CN105063331A - Heat treatment technology of hub - Google Patents
Heat treatment technology of hub Download PDFInfo
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- CN105063331A CN105063331A CN201510496089.XA CN201510496089A CN105063331A CN 105063331 A CN105063331 A CN 105063331A CN 201510496089 A CN201510496089 A CN 201510496089A CN 105063331 A CN105063331 A CN 105063331A
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- wheel hub
- quenching
- thermal treatment
- treatment process
- heating
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Abstract
The invention discloses a heat treatment technology of a hub. The heat treatment technology comprises the following technological steps of 1, heating, 2, heat preservation, 3, quenching, 4, cooling, 5, normalizing and 6, recooling. Heat treatment on the hub is adopted, and the method is simple and feasible. Heating of two times is mainly adopted, quenching is added in the heating process, and the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of metal can be greatly improved through quenching. Casting coatings are sprayed after quenching, particles of the casting coatings are relatively thick but heat resistance is good, and misrun or cold shut of castings in the casting process can be prevented. In addition, through final normalizing heating for the second time, grain refinement and carbide distribution uniformity are achieved, and internal stress of materials is removed.
Description
Technical field
The present invention relates to automotive hub field, be specifically related to a kind of wheel hub thermal treatment process.
Background technology
The manufacture method of wheel hub has three kinds: gravitational casting, forging, low pressure precision casting.
Gravitation casting method utilizes gravity that aluminium alloy solution is poured in mould, through lathe process polishing after shaping, can complete production.Manufacturing processed is comparatively simple, and do not need accurate casting technique, cost is low and production efficiency is high, but easily produces bubble (sand holes), and Density inhomogeneity, surface smoothness is inadequate.Lucky what have a suitable vehicle adapted is exactly the wheel hub that this method is produced, and mainly early stage vehicle of producing, new model is many has used trendy wheel hub instead.
Forging method is by pressing machine on mould the direct extrusion molding of monoblock aluminium ingot by kiloton, benefit is even density, surface smoothing is careful, wheel hub wall is thin and lightweight, the strength of materials is the highest, than castmethod more than high three one-tenth, but owing to needing more superior production unit, and yield rate only has five to sixty percent, manufacturing cost is higher.
Low pressure microcast process is precision casting under the low pressure of 0.1Mpa, the plasticity of this forging type is good, clear-cut, even density, any surface finish, can reach high strength, lightweight, can control cost again, and finished product is more than ninety percent, it is the main flow manufacture method of high-quality aluminum alloy wheel hub.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of wheel hub thermal treatment process.
The technical problem that the present invention solves can realize by the following technical solutions: a kind of wheel hub thermal treatment process, comprises following processing step:
(1), heat: after wheel hub being inserted 500 ~ 800 degree of smelting furnaces, be heated to 1000 ~ 1200 degree;
(2), insulation: process furnace is stopped heating, continues insulation 4 ~ 6 hours;
(3), quench: wheel hub is taken out from smelting furnace and to insert in 30 seconds in quenchant 5 minutes;
(4), cool: wheel hub is taken out from quenchant and puts and be cooled to 500 ~ 550 degree in atmosphere;
(5), normalizing: wheel hub is inserted in smelting furnace again and is heated to 800 ~ 900 degree and is incubated;
(6), again cool: wheel hub taken out from smelting furnace and takes out in atmosphere, being cooled to normal temperature.
Preferably, the quenchant in described step (3), quenching is the aqueous solution or quenching oil.
Preferably, described quenching oil is fast quench oil.
Preferably, sprayable refractory between described step (3) quenching and step (4).
Preferably, described refractory materials is cast paint, and spraying method is dip-coating formula.
Preferably, after described step (5) normalizing heating, soaking time is more than 1 hour.
Beneficial effect is: this thermal treatment is the thermal treatment of wheel hub, and method is simple.Mainly have employed twice heating, quenching is added in the process of heating, quenching significantly can improve the rigidity of metal, hardness, wear resistance, fatigue strength and toughness etc., the spraying cast paint after quenching, and cast paint particle is relatively thick, but heat-insulating property is good, foundry goods misrun and cold shut when can prevent from casting, in addition, the second last time normalizing heating, make grain refining and distribution of carbides homogenizing, remove the internal stress of material.
Embodiment
Embodiment 1
The following detailed description of the preferred embodiment of the present invention.
The embodiment of a kind of wheel hub of the present invention thermal treatment process: a kind of wheel hub thermal treatment process, comprises following processing step: (1), heating: be heated to 1000 degree after wheel hub being inserted 500 degree of smelting furnaces; (2), insulation: process furnace is stopped heating, continues insulation 4 hours; (3), quenching: wheel hub taken out from smelting furnace and to insert in 30 seconds in the aqueous solution 5 minutes, adopting dip-coating formula to spray cast paint; (4), cool: wheel hub is taken out from quenchant and puts and be cooled to 500 degree in atmosphere; (5), normalizing: again inserted in smelting furnace by wheel hub and be heated to 800 degree and be incubated, soaking time is 1 hour; (6), again cool: wheel hub taken out from smelting furnace and takes out in atmosphere, being cooled to normal temperature.
Embodiment 2
All the other are identical with embodiment 1, and difference is that the temperature of smelting furnace in described step (1) is 800 degree, is heated to 1200 degree; Soaking time in step (2) is 6 hours; Quenching material in step (3) is fast quench oil; 550 degree are cooled in step (4); Furnace heats in step (5) to 900 degree, and is incubated 2 hours.
Embodiment 3
All the other are identical with embodiment 1, and difference is that the temperature of smelting furnace in described step (1) is 800 degree; Soaking time in step (2) is 6 hours; Quenching material in step (3) is fast quench oil.
After above-mentioned processing step, the wheel hub obtained, its related performance indicators is as following table:
| Tensile strength | Tensile yield strength | |
| Embodiment 1 | 352 | 241 |
| Embodiment 2 | 376 | 223 |
| Embodiment 3 | 385 | 235 |
This thermal treatment is the thermal treatment of wheel hub, and method is simple, respond well.Quenching significantly improves the rigidity of metal, hardness, wear resistance, fatigue strength and toughness etc., and foundry goods misrun and cold shut when cast paint can prevent casting, in addition, last normalizing makes grain refining and distribution of carbides homogenizing, removes the internal stress of material.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a wheel hub thermal treatment process, is characterized in that, comprises following processing step:
(1), heat: after wheel hub being inserted 500 ~ 800 degree of smelting furnaces, be heated to 1000 ~ 1200 degree;
(2), insulation: process furnace is stopped heating, continues insulation 4 ~ 6 hours;
(3), quench: wheel hub is taken out from smelting furnace and to insert in 30 seconds in quenchant 5 minutes;
(4), cool: wheel hub is taken out from quenchant and puts and be cooled to 500 ~ 550 degree in atmosphere;
(5), normalizing: wheel hub is inserted in smelting furnace again and is heated to 800 ~ 900 degree and is incubated;
(6), again cool: wheel hub taken out from smelting furnace and takes out in atmosphere, being cooled to normal temperature.
2. a kind of wheel hub thermal treatment process according to claim 1, is characterized in that: the quenchant in described step (3), quenching is the aqueous solution or quenching oil.
3. a kind of wheel hub thermal treatment process according to claim 2, is characterized in that: described quenching oil is fast quench oil.
4. a kind of wheel hub thermal treatment process according to claim 1, is characterized in that: sprayable refractory between described step (3) quenching and step (4).
5. a kind of wheel hub thermal treatment process according to claim 4, it is characterized in that: described refractory materials is cast paint, spraying method is dip-coating formula.
6. a kind of wheel hub thermal treatment process according to claim 1, is characterized in that: after described step (5) normalizing heating, soaking time is more than 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496089.XA CN105063331A (en) | 2015-08-13 | 2015-08-13 | Heat treatment technology of hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496089.XA CN105063331A (en) | 2015-08-13 | 2015-08-13 | Heat treatment technology of hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105063331A true CN105063331A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510496089.XA Pending CN105063331A (en) | 2015-08-13 | 2015-08-13 | Heat treatment technology of hub |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254263A (en) * | 2019-08-13 | 2020-06-09 | 浙江格洛博机械科技股份有限公司 | Heat treatment device and process for advancing clutch hub |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2309531A1 (en) * | 1972-03-02 | 1973-09-20 | Italsider Spa | METHOD OF MANUFACTURING FULL WHEELS FROM STEEL |
| KR100793702B1 (en) * | 2007-03-30 | 2008-01-14 | 현대 파워텍 주식회사 | Heat treatment method for gear and shaft of auto transmission |
| CN102021301A (en) * | 2010-12-30 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Thermal treatment method of high-carbon steel railway wheels |
| CN102071366A (en) * | 2011-02-25 | 2011-05-25 | 上海海隆石油管材研究所 | High-toughness drilling rod applicable to corrosion acid environment and processing method thereof |
| CN103451530A (en) * | 2013-08-29 | 2013-12-18 | 舞阳钢铁有限责任公司 | Hydroelectric normalized high strength steel sheet with great thickness and easy to weld and production method thereof |
-
2015
- 2015-08-13 CN CN201510496089.XA patent/CN105063331A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2309531A1 (en) * | 1972-03-02 | 1973-09-20 | Italsider Spa | METHOD OF MANUFACTURING FULL WHEELS FROM STEEL |
| KR100793702B1 (en) * | 2007-03-30 | 2008-01-14 | 현대 파워텍 주식회사 | Heat treatment method for gear and shaft of auto transmission |
| CN102021301A (en) * | 2010-12-30 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Thermal treatment method of high-carbon steel railway wheels |
| CN102071366A (en) * | 2011-02-25 | 2011-05-25 | 上海海隆石油管材研究所 | High-toughness drilling rod applicable to corrosion acid environment and processing method thereof |
| CN103451530A (en) * | 2013-08-29 | 2013-12-18 | 舞阳钢铁有限责任公司 | Hydroelectric normalized high strength steel sheet with great thickness and easy to weld and production method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 曼格斯 等: "《塑料注射成型模具的设计与制造》", 28 February 1993, 中国轻工业出版社 * |
| 陈培里: "《工程材料及热处理》", 31 May 2007, 高等教育出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254263A (en) * | 2019-08-13 | 2020-06-09 | 浙江格洛博机械科技股份有限公司 | Heat treatment device and process for advancing clutch hub |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 242200 Guangde Economic Development Zone, Xuancheng, Anhui Applicant after: Anhui excellent Polytron Technologies Inc Address before: 242200 Guangde Economic Development Zone, Xuancheng, Anhui Applicant before: ANHUI AUHER ALUMINUM TECHNOLOGY CO., LTD. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |