CN101880844A - Heat treatment process for ZL101A aluminium alloy for automobile wheel hub - Google Patents
Heat treatment process for ZL101A aluminium alloy for automobile wheel hub Download PDFInfo
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- CN101880844A CN101880844A CN 201010208926 CN201010208926A CN101880844A CN 101880844 A CN101880844 A CN 101880844A CN 201010208926 CN201010208926 CN 201010208926 CN 201010208926 A CN201010208926 A CN 201010208926A CN 101880844 A CN101880844 A CN 101880844A
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Abstract
The invention discloses a heat treatment process for a ZL101A aluminium alloy for an automobile wheel hub. The process comprises the following steps of: putting an as-cast blank into a solution treatment furnace for raising temperature, performing solution treatment at a solution temperature, taking the blank out of the solution treatment furnace, quenching the blank, putting the as-cast blank into an ageing treatment furnace for raising the temperature, performing ageing treatment on the blank at an aging treatment temperature; and after taking the blank out of the ageing treatment furnace, cooling the blank in the air medium. The heat treatment process is characterized in that: the solution treatment temperature is 525 to 550 DEG C; the heat maintaining time during the solution treatment is 60 to 120 minutes; the ageing treatment temperature is 165 to 180 DEG C; and the heat maintaining time during the ageing treatment is 90 to 180 minutes. The heat treatment process organically combines the short-time solution treatment and the short-time ageing treatment and fulfils the aim of low energy consumption and high work efficiency. At the same time, compared with the standard T6 heat treatment process, the heat treatment process can shorten the heat treatment time by over one time and guarantee that an alloy microstructure obtained through the solution treatment and the ageing treatment reaches an ideal state of the standard T6 treatment.
Description
Technical field
The present invention relates to a kind of heat treating method of casting Al-Si alloy, particularly cast the heat treating method of ZL101A aluminium alloy wheel hub, solid solution, the ageing treatment time of this method in can the shortening heat treating processes, thus the treatment production efficient of aluminium alloy wheel hub improved, cut down the consumption of energy.
Background technology
The low pressure casting aluminum alloy wheel hub extensively adopts the Al-7Si-Mg alloy.In order to satisfy the various mechanical property requirements of automotive hub to alloy material, a wherein important procedure is to implement T6 thermal treatment, and table 1 has been listed the automotive hub Al-Si casting alloy T6 thermal treatment standard technology that country variant is worked out.As can be seen from the table, existing thermal treatment process need spend the treatment time more than 10 hours, is the longest technology consuming time in the aluminium diecast alloy wheel hub manufacturing processed.Because length consuming time has not only reduced production efficiency, also causes huge heating energy consumption.Research and develop that thermal treatment process is significant in short-term.
The T6 heat treatment process comprises solution treatment and two processes of ageing treatment of organic connections, final purpose be obtain tiny, nodularization eutectic Si mutually and the Mg that evenly separates out
2The Si strengthening phase.Therefore the solution treatment process need obtains the supersaturation aluminium alloy sosoloid that Mg, Si element are evenly distributed, and realizes the nodularization of remaining Si eutectic phase.The ageing treatment process will promote evenly separating out of strengthening phase.Good collocation by thermal treatment temp and soaking time realizes above-mentioned target, is to realize heat treated in short-term basic point of departure.
Table 1 country variant Al-7Si-Mg cast aluminium alloy T6 thermal treatment standard technology
Recently, result of study (the D.L.Zhang of Zhang etc., L.H.Zheng, D.H.StJohn, J.Light Metals 2 (1) (2002) 27-36) and the result of study (E.Ogris of Ogris, A.Wahlen, H.Luchinger, P.J.Uggowitzer, J.LightMetals 2 (4) (2002) 263-269) solution treatment that shows the A356 alloy can reach ideal effect in ℃ following short period at 530-560, and the latter's result shows that also the alloy strength of best timeliness even plasticity are with peak value timeliness unanimity.170 ℃ of timeliness time to peaks are at 2-4 hour, and the timeliness time to peak under 150 ℃ then is 12-14 hour.These results suitably improve aging temp, shorten aging time greatly and have established theoretical basis.
The domestic thermal treatment patent in short-term of declaring is few at present, wear card rising sun wheel hub Manufacturing Co., Ltd and disclose a patent " A356 alloy wheel hub thermal treatment process " (patent publication No.: CN100999779A), this patent core be adopt following thermal treatment process: 550-560 ℃ following solution treatment 99-300 minute, 140-155 ℃ following timeliness 90-150 minute.Though the heat treatment time of this patent is handled minimizing to some extent than the T6 of present national Specification, its ageing treatment is insufficient, does not give full play to the strengthening effect of precipitated phase.Therefore the thermal treatment process in short-term of research and development should comprise solution treatment in short-term, ageing treatment and the two organic assembling in short-term, reach less energy-consumption, high efficiency purpose, the alloy microtexture that requires wherein solid solution and timeliness to obtain simultaneously should reach the heat treated perfect condition of standard T6.
Summary of the invention
The objective of the invention is to overcome the problem that exists in the existing correlation technique of automotive hub with ZL101A alloy T6 thermal treatment standard technology and research and development, the thermal treatment process in short-term of a kind of less energy-consumption, high efficiency, alternative traditional technology is provided, and guarantees that microtexture, the room temperature tensile mechanical property of alloy reach the T6 treatment process level of CNS regulation.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of thermal treatment process of ZL 101 A aluminium alloy for automobile wheel hub, it comprises the steps: that the as cast condition blank goes into that Solution Treatment Furnace heats up, solution treatment under the solid solubility temperature, go out that Solution Treatment Furnace quench treatment, as cast condition blank go into that aging oven heats up, ageing treatment under the aging temp, go out behind the aging oven and cool off in the air dielectric, it is characterized in that: solid solution temperature is 525-550 ℃, and the solution treatment soaking time is 60-120 minute; Aging temperature is 165-180 ℃, and the ageing treatment soaking time is 90-180 minute.
The time that the as cast condition blank is gone into stove and is warmed up to solid solubility temperature was controlled at 30-40 minute; The as cast condition blank goes into stove and is warmed up to the aging temp time to be controlled at 30-40 minute.
Quenchant is a water, and water temperature is controlled at 60-100 ℃, and the cool time was controlled at 1-3 minute, and the time of transferring to the quenching facility from Solution Treatment Furnace is controlled at 20-30 second.
The invention has the beneficial effects as follows: the present invention reaches the two organic assembling of ageing treatment in short-term with solution treatment in short-term, reach less energy-consumption, high efficiency purpose, with standard T6 thermal treatment process relatively, the present invention can the shortening heat treatment time more than one times, guarantees that simultaneously wherein solid solution and timeliness handle the alloy microtexture that obtains and reach the perfect condition that standard T6 handles.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
The aluminium alloy blank microcosmic optics metallurgical that Fig. 1 obtains for embodiment of the invention 1-4, among the figure a), b), c), d) be respectively the aluminium alloy blank microcosmic optics metallurgical that embodiment 1,2,3,4 obtains;
Fig. 2 is the distribution plan of eutectic Si phase nodularization and Mg element after the embodiment of the invention 1 solution treatment;
Fig. 3 is the distribution plan of eutectic Si phase nodularization and Mg element after the embodiment of the invention 4 solution treatment.
Embodiment
In order to understand technical characterstic of the present invention better, the present invention is further illustrated below in conjunction with embodiment, need to prove, embodiment is not a limiting the scope of the invention.
Embodiment 1:
From casting ZL101AA cast aluminium alloy base, intercept 50 * 70 * 120mm
3The blank material.The BSK-L40 resistance heat treatment furnace (rated output 4KW) that adopts Luoyang BSK Electronic Material Co., Ltd. to produce.Two resistance furnace 1#, 2# furnace temperature are warmed up to 535 ℃ respectively in advance, 170 ℃, the furnace temperature fluctuation scope is controlled at ± and 5 ℃.The alloy blank of intercepting is put into the solution treatment of thermal treatment 1# stove, and to set the time be warmed up to 535 ℃ be 30 minutes, soaking time 120 minutes.After solid solution insulation finishes, blank moved in 80 ℃ the hot water bath.Moving into the hot water bath time from coming out of the stove to was 15 seconds, quenched 3 minutes in the hot water bath.From the hot water bath, take out sample and wipe specimen surface water mark away with dried cloth.This alloy billet is inserted the 2# resistance furnace carry out ageing treatment, setting and being warmed up to 170 ℃ of times is 40 minutes, and soaking time is 120 minutes.Ageing treatment is taken out sample, naturally cooling in the atmospheric environment after finishing from the 2# stove.
Embodiment 2:
According to 5 φ 12 coupons of " cast aluminium alloy metal mold standard test specimen and running and feeding system " regulation preparation ZL101AA alloy of stipulating among standard GB/T 1173-1995.The BSK-L40 resistance heat treatment furnace (rated output 4KW) that adopts Luoyang BSK Electronic Material Co., Ltd. to produce.Two resistance furnace 1#, 2# furnace temperature are warmed up to 550 ℃ respectively in advance, 165 ℃, the furnace temperature fluctuation scope is controlled at ± and 5 ℃.Coupon is put into the solution treatment of thermal treatment 1# stove, and to set the time be warmed up to 550 ℃ be 30 minutes, soaking time 90 minutes.After solid solution insulation finishes, coupon moved in 60 ℃ the hot water bath, moving into the hot water bath times from whole coupons of coming out of the stove was 30 seconds, quenched 1 minute in the hot water bath.From the hot water bath, take out sample and wipe specimen surface water mark away with dried cloth.This alloy coupon is inserted the 2# resistance furnace carry out ageing treatment, setting and being warmed up to 165 ℃ of times is 30 minutes, and soaking time is 180 minutes.Ageing treatment is taken out sample, naturally cooling in the atmospheric environment after finishing from the 2# stove.
After the thermal treatment, the tensile mechanical properties mathematical mean of 3 coupons is: tensile strength σ
bBe 310MPa; σ
0.2Be 255MPa; Tension set is 6.9%.
Embodiment 3:
From casting ZL101AA cast aluminium alloy base, intercept 50 * 70 * 120mm
3The blank material.The BSK-L40 resistance heat treatment furnace (rated output 4KW) that adopts Luoyang BSK Electronic Material Co., Ltd. to produce.Two resistance furnace 1#, 2# furnace temperature are warmed up to 550 ℃ respectively in advance, 180 ℃, the furnace temperature fluctuation scope is controlled at ± and 5 ℃.The alloy blank of intercepting is put into the solution treatment of thermal treatment 1# stove, and to set the time be warmed up to 550 ℃ be 40 minutes, soaking time 120 minutes.After the solid solution insulation finished, in the hot water bath with 80 ℃ of blank immigrations, moving into the hot water bath time from coming out of the stove to was 18 seconds, quenched 3 minutes in the hot water bath.From the hot water bath, take out sample and wipe specimen surface water mark away with dried cloth.This alloy billet is inserted the 2# resistance furnace carry out ageing treatment, setting and being warmed up to 180 ℃ of times is 40 minutes, and soaking time is 90 minutes.Ageing treatment is taken out sample, naturally cooling in the atmospheric environment after finishing from the 2# stove.
Embodiment 4:
5 spokes of intercepting from gravitational casting ZL101AA alloy wheel hub (φ 250).The BSK-L40 resistance heat treatment furnace (rated output 4KW) that adopts Luoyang BSK Electronic Material Co., Ltd. to produce.Two resistance furnace 1#, 2# furnace temperature are warmed up to 525 ℃ respectively in advance, 170 ℃, the furnace temperature fluctuation scope is controlled at ± and 5 ℃.The alloy blank of intercepting is put into the solution treatment of thermal treatment 1# stove, and to set the time be warmed up to 525 ℃ be 30 minutes, soaking time 120 minutes.After the solid solution insulation finished, in the hot water bath with 90 ℃ of blank immigrations, moving into the hot water bath time from coming out of the stove to was 28 seconds, quenched 2 minutes in the hot water bath.From the hot water bath, take out sample and wipe specimen surface water mark away with dried cloth.This alloy billet is inserted the 2# resistance furnace carry out ageing treatment, setting and being warmed up to 170 ℃ of times is 30 minutes, and soaking time is 150 minutes.Ageing treatment is taken out sample, naturally cooling in the atmospheric environment after finishing from the 2# stove.
From Fig. 1 to Fig. 3 as can be known, the aluminium alloy blank that after the present invention handles, obtains have tiny a, nodularization eutectic Si mutually and the Mg that evenly separates out
2The Si strengthening phase, and the solution treatment process obtains the supersaturation aluminium alloy sosoloid that Mg, Si element are evenly distributed, and realized the nodularization of remaining Si eutectic phase, the ageing treatment process has promoted evenly separating out of strengthening phase, has guaranteed that the alloy microtexture that obtains after solid solution and timeliness processing reaches the perfect condition that standard T6 handles.
Claims (3)
1. the thermal treatment process of a ZL 101 A aluminium alloy for automobile wheel hub, it comprises the steps: that the as cast condition blank goes into that Solution Treatment Furnace heats up, solution treatment under the solid solubility temperature, go out that Solution Treatment Furnace quench treatment, as cast condition blank go into that aging oven heats up, ageing treatment under the aging temp, go out behind the aging oven and cool off in the air dielectric, it is characterized in that: solid solution temperature is 525-550 ℃, and the solution treatment soaking time is 60-120 minute; Aging temperature is 165-180 ℃, and the ageing treatment soaking time is 90-180 minute.
2. the thermal treatment process of a kind of ZL 101 A aluminium alloy for automobile wheel hub according to claim 1 is characterized in that: the time that the as cast condition blank is gone into stove and is warmed up to solid solubility temperature was controlled at 30-40 minute; The as cast condition blank goes into stove and is warmed up to the aging temp time to be controlled at 30-40 minute.
3. the thermal treatment process of a kind of ZL 101 A aluminium alloy for automobile wheel hub according to claim 1, it is characterized in that: quenchant is a water, water temperature is controlled at 60-100 ℃, and the cool time was controlled at 1-3 minute, and the time of transferring to the quenching facility from Solution Treatment Furnace is controlled at 20-30 second.
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| CN 201010208926 CN101880844A (en) | 2010-06-23 | 2010-06-23 | Heat treatment process for ZL101A aluminium alloy for automobile wheel hub |
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| CN 201010208926 CN101880844A (en) | 2010-06-23 | 2010-06-23 | Heat treatment process for ZL101A aluminium alloy for automobile wheel hub |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643182A (en) * | 2013-12-16 | 2014-03-19 | 周春梅 | Production process of aluminum-alloy wheel |
| 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 |
| CN103921620A (en) * | 2013-01-11 | 2014-07-16 | Skf公司 | Lightweight hub unit with integrated bearing rings and process for its manufacture |
| CN104975161A (en) * | 2015-07-02 | 2015-10-14 | 中信戴卡股份有限公司 | Thermal treatment method of casted aluminium alloy wheels |
| CN106521378A (en) * | 2016-12-22 | 2017-03-22 | 东南大学 | Energy-saving efficient heat treatment method for aluminum, silicon and magnesium alloy die castings |
| CN107287536A (en) * | 2017-08-23 | 2017-10-24 | 柳州市同进汽车零部件制造有限公司 | The heat treatment method of aluminium alloy automobile hub |
| CN109234651A (en) * | 2018-10-10 | 2019-01-18 | 滁州岳众汽车零部件有限公司 | A kind of energy saving heat treatment method of Press Tools for Automobiles |
| CN114277324A (en) * | 2022-01-06 | 2022-04-05 | 国家高速列车青岛技术创新中心 | Heat treatment method of ZL101A aluminum alloy for resisting marine environment corrosion |
| CN116145055A (en) * | 2023-01-30 | 2023-05-23 | 中信戴卡股份有限公司 | Casting and heat treatment integrated manufacturing method and assembly line equipment for aluminum alloy wheel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999779A (en) * | 2006-12-27 | 2007-07-18 | 戴卡轮毂制造有限公司 | A356 aluminium alloy hub heat treating tech. |
-
2010
- 2010-06-23 CN CN 201010208926 patent/CN101880844A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999779A (en) * | 2006-12-27 | 2007-07-18 | 戴卡轮毂制造有限公司 | A356 aluminium alloy hub heat treating tech. |
Non-Patent Citations (2)
| Title |
|---|
| 《热加工工艺》 20050228 曾建明等 用调压铸造改善ZL101A-T6合金力学性能 第45页，图1 1-3 , 第2期 2 * |
| 《轻合金》 19950731 曾苏民 高性能锻造铝轮毂新工艺的研究 第61页左栏1.2节 1-3 , 第7期 2 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921620A (en) * | 2013-01-11 | 2014-07-16 | Skf公司 | Lightweight hub unit with integrated bearing rings and process for its manufacture |
| CN103921620B (en) * | 2013-01-11 | 2018-01-26 | Skf公司 | Light weight hub unit and its manufacture method with integral bearer ring |
| CN103643182A (en) * | 2013-12-16 | 2014-03-19 | 周春梅 | Production process of aluminum-alloy wheel |
| 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 |
| CN104975161A (en) * | 2015-07-02 | 2015-10-14 | 中信戴卡股份有限公司 | Thermal treatment method of casted aluminium alloy wheels |
| CN106521378A (en) * | 2016-12-22 | 2017-03-22 | 东南大学 | Energy-saving efficient heat treatment method for aluminum, silicon and magnesium alloy die castings |
| CN107287536A (en) * | 2017-08-23 | 2017-10-24 | 柳州市同进汽车零部件制造有限公司 | The heat treatment method of aluminium alloy automobile hub |
| CN109234651A (en) * | 2018-10-10 | 2019-01-18 | 滁州岳众汽车零部件有限公司 | A kind of energy saving heat treatment method of Press Tools for Automobiles |
| CN114277324A (en) * | 2022-01-06 | 2022-04-05 | 国家高速列车青岛技术创新中心 | Heat treatment method of ZL101A aluminum alloy for resisting marine environment corrosion |
| CN114277324B (en) * | 2022-01-06 | 2023-03-10 | 国家高速列车青岛技术创新中心 | Heat treatment method of ZL101A aluminum alloy for marine environment corrosion resistance |
| CN116145055A (en) * | 2023-01-30 | 2023-05-23 | 中信戴卡股份有限公司 | Casting and heat treatment integrated manufacturing method and assembly line equipment for aluminum alloy wheel |
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Open date: 20101110 |