, the temperature in stove then risen to 160-180 DEG C, keep the temperature 20-30min,
The temperature in stove is down to 100-120 DEG C again, keeps the temperature 2-5h, repeats temper 2-4 times；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
Further, the temperature of heat-treatment furnace described in step S2 is 820-850 DEG C.
Further, oil quenching treatment temperature described in step S3 is 260 DEG C, soaking time 1.2h.
Further, it is 670 DEG C that step S3 institutes bearing ring component is heated to temperature in stove, keeps the temperature 2h.
Further, it is by bearing sleeve coil assembly progress freezing processing described in step S4：By bearing sleeve coil assembly in -70 DEG C of environment
Lower heat preservation 2-5h, then returns to room temperature.
Further, temper described in step S4 is carried out in 4-5h after freezing processing.
Further, it is 3 times that tempering number of processes is repeated described in step S4, and the interval time between temper is 30-
40min。
The present invention provides a kind of environmentally friendly heat treatment process of wind power bearing hood assembly, and advantage exists compared with prior art
In：
The environmentally friendly heat treatment process of wind power bearing hood assembly of the present invention can make bearing ring component have higher surface strong
Degree, bearing ring assembly surface wearability significantly increase, and improve Fracture of Material, and effectively improve bearing ring component uses the longevity
Life reduces bearing ring component and is used for a long time caused security risk, the heat treatment process, bearing ring group after heat treatment
The size distortion amount of part is small, improves the stability of bearing washer；
The environmentally friendly heat treatment process of wind power bearing hood assembly of the present invention is finally right by normalizing, quenching, the repeatedly processing such as tempering
Bearing sleeve coil assembly isothermal holding ensures that bearing ring component strength, hardness are improved, and improve bearing sleeve coil assembly wearability and
Anti-fatigue performance, and heat treatment process is easy to operate, the bearing sleeve coil assembly after heat treatment after traditional process relative to holding
Hood assembly has the advantages that intensity is high, with high hardness, and more wear-resisting and antifatigue, performance is improved.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
In embodiment, conventional external refining, conventional vacuum degassing process, GPF (General Protection False casting process, steel billet carry out thermoplastic
Property processing, to be processed into bearing ring component be the prior art to positive pry- rolling ring, be not described herein.
Embodiment 1：
The environmentally friendly heat treatment process of the present embodiment wind power bearing hood assembly includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 800 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1h；
S3, quenching：By bearing ring component be heated in stove temperature be 600 DEG C, keep the temperature 1.5h, take out bearing ring component into
The processing of row oil quenching, oily temperature are 220 DEG C, and oil cooling is to room temperature after keeping the temperature 1h；
S4, tempering：By quenched bearing sleeve coil assembly, under conditions of temperature is 450 DEG C processing 20min postcoolings to room temperature,
Then bearing sleeve coil assembly is subjected to freezing processing（Temper is that 4h is carried out after freezing processing）, then by bearing sleeve coil assembly
It is placed in temper in tempering furnace, the temperature in stove is raised to 100 DEG C, 20min is kept the temperature, the temperature in stove is then risen to 160
DEG C, 20min is kept the temperature, then the temperature in stove is down to 100 DEG C, keeps the temperature 2h, repeat temper 2 times, wherein between temper
Interval time be that 30min freezing processings are：Bearing sleeve coil assembly is kept the temperature into 2h under -70 DEG C of environment, then returns to room temperature；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
Embodiment 2：
The environmentally friendly heat treatment process of the present embodiment wind power bearing hood assembly includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 900 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1.5h；
S3, quenching：It is 750 DEG C that bearing ring component is heated to temperature in stove, keeps the temperature 3h, takes out bearing ring component and carries out
Oil quenching processing, oily temperature are 300 DEG C, and oil cooling is to room temperature after keeping the temperature 1.5h；
S4, tempering：By quenched bearing sleeve coil assembly, under conditions of temperature is 550 DEG C processing 30min postcoolings to room temperature,
Then bearing sleeve coil assembly is subjected to freezing processing（Temper is that 5h is carried out after freezing processing）, then by bearing sleeve coil assembly
It is placed in temper in tempering furnace, the temperature in stove is raised to 150 DEG C, 50min is kept the temperature, the temperature in stove is then risen to 180
DEG C, 30min is kept the temperature, then the temperature in stove is down to 120 DEG C, keeps the temperature 5h, repeat temper 4 times, wherein between temper
Interval time be that 40min freezing processings are：Bearing sleeve coil assembly is kept the temperature into 5h under -70 DEG C of environment, then returns to room temperature；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
Embodiment 3：
The environmentally friendly heat treatment process of the present embodiment wind power bearing hood assembly includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 850 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1.3h；
S3, quenching：It is 670 DEG C that bearing ring component is heated to temperature in stove, keeps the temperature 2h, takes out bearing ring component and carries out
Oil quenching processing, oily temperature are 260 DEG C, and oil cooling is to room temperature after keeping the temperature 1.2h；
S4, tempering：By quenched bearing sleeve coil assembly, 20-30min postcoolings are handled under conditions of temperature is 500 DEG C to room
Then bearing sleeve coil assembly is carried out freezing processing by temperature（Temper is that 4.5h is carried out after freezing processing）, then by bearing sleeve
Coil assembly is placed in temper in tempering furnace, and the temperature in stove is raised to 130 DEG C, 35min is kept the temperature, then by the temperature liter in stove
To 170 DEG C, 25min is kept the temperature, then the temperature in stove is down to 110 DEG C, keep the temperature 3.5h, repeat temper 3 times, wherein tempering
Interval time between processing is 35min, and freezing processing is bearing sleeve coil assembly to be kept the temperature 3.5h under -70 DEG C of environment, then restore
To room temperature；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
Embodiment 4：
The environmentally friendly heat treatment process of the present embodiment wind power bearing hood assembly includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 820 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1.1h；
S3, quenching：By bearing ring component be heated in stove temperature be 630 DEG C, keep the temperature 1.8h, take out bearing ring component into
The processing of row oil quenching, oily temperature are 250 DEG C, and oil cooling is to room temperature after keeping the temperature 1.1h；
S4, tempering：By quenched bearing sleeve coil assembly, under conditions of temperature is 470 DEG C processing 23min postcoolings to room temperature,
Then bearing sleeve coil assembly is subjected to freezing processing（Temper is that 4.3h is carried out after freezing processing）, then by bearing ring group
Part is placed in temper in tempering furnace, and the temperature in stove is raised to 110 DEG C, 30min is kept the temperature, then rises to the temperature in stove
165 DEG C, 23min is kept the temperature, then the temperature in stove is down to 105 DEG C, keep the temperature 3h, repeat temper 3 times, freezing processing is：It will
Bearing sleeve coil assembly keeps the temperature 3h under -70 DEG C of environment, then returns to room temperature；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
Embodiment 5：
The environmentally friendly heat treatment process of the present embodiment wind power bearing hood assembly includes the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 850 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1.4h；
S3, quenching：By bearing ring component be heated in stove temperature be 720 DEG C, keep the temperature 2.5h, take out bearing ring component into
The processing of row oil quenching, oily temperature are 280 DEG C, and oil cooling is to room temperature after keeping the temperature 1.3h；
S4, tempering：By quenched bearing sleeve coil assembly, under conditions of temperature is 520 DEG C processing 27min postcoolings to room temperature,
Then bearing sleeve coil assembly is subjected to freezing processing（Temper is that 4.8h is carried out after freezing processing）, then by bearing ring group
Part is placed in temper in tempering furnace, and the temperature in stove is raised to 140 DEG C, 40min is kept the temperature, then rises to the temperature in stove
175 DEG C, 27min is kept the temperature, then the temperature in stove is down to 115 DEG C, keep the temperature 4h, repeat temper 4 times, freezing processing is：It will
Bearing sleeve coil assembly keeps the temperature 4h under -70 DEG C of environment, then returns to room temperature；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；And
These modifications or replacements, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (7)
1. a kind of environmentally friendly heat treatment process of wind power bearing hood assembly, which is characterized in that include the following steps：
S1, using converter smelting molten steel, by molten steel by conventional external refining and conventional vacuum degassing process, using GPF (General Protection False
Casting process obtains the steel billet of pure few nitrogen, steel billet is thermoformed, positive pry- rolling ring is processed into bearing ring group
Part；
S2, bearing ring component is put into heat-treatment furnace, 800-900 DEG C is raised the temperature in heat-treatment furnace, keep the temperature 1-
1.5h；
S3, quenching：It is 600-750 DEG C that bearing ring component is heated to temperature in stove, keeps the temperature 1.5-3h, takes out bearing ring
Component carries out oil quenching processing, and oily temperature is 220-300 DEG C, and oil cooling is to room temperature after keeping the temperature 1-1.5h；
S4, tempering：By quenched bearing sleeve coil assembly, 20-30min postcoolings are handled under conditions of temperature is 450-550 DEG C
To room temperature, bearing sleeve coil assembly is then subjected to freezing processing, then bearing sleeve coil assembly is placed in temper in tempering furnace, it will be in stove
Temperature be raised to 100-150 DEG C, keep the temperature 20-50min, the temperature in stove then risen to 160-180 DEG C, keep the temperature 20-30min,
The temperature in stove is down to 100-120 DEG C again, keeps the temperature 2-5h, repeats temper 2-4 times；
Bearing sleeve coil assembly cooled to room temperature is taken out after S5, tempering from tempering furnace, you can.
2. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Described in step S2
The temperature of heat-treatment furnace is 820-850 DEG C.
3. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Described in step S3
Oil quenching treatment temperature is 260 DEG C, soaking time 1.2h.
4. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Step S3 institutes axis
It is 670 DEG C that bearing sleeve coil assembly is heated to temperature in stove, keeps the temperature 2h.
5. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Described in step S4
It is by bearing sleeve coil assembly progress freezing processing：Bearing sleeve coil assembly is kept the temperature into 2-5h under -70 DEG C of environment, then returns to room temperature.
6. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Described in step S4
Temper is carried out in 4-5h after freezing processing.
7. the environmentally friendly heat treatment process of wind power bearing hood assembly according to claim 1, it is characterised in that：Described in step S4
It is 3 times to repeat tempering number of processes, and the interval time between temper is 30-40min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810283749.XA CN108504846A (en) | 2018-04-02 | 2018-04-02 | A kind of environmentally friendly heat treatment process of wind power bearing hood assembly |
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| CN201810283749.XA CN108504846A (en) | 2018-04-02 | 2018-04-02 | A kind of environmentally friendly heat treatment process of wind power bearing hood assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039267A (en) * | 2019-05-28 | 2019-07-23 | 聊城市东昌府区嘉泰轴承保持器厂 | A kind of wind-powered turntable bearing wear-resistant material ball retainer Integral welded technique |
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| CN102618711A (en) * | 2011-11-09 | 2012-08-01 | 苏州大学 | Heat treatment technology for stainless steel bearing rings |
| CN102628096A (en) * | 2012-04-23 | 2012-08-08 | 人本集团有限公司 | Thermal processing process of bearing ring |
| CN104328267A (en) * | 2014-12-02 | 2015-02-04 | 江阴吉爱倍万达精工有限公司 | Heat treatment process of large-diameter stainless steel bearing ring |
| CN104726783A (en) * | 2015-02-09 | 2015-06-24 | 燕山大学 | Steel for wind power yaw and variable pitch bearing sleeve ring and preparation method thereof |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105586565A (en) * | 2016-03-01 | 2016-05-18 | 新昌县海拓轴承有限公司 | Carbonitriding thermal treatment process for strengthening wear resistance of bearing ring |
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2018
- 2018-04-02 CN CN201810283749.XA patent/CN108504846A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618711A (en) * | 2011-11-09 | 2012-08-01 | 苏州大学 | Heat treatment technology for stainless steel bearing rings |
| CN102628096A (en) * | 2012-04-23 | 2012-08-08 | 人本集团有限公司 | Thermal processing process of bearing ring |
| CN104328267A (en) * | 2014-12-02 | 2015-02-04 | 江阴吉爱倍万达精工有限公司 | Heat treatment process of large-diameter stainless steel bearing ring |
| CN104726783A (en) * | 2015-02-09 | 2015-06-24 | 燕山大学 | Steel for wind power yaw and variable pitch bearing sleeve ring and preparation method thereof |
| CN105506235A (en) * | 2015-12-15 | 2016-04-20 | 常熟市常轴轴承有限公司 | Heat treatment process of high carbon chromium bearing steel bearing ring |
| CN105586565A (en) * | 2016-03-01 | 2016-05-18 | 新昌县海拓轴承有限公司 | Carbonitriding thermal treatment process for strengthening wear resistance of bearing ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039267A (en) * | 2019-05-28 | 2019-07-23 | 聊城市东昌府区嘉泰轴承保持器厂 | A kind of wind-powered turntable bearing wear-resistant material ball retainer Integral welded technique |
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Application publication date: 20180907 |