CN109402333A - A kind of automotive hub heat treatment method - Google Patents
A kind of automotive hub heat treatment method Download PDFInfo
- Publication number
- CN109402333A CN109402333A CN201811525641.3A CN201811525641A CN109402333A CN 109402333 A CN109402333 A CN 109402333A CN 201811525641 A CN201811525641 A CN 201811525641A CN 109402333 A CN109402333 A CN 109402333A
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- Prior art keywords
- wheel hub
- hub
- heat treatment
- treatment method
- treated
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
- C23C8/42—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied
- C23C8/44—Carburising
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to technical field of heat treatment, and in particular to a kind of automotive hub heat treatment method, including solution treatment, quenching, ageing treatment, Carburization Treatment, surface hardening, final ageing treatment are carried out to wheel hub.The present invention is in solution treatment, soaking time is set as 3-4H, the hardness of 80HB can be reached, meet the required standard in the world about wheel hub impact property, the risk for preventing impact property caused by excessive high hardness from reducing simultaneously, set the cool time of wheel hub, each crystal phase of hub interior is set to tend towards stability, promote the tensile strength of wheel hub, shock resistance, to promote the rigidity and toughness of wheel hub, pass through Carburization Treatment, make hub surface hardness with higher, hub interior still has toughness simultaneously, so that the shock resistance of wheel hub is highly improved, pass through surface hardening, the stress of hub surface after carburizing is removed, wheel hub is set to generate compression internal stress simultaneously, to promote the fatigue strength of wheel hub.
Description
Technical field
The present invention relates to technical field of heat treatment, and in particular to a kind of automotive hub heat treatment method.
Background technique
Automotive hub is an important component of auto parts and components, is required as safety coefficient in the numerous components of automobile
Highest component, in actual production, especially in the case where China's heat treatment process develops and falls behind, due to heat treatment method
Defect causes wheel hub to have certain deficiency in rigidity, toughness, reduces international competitiveness.
Summary of the invention
It is an object of the invention to overcome problems of the prior art, a kind of automotive hub heat treatment method is provided,
It, which may be implemented to provide, has rigidity, the preferable wheel hub of toughness.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved by the following technical solutions:
A kind of automotive hub heat treatment method, includes the following steps:
S1, solution treatment is carried out to wheel hub, solid solubility temperature is 500~530 °, 15~20min of heating-up time, soaking time 3
~4H, then slow cooling to room temperature；
S2, by S1, treated that wheel hub quenches, and 10~15min of cool time then takes out and is placed in hardening media
Cooled down, cooling time 8~12min；
S3, by S2, treated that wheel hub is placed in aging furnace carries out ageing treatment, and aging temp is 130~145 °, timeliness
Time is 1.1~1.4H；
S4, S3 treated wheel hub is subjected to Carburization Treatment；
S5, S4 treated wheel hub is carried out to surface hardening, it is cold to then take out progress oil by 10~20s of cool time；
S6, by S5, treated that wheel hub is placed in aging furnace carries out final ageing treatment, and 88~103 ° of aging temp, timeliness
Time is 4~7H.
Further, the hardening media in the step S2 includes following raw material composition based on parts by weight: vegetable oil
60~80 parts, 12~15 parts of alumina silicate, 2.3~4 parts of corrosion inhibiter, 12~20 parts of potassium nitrate, 0.5~2 part of polyethylene glycol.
Further, the vegetable oil be olive oil, linseed oil, castor oil, any one or more in rape seed oil group
Close object.
Further, the corrosion inhibiter is triethanolamine oleate rouge.
Further, Carburization Treatment mode is liquid carburizing in the step S4.
Further, the medium of the liquid carburizing includes following raw material composition by weight percentage: fixed carbon 70
~80%, ash 0.8~2%, sulfate 0.06~0.1%, potassium chloride 2~5%, graphite 1.5~2.2%, surplus are water.
Further, wheel hub is placed in high-frequency electromagnetic induction glowing furnace by the step S5 carries out surface hardening.
Beneficial effects of the present invention: in solution treatment, being set as 3-4H for soaking time, can reach the hardness of 80HB,
The wind for meeting the required standard in the world about wheel hub impact property, while preventing impact property caused by excessive high hardness from reducing
Danger, sets the cool time of wheel hub, each crystal phase of hub interior is made to tend towards stability, promote tensile strength, the shock resistance of wheel hub,
Hub surface hardness with higher is made by Carburization Treatment to promote the rigidity and toughness of wheel hub, while hub interior is still
So there is toughness, so that the shock resistance of wheel hub is highly improved, by surface hardening, by the hub surface after carburizing
Stress be removed, while make wheel hub generate compression internal stress pass through in hardening media to promote the fatigue strength of wheel hub
Alumina silicate is added, is penetrated into wheel hub, the wearability of hub surface is promoted, corrosion inhibiter is added, promotes the resistant to rust ability of wheel hub, add
Addition polymerization ethylene glycol enables each component in hardening media to be sufficiently mixed, and sets hardening media to by vegetable oil and other components group
At oil quenchinng medium, make wheel hub quench after can be quickly cooled down, carburizing mode is set as liquid carburizing, i.e. salt bath carburizing, is made
Wheel hub seep carbon efficiencies are promoted, and graphite will be equipped in the medium of liquid carburizing, be promoted the thermal conductivity of wheel hub, pass through high-frequency electromagnetic induction
Glowing furnace carries out surface hardening to hub surface, on the one hand accelerates quenching rate, on the other hand reduces the influence to hub interior,
Make hub interior toughness still with higher.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below will
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
All other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of automotive hub heat treatment method, includes the following steps:
S1, solution treatment is carried out to wheel hub, solid solubility temperature is 530 °, heating-up time 18min, soaking time 3H and then delays
It is cooled to room temperature；
S2, by S1, treated that wheel hub quenches, cool time 15min, then takes out to be placed in hardening media and carries out
It is cooling, cooling time 10min；
S3, by S2, treated that wheel hub is placed in aging furnace carries out ageing treatment, and aging temp is 130 °, and aging time is
1.4H；
S4, S3 treated wheel hub is subjected to Carburization Treatment；
S5, S4 treated wheel hub is carried out to surface hardening, it is cold to then take out progress oil by cool time 15s；
S6, by S5, treated that wheel hub is placed in aging furnace carries out final ageing treatment, and 88 ° of aging temp, aging time
For 7H.
Hardening media in the step S2 includes following raw material composition based on parts by weight: 70 parts of vegetable oil, silicic acid
12 parts of aluminium, 4 parts of corrosion inhibiter, 16 parts of potassium nitrate, 0.5 part of polyethylene glycol.
The vegetable oil be olive oil, linseed oil, castor oil, any one or more in rape seed oil composition, this reality
It applies example and is set as olive oil.
The corrosion inhibiter is triethanolamine oleate rouge.
Carburization Treatment mode is liquid carburizing in the step S4.
The medium of the liquid carburizing includes following raw material composition by weight percentage: fixed carbon 80%, ash
1.5%, sulfate 0.06%, potassium chloride 5%, graphite 1.7%, surplus are water.
Wheel hub is placed in high-frequency electromagnetic induction glowing furnace by the step S5 carries out surface hardening.
Embodiment 2
A kind of automotive hub heat treatment method, includes the following steps:
S1, solution treatment is carried out to wheel hub, solid solubility temperature is 520 °, heating-up time 15min, soaking time 4H and then delays
It is cooled to room temperature；
S2, by S1, treated that wheel hub quenches, cool time 12min, then takes out to be placed in hardening media and carries out
It is cooling, cooling time 8min；
S3, by S2, treated that wheel hub is placed in aging furnace carries out ageing treatment, and aging temp is 145 °, and aging time is
1.2H；
S4, S3 treated wheel hub is subjected to Carburization Treatment；
S5, S4 treated wheel hub carries out to surface hardening, cool time 10s then takes out that progress oil is cold, and the oil is cold
Medium be mineral oil and river sand composition, mineral oil and river sand are configured by 1 to 50, the grains of sand of river sand are red-hot wheel
When hub contacts, explosion can be generated, so that the steam blanket between mineral oil and wheel hub be destroyed, enables the fast quickly cooling of wheel hub
But, wheel hub internal toughness is promoted；
S6, by S5, treated that wheel hub is placed in aging furnace carries out final ageing treatment, and 103 ° of aging temp, aging time
For 5H.
Hardening media in the step S2 includes following raw material composition based on parts by weight: 60 parts of vegetable oil, silicic acid
15 parts of aluminium, 3.1 parts of corrosion inhibiter, 12 parts of potassium nitrate, 2 parts of polyethylene glycol.
The vegetable oil be olive oil, linseed oil, castor oil, any one or more in rape seed oil composition, this reality
Apply the composition that example is set as linseed oil, castor oil.
The corrosion inhibiter is triethanolamine oleate rouge.
Carburization Treatment mode is liquid carburizing in the step S4.
The medium of the liquid carburizing includes following raw material composition by weight percentage: fixed carbon 75%, ash
0.8%, sulfate 0.1%, potassium chloride 4%, graphite 1.5%, surplus are water.
Wheel hub is placed in high-frequency electromagnetic induction glowing furnace by the step S5 carries out surface hardening.
Embodiment 3
A kind of automotive hub heat treatment method, includes the following steps:
S1, solution treatment is carried out to wheel hub, solid solubility temperature is 500 °, heating-up time 20min, soaking time 3.5H, then
Slow cooling is to room temperature；
S2, by S1, treated that wheel hub quenches, cool time 10min, then takes out to be placed in hardening media and carries out
It is cooling, cooling time 12min；
S3, by S2, treated that wheel hub is placed in aging furnace carries out ageing treatment, and aging temp is 140 °, and aging time is
1.1H；
S4, S3 treated wheel hub is subjected to Carburization Treatment；
S5, S4 treated wheel hub is carried out to surface hardening, it is cold to then take out progress oil by cool time 20s；
S6, by S5, treated that wheel hub is placed in aging furnace carries out final ageing treatment, and 90 ° of aging temp, aging time
For 4H.
Hardening media in the step S2 includes following raw material composition based on parts by weight: 80 parts of vegetable oil, silicic acid
13 parts of aluminium, 2.3 parts of corrosion inhibiter, 20 parts of potassium nitrate, 1.3 parts of polyethylene glycol.
The vegetable oil be olive oil, linseed oil, castor oil, any one or more in rape seed oil composition, this reality
It applies example and is set as rape seed oil.
The corrosion inhibiter is triethanolamine oleate rouge.
Carburization Treatment mode is liquid carburizing in the step S4.
The medium of the liquid carburizing includes following raw material composition by weight percentage: fixed carbon 70%, ash
2%, sulfate 0.08%, potassium chloride 2%, graphite 2.2%, surplus are water.
Wheel hub is placed in high-frequency electromagnetic induction glowing furnace by the step S5 carries out surface hardening.
More intuitively to verify technical effect of the invention, now by 1-3 of the embodiment of the present invention treated wheel hub with it is existing
The performance of wheel hub in technology comparative example is tested, and test performance index includes fracture elongation, yield strength, hardness, right
It is as follows than result:
The wheel hub after 1-3 of embodiment of the present invention heat treatment refers in fracture elongation, yield strength, hardness performance in summary
Put on the wheel hub being superior in prior art comparative example.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (7)
1. a kind of automotive hub heat treatment method, which comprises the steps of:
S1, solution treatment being carried out to wheel hub, solid solubility temperature is 500~530 °, 15~20min of heating-up time, soaking time 3~
4H, then slow cooling to room temperature；
S2, by S1, treated that wheel hub quenches, 10~15min of cool time, then takes out to be placed in hardening media and carries out
It is cooling, cooling time 8~12min；
S3, by S2, treated that wheel hub is placed in aging furnace carries out ageing treatment, and aging temp is 130~145 °, aging time
For 1.1~1.4H；
S4, S3 treated wheel hub is subjected to Carburization Treatment；
S5, S4 treated wheel hub is carried out to surface hardening, it is cold to then take out progress oil by 10~20s of cool time；
S6, by S5, treated that wheel hub is placed in aging furnace carries out final ageing treatment, and 88~103 ° of aging temp, aging time
For 4~7H.
2. a kind of automotive hub heat treatment method according to claim 1, which is characterized in that the quenching in the step S2
Medium includes following raw material composition based on parts by weight: 60~80 parts of vegetable oil, 12~15 parts of alumina silicate, corrosion inhibiter 2.3~4
Part, 12~20 parts of potassium nitrate, 0.5~2 part of polyethylene glycol.
3. a kind of automotive hub heat treatment method according to claim 2, which is characterized in that the vegetable oil is olive
Oil, linseed oil, castor oil, any one or more in rape seed oil composition.
4. a kind of automotive hub heat treatment method according to claim 2, which is characterized in that the corrosion inhibiter is oleic acid three
Ethanol amine rouge.
5. a kind of automotive hub heat treatment method according to claim 1, which is characterized in that in the step S4 at carburizing
Reason mode is liquid carburizing.
6. a kind of automotive hub heat treatment method according to claim 5, which is characterized in that the medium of the liquid carburizing
Including raw material composition as follows by weight percentage: fixed carbon 70~80%, ash 0.8~2%, sulfate 0.06~
0.1%, potassium chloride 2~5%, graphite 1.5~2.2%, surplus are water.
7. a kind of automotive hub heat treatment method according to claim 1, which is characterized in that the step S5 sets wheel hub
Surface hardening is carried out in high-frequency electromagnetic induction glowing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525641.3A CN109402333A (en) | 2018-12-13 | 2018-12-13 | A kind of automotive hub heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525641.3A CN109402333A (en) | 2018-12-13 | 2018-12-13 | A kind of automotive hub heat treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109402333A true CN109402333A (en) | 2019-03-01 |
Family
ID=65459059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811525641.3A Pending CN109402333A (en) | 2018-12-13 | 2018-12-13 | A kind of automotive hub heat treatment method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104630666A (en) * | 2015-01-30 | 2015-05-20 | 柳州市同进汽车零部件制造有限公司 | Heat treatment process of aluminum alloy automobile hub |
| CN104694727A (en) * | 2015-03-30 | 2015-06-10 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub heat treatment speed-up technology |
| JP2015199973A (en) * | 2014-04-04 | 2015-11-12 | Ntn株式会社 | Method for heat-treating steel and method for manufacturing machine part |
| KR101594276B1 (en) * | 2015-06-19 | 2016-02-16 | 경성산업(주) | A strut of fixation jig |
| CN105714222A (en) * | 2014-12-05 | 2016-06-29 | 青岛泰威机床有限公司 | Heat treatment process for aluminum wheel |
| CN108588391A (en) * | 2018-04-29 | 2018-09-28 | 安徽福斯特汽车部件有限公司 | A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process |
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2018
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| JP2015199973A (en) * | 2014-04-04 | 2015-11-12 | Ntn株式会社 | Method for heat-treating steel and method for manufacturing machine part |
| CN104084587A (en) * | 2014-06-06 | 2014-10-08 | 马鞍山市恒毅机械制造有限公司 | Manufacturing method of powder metallurgical hub bearing unit |
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| CN104630666A (en) * | 2015-01-30 | 2015-05-20 | 柳州市同进汽车零部件制造有限公司 | Heat treatment process of aluminum alloy automobile hub |
| CN104694727A (en) * | 2015-03-30 | 2015-06-10 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub heat treatment speed-up technology |
| KR101594276B1 (en) * | 2015-06-19 | 2016-02-16 | 경성산업(주) | A strut of fixation jig |
| CN108588391A (en) * | 2018-04-29 | 2018-09-28 | 安徽福斯特汽车部件有限公司 | A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process |
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Application publication date: 20190301 |