CN109338234A - A kind of preparation method of 1100MPa rank heat treatment wheel - Google Patents
A kind of preparation method of 1100MPa rank heat treatment wheel Download PDFInfo
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- CN109338234A CN109338234A CN201811529569.1A CN201811529569A CN109338234A CN 109338234 A CN109338234 A CN 109338234A CN 201811529569 A CN201811529569 A CN 201811529569A CN 109338234 A CN109338234 A CN 109338234A
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- Prior art keywords
- wheel
- heat treatment
- 1100mpa
- preparation
- rim
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- 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
- 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
- C21D2211/002—Bainite
-
- 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)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention belongs to mechanical manufacturing fields, and in particular to a kind of preparation method of 1100MPa rank heat treatment wheel.Technical solution is as follows: step 1) selects steel, the chemical component mass percent of steel are as follows: C 0.15-0.20, Si 0.07-0.15, Mn 1.2-2.2, P < 0.05, surplus are Fe and inevitable impurity；Step 2) manufactures the wheel spoke and rim for automobile wheel of size qualification using selected steel using conventional production process；The wheel spoke and rim for automobile wheel are synthesized to the wheel of size qualification using conventional production process；Step 3) is heat-treated the wheel, heat treatment procedure are as follows: the wheel is heated to 790-810 DEG C first, is come out of the stove, when being cooled to 660-670 DEG C in nitrogen protection, mist is cooled to 170-190 DEG C, and mist cooling rate 5 ± 1 DEG C/s of rate, air is cooled to room temperature.Wheel profile size produced by the present invention is met the requirements of the standard, and overall physical properties are optimized.
Description
Technical field
The invention belongs to mechanical manufacturing fields, and in particular to a kind of preparation method of 1100MPa rank heat treatment wheel.
Background technique
When manufacturing steel wheel, wheel spoke conventional production process includes: blanking, rushes centre bore and bolt hole, spinning wind
Bolt hole, Vehicle Processing are expanded in hole；Rim for automobile wheel conventional production process include: edge rolling, flash butt welding, rolling, end cut, fourth contact, expansion
Mouth, contour roll forming, expanding shaping, valve hole；Wheel is made by synthesizing welder's sequence with rim for automobile wheel in wheel spoke.
Materials with High Strength used in steel wheel conventional fabrication processes at present, generallys use tensile strength 400MPa's or so
Material, individual highest also only 700MPa or so, main cause: first is that equipment processing ability is insufficient, second is that Materials with High Strength is welded
It is bad to connect performance.
Heat treatment is a kind of method for improving material comprehensive mechanical performance, if the conventional production of advanced driving wheel, at reheating
Reason can solve the problems such as equipment processing ability is insufficient, welding performance is bad, cold working stress is concentrated, but solid wheel is heat-treated
Deformation control difficulty is big, is suitble to the material cost of heat treatment high, still belongs to empty exclusively for the designed heat treatment process of wheel production
It is white, thus this method is not used by wheel manufacturer.
As is well known, it is most difficult that steel is occurred in quenching process size, change in shape are that heat treatment work faces
One of the problem of.Compared with common wheel, the wall thickness of lightweight wheel is relatively thin, and non-deformability is relatively weak.Transformation stress is
It the main reason for heat-treatment distortion, and the thermal stress rationally generated using ectonexine cooling rate difference when quenching, can be maximum
It offsets and is deformed caused by transformation stress, this just needs us to find the techniques such as one group of hardening heat, cooling velocity, cooling extent ginseng
Several optimal combination.In addition, solving the problems, such as heating and inhomogeneous cooling, selecting suitable cooling medium, improve conventional vehicle wheel production
Technique is all the completely new project in wheel heat processing production technology.
Summary of the invention
The present invention provides a kind of preparation method of 1100MPa rank heat treatment wheel, and wheel profile size obtained meets
Standard requirements, overall physical properties are optimized, tensile strength 900-1200MPa, yield strength 500-600MPa, are extended
Rate is 12-15%, yield tensile ratio 50%, strength and ductility product 14400MPa%.
Technical scheme is as follows:
A kind of preparation method of 1100MPa rank heat treatment wheel, comprising the following steps:
Step 1) selects steel, the chemical component mass percent of steel are as follows: C 0.15-0.20, Si0.07-0.15, Mn
1.2-2.2, P < 0.05, surplus are Fe and inevitable impurity；
Step 2) manufactures the wheel spoke and rim for automobile wheel of size qualification using selected steel using conventional production process；It adopts
The wheel spoke and rim for automobile wheel are synthesized to the wheel of size qualification with conventional production process；
Step 3) is heat-treated the wheel, heat treatment procedure are as follows: the wheel is heated to 790-810 first
DEG C, it comes out of the stove, when being cooled to 660-670 DEG C in nitrogen protection, mist is cooled to 170-190 DEG C, mist cooling rate 5 ± 1 DEG C/s of rate, and air is cold
But to room temperature.
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
2) in, wall thickness increases 0.5-1.0mm at the common wheel air holes of wall ratio same specification at the air holes of wheel spoke.
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
2) in, rim for automobile wheel makes annealing treatment weld seam after flash butt welding process.
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
2) in, the expanding amount of expanding trimming is increased to the 1.4% of blank size.
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
2) in, in synthesis welder's sequence, component of weld wire used includes: C0.05~0.09, Mn 1.1~1.6, Si 0.3~0.5.
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
3) in, heating furnace is anaerobic walking beam furnace, and away from >=200mm, the heating and thermal insulation time is for wheel and wheel, wheel and tweer
3-5min/mm。
The preparation of the 1100MPa rank heat treatment wheel and deformation control method, preferred embodiment are the step
3) in, wheel spoke bottom is downward, is horizontally arranged, cooling in nitrogen protection, and the wheel rim temperature of rim for automobile wheel is waited to be down to
At 660-670 DEG C, beginning mist is cold, and water temperature is constant at 15 DEG C, and high pressure wind pressure is 0.7MPa, proportion are as follows: 95% high-pressure blast: 5%
Water.
The invention has the benefit that
1, selected materials of the present invention are different from other Materials with High Strength, and the addition of alloy-free composition is low in cost, especially suitable
In QP technique.
2, Si 0.07-0.15, P < 0.05 in steel of the invention, Si, P element solid solution strengthening effect can be improved steel
Intensity.
3, it dissects whole wheel and carries out complete detection, each position physical property is consistent, even tissue, interior tissue are as follows: lath-shaped
Martensite+about 20% bainite, improves the performance of common process weld affected zone, solves locality caused by processing hardening
The bad problem of energy, the strength and ductility product of weak spot are promoted to 14400MPa% by 5700MPa%.
4, the wheel that the present invention produces, single-wheel self weight reduce 40%, have saved material consumption and energy consumption；For
Generally existing overload problems, single-wheel load-bearing capacity increase 60%, and overload condition lower fatigue life still can increase nearly 35%.
5, the heat treatment procedure in the present invention: wheel is come out of the stove after being heated to austenitizing temperature, in nitrogen protection slowly
After being cooled to 660-670 DEG C, interior tissue homogenization, quenching process medium temperature difference reduces, and is formed uniformly lath-shaped along wheel circumference
Martensite will not cause part deformation, to guarantee that part final size is qualified.660-670 DEG C of this temperature range must protect
Card, when being higher than 670 DEG C, martensitic structure is generated excessively violent, can be caused part deformation, be caused part final size overproof；
When lower than 660 DEG C, martensitic structure is generated very few, and part strength is not up to standard.
6, wall thickness is not less than 5mm at hole of spoke, guarantees that wheel overally supports ability, enhances wheel stiffnesses；Expanding process
Expanding amount is increased to the 1.4% of blank size, can reduce elastic properties of materials deformation coefficient, and strengthening material internal organizational structure subtracts
Deformation after trundle heat treatment.
7, in the present invention, mist cold mode being used when quenching, can guarantee that automotive wheel will not deform, final size is qualified.
Detailed description of the invention
Fig. 1 is rim for automobile wheel section view；
Fig. 2 is wheel spoke main view；
Fig. 3 is wheel spoke side view；
Fig. 4 is car wheel structure figure；
Fig. 5 is the metallographic structure low power figure of product in embodiment；
Fig. 6 is the metallographic structure high power figure of product in embodiment.
Specific embodiment
A kind of preparation method of 1100MPa rank heat treatment wheel, comprising the following steps:
Step 1) selects steel, the chemical component mass percentage of steel are as follows: C 0.20, Si 0.12, Mn1.81, P
0.02, surplus is Fe and inevitable impurity；The tensile strength of the steel is 670MPa, yield strength 450MPa；
Step 2) as shown in Figs 1-4, the wheel spoke 3 of size qualification, wheel is manufactured using steel using conventional production process
Spoke sheet thickness 9mm, thickness 5.5mm at air holes 4 after processing；The vehicle of size qualification is manufactured using conventional production process using steel
Wheel rim 1 is taken turns, is annealed after flash butt welding process to weld seam, expanding process expanding amount 25mm；Wheel spoke 3 and rim for automobile wheel
1, the wheel of size qualification, component of weld wire are as follows: C 0.07, Mn 1.4, Si 0.4 are manufactured using synthesis Welding；
Step 3) is heat-treated the wheel, and wheel is heated in 800 DEG C of anaerobic walking beam furnace；20 points of heat preservation
Clock；Wheel spoke bottom is downward, it is horizontally arranged, cooling in nitrogen protection, waiting the wheel rim 2 of rim for automobile wheel, temperature drops in air
To 665 DEG C, mist is cooled to 180 DEG C, mist cooling rate 5 DEG C/s of rate, and water temperature is constant at 15 DEG C, and high pressure wind pressure is 0.7MPa, proportion are as follows:
95% high-pressure blast: 5% water, wheel are rotated around center axis thereof, rotation speed 10r/min；Air is cooled to room temperature.
Wheel tensile strength obtained reaches 1110MPa, and yield strength reaches 555MPa, surveys dynamic balancing and key position ruler
Very little to comply fully with technical requirements, circumference bounce before heat treatment than making moderate progress；Its interior tissue is as shown in Figure 5,6, is lath-shaped
+ 20% bainite of martensite, the organization security high intensity and high tenacity of steel；By dissecting whole wheel, complete examination, each position object
The problems such as rationality can be consistent, welding heat affected area, and elongation percentage caused by no processing hardening is too low；Pass through fatigue detecting, the vehicle
It takes turns under the experimental condition using regulation parameter 150%, the service life still exceeds 1 times of national standard or more, but weight is only equivalent to
The 60% of same specification common wheel.
Claims (7)
1. a kind of preparation method of 1100MPa rank heat treatment wheel, which comprises the following steps:
Step 1) selects steel, the chemical component mass percent of steel are as follows: C 0.15-0.20, Si 0.07-0.15, Mn
1.2-2.2, P < 0.05, surplus are Fe and inevitable impurity；
Step 2) manufactures the wheel spoke and rim for automobile wheel of size qualification using selected steel using conventional production process；Using normal
The wheel spoke and rim for automobile wheel are synthesized the wheel of size qualification by rule production technology；
Step 3) is heat-treated the wheel, heat treatment procedure are as follows: the wheel is heated to 790-810 DEG C first, out
Furnace, when being cooled to 660-670 DEG C in nitrogen protection, mist is cooled to 170-190 DEG C, and mist cooling rate 5 ± 1 DEG C/s of rate, air is cooled to
Room temperature.
2. the preparation method of 1100MPa rank heat treatment wheel according to claim 1, which is characterized in that the step
2) in, wall thickness increases 0.5-1.0mm at the common wheel air holes of wall ratio same specification at the air holes of the wheel spoke.
3. the preparation method of 1100MPa rank heat treatment wheel according to claim 1, which is characterized in that the step
2) in, the rim for automobile wheel makes annealing treatment weld seam after flash butt welding process.
4. the preparation method of 1100MPa rank heat treatment wheel according to claim 1, which is characterized in that the step
2) in, the expanding amount of expanding trimming is increased to the 1.4% of blank size.
5. the preparation of 1100MPa rank heat treatment wheel according to claim 1 and deformation control method, feature exist
In in the step 2), in synthesis welder's sequence, component of weld wire used includes: C 0.05~0.09, Mn 1.1~1.6, Si
0.3~0.5.
6. the preparation method of 1100MPa rank heat treatment wheel according to claim 1, which is characterized in that the step
3) in, heating furnace is anaerobic walking beam furnace, wheel and wheel, wheel and spacing >=200mm of furnace wall, heating and thermal insulation time
For 15-25min.
7. the preparation method of 1100MPa rank heat treatment wheel according to claim 1, which is characterized in that the step
3) in, wheel spoke bottom is downward, is horizontally arranged, cooling in nitrogen protection, and the wheel rim temperature of rim for automobile wheel is waited to be down to
At 660-670 DEG C, beginning mist is cold, and water temperature is constant at 15 DEG C, and high pressure wind pressure is 0.7MPa, proportion are as follows: 95% high-pressure blast: 5%
Water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529569.1A CN109338234B (en) | 2018-12-14 | 2018-12-14 | Preparation method of 1100 MPa-level heat-treated wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811529569.1A CN109338234B (en) | 2018-12-14 | 2018-12-14 | Preparation method of 1100 MPa-level heat-treated wheel |
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| Publication Number | Publication Date |
|---|---|
| CN109338234A true CN109338234A (en) | 2019-02-15 |
| CN109338234B CN109338234B (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811529569.1A Active CN109338234B (en) | 2018-12-14 | 2018-12-14 | Preparation method of 1100 MPa-level heat-treated wheel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289629A (en) * | 2021-12-31 | 2022-04-08 | 浙江金固股份有限公司 | Method for forming rim |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100060255A (en) * | 2008-11-27 | 2010-06-07 | 현대제철 주식회사 | Manufacturing method of steel wheel rim |
| CN101821414A (en) * | 2007-06-19 | 2010-09-01 | 昆士兰铁路有限公司 | Treatment of railway wheels |
| CN103496294A (en) * | 2013-09-29 | 2014-01-08 | 首钢总公司 | Wheel rim for heavy-load truck and forming technology thereof |
| CN106521315A (en) * | 2016-11-10 | 2017-03-22 | 钢铁研究总院 | High strength and high toughness heavy haul train wheel steel and heat treatment method thereof |
| CN107052720A (en) * | 2017-04-12 | 2017-08-18 | 浙江金固股份有限公司 | A kind of manufacture method of steel wheel and its wheel being molded using this method |
| CN108588580A (en) * | 2018-04-24 | 2018-09-28 | 北京交通大学 | A kind of high-purity bainitic steel, wheel and manufacturing method comprising it |
-
2018
- 2018-12-14 CN CN201811529569.1A patent/CN109338234B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821414A (en) * | 2007-06-19 | 2010-09-01 | 昆士兰铁路有限公司 | Treatment of railway wheels |
| KR20100060255A (en) * | 2008-11-27 | 2010-06-07 | 현대제철 주식회사 | Manufacturing method of steel wheel rim |
| CN103496294A (en) * | 2013-09-29 | 2014-01-08 | 首钢总公司 | Wheel rim for heavy-load truck and forming technology thereof |
| CN106521315A (en) * | 2016-11-10 | 2017-03-22 | 钢铁研究总院 | High strength and high toughness heavy haul train wheel steel and heat treatment method thereof |
| CN107052720A (en) * | 2017-04-12 | 2017-08-18 | 浙江金固股份有限公司 | A kind of manufacture method of steel wheel and its wheel being molded using this method |
| CN108588580A (en) * | 2018-04-24 | 2018-09-28 | 北京交通大学 | A kind of high-purity bainitic steel, wheel and manufacturing method comprising it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289629A (en) * | 2021-12-31 | 2022-04-08 | 浙江金固股份有限公司 | Method for forming rim |
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| CN109338234B (en) | 2022-03-11 |
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