CN108570547A - A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel small sample heat treatment method for simulating the method - Google Patents
A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel small sample heat treatment method for simulating the method Download PDFInfo
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- CN108570547A CN108570547A CN201810473290.XA CN201810473290A CN108570547A CN 108570547 A CN108570547 A CN 108570547A CN 201810473290 A CN201810473290 A CN 201810473290A CN 108570547 A CN108570547 A CN 108570547A
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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
- C21D9/34—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
- 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
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- 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
- C21D2211/005—Ferrite
-
- 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
- C21D2211/009—Pearlite
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- Chemical & Material Sciences (AREA)
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- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
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- Heat Treatment Of Steel (AREA)
Abstract
The present invention provides a kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel small sample heat treatment methods of simulation the method.By taking the small sample of Φ 25mm in any part of wheel, it is warming up to 860 DEG C with stove and keeps the temperature 0.5 hour, through oil quenchinng, then air-cooled, finally it is again heated to 480 DEG C of tempering, the heat treatment process of heat preservation 2 hours, to simulate the heat treatment process in industrial processes.The simulation to cooling condition inside industrial production railway wheel in heat treatment wheel rim under laboratory condition is realized well, and the method is conducive to the quantity saved the cost of research and development, reduce new product type approval test, shortens new product development cycle.
Description
Technical field
The invention belongs to iron and steel technical fields, and in particular to a kind of heat treatment method and mould of high-carbon steel Heavy-Haul Railway wheel
The wheel small sample heat treatment method of quasi- the method.
Background technology
With flourishing for domestic and international rail traffic industry, commercial trucking industry for wheel increasingly grows prosperity, and the type of wheel product is more next
It is more various, such as, high-speed wheel, heavy-duty wheel, high-power locomotive wheel, elastic wheel etc..However this gives increasingly increased new production
Product exploitation brings larger pressure.
During product development, heat treatment process has the tissue topography of wheel and performance great influence, in work
In industry production, wheel volume is bigger, and wheel rim quenching carries out by the way of to wheel tread water-spraying control, due to wheel in kind
Volume is bigger, and wheel rim is continuously decreased from tread toward internal cooling rate, and water cooling has very big difference after this is heated with small sample, therefore,
Water cooling is carried out after being heated to wheel small sample under laboratory condition cannot simulate the wheel rim in industrial production railway wheel in heat treatment
Internal cooling condition.
Invention content
In order to solve the above technical problems, the present invention provides a kind of heat treatment methods and mould of high-carbon steel Heavy-Haul Railway wheel
The wheel small sample heat treatment method of quasi- the method.By replacing North America heavy-duty wheel work to small sample heat treatment in laboratory
To the research technique of wheel heat processing in kind in industry trial-manufacturing process, laboratory condition effective mould industrial to wheel is realized
It is quasi-, while the technological reserve as a wheel R＆D process extends to the work of the exploitation of wheel new product and conventional products from now on
In skill improvement.
The technical solution that the present invention takes is：
A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel, includes the following steps：Wheel is added at 850~870 DEG C
2.5~3h of heat, then water cooled quenching, then in 470~490 DEG C of temper 4h or more, it is then air-cooled.This is industrial production mistake
The heat treatment method of wheel in journey.
Further, hydraulic pressure when water cooling is 0.32 ± 0.03MPa, cool time 300s.
The chemical composition and weight percent of the high-carbon steel Heavy-Haul Railway wheel be：C 0.67~0.77%, Si≤
1.20%, Mn≤1.20%, P≤0.025%, S≤0.025%, V 0.05~0.15%, 50~150ppm of N, remaining is Fe
With inevitable impurity element.
Further, the chemical composition of the high-carbon steel Heavy-Haul Railway wheel and weight percent are preferably：C 0.72~
0.75%, Si 0.50~0.60%, Mn 0.68~0.76%, P≤0.011%, S≤0.008%, V 0.06~0.07%, N
30~75ppm, remaining is Fe and inevitable impurity element.
The wheel through electric furnace smelting, LF+RH refining vacuum outgas, the round billet for being casting continuously to form Φ 380mm, round billet through cut ingot,
The wheel that heating rolling forms a diameter of 950mm obtains.
At a kind of wheel small sample heat of the heat treatment method in above-mentioned industrial processes of simulation
Reason method, includes the following steps：The small sample of Φ 25mm is taken in any part of wheel, it is small to be warming up to 860 DEG C of heat preservations 0.5 with stove
When, it is then air-cooled through oil quenchinng, 480 DEG C of tempering are finally again heated to, keep the temperature 2 hours.
Further, the time of the oil quenchinng is 8s, and sample is made to be cooled to the cooling velocity acceleration of 30-40 DEG C/s
600 DEG C or less.
At the sample of the wheel small sample heat treatment method processing and the heat treatment method in above-mentioned industrial processes
There is under the rim for automobile wheel tread of reason at 15mm same tissue.
At the sample of the wheel small sample heat treatment method processing and the heat treatment method in above-mentioned industrial processes
The wheel of reason has same mechanical property, and the Rp0.2 of the sample is 770~820MPa, RmFor 1090~1210MPa, A ＞
14%, Z ＞ 35%.
The tissue topography of the small sample is fine pearlite+a small amount of ferrite, and grain size number is 7~8 grades.
The present invention provides a kind of laboratory of cooling condition inside simulation Heavy-Haul Railway railway wheel in heat treatment wheel rim is small
Sample cooling means reduces the quantity of new product type approval test, contracting its purpose is to realize laboratory simulation produced on-site
Short new product development cycle.
The wheel small sample heat treatment method of heat treatment method in simulation industrial processes provided by the invention, obtains
With same tissue at 15mm under industrial production rim for automobile wheel tread：Fine pearlite+a small amount of ferrite, while laboratory Re Chu
Small sample after reason is suitable with industrial production rim for automobile wheel tensile property, realizes well under laboratory condition to industrial production
The simulation of cooling condition inside railway wheel in heat treatment wheel rim.
When carrying out the research and development of wheel new product, method disclosed in this patent is can refer to, first in the lab to wheel
Small sample carries out tissue topography and the mechanical performance that heat treatment obtains target in this way, turns referring next to the method in this patent
Industrial heat treatment method is changed into wheel is carried out to be heat-treated the wheel that can be obtained close to tissue topography and mechanical performance, this
Sample can substantially reduce the quantity of industrial experiment, shorten the R＆D cycle of new product, reduce R＆D costs.
Description of the drawings
Fig. 1 is the metallographic structure photo figure of 15mm under the hub for vehicle wheel tread in embodiment 1；
Fig. 2 is the metallographic structure photo figure of the small sample center portion in embodiment 1；
Fig. 3 is the metallographic structure photo figure of 15mm under the hub for vehicle wheel tread in embodiment 2；
Fig. 4 is the metallographic structure photo figure of the small sample center portion in embodiment 2.
Specific implementation mode
The following describes the present invention in detail with reference to examples.
Embodiment 1
A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel, the chemical composition of the high-carbon steel Heavy-Haul Railway wheel and
Weight percent is as shown in table 1, and the heat treatment method includes the following steps：Wheel is heated into 2.5~3h at 850~870 DEG C,
Then then air-cooled through water hardening 300s under 0.32 ± 0.03MPa hydraulic pressure, then in 470~490 DEG C of temper 4h or more.
The wheel is through electric furnace smelting, LF+RH refinings vacuum outgas, the round billet for being casting continuously to form Φ 380mm, round billet through cutting ingot, heating rolling
The wheel for forming a diameter of 950mm obtains.
A kind of laboratory wheel small sample heat treatment method for simulating above-mentioned heat treatment method, includes the following steps：
Any part of the wheel obtained through method similar to the above takes the small sample of Φ 25mm, and 860 DEG C of heat preservations 0.5 are warming up to stove
Hour, it is then air-cooled through oil quenchinng, 480 DEG C of tempering are finally again heated to, keep the temperature 2 hours.
The performance of hub for vehicle wheel and small sample that above two method respectively obtains is as shown in table 2, and as can be seen from Table 2 two
Person's tensile property is substantially suitable, and only the strength level of small sample is more slightly lower than hub for vehicle wheel, and plasticity index is more slightly higher than hub for vehicle wheel.
The tissue topography of 15mm and small sample is respectively such as Fig. 1,2 under the hub for vehicle wheel tread that above two method respectively obtains
Shown, as can be seen from the figure the tissue topography of the two is almost the same, is fine pearlite+a small amount of ferrite, grain size number
Respectively 7~8 grades, 7~8 grades.
It can be seen that the present embodiment, which preferably realizes laboratory, is heat-treated the simulation being heat-treated to production scene.
The alloying component (weight percent %) of train wheel used by 1 embodiment of table
| C | Si | Mn | P | S | V | N(ppm) | |
| Embodiment 1 | 0.73 | 0.54 | 0.74 | 0.010 | 0.008 | 0.066 | 37 |
| Embodiment 2 | 0.74 | 0.57 | 0.72 | 0.011 | 0.008 | 0.063 | 73 |
The conventional mechanical performance of rim for automobile wheel and small sample in 2 embodiment of table
Embodiment 2
A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel, the chemical composition of the high-carbon steel Heavy-Haul Railway wheel and
Weight percent is as shown in table 1, and the heat treatment method includes the following steps：Wheel is heated into 2.5~3h at 850~870 DEG C,
Then then air-cooled through water hardening 300s under 0.32 ± 0.03MPa hydraulic pressure, then in 470~490 DEG C of temper 4h or more.
The wheel is through electric furnace smelting, LF+RH refinings vacuum outgas, the round billet for being casting continuously to form Φ 380mm, round billet through cutting ingot, heating rolling
The wheel for forming a diameter of 950mm obtains.
A kind of laboratory wheel small sample heat treatment method for simulating above-mentioned heat treatment method, includes the following steps：
Any part of the wheel obtained through method similar to the above takes the small sample of Φ 25mm, and 860 DEG C of heat preservations 0.5 are warming up to stove
Hour, it is then air-cooled through oil quenchinng, 480 DEG C of tempering are finally again heated to, keep the temperature 2 hours.
The performance of hub for vehicle wheel and small sample that above two method respectively obtains is as shown in table 2, and as can be seen from Table 2 two
Person's tensile property is substantially suitable, and only the strength level of small sample is more slightly lower than hub for vehicle wheel, and plasticity index is more slightly higher than hub for vehicle wheel.
The tissue topography of 15mm and small sample is respectively such as Fig. 3,4 under the hub for vehicle wheel tread that above two method respectively obtains
Shown, as can be seen from the figure the tissue topography of the two is almost the same, is fine pearlite+a small amount of ferrite, grain size number
Respectively 7~8 grades, 7~8 grades.
It can be seen that the present embodiment, which preferably realizes laboratory, is heat-treated the simulation being heat-treated to production scene.
Above-mentioned reference embodiment is to a kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel of simulation the method
The detailed description that small sample heat treatment method carries out is illustrative without being restrictive, and can be enumerated according to limited range
Go out several embodiments, therefore the change and modification in the case where not departing from present general inventive concept, protection scope of the present invention should be belonged to
Within.
Claims (10)
1. a kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel, it is characterised in that：Include the following steps：By wheel 850
~870 DEG C of 2.5~3h of heating, then water cooled quenching, then in 470~490 DEG C of temper 4h or more, it is then air-cooled.
2. heat treatment method according to claim 1, it is characterised in that：Hydraulic pressure when water cooling is 0.32 ± 0.03MPa, is quenched
The fiery time is 300s.
3. heat treatment method according to claim 1, it is characterised in that：The high-carbon steel Heavy-Haul Railway wheel chemistry at
Divide and weight percent is：C 0.67~0.77%, Si≤1.20%, Mn≤1.20%, P≤0.025%, S≤0.025%, V
0.05~0.15%, 50~150ppm of N, remaining is Fe and inevitable impurity element.
4. heat treatment method according to claim 3, it is characterised in that：The high-carbon steel Heavy-Haul Railway wheel chemistry at
Divide and weight percent is：C 0.72~0.75%, Si 0.50~0.60%, Mn 0.68~0.76%, P≤0.011%, S
≤ 0.008%, V 0.06~0.07%, 30~75ppm of N, remaining is Fe and inevitable impurity element.
5. heat treatment method according to claim 1, it is characterised in that：The wheel refines true through electric furnace smelting, LF+RH
Sky degassing, the round billet for being casting continuously to form Φ 380mm, round billet are through cutting ingot, heating rolling forms the wheel of a diameter of 950mm and obtains.
6. a kind of wheel small sample heat treatment method of the heat treatment method described in simulation claim 1-5 any one, special
Sign is：The small sample of Φ 25mm is taken in any part of wheel, being warming up to 860 DEG C with stove keeps the temperature 0.5 hour, quenches through oil cooling
Fire, it is then air-cooled, 480 DEG C of tempering are finally again heated to, keep the temperature 2 hours.
7. wheel small sample heat treatment method according to claim 6, which is characterized in that the time of the oil quenchinng is
8s makes sample be cooled to 600 DEG C or less with the cooling velocity acceleration of 30-40 DEG C/s.
8. wheel small sample heat treatment method according to claim 6, which is characterized in that the wheel small sample heat treatment
Have at 15mm under the rim for automobile wheel tread that the sample of method processing is handled with heat treatment method described in claim 1 same
Tissue.
9. wheel small sample heat treatment method according to claim 6, which is characterized in that the wheel small sample heat treatment
The sample of method processing and the wheel of heat treatment method described in claim 1 processing have same mechanical property, the examination
The Rp0.2 of sample is 770~820MPa, RmFor 1090~1210MPa, A ＞ 14%, Z ＞ 35%.
10. wheel small sample heat treatment method according to claim 6, which is characterized in that the tissue shape of the small sample
Looks are fine pearlite+a small amount of ferrite, and grain size number is 7~8 grades.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810473290.XA CN108570547A (en) | 2018-05-17 | 2018-05-17 | A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel small sample heat treatment method for simulating the method |
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|---|---|---|---|
| CN201810473290.XA CN108570547A (en) | 2018-05-17 | 2018-05-17 | A kind of heat treatment method of high-carbon steel Heavy-Haul Railway wheel and the wheel small sample heat treatment method for simulating the method |
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| CN108570547A true CN108570547A (en) | 2018-09-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166605A (en) * | 2021-12-07 | 2022-03-11 | 安徽林洪重工科技有限公司 | Method for simulating and predicting core structure performance of large-size CrMo steel component |
| CN115852259A (en) * | 2022-12-19 | 2023-03-28 | 宝武集团马钢轨交材料科技有限公司 | 380HB hardness grade wheel for railway vehicle and production method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741033A (en) * | 2013-12-26 | 2014-04-23 | 马钢(集团)控股有限公司 | High-carbon wheel steel capable of improving plasticity for rail wagon and wheel manufacturing method thereof |
-
2018
- 2018-05-17 CN CN201810473290.XA patent/CN108570547A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741033A (en) * | 2013-12-26 | 2014-04-23 | 马钢(集团)控股有限公司 | High-carbon wheel steel capable of improving plasticity for rail wagon and wheel manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166605A (en) * | 2021-12-07 | 2022-03-11 | 安徽林洪重工科技有限公司 | Method for simulating and predicting core structure performance of large-size CrMo steel component |
| CN114166605B (en) * | 2021-12-07 | 2024-03-29 | 安徽林洪重工科技有限公司 | Method for simulating and predicting core tissue performance of large-size CrMo steel member |
| CN115852259A (en) * | 2022-12-19 | 2023-03-28 | 宝武集团马钢轨交材料科技有限公司 | 380HB hardness grade wheel for railway vehicle and production method thereof |
| CN115852259B (en) * | 2022-12-19 | 2024-05-28 | 宝武集团马钢轨交材料科技有限公司 | 380HB hardness grade wheel for railway vehicle and production method thereof |
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Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 Intellectual Property Department, Technical Center No. 8, Hunan West Road, Yushan District, Ma'anshan City, Anhui Province Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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Application publication date: 20180925 |