CN100999779A - A356 aluminium alloy hub heat treating tech. - Google Patents
A356 aluminium alloy hub heat treating tech. Download PDFInfo
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- CN100999779A CN100999779A CN 200610102358 CN200610102358A CN100999779A CN 100999779 A CN100999779 A CN 100999779A CN 200610102358 CN200610102358 CN 200610102358 CN 200610102358 A CN200610102358 A CN 200610102358A CN 100999779 A CN100999779 A CN 100999779A
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Abstract
The present invention relates to aluminum alloy heat treatment process, and is especially A356 aluminum alloy wheel hub heat treatment process. The A356 aluminum alloy wheel hub heat treatment process includes two steps, one solid solution step at 550-560 deg.c for 99-300 min, and one ageing step at 140-155 deg.c for 99-150 min. The present invention features lowered power consumption and production cost and raised production efficiency.
Description
Technical field
The present invention relates to a kind of thermal treatment technology of aluminum alloy, particularly relate to a kind of thermal treatment process of A356 aluminium alloy wheel hub.
Background technology
Automobile is to the performance requriements strictness of wheel hub material, for example: very high rotoflector performance, very high intensity, good impelling strength and good abrasion resistance and fatigue performance.At present, no matter the application of home and abroad A356 aluminium alloy wheel hub is quite general.
A356 aluminum alloy wheel hub material is U.S.'s alloy designations, is that typical hypoeutectic Al-Si is an alloy, it usually in automobile, airplane industry as the structural part material, have good castibility, toughness, erosion resistance and fatigue performance.Its mass percent is: Si6.5-7.5, and Mg0.25-0.45, Fe＜0.2, Cu＜0.2, Mn＜0.1, Zn＜0.1, Ni＜0.05, Ti＜0.2, Pb＜0.05, Sn＜0.05, surplus is Al.A356 aluminum alloy wheel hub material silicon content is low, needs to add magnesium, strontium, titanium etc., particularly needs just can reach after Overheating Treatment working condition requirement, and its thermal treatment process is: 500～540 ℃ of solid solubility temperatures, and the time is 6～8 hours; Aging temp is 140～160 ℃, and the time is 3～6 hours.This heat treating method is production cost height, energy consumption height not only, and production efficiency is low.
Summary of the invention
In order to overcome the problems referred to above that prior art exists, the invention provides a kind of thermal treatment process of A356 aluminium alloy wheel hub, this thermal treatment process has shortened solution time by improving solid solubility temperature, thereby has improved production efficiency greatly.
The thermal treatment of A356 aluminium alloy wheel hub is to carry out in special Equipment for Heating Processing, and its flow process is: material loading-advance stove-solution treatment (intensification+insulation)-come out of the stove-quench-advance stove-ageing treatment (intensification+insulation)-come out of the stove.The present invention in the technical scheme that solution treatment and ageing treatment process are adopted is: solid solubility temperature is 550～560 ℃, and the time is 99～300 minutes; Aging temp is 140 ℃～155 ℃, and the time is 99～150 minutes; The as cast condition blank enters the solution area, and the heating-up time is at 30-40 minute, soaking time 69～260 minutes; Add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second; Quench: transfer time is in 20-30 second, 70～90 ℃ of quenching water temperatures, 1～3 minute cool time; The as cast condition blank enters the timeliness district, and the heating-up time asked during insulation 69～110 minutes at 30-40 minute.
The invention has the beneficial effects as follows: under the essentially identical situation of performance of its mechanical property of aluminium alloy wheel hub, mechanical property and microstructure and the former thermal treatment process of handling with this A356 aluminium alloy wheel hub thermal treatment process, reduce energy consumption and production cost, improved production efficiency significantly.
Embodiment
Embodiment 1
The 420-675 aluminium alloy wheel hub, the thermal treatment flow process is: material loading-advance stove-solution treatment: heat up: be raised to 550 ℃, the heating-up time: 40 minutes, holding temperature: 550 ℃, soaking time: 59 minutes, add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second;-come out of the stove-quench: quench transfer time :≤25 seconds, quenching temperature: 80 ℃, the cool time: 3 minutes;-advance stove-ageing treatment: heat up: be raised to 155 ℃, the heating-up time: 40 minutes, holding temperature: 155 ℃, soaking time: 59 minutes;-come out of the stove.
Embodiment 2
The 393-665 aluminium alloy wheel hub, the thermal treatment flow process is: material loading-advance stove-solution treatment: heat up: be raised to 550 ℃, the heating-up time: 40 minutes, holding temperature: 550 ℃, soaking time: 80 minutes, add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second;-come out of the stove-quench: quench transfer time :≤25 seconds, quenching temperature: 80 ℃, the cool time: 3 minutes; Ageing treatment: heat up: be raised to 150 ℃, the heating-up time: 40 minutes, holding temperature: 150 ℃, soaking time: 80 minutes;-come out of the stove.
Embodiment 3
The 395-77 aluminium alloy wheel hub, the thermal treatment flow process is: material loading-advance stove-solution treatment: heat up: be raised to 550 ℃, the heating-up time: 40 minutes, holding temperature: 550 ℃, soaking time: 140 minutes; Add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second;-come out of the stove-quench: quench transfer time :≤25 seconds, quenching temperature: 80 ℃, the cool time: 3 minutes.Ageing treatment: heat up: be raised to 145 ℃, the heating-up time: 40 minutes, holding temperature: 145 ℃, soaking time: 80 minutes;-come out of the stove.
Embodiment 4
The 395-77 aluminium alloy wheel hub, the thermal treatment flow process is: material loading-advance stove-solution treatment: heat up: be raised to 550 ℃, the heating-up time: 40 minutes, holding temperature: 550 ℃, soaking time: 260 minutes, add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second;-come out of the stove-quench: quench transfer time :≤25 seconds, quenching temperature: 80 ℃, the cool time: 3 minutes.Ageing treatment: heat up: be raised to 140 ℃, the heating-up time: 40 minutes, holding temperature: 140 ℃, soaking time: 110 minutes ,-come out of the stove.
By the mechanical property contrast of table 1 and table 2, use the mechanical property of the A356 aluminium alloy wheel hub after the present patent application thermal treatment process is handled and the mechanical property after the processing of former thermal treatment process not to have notable difference, the conformance with standard requirement.
Microstructure contrast by table 3 and table 4, use the microstructure of the A356 aluminium alloy wheel hub after the present patent application thermal treatment process is handled and a dendrite of the microstructure after the processing of former thermal treatment process and the shape of eutectic distribution and Eutectic Silicon in Al-Si Cast Alloys not to have notable difference, all conformance with standard requirements.
Product bench testing (bending, impact, fatigue) result contrast by table 5 and table 6, it is the same to use the present patent application thermal treatment process to handle the rig test result that intra-company is detected after rig test result that back A356 aluminium alloy wheel hub detects through the third party and the former art breading, the conformance with standard requirement.
Draw from above performance comparison: after using the thermal treatment process processing of present patent application, the performance of the mechanical property of A356 aluminium alloy wheel hub, mechanical property and microstructure and former thermal treatment process is basic identical, the conformance with standard requirement.Former thermal treatment process production efficiency is: 72/hour, energy consumption: 0.532 degree/kilogram, production cost is: 15.26 yuan/kilogram.The production efficiency that the thermal treatment process of present patent application is handled is: 160/hour, energy consumption: 0.401 degree/kilogram, production cost is: 14.18 yuan/kilogram.Obviously, under mechanical property, mechanical property and the microstructure of the A356 aluminium alloy wheel hub of handling with present patent application and the essentially identical situation of performance of former art breading, significantly reduce energy consumption and production cost, improved production efficiency (seeing Table 7) greatly.
The contrast of product mechanical property
Table 1: use the present patent application process heat to handle the mechanical property of back aluminium alloy wheel hub
| Technology type | Product | The sample position | Yield strength MPa | Tensile strength MPa | Unit elongation % | Hardness HB | Remarks |
| Embodiment 1 | 420-675 | Wheel rim | 180 | 248 | 7.4 | The conformance with standard requirement | |
| Spoke | 166 | 227 | 6 | ||||
| Core wheel | 87 | ||||||
| 420-675 | Wheel rim | 178 | 245 | 7.2 | The conformance with standard requirement | ||
| Spoke | 165 | 219 | 5.4 | ||||
| Core wheel | 87 | ||||||
| Embodiment 2 | 393-665 | Spoke | 162 | 226 | 7.7 | The conformance with standard requirement | |
| Core wheel | 83 | ||||||
| 393-665 | Spoke | 179 | 240 | 7.5 |
| Core wheel | 87 | The conformance with standard requirement | |||||
| Embodiment 3 | 395-77 | Spoke | 174 | 231 | 6 | The conformance with standard requirement | |
| Core wheel | 86 | ||||||
| 395-77 | Spoke | 173 | 220 | 3.9 | The conformance with standard requirement | ||
| Core wheel | 88 | ||||||
| Embodiment 4 | 395-77 | Spoke | 164 | 236 | 6.4 | The conformance with standard requirement | |
| Core wheel | 80 | ||||||
| 395-77 | Spoke | 165 | 232 | 6.6 | The conformance with standard requirement | ||
| Core wheel | 81 |
Table 2, former process heat are handled the mechanical property of back aluminium alloy wheel hub
| Technology type | Product | The sample position | Yield strength MPa | Tensile strength MPa | Unit elongation % | Hardness HB | Remarks |
| Solid solution: 540 ℃ * 7 hours timeliness: 150 ℃ * 3 hours | 420-675 | Wheel rim | 182 | 249 | 7.9 | The conformance with standard requirement | |
| Spoke | 177 | 237 | 4.6 | ||||
| Core wheel | 78 | ||||||
| 420-675 | Wheel rim | 180 | 248 | 7.8 | The conformance with standard requirement | ||
| Spoke | 174 | 237 | 5.0 | ||||
| Core wheel | 80 | ||||||
| 393-665 | Spoke | 146 | 219 | 8.4 | The conformance with standard requirement | ||
| Core wheel | 84 | ||||||
| 393-665 | Spoke | 151 | 223 | 6.8 | The conformance with standard requirement | ||
| Core wheel | 77 | ||||||
| 395-77 | Spoke | 145 | 206 | 5.1 | The conformance with standard requirement | ||
| Core wheel | 75 | ||||||
| 395-77 | Spoke | 164 | 238 | 7.1 | The conformance with standard requirement | ||
| Core wheel | 79 |
The product microscopic structure contrast
Table 3, use present patent application process heat are handled the microstructure of back aluminium alloy wheel hub
Table 4, former process heat are handled the microstructure of back aluminium alloy wheel hub
Product bench testing (bending, impact, fatigue) result contrast
Table 5, application process heat are handled the back bench testing
| Project | Condition | Standard-required | The result | Judge |
| Fatigue-bending test | Moment of flexure: 3640N.m revolution: 2.5 * 10 5Rotating speed: 500 ± 10r/min | A) any position of wheel is without visible fatigue crack (use the dye penetrating method) b) the wheel bearing load is to the cycle-index c that requires) reach before the requirement cycle-index, the side-play amount of load(ing) point can not surpass 10% of initial full loading side-play amount | Satisfy standard-required | Qualified |
| 13 ° of shock tests | Height of fall: 230 ± 2mm tire: 235/55R17 the blowing pressure: 200 ± 10kpa load: 570kg impact position: 0 ° of angle, 180 ° of angles | A) after impact test finished, wheel should be without through wall flaw (owing to contacting the damage, distortion or the other problem that cause then not at the row of test range with the weight of experimental rig) b) wheel rim can not separate or the generation of leaking gas at wheel. (gas leakage is meant the air pressure completely dissolve of tire within a minute) | Satisfy standard-required | Qualified |
| Radially fatigue test | Load: 17.5KN revolution: 1.0 * 10 6Tire: 235/55R17 inflation pressure: 450kpa nut torque: 110N.m | A) any position of wheel does not have visible fatigue cracking (using the dye penetrating method) b) the wheel carry load is to the cycle index c that requires) nut must not have loosening unusually | Satisfy standard-required | Qualified |
Remarks: above test-results is detected by mechanical industry wheel product quality supervision inspection center and finishes.
Table 6, former process heat are handled the back bench testing
| Project | Condition | Standard-required | The result | Judge |
| Fatigue-bending test | Moment of flexure: 3640N.m revolution: 2.5 * 10 5Rotating speed: 500 ± 10r/min | A) any position of wheel is without visible fatigue crack (use the dye penetrating method) b) the wheel bearing load is to the cycle-index c that requires) reach before the requirement cycle-index, the side-play amount of load(ing) point can not surpass 10% of initial full loading side-play amount | Satisfy standard-required | Qualified |
| 13 ° of shock tests | Height of fall: 230 ± 2mm tire: 235/55R17 the blowing pressure: 200 ± 10kpa load: 570kg impact position: 0 ° of angle, 180 ° of angles | A) after impact test finished, wheel should be without through wall flaw (owing to contacting the damage, distortion or the other problem that cause then not at the row of test range with the weight of experimental rig) b) wheel rim can not separate or the generation of leaking gas at wheel. (gas leakage is meant the air pressure completely dissolve of tire within a minute) | Satisfy standard-required | Qualified |
| Radially fatigue test | Load: 17.5KN revolution: 1.0 * 10 6Tire: 235/55R17 inflation pressure: 450kpa nut torque: 110N.m | A) any position of wheel does not have visible fatigue cracking (using the dye penetrating method) b) the wheel carry load is to the cycle index c that requires) nut must not have loosening unusually | Satisfy standard-required | Qualified |
Remarks: above test-results is detected by quality guarantee portion of company laboratory and finishes.
Table 7: use the every index of the A356 aluminium alloy wheel hub after present patent application is handled and the comparing result of former thermal treatment process
Claims (4)
1. A356 aluminium alloy wheel hub thermal treatment process, be in special Equipment for Heating Processing, to carry out, its flow process is: material loading-advance stove-solution treatment (intensification+insulation)-come out of the stove-quench-advance stove-ageing treatment (intensification+insulation)-come out of the stove, it is characterized in that: the technical scheme that is adopted in solution treatment and ageing treatment process is: solid solubility temperature is: 550～560 ℃, solution time is: 99～300 minutes; Aging temp is: 140 ℃～155 ℃, aging time is: 99～150 minutes.
2. A356 aluminium alloy wheel hub thermal treatment process according to claim 1, it is characterized in that: the as cast condition blank enters the solution area, and the heating-up time is: 30～40 minutes, soaking time was: 69～260 minutes; The as cast condition blank enters the timeliness district, and the heating-up time is: 30～40 minutes, soaking time was: 69～110 minutes.
3. A356 aluminium alloy wheel hub thermal treatment process according to claim 1 and 2 is characterized in that: quenching is transfer time: 20～30 seconds, the quenching water temperature was: 70～90 ℃, the cool time is: 1～3 minute.
4. A356 aluminium alloy wheel hub thermal treatment process according to claim 3 is characterized in that: add hot blast and directly blow to hub surface, wind speed is that 10m/ is more than second.
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| CN 200610102358 CN100999779A (en) | 2006-12-27 | 2006-12-27 | A356 aluminium alloy hub heat treating tech. |
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| CN 200610102358 CN100999779A (en) | 2006-12-27 | 2006-12-27 | A356 aluminium alloy hub heat treating tech. |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880844A (en) * | 2010-06-23 | 2010-11-10 | 广州金邦有色合金有限公司 | Heat treatment process for ZL101A aluminium alloy for automobile wheel hub |
| CN101956151A (en) * | 2010-10-25 | 2011-01-26 | 四川城际轨道交通材料有限责任公司 | Heat treatment technology of high strength aluminium alloy |
| CN101298121B (en) * | 2008-05-28 | 2011-06-15 | 林卫新 | Method for processing motorcycle hub |
| CN102206778A (en) * | 2010-03-30 | 2011-10-05 | 本田技研工业株式会社 | Aluminium die casting alloy used as vehicle material |
| CN101760656B (en) * | 2009-12-29 | 2011-11-16 | 江苏大学 | Energy-saving and short-flow manufacturing method of in situ particle reinforced A356 matrix composite material wheel hub |
| CN101724796B (en) * | 2008-10-23 | 2013-01-02 | 通用汽车环球科技运作公司 | Direct quench heat treatment for aluminum alloy castings |
| CN103008202A (en) * | 2012-06-28 | 2013-04-03 | 天津戴卡轮毂制造有限公司 | Manufacturing method for aluminum alloy automobile hub |
| CN103911504A (en) * | 2014-03-20 | 2014-07-09 | 浙江今飞凯达轮毂股份有限公司 | Continuous heat treatment device of wheel hub blank |
| CN104762536A (en) * | 2015-02-02 | 2015-07-08 | 安徽省斯特嘉汽车零部件有限公司 | Preparation method of magnesium borate whisker-reinforced A356 aluminum alloy wheel hub |
| CN105936971A (en) * | 2016-04-30 | 2016-09-14 | 三门县职业中等专业学校 | Hot processing technology for automobile hub |
| 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 |
| CN109443887A (en) * | 2018-10-26 | 2019-03-08 | 苏州源成铝制品制造有限公司 | A kind of method for testing performance of wheel hub asepsis environment-protecting |
| CN113941641A (en) * | 2021-10-15 | 2022-01-18 | 杭州电子科技大学 | Hot stamping forming method and device for high-pressure high-density plate-fin heat exchanger fin |
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2006
- 2006-12-27 CN CN 200610102358 patent/CN100999779A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298121B (en) * | 2008-05-28 | 2011-06-15 | 林卫新 | Method for processing motorcycle hub |
| CN101724796B (en) * | 2008-10-23 | 2013-01-02 | 通用汽车环球科技运作公司 | Direct quench heat treatment for aluminum alloy castings |
| CN101760656B (en) * | 2009-12-29 | 2011-11-16 | 江苏大学 | Energy-saving and short-flow manufacturing method of in situ particle reinforced A356 matrix composite material wheel hub |
| CN102206778B (en) * | 2010-03-30 | 2013-09-18 | 本田技研工业株式会社 | Aluminium die casting alloy used as vehicle material |
| CN102206778A (en) * | 2010-03-30 | 2011-10-05 | 本田技研工业株式会社 | Aluminium die casting alloy used as vehicle material |
| CN101880844A (en) * | 2010-06-23 | 2010-11-10 | 广州金邦有色合金有限公司 | Heat treatment process for ZL101A aluminium alloy for automobile wheel hub |
| CN101956151A (en) * | 2010-10-25 | 2011-01-26 | 四川城际轨道交通材料有限责任公司 | Heat treatment technology of high strength aluminium alloy |
| CN103008202A (en) * | 2012-06-28 | 2013-04-03 | 天津戴卡轮毂制造有限公司 | Manufacturing method for aluminum alloy automobile hub |
| CN103911504A (en) * | 2014-03-20 | 2014-07-09 | 浙江今飞凯达轮毂股份有限公司 | Continuous heat treatment device of wheel hub blank |
| CN104762536A (en) * | 2015-02-02 | 2015-07-08 | 安徽省斯特嘉汽车零部件有限公司 | Preparation method of magnesium borate whisker-reinforced A356 aluminum alloy wheel hub |
| CN105936971A (en) * | 2016-04-30 | 2016-09-14 | 三门县职业中等专业学校 | Hot processing technology for automobile hub |
| 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 |
| CN109443887A (en) * | 2018-10-26 | 2019-03-08 | 苏州源成铝制品制造有限公司 | A kind of method for testing performance of wheel hub asepsis environment-protecting |
| CN113941641A (en) * | 2021-10-15 | 2022-01-18 | 杭州电子科技大学 | Hot stamping forming method and device for high-pressure high-density plate-fin heat exchanger fin |
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