CN110257727A - A kind of preparation method of middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel - Google Patents
A kind of preparation method of middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel Download PDFInfo
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- CN110257727A CN110257727A CN201910697075.2A CN201910697075A CN110257727A CN 110257727 A CN110257727 A CN 110257727A CN 201910697075 A CN201910697075 A CN 201910697075A CN 110257727 A CN110257727 A CN 110257727A
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- wheel
- heavy
- steel
- high rigidity
- duty
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Classifications
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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
- C21D1/18—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
- 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Abstract
The invention discloses the preparation methods of a kind of middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel, the middle carbon high rigidity heavy-duty wheel ladle includes the chemical component of following weight percent: C0.60-0.67%, Si 0.80-0.95%, Mn 0.75-0.90%, Cr 0.25-0.35%, V 0.05-0.10%, P≤0.015%, S≤0.021%, remaining is Fe and inevitable impurity element.AAR-BM wheel prepared by the present invention is compared with conventional AAR-B, it can be under the premise of meeting level-B steel ingredient, plasticity toughness index do not reduce, hardness, intensity increase substantially, under its wheel rim tyre tread at 40mm hardness in 332HBW or more, outside surface hardness has reached AAR-C wheel hardness requirement in 345HBW or more.
Description
Technical field
The invention belongs to the manufacturing fields of wagon wheel, and in particular to a kind of middle carbon high rigidity heavy-duty wheel steel and its
The preparation method of heat treatment method and heavy-duty wheel.
Background technique
Wheel is the key components and parts of railway traffic haulage vehicle, has the effects that carrying, traction, guiding, braking, matter
Amount quality directly affects the safety and stability of train operation.Increasing Freight Car Axle Load can be improved vehicle load, improve lorry
Capacity, it is known that: axis increases the increase of the interaction force between certainly will making wheel track again, deteriorates wheel use environment, increases vehicle
Wheel abrasion.
Heavy haul transport is very universal in the Australia based on shipping, and the axis weight of Heavy-Haul Railway train has generally mentioned
Height, conevying efficiency significantly improve, and the following requirement to wheel wearability, anti-contact fatigue strength also significantly improves.North
Level-B steel wheel (i.e. AAR-B) requirement in beautiful AAR M-107 standard: C content 0.57%-0.67%, surface hardness 302-
341HBW has been unable to satisfy current requirement.
Strong hardness index is to measure wheel performance most base values, and size directly affects the anti-contact fatigue of wheel, resistance to
Mill property, therefore, the strong hardness index for improving wheel can significantly improve the service life of wheel.Conventional method is to increase C element to contain
Amount can damage wheel plasticity, malleable band with improving wheel strong hardness index, unfavorable to wheel safety in utilization, therefore
More and more clients propose: the level-B steel ingredient of carbon reaches the strong of C grades of steel of high-carbon (C content: 0.67-0.77%) in use
Degree requires, and while ensuring wheel safety, further increases wearability, the anti-contact fatigue of wheel.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of middle carbon high rigidity heavy-duty wheel steel and its heat treatment methods
And the preparation method of heavy-duty wheel.Carbon high rigidity wheel steel in a kind of AAR-BM for being different from conventional AAR-B is provided, and is invented
Corresponding heat treating regime so that plastics on new materials BM wheel ingredient design meet AAR-B require under the premise of (C≤
0.67%), strong hardness requires to increase substantially, and surface hardness is improved by 302-341HBW to 321-363HBW, section hardness
Gradient is increased to 321-363HB by 285-341HB, reaches the AAR-C material (C:0.67- in the AAR standards system of North America
0.77%) strong hardness requirement, so that the comprehensive mechanical property of plastics on new materials AAR-BM wheel is substantially better than current routine AAR-B vehicle
Wheel extends wheel service life to improve wheel hardness and wearability, has obviously economic benefit and society's effect
Benefit.
A kind of middle carbon high rigidity heavy-duty wheel steel provided by the invention, the chemical component including following weight percent: C
0.60-0.67%, Si 0.80-0.95%, Mn 0.75-0.90%, Cr 0.25-0.35%, V 0.05-0.10%, P≤
0.015%, S≤0.021%, remaining is Fe and inevitable impurity element.
Further, it is preferable to be the chemical component for including following weight percent: C 0.63-0.65%, Si 0.87-
0.93%, Mn 0.84-0.89%, Cr 0.26-0.32%, V 0.06-0.08%, P≤0.010%, S≤0.021%, remaining
For Fe and inevitable impurity element.
Further, the chemical component of following weight percent: C 0.64%, Si 0.0.93%, Mn is preferably comprised
0.89%, Cr 0.28%, V 0.07%, P 0.010%, S 0.018%, remaining is Fe and inevitable impurity element.
Further, the chemical component of following weight percent: C 0.65%, Si 0.0.90%, Mn is preferably comprised
0.87%, Cr 0.28%, V 0.06%, P 0.008%, S 0.021%, remaining is Fe and inevitable impurity element.
Among the above in the ingredient of carbon high rigidity heavy-duty wheel steel, on the basis of middle carbon material, to obtain high strong hardness
Can, the microalloyings such as Cr, V are implemented, and emphasis designs Si, Cr, V content, specific as follows:
C is most basic and most important element in wheel steel, and, hardness contribution maximum strong to its, carburetting can significantly improve vehicle
The strong hardness index of wheel, but wheel plasticity, malleable band are damaged.AAR M-107 standard provides the carbon content range of level-B steel
0.57-0.67%, therefore the range of C is determined as 0.60-0.67% by the present invention.
Si is important intensified element in wheel steel, and when Si content reaches 0.80%, the strength of materials is increased substantially, and also mentions
Its high harden ability and wearability；Ac1, Ac3 phase transition temperature of wheel steel also can be improved in the increase of Si content, is conducive to the anti-of wheel
Thermal damage's performance, therefore the range of Si is determined as 0.80-0.95% by the present invention.
Mn is intensified element important in wheel steel, can effectively improve wheel steel strong hardness, to improve the resistance to of wheel
Performance is ground, the another Mn content that increases also has the function of improving wheel steel hardenability, but also increases the superheated susceptivity of steel and return
Fiery brittleness tendency, therefore the control of Mn content is in 0.75-0.90%.
Cr is secondary solution strengthening element, can effectively improve wheel strong hardness performance, and can increase the through hardening of steel
Property and high-temperature mechanical property；But in terms of the affecting laws from Cr element to complete pearlite critical cooling rate, to make ferrite-
Pearlitic structrure is easily obtained, and Cr content should control: 0.25-0.35%.
V is strong carbonitride-forming elements, mainly exists in the form of solid solution and V (CN) are precipitated two kinds, increases with V content,
Pearlite average transition temperature reduces, and CCT curve moves to the right, lamella refinement, the intensity and hardness liter of pearlitic structrure
The range of V is determined as 0.05-0.10% by height, the present invention.
P and S is impurity element, therefore its content should control and be no more than 0.015%.
The middle carbon high rigidity heavy-duty wheel Heat-Treatment of Steel method provided by the invention, including wheel rim quenching and Temperer
Skill.
Further, in the wheel rim quenching technical, after wheel is warming up to 860-930 DEG C of heat preservation 2.5-4.0 hours with furnace,
Wheel rim tyre tread water-spraying control is to 500 DEG C or less；The wheel rim quenching water temperature is maintained at 10-28 DEG C.
In the tempering process, the condition of tempering be 450-500 DEG C tempering 4.0-6.0 hours.
A kind of preparation method of heavy-duty wheel provided by the invention, using above-mentioned middle carbon high rigidity heavy-duty wheel steel according to
Following process is prepared: electric furnace steel making process, RH application of vacuum process, round billet continuous casting process, is cut ingot and is rolled LF furnace refining procedure
Process processed, heat treatment procedure, processing, finished product detection process.
Further, it in the heat treatment procedure, is heat-treated using the above-mentioned heat treatment method stated.
The present invention is guaranteeing that microscopic structure is still fine pearlite+a small amount of iron element in the range of C content 0.57-0.67%
Under the premise of body, by the design of the microalloyings such as Cr, V and corresponding heat treatment method, make its wheel plasticity, the constant situation of toughness
Under, hence it is evident that wheel strong hardness index is improved, to guarantee the high-wearing feature of wheel, to effectively improve the use longevity of freight car wheel
Life.
AAR-BM wheel prepared by the present invention can meet level-B steel ingredient, plasticity toughness index compared with conventional AAR-B
Under the premise of not reducing, hardness, intensity are increased substantially, under wheel rim tyre tread at 40mm hardness in 332HBW or more, lateral surface
Hardness has reached AAR-C wheel hardness requirement in 345HBW or more.
Detailed description of the invention
Fig. 1 is 1 wheel rim tissue of embodiment；
Fig. 2 is 2 wheel rim tissue of embodiment；
Fig. 3 is 1 wheel rim tissue of comparative example.
Specific embodiment
1-3, table 1-3 and embodiment 1-2 are described in detail the present invention with reference to the accompanying drawing.
The chemical component mass fraction of wheel steel in embodiment 1-2 is as shown in table 1, and embodiment 1-2 is all made of electric furnace smelting
Refining is casting continuously to form after ladle refining, RH refining vacuum outgas outside LF furnace using round billet continuous casting machineRound billet steel ingot,
The heavy-duty wheel that diameter is 915mm is formed after disk cold sawing ingot, heating steel billet, forging and stamping+rolling, heat treatment, finishing.
Embodiment 1
In a kind of middle carbon high rigidity heavy-duty wheel steel, chemical component and weight percent such as table 1 shown in embodiment 1.
A kind of preparation method of heavy-duty wheel, by the molten steel of chemical component such as 1 embodiment 1 of table by electric furnace steel making process,
LF furnace refining procedure, RH application of vacuum process, round billet continuous casting process, cut ingot process, pressure rolling process, heat treatment procedure, processing, at
Product examine is surveyed process and is formed.
The heat treatment procedure are as follows: after wheel is warming up to 860 DEG C of heat preservations 4.0 hours with furnace first, then use 12
DEG C cooling water wheel rim water-spraying control makes the acceleration of wheel rim interior metal be cooled to 500 DEG C hereinafter, finally in 450 DEG C of temperings 6.0
Hour.
Embodiment 2
In a kind of middle carbon high rigidity heavy-duty wheel steel, chemical component and weight percent such as table 1 shown in embodiment 2.
A kind of preparation method of heavy-duty wheel, by the molten steel of chemical component such as 1 embodiment 2 of table by electric furnace steel making process,
LF furnace refining procedure, RH application of vacuum process, round billet continuous casting process, cut ingot process, pressure rolling process, heat treatment procedure, processing, at
Product examine is surveyed process and is formed.
The heat treatment procedure are as follows: after wheel is warming up to 882 DEG C of heat preservations 3.5 hours with furnace first, then use 10-
28 DEG C of cooling water wheel rim water-spraying controls make the acceleration of wheel rim interior metal be cooled to 500 DEG C hereinafter, finally in 470 DEG C of temperings
5.5 hour.
Embodiment 3
In a kind of middle carbon high rigidity heavy-duty wheel steel, chemical component and weight percent such as table 1 shown in embodiment 3.
A kind of preparation method of heavy-duty wheel, by the molten steel of chemical component such as 1 embodiment 3 of table by electric furnace steel making process,
LF furnace refining procedure, RH application of vacuum process, round billet continuous casting process, cut ingot process, pressure rolling process, heat treatment procedure, processing, at
Product examine is surveyed process and is formed.
The heat treatment procedure are as follows: after wheel is warming up to 895 DEG C of heat preservations 3.0 hours with furnace first, then use 10-
28 DEG C of cooling water wheel rim water-spraying controls make the acceleration of wheel rim interior metal be cooled to 500 DEG C hereinafter, finally in 485 DEG C of temperings
5.0 hour.
Embodiment 4
In a kind of middle carbon high rigidity heavy-duty wheel steel, chemical component and weight percent such as table 1 shown in embodiment 4.
A kind of preparation method of heavy-duty wheel, by the molten steel of chemical component such as 1 embodiment 4 of table by electric furnace steel making process,
LF furnace refining procedure, RH application of vacuum process, round billet continuous casting process, cut ingot process, pressure rolling process, heat treatment procedure, processing, at
Product examine is surveyed process and is formed.
The heat treatment procedure are as follows: after wheel is warming up to 930 DEG C of heat preservations 2.5 hours with furnace first, then use 10-
28 DEG C of cooling water wheel rim water-spraying controls make the acceleration of wheel rim interior metal be cooled to 500 DEG C hereinafter, finally in 500 DEG C of temperings
4.0 hour.
Comparative example
Other with embodiment 1, only wherein the ingredient of wheel steel as shown in comparative example in table 1.
As shown in Figure 1, 2, 3, the present embodiment 1-4 preparation that carries out tissue of the rim for automobile wheel of the various embodiments described above and comparative example
Rim for automobile wheel metallographic structure and AAR-B steel (comparative example) wheel it is almost the same, be fine pearlite+a small amount of ferrite.Implement
Example and comparative example wheel mechanical performance are as shown in table 1, table 2 and table 3, it can be seen that embodiment 1-4 has reached AAR-C wheel hardness
It is required that.
It can be seen that embodiment 1-4 have compared with AAR-B steel (comparative example) wheel, in holding carbon, fine pearlite+
Under the premise of a small amount of ferrite, toughness plasticity do not reduce, intensity, hardness are greatly improved, and invention achieves desired effect.
The used chemical component (mass percent %) of wheel steel of 1 embodiment 1 of table, embodiment 2 and comparative example
The wheel stretching of the wheel steel making of 2 embodiment 1 of table, embodiment 2 and comparative example, impact property
The wheel hardness performance of the wheel steel making of 3 embodiment 1 of table, embodiment 2 and comparative example
A kind of system of the above-mentioned reference embodiment to middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel
The detailed description that Preparation Method carries out, is illustrative without being restrictive, can enumerate several realities according to limited range
Example, therefore the change and modification in the case where not departing from present general inventive concept are applied, should be belonged within protection scope of the present invention.
Claims (10)
1. a kind of middle carbon high rigidity heavy-duty wheel steel, which is characterized in that the chemical component including following weight percent: C
0.60-0.67%, Si 0.80-0.95%, Mn 0.75-0.90%, Cr 0.25-0.35%, V 0.05-0.10%, P≤
0.015%, S≤0.021%, remaining is Fe and inevitable impurity element.
2. middle carbon high rigidity heavy-duty wheel steel according to claim 1, which is characterized in that including following weight percent
Chemical component: C 0.63-0.65%, Si 0.87-0.93%, Mn 0.84-0.89%, Cr 0.26-0.32%, V 0.06-
0.08%, P≤0.010%, S≤0.021%, remaining is Fe and inevitable impurity element.
3. middle carbon high rigidity heavy-duty wheel steel according to claim 1 or 2, which is characterized in that including following weight percent
The chemical component of ratio: C 0.64%, Si 0.0.93%, Mn 0.89%, Cr 0.28%, V 0.07%, P 0.010%, S
0.018%, remaining is Fe and inevitable impurity element.
4. middle carbon high rigidity heavy-duty wheel steel according to claim 1 or 2, which is characterized in that including following weight percent
The chemical component of ratio: C 0.65%, Si 0.0.90%, Mn 0.87%, Cr 0.28%, V 0.06%, P 0.008%, S
0.021%, remaining is Fe and inevitable impurity element.
5. a kind of middle carbon high rigidity heavy-duty wheel Heat-Treatment of Steel method as described in claim 1-4 any one, feature
It is: including wheel rim quenching and tempering process.
6. middle carbon high rigidity heavy-duty wheel Heat-Treatment of Steel method according to claim 5, it is characterised in that: the wheel rim
In quenching technical, after wheel is warming up to 860-930 DEG C of heat preservation 2.5-4.0 hours with furnace, wheel rim tyre tread water-spraying control to 500 DEG C with
Under.
7. middle carbon high rigidity heavy-duty wheel Heat-Treatment of Steel method according to claim 6, it is characterised in that: the wheel rim
Quenching water temperature is maintained at 10-28 DEG C.
8. middle carbon high rigidity heavy-duty wheel Heat-Treatment of Steel method according to claim 5 or 6, it is characterised in that: described
In tempering process, the condition of tempering be 450-500 DEG C tempering 4.0-6.0 hours.
9. a kind of preparation method of heavy-duty wheel, which is characterized in that high using the middle carbon as described in claim 1-4 any one
Hardness heavy-duty wheel steel is prepared according to following process: electric furnace steel making process, LF furnace refining procedure, RH application of vacuum process,
Round billet continuous casting process cuts ingot rolling process, heat treatment procedure, processing, finished product detection process.
10. the preparation method of heavy-duty wheel according to claim 9, it is characterised in that: in the heat treatment procedure, use
Heat treatment method as described in claim 5-8 any one is heat-treated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910697075.2A CN110257727A (en) | 2019-07-30 | 2019-07-30 | A kind of preparation method of middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel |
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| CN201910697075.2A CN110257727A (en) | 2019-07-30 | 2019-07-30 | A kind of preparation method of middle carbon high rigidity heavy-duty wheel steel and its heat treatment method and heavy-duty wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112210722A (en) * | 2020-10-19 | 2021-01-12 | 马鞍山钢铁股份有限公司 | High-hardness free-cutting wheel steel and wheel preparation method thereof |
| CN113699452A (en) * | 2021-08-30 | 2021-11-26 | 宝武集团马钢轨交材料科技有限公司 | Steel for tramcar elastic wheel rim and heat treatment method and production method thereof |
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| JP2009001910A (en) * | 2008-08-04 | 2009-01-08 | Komatsu Ltd | High-hardness, high-toughness steel |
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| CN107245651A (en) * | 2017-06-29 | 2017-10-13 | 马鞍山钢铁股份有限公司 | A kind of middle carbon railway freight-car wheel steel and preparation method thereof |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57143469A (en) * | 1981-02-27 | 1982-09-04 | Sumitomo Metal Ind Ltd | Steel for railroad wheel with superior wear resistance |
| JP2009001910A (en) * | 2008-08-04 | 2009-01-08 | Komatsu Ltd | High-hardness, high-toughness steel |
| JP2011080096A (en) * | 2009-10-02 | 2011-04-21 | Jtekt Corp | Method for manufacturing rolling-slide member |
| CN106435365A (en) * | 2016-11-15 | 2017-02-22 | 马鞍山钢铁股份有限公司 | High-hardness wear-resistant wheel steel and wheel preparation method |
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| CN112210722A (en) * | 2020-10-19 | 2021-01-12 | 马鞍山钢铁股份有限公司 | High-hardness free-cutting wheel steel and wheel preparation method thereof |
| CN113699452A (en) * | 2021-08-30 | 2021-11-26 | 宝武集团马钢轨交材料科技有限公司 | Steel for tramcar elastic wheel rim and heat treatment method and production method thereof |
| CN113699452B (en) * | 2021-08-30 | 2023-03-10 | 宝武集团马钢轨交材料科技有限公司 | Steel for tramcar elastic wheel rim and heat treatment method and production method thereof |
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