CN108588391A - A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process - Google Patents
A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process Download PDFInfo
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- CN108588391A CN108588391A CN201810405536.XA CN201810405536A CN108588391A CN 108588391 A CN108588391 A CN 108588391A CN 201810405536 A CN201810405536 A CN 201810405536A CN 108588391 A CN108588391 A CN 108588391A
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- Prior art keywords
- wheel hub
- aluminium alloy
- heat treatment
- treatment process
- alloy wheel
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Classifications
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Abstract
The invention discloses a kind of method handling aluminium alloy wheel hub using energy-saving and short-flow heat treatment process, the present invention changes solid solubility temperature and time, aging temp and time on the basis of traditional T6 heat treatment process.Through A356 aluminium alloy wheel hubs made from present invention process compared with the A356 aluminium alloy wheel hubs that current tradition T6 heat treatment process produces, performance is significantly improved, and use this process, not only the time shortens, and production cost reduces, possess wide production application foreground in aluminium alloy wheel hub market, is suitable for large-scale industrial production.
Description
Technical field
The invention mainly relates to the technical fields of automotive hub heat treatment process, and in particular to a kind of to use energy-saving and short-flow
The method that heat treatment process handles aluminium alloy wheel hub.
Background technology
A356 aluminium alloys as a kind of hypoeutectic al-si alloy, because its good casting fluidity, preferable mechanical property,
Low coefficient of thermal expansion and good corrosion resistance and become widely used cast aluminium alloy gold.And it more and more answers
Auto industry and aerospace field are used, mitigates weight under conditions of proof strength to save material and reduce running
Energy expenditure.
Under normal condition, the eutectic silicon in A356 alloy structures is precipitated with needle-shaped, rodlike or lath-shaped, in stress mistake
It is also easy to produce stress concentration in journey, there is the effect of isolating to matrix, the deformation of alloy and mechanical property is caused to be very limited.
Main intensified element is Si in A356 alloys, and Mg etc. can dissolve in aluminum substrate in solution treatment, form oversaturated α（Al）, when
Mg2Si phases are precipitated during effect, and the strong hardness of alloy improves, since Mg2Si phases are precipitated slowly at room temperature, generally use solid solution
The T6 heat treatment process of+timeliness.
In existing open file, a kind of heat treatment process of A356.2 aluminium alloy wheel hubs ---
201410519570.1 for technical problem set forth above, reasonably improved,
Solution treatment：538 DEG C of temperature keeps the temperature 300min；
Ageing treatment：145 DEG C of temperature aging temp keeps the temperature 180min；
On the basis of the disclosure, rational modification is carried out to heat treatment process, in the heat treatment process, further
Promote the processing technology of A356.2 aluminium alloy wheel hubs.
Invention content
Invention broadly provides it is a kind of using energy-saving and short-flow heat treatment process handle aluminium alloy wheel hub method, to
Solve technical problem mentioned above in the background art.
The optimization process scheme that the present invention is heat-treated is：545℃*240min+145℃*120min.
The present invention solve the technical solution that uses of above-mentioned technical problem for：
The concrete technology flow process that the present invention takes is as follows：
Step 1, shove charge
The aluminium alloy wheel hub that pending low pressure casting produces is pushed into Solution Treatment Furnace in order using fork truck；
Step 2, solution treatment
（1）After step 1 heat-treatment furnace is shut, igniting heating of supplying gas, while starting fan and temperature control instrument；
（2）Heating parameters are set by temperature control instrument, warming temperature gradient is 200 DEG C/h, and solid solubility temperature is set as 535-545
℃；
（3）Soaking time is 24-270min, during incubation correction of timing furnace operation regional temperature；
Step 3, cooling of coming out of the stove
After heat preservation, wheel is come out of the stove rapidly with crane, it is cooling in water of quenching；
Step 4, wheel hub distortion correction
Correction wheel hub deformation immediately after quenching, wheel hub is put into correction mold and applies pressure, corrects its deformation position；
Step 5, ageing treatment
According to step 2 processing mode, holding temperature is set as 135-145 DEG C, soaking time 120-140min.
Specifically, by multigroup Experimental comparison, optimum temperature control when the solution treatment is at 545 DEG C, best guarantor
Warm time control is in 240min；At 145 DEG C, the control of best soaking time exists for optimum temperature control when the ageing treatment
120min。
The process is mainly processed by being directed to A356 aluminium alloy wheel hubs, and in process, step 2
In, the quenching delay time is less than 15s, 70 DEG C ~ 80 DEG C of hardening media temperature range, also, the energy-saving and short-flow heat treatment process
Intensity is mainly improved by the method for controlling solid solution aging precipitated phase.
Compared with prior art, beneficial effects of the present invention are embodied in：
（1）The present invention is since designed heat treatment process compared to traditional T6 heat treatment solution times shortens 60min, when timeliness
Between shorten 30min, amount to shorten time 90min；
（2）The present invention is since designed heat treatment process is compared to 5 DEG C of traditional T6 heat treatment solid solubility temperatures raising, aging temp
20 DEG C are improved, solid solubility temperature coordinates higher aging temp, and more ageing strengthening phase Mg2Si, Al3Ti can be precipitated；
（3）The invention reside in using control solid solubility temperature and timeliness and time, carried by way of by raising precipitated phase number
High intensity, the tensile strength range of A356 aluminium alloy wheel hubs obtained are more than tradition T6 heat treatment process up to 265-303 MPa
The A356 aluminium alloy wheel hub mechanical properties of processing（A356 alloy T6 state tensile strength is generally not more than 270MPa）.
Specific implementation mode
It will be further illustrated the present invention below by specific embodiment, those skilled in the art of the present technique should can manage
Solution, embodiment are only used for the scope of the claims that is schematically illustrate, and cannot limiting the present invention.
With reference to the specific preparation parameter of each embodiment in Tables 1 and 2, the invention will be further described.
The relative influence for considering heat treatment reinforcement mechanism determines solid solubility temperature, solution time, aging temp, timeliness
Time is four empirical factors of this subject study（It is denoted as A B C D）, each factor respectively takes three different levels（It is denoted as 1
2 3）It is tested, specific experiment factor and level are shown in Table shown in -1：
- 1 related experiment factor level table of table
According to upper table related experiment factor and level, if being tested to all levels of correlative factor, totally 34 groups of required experiment is
Experimental group number is reduced, orthogonal experiment scheme is selected.Experimental designs select the horizontal quadratures tables (L934) such as four factors, specific real
Proved recipe case is as follows：
The experiment parameter of 2 embodiment 1-9 of table
Embodiment 1：
A kind of method in the present embodiment using short route for A356 alloy wheel hub heat treatment process is as follows：
Step 1, shove charge；
The A356 aluminium alloy wheel hubs that pending low pressure casting produces are pushed into Solution Treatment Furnace in order using fork truck.
Step 2, solid solution operation；
（1）After step 1 heat-treatment furnace is shut, igniting heating of supplying gas, while starting fan and temperature control instrument；
（2）Heating parameters are set by temperature control instrument, warming temperature gradient is 200 DEG C/h, and solid solubility temperature is set as 545 DEG C；
（3）Soaking time is 310min, during incubation correction of timing furnace operation regional temperature.
Step 3, cooling of coming out of the stove；
After heat preservation, wheel is come out of the stove rapidly with crane, it is cooling in water of quenching
Step 4, wheel hub distortion correction；
Correction wheel hub deformation immediately after quenching, wheel hub is put into correction mold and applies pressure, corrects its deformation position.
Step 5, ageing practice；According to step 2 mode of operation, holding temperature is set as 135 DEG C, soaking time is
140min。
Performance evaluation is carried out to sample made from the present embodiment：
" 50KN SANS CMT-5105 " electronic universal tester is used to measure the tensile strength of sample as 275MPa.
Embodiment 2：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 2：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 271MPa.
Embodiment 3：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 3：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 303MPa.
Embodiment 4：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 4：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 298MPa.
Embodiment 5：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 5：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 294MPa.
Embodiment 6：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 6：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 295MPa.
Embodiment 7：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 7：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 279MPa.
Embodiment 8：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 8：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 265MPa.
Embodiment 9：
The preparation process of the present embodiment is referring to embodiment 1, the difference is that the difference of preparation parameter, is specifically shown in Table 1.
Performance evaluation is carried out to sample made from embodiment 9：
" 50KN SANS CMT-5105 electronic universal testers " is used to measure the tensile strength of sample as 270MPa.
The tensile strength of hypoeutectic Al-Si alloy produced by the present invention ranging from 265 ~ 303MPa is better than general T6 states
The mechanical property of A356 alloys（A356 alloy T6 state tensile strength is generally not more than 240 MPa）, the present invention in alloy be heat-treated
Method is simple, and equipment cost is cheap, and cost control is more advantageous, is conducive to later stage large batch of industrialized production.
The above-mentioned description to embodiment is understood for the ease of those skilled in the art and using invention.It is ripe
Various equivalent modifications can also be made or be replaced under the premise of without prejudice to the invention spirit by knowing those skilled in the art
It changes, and applies the general principles described here to other examples without having to go through creative labor.Therefore, of the invention
Creation is not limited to the embodiment, and those skilled in the art's announcement according to the present invention does not depart from scope of the invention institute
The equivalent modification or replacement made is all contained in the application claim limited range.
Claims (6)
1. a kind of method handling aluminium alloy wheel hub using energy-saving and short-flow heat treatment process, main flow is shove charge-solid solution
Handle-come out of the stove cooling-wheel hub distortion correction-ageing treatment, which is characterized in that
Solution treatment：535-545 DEG C of temperature keeps the temperature 240-310min；
Ageing treatment：135-145 DEG C of temperature aging temp keeps the temperature 120-140min.
2. a kind of method that aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process according to claim 1,
It is characterized in that, at 545 DEG C, best soaking time is controlled in 240min the optimum temperature control when solution treatment；It is described
At 145 DEG C, best soaking time is controlled in 120min for optimum temperature control when ageing treatment.
3. a kind of method that aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process according to claim 1,
It is characterized in that, the heat treatment process of the aluminium alloy wheel hub is as follows：
Step 1, shove charge
The aluminium alloy wheel hub that pending low pressure casting produces is pushed into Solution Treatment Furnace in order using fork truck；
Step 2, solution treatment
After step 1 heat-treatment furnace is shut, igniting heating of supplying gas, while starting fan and temperature control instrument；
（2）Heating parameters are set by temperature control instrument, warming temperature gradient is 200 DEG C/h, and solid solubility temperature is set as 545 DEG C；
（3）Soaking time is 240min, during incubation correction of timing furnace operation regional temperature；
Step 3, cooling of coming out of the stove
After heat preservation, wheel is come out of the stove rapidly with crane, it is cooling in water of quenching；
Step 4, wheel hub distortion correction
Correction wheel hub deformation immediately after quenching, wheel hub is put into correction mold and applies pressure, corrects its deformation position；
Step 5, ageing treatment
According to step 2 processing mode, holding temperature is set as 145 DEG C, soaking time 120min.
4. a kind of method that aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process according to claim 2,
It is characterized in that, in the step 2, the quenching delay time is less than 15s, 70 DEG C ~ 80 DEG C of hardening media temperature range.
5. a kind of method that aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process according to claim 2,
It is characterized in that, energy-saving and short-flow heat treatment process is to improve intensity by controlling the method for solid solution aging precipitated phase.
6. a kind of method that aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process according to claim 2,
It is characterized in that, above-mentioned heat treatment process processing is processed mainly for A356 aluminium alloy wheel hubs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810405536.XA CN108588391A (en) | 2018-04-29 | 2018-04-29 | A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810405536.XA CN108588391A (en) | 2018-04-29 | 2018-04-29 | A method of aluminium alloy wheel hub is handled using energy-saving and short-flow heat treatment process |
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| CN108588391A true CN108588391A (en) | 2018-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109234652A (en) * | 2018-10-30 | 2019-01-18 | 烟台路通精密科技股份有限公司 | A kind of aluminium alloy castings short route heat treatment method |
| CN109402333A (en) * | 2018-12-13 | 2019-03-01 | 安徽优合科技股份有限公司 | A kind of automotive hub heat treatment method |
Citations (2)
| 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. |
| CN102912265A (en) * | 2011-08-02 | 2013-02-06 | 大亚科技股份有限公司 | Aluminum alloy wheel heat treatment process |
-
2018
- 2018-04-29 CN CN201810405536.XA patent/CN108588391A/en active Pending
Patent Citations (2)
| 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. |
| CN102912265A (en) * | 2011-08-02 | 2013-02-06 | 大亚科技股份有限公司 | Aluminum alloy wheel heat treatment process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109234652A (en) * | 2018-10-30 | 2019-01-18 | 烟台路通精密科技股份有限公司 | A kind of aluminium alloy castings short route heat treatment method |
| CN109402333A (en) * | 2018-12-13 | 2019-03-01 | 安徽优合科技股份有限公司 | A kind of automotive hub heat treatment method |
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Application publication date: 20180928 |
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