CN113061695A - Steel wheel heat treatment system and method - Google Patents
Steel wheel heat treatment system and method Download PDFInfo
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- CN113061695A CN113061695A CN202110308630.5A CN202110308630A CN113061695A CN 113061695 A CN113061695 A CN 113061695A CN 202110308630 A CN202110308630 A CN 202110308630A CN 113061695 A CN113061695 A CN 113061695A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 153
- 239000010959 steel Substances 0.000 title claims abstract description 153
- 238000010438 heat treatment Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000000171 quenching effect Effects 0.000 claims abstract description 63
- 238000010791 quenching Methods 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 239000002826 coolant Substances 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 235000011089 carbon dioxide Nutrition 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 13
- 229910001566 austenite Inorganic materials 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000000717 retained effect Effects 0.000 description 6
- 239000000112 cooling gas Substances 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- -1 at the moment Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- C21D1/62—Quenching devices
-
- 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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- 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
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
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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)
- Heat Treatment Of Articles (AREA)
Abstract
A steel wheel heat treatment system and method includes: the first heating furnace is used for heating the steel wheel to completely austenitize the steel wheel; the jet flow cooler can spray a cooling medium on the surface of the steel wheel to rapidly cool the steel wheel to 100-400 ℃ at a cooling speed of more than or equal to 5 ℃/s; the second heating furnace heats the steel wheel, and the temperature of the steel wheel is kept at 250-400 ℃. With the above system, the steel wheel is quenched by spraying a cooling medium onto the surface of the steel wheel. The cooling medium after quenching the steel wheel can not pollute and influence the newly sprayed cooling medium, and is convenient to replace. Therefore, the production cost is reduced, and the Q & P heat treatment of the steel wheel is suitable for large-scale production.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a heat treatment system and a heat treatment method for a steel wheel.
Background
Under the background of light weight of automobiles, the weight of the third generation Advanced High Strength Steel (AHSS) can be reduced by about 20 percent by replacing the traditional steel for the automobiles. Meanwhile, based on the safety of the automobile structural part, the AHSS for the automobile is required to have excellent comprehensive mechanical property and good collision energy absorption characteristic, and the product of strength and elongation needs to reach the level of more than 20.0 GPa%. This requires that the material should have good shape and toughness while maintaining high strength. The Quenching and refining (Quenching-redistribution) heat treatment process based on the austenite TRIP effect and the alpha/gamma complex phase structure theory can enable the traditional ultrahigh-strength steel for hot forming to have good strong plasticity matching.
At present, the Q & P heat treatment process is difficult to industrially apply, quenching and heat preservation are realized by methods such as salt bath, quenching oil and a temperature control mold in industry, but the salt bath and the quenching oil have high danger coefficients, and industrial application can generate a large amount of pollution, so that the subsequent treatment process and cost are increased, the manufacturing cost of the temperature control mold is high, the requirements on the shapes of parts are high, the methods are not favorable for mass production of complex structural parts such as steel wheels, and the like, and meanwhile, due to the special structure of the steel wheels, the conventional quenching mode often generates quenching dead corners at the connecting part of the spoke and the rim, so that the performance of the area is poor, and the service performance of the steel wheels is adversely affected. Or the quenching of the welding seam is not uniform, and the welding seam can be cracked and the wheel can be deformed due to the existence of large residual stress at the welding seam. Meanwhile, salt bath and quenching oil are sensitive to the external environment, and can pollute the quenching medium after long-term use to influence the quenching and heat preservation effects, and the quenching medium is difficult to replace.
Therefore, a system and a method for heat treatment of steel wheels are needed to safely and environmentally treat steel wheels by using a Q & P heat treatment process, so as to reduce production cost and production difficulty, and to make Q & P heat treatment of steel wheels suitable for mass production.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a heat treatment system for steel wheels, which can safely and environmentally process steel wheels by using Q & P heat treatment process, reduce quenching dead corners, and make Q & P heat treatment of steel wheels suitable for mass production.
The invention provides a steel wheel heat treatment system, which comprises: the first heating furnace is used for heating the steel wheel to completely austenitize the steel wheel; the jet flow cooler can spray a cooling medium on the surface of the steel wheel to rapidly cool the steel wheel to 100-400 ℃ at a cooling speed of more than or equal to 5 ℃/s; the second heating furnace heats the steel wheel, and the temperature of the steel wheel is kept at 250-400 ℃.
With the above system, the steel wheel is quenched by spraying a cooling medium onto the surface of the steel wheel. The cooling medium after quenching the steel wheel can not pollute and influence the newly sprayed cooling medium, and is convenient to replace. Therefore, the production cost is reduced, and the Q & P heat treatment of the steel wheel is suitable for large-scale production.
In a preferred embodiment of the present invention, the jet cooling machine includes: the lower part of the upper quenching cover is provided with an opening, the inner shape of the upper quenching cover is matched with the outer peripheral surface of the steel wheel, and the inner surface of the upper quenching cover is provided with a plurality of first jet ports; the outer shape of the lower quenching cover is matched with the inner circumferential surface of the steel wheel, and a plurality of second jet ports are formed in the outer surface of the lower quenching cover; wherein the first injection port and the second injection port can inject cooling medium to the steel wheel.
By adopting the structure, the first jet orifice and the second jet orifice which are arranged are more uniform and reasonable through the upper quenching cover and the lower quenching cover which are matched with the steel wheel, so that the cooling is more uniform, the quenching dead angle is reduced, and the quenching effect is improved.
According to the invention, the jet flow cooling machine further comprises a rotating table for placing the steel wheel, and the rotating table can drive the steel wheel to rotate.
By adopting the system, the steel wheel is driven to rotate by the rotating table in the quenching process of spraying the cooling medium to the steel wheel, so that the cooling is more uniform, and the quenching effect is improved.
In the invention, the cooling medium is preferably dry air or N2、H2Or CO2。
With the above system, by drying the air N2、H2Or CO2The medium cooling, the factor of safety is high, and can not produce a large amount of pollution in the quenching process, need not set up subsequent handling procedure and cost, has reduced manufacturing cost.
In the present invention, preferably, dry ice particles or water mist is added to the cooling medium.
By adopting the system, dry ice particles or water mist can be added into the cooling medium, so that the cooling performance of the cooling medium is improved, the steel wheel is cooled more quickly, and the quenching efficiency is improved.
In addition, the application also provides a heat treatment method of the steel wheel, which comprises the following steps: heating the steel wheel to make the steel wheel austenitized completely; uniformly spraying a cooling medium on the surface of the steel wheel to rapidly cool the steel wheel to 100-400 ℃ at a cooling speed of more than or equal to 5 ℃/s; heating and insulating the steel wheel to keep the temperature of the steel wheel at 250-400 ℃; finally, the steel wheel was slowly cooled to room temperature.
In the above method, the steel wheel is quenched by spraying a cooling medium onto the surface of the steel wheel. The cooling medium after quenching the steel wheel can not pollute and influence the newly sprayed cooling medium, and is convenient to replace. Therefore, the production cost is reduced, and the Q & P heat treatment of the steel wheel is suitable for large-scale production.
According to the invention, the temperature for heating the steel wheel is 820-920 ℃, and the time for heating is 5-40 min.
According to the invention, the time for heating and insulating the steel wheel is preferably 1-15 min.
By adopting the method, the temperature and the time for completely austenitizing the steel wheel and the heat preservation time are provided, and the production efficiency is improved.
In the invention, preferably, the temperature part for heating and insulating the steel wheel is lower than the temperature of the steel wheel after being rapidly cooled.
By adopting the method, the steel wheel meets the one-step or two-step carbon distribution process, so that the production efficiency is improved.
In the present invention, preferably, when the cooling medium is uniformly sprayed onto the surface of the steel wheel, the steel wheel rotates about the axis.
By adopting the method, all parts can be contacted with the sprayed cooling medium when the steel wheel is cooled, so that the cold area is more uniform. Thereby improving the quenching effect.
Drawings
FIG. 1 is a schematic diagram of the distribution of a heat treatment system for steel wheels according to the present application;
FIG. 2 is a schematic structural view of the jet flow cooler in operation;
FIG. 3 is a schematic structural view of the upper quenching cover and the lower quenching cover of FIG. 2 when they are separated;
FIG. 4 is a flow chart of the heat treatment method for steel wheels of the present application.
Description of the reference numerals
A first heating furnace 1; a cooling device 2; a jet cooler 21; a rotary table 211; a lower quench housing 212; the first cooling pipe 212 a; the first injection ports 212 b; an upper quenching cover 213; the second cooling pipe 213 a; second injection ports 213 b; a fan house 22; and a second heating furnace 3.
Detailed Description
The following describes in detail the specific structure and arrangement of the steel wheel heat treatment system of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the distribution of the heat treatment system for steel wheels of the present application. As shown in fig. 1, the heat treatment system for steel wheels of the present application includes: a first heating furnace 1 (in the figure, a roller-hearth heating furnace can also be used in the form of a stepping heating furnace, etc.), a cooling device 2, and a second heating furnace 3 (in the figure, a roller-hearth heating furnace can also be used in the form of a stepping heating furnace, etc.). The first heating furnace 1 is used for heating the steel wheel to completely convert the internal structure of the steel wheel into austenite; the cooling device 2 comprises a jet flow cooling machine 21 and a fan room 22, and is used for uniformly cooling the steel wheel after complete austenitization in a controllable jet flow mode, so that the cooling speed of each part of the steel wheel is greater than the martensite transformation critical cooling speed, and when the steel wheel is cooled to an Ms-Mf temperature range (initial quenching temperature), the steel wheel is transferred into the second heating furnace 3; the second heating furnace 3 keeps the temperature of the steel wheel, so that the steel wheel is kept at the initial quenching temperature or above the initial quenching temperature for a period of time, carbon atoms are distributed from martensite to non-transformed retained austenite, at the moment, carbon is diffused from supersaturated martensite to the retained austenite which is not transformed by martensite, the content of carbon in the retained austenite is increased, the stability of the retained austenite in the steel can be improved, the retained austenite can stably exist at room temperature, and finally the microstructure at room temperature is a martensite and retained austenite complex phase structure.
FIG. 2 is a schematic structural view of the jet cooling machine 21 in operation; fig. 3 is a schematic structural view of fig. 2 in which the upper quenching cover 213 and the lower quenching cover 212 are separated from each other. As shown in fig. 1, 2, and 3, the jet cooler 21 includes a rotary table 211, and the rotary table 211 is used for placing the steel wheel after the heating in the first heating furnace 1 is completed. The steel wheel is placed on the upper surface of the rotating platform 211 and can be driven to rotate by taking the axis of the steel wheel as an axis. The rotary table 211 has a space in the middle for the lower quenching cover 212 to move. The lower quenching cover 212 is provided at an intermediate position in the rotary table 211 and is vertically movable. The outer peripheral surface of the lower quenching cover 212 is matched with the inner peripheral surface of the steel wheel in shape, a plurality of first cooling pipes 212a are uniformly distributed on the lower quenching cover 212, and a plurality of first jet ports 212b facing outwards are uniformly arranged on the first cooling pipes 212 a. The upper position of the rotating table 211 is provided with an upper quenching cover 213 which can move up and down, the lower part of the upper quenching cover 213 is opened, and the shape of the inner circumferential surface of the upper quenching cover 213 is matched with the outer circumferential surface of the steel wheel. A plurality of second cooling pipes 213a are uniformly arranged on the upper quenching cover 213, and a plurality of second injection ports 213b facing the axis are uniformly arranged on the second cooling pipes 213 a. After the steel wheel is transferred to the rotating platform 211, the lower quenching cover 212 is lifted to be positioned inside the steel wheel, and the upper quenching cover 213 is lowered to be positioned at the periphery of the steel wheel to clamp the inner surface and the outer surface of the steel wheel.
The fan room 22 is internally provided with a fan which is connected with the jet flow cooling machine 21 through a pipeline and can provide cooling gas for the jet flow cooling machine 21. The cooling gas can be dry air, N2, H2, CO2 and the like, and dry ice particles or water mist and the like are added into the cooling gas, and a suitable cooling gas medium can be selected according to actual conditions.
From above, after the steel wheel is heated to be completely austenitized in the first heating furnace 1, the steel wheel is output from the outlet of the first heating furnace 1 by a transfer device such as a roller way, a walking beam and the like, and the steel wheel is transferred to the rotating table 211. After the steel wheel is placed at a predetermined position, the lower quenching cover 212 is raised inside the steel wheel, and the upper quenching cover 213 is lowered to the outer peripheral surface of the steel wheel. The first injection ports 212b and the second injection ports 213b inject cooling gas to the inner and outer surfaces of the steel wheel. The rotating platform 211 drives the steel wheel to rotate around the axis, so that the steel wheel is rapidly cooled to the initial quenching temperature of 100-400 ℃ at a cooling speed of not less than 5 ℃/s. Then, the rotation of the rotary table 211 is stopped, the upper quenching cover 213 is raised, the lower quenching cover 212 is lowered, and the quenching and cooling of the steel wheel are completed. And transferring the steel wheel to a second heating furnace, preserving the heat of the steel wheel, keeping the steel wheel at the distribution temperature for a certain time, and performing carbon distribution treatment, wherein the distribution temperature is equal to or lower than the primary quenching temperature. And after the carbon distribution treatment is finished, the steel wheel is output from the outlet of the second heating furnace 3 through the transfer device, and the steel wheel is air-cooled to room temperature to finish the heat treatment.
Further, the steel wheels output by the second heating furnace 3 can be cooled to room temperature in a water cooling or air cooling mode, so that the cooling efficiency is improved, and the production rhythm is improved.
The present application also provides a method of heat treating a steel wheel. Fig. 4 is a flow chart of the heat treatment method for the steel wheel of the present application, and as shown in fig. 4, the specific flow chart of the heat treatment method for the steel wheel is as follows:
1. a steel wheel heating procedure: transferring the steel wheel to a first heating furnace 1 for heating, setting the temperature of a soaking section at 820-;
2. a cooling process: after austenitizing is completed, the steel wheel is transferred to the jet cooling machine 21, the cooling medium is sprayed to the inner surface and the outer surface of the steel wheel by a controllable jet method (controlling the spraying speed of the cooling medium and thus controlling the cooling speed) through the first jet port 212b and the second jet port 213b arranged on the upper quenching cover 213 and the lower quenching cover 212, and the rotating table 211 drives the steel wheel to rotate by taking the axis of the steel wheel as an axis, so that each part of the steel wheel is uniformly cooled. Dry ice particles or water mist and the like are added into dry air, N2, H2, CO2 and the like as cooling media, so that the parts of special performance required areas of the steel wheel with different shape characteristics, different thicknesses, welding seams and the like are uniformly and rapidly cooled to the initial quenching temperature of 100-400 ℃ at the cooling speed of more than or equal to 5 ℃/s;
3. a distribution process: the steel wheel cooled to 100-400 ℃ is quickly transferred to a second heating furnace 31 for heating and heat preservation, and carbon distribution treatment can be carried out by adopting a one-step or two-step carbon distribution process, namely the initial quenching temperature is equal to the distribution temperature or lower than the distribution temperature. The temperature of the second heating furnace 3 is 250-400 ℃, and the heating time is about 1-15 min;
4. a secondary cooling process: and slowly cooling the steel wheel after distribution to room temperature to obtain the strengthening and toughening steel wheel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A steel wheel heat treatment system, comprising:
the first heating furnace is used for heating the steel wheel to completely austenitize the steel wheel;
the jet flow cooler can spray a cooling medium on the surface of the steel wheel to rapidly cool the steel wheel to 100-400 ℃ at a cooling speed of more than or equal to 5 ℃/s;
the second heating furnace heats the steel wheel, and the temperature of the steel wheel is kept at 250-400 ℃.
2. The steel wheel heat treatment system of claim 1, wherein the jet cooler comprises:
the lower part of the upper quenching cover is provided with an opening, the inner shape of the upper quenching cover is matched with the outer peripheral surface of the steel wheel, and the inner surface of the upper quenching cover is provided with a plurality of first jet ports;
the outer shape of the lower quenching cover is matched with the inner circumferential surface of the steel wheel, and a plurality of second jet ports are formed in the outer surface of the lower quenching cover;
wherein the first injection port and the second injection port can inject cooling medium to the steel wheel.
3. The steel wheel heat treatment system of claim 2, wherein the jet cooler further comprises a turntable for holding the steel wheel, the turntable being adapted to rotate the steel wheel.
4. The steel wheel heat treatment system of claim 1, wherein the cooling medium is dry air, N2、H2Or CO2。
5. The steel wheel heat treatment system of claim 4, wherein dry ice particles or water mist are added to the cooling medium.
6. A steel wheel heat treatment method according to any one of claims 1 to 5, comprising:
heating the steel wheel to make the steel wheel austenitized completely;
uniformly spraying a cooling medium on the surface of the steel wheel to rapidly cool the steel wheel to 100-400 ℃ at a cooling speed of more than or equal to 5 ℃/s;
heating and insulating the steel wheel to keep the temperature of the steel wheel at 250-400 ℃;
finally, the steel wheel was slowly cooled to room temperature.
7. The heat treatment method for the steel wheel as claimed in claim 6, wherein the temperature for the heat treatment of the steel wheel is 820-920 ℃, and the time for the heat treatment is 5-40 min.
8. The heat treatment method for the steel wheel according to claim 6, wherein the heating and heat preservation time for the steel wheel is 1-15 min.
9. The heat treatment method for the steel wheel according to claim 6, wherein the temperature for heating and holding the steel wheel is not lower than the temperature of the steel wheel after rapid cooling.
10. The method for heat-treating a steel wheel according to claim 6, wherein the steel wheel is rotated about the axis when the cooling medium is uniformly sprayed onto the surface of the steel wheel.
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| CN202110308630.5A CN113061695A (en) | 2021-03-23 | 2021-03-23 | Steel wheel heat treatment system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114525386A (en) * | 2022-02-18 | 2022-05-24 | 滨州学院 | Adjustable spray quenching device and method for heat treatment of passenger car hub |
| CN114854955A (en) * | 2022-04-11 | 2022-08-05 | 北京机电研究所有限公司 | Selective jet cooling device for high-strength steel plate |
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| CN110317943A (en) * | 2019-08-12 | 2019-10-11 | 马鞍山钢铁股份有限公司 | A kind of two-sided quenching cooler of train wheel |
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| CN111575461A (en) * | 2020-06-03 | 2020-08-25 | 宝武集团马钢轨交材料科技有限公司 | Wheel quenching table and processing method thereof |
| CN216972606U (en) * | 2021-03-23 | 2022-07-15 | 北京机电研究所有限公司 | Steel wheel heat treatment system |
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