CN104907474A - Aluminum alloy wheel forging forming technology - Google Patents

Aluminum alloy wheel forging forming technology Download PDF

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Publication number
CN104907474A
CN104907474A CN201410603821.4A CN201410603821A CN104907474A CN 104907474 A CN104907474 A CN 104907474A CN 201410603821 A CN201410603821 A CN 201410603821A CN 104907474 A CN104907474 A CN 104907474A
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Prior art keywords
forging
wheel
spinning
blank
forming technology
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CN201410603821.4A
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Inventor
孙惠学
李建
刘鑫鑫
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QINHUANGDAO YANDA MODERN INTEGRATION MANUFACTURING TECHNOLOGY DEVELOPMENT CO LTD
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QINHUANGDAO YANDA MODERN INTEGRATION MANUFACTURING TECHNOLOGY DEVELOPMENT CO LTD
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Priority to CN201410603821.4A priority Critical patent/CN104907474A/en
Publication of CN104907474A publication Critical patent/CN104907474A/en
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Abstract

The invention belongs to an aluminum alloy wheel forging forming technology. The technology process comprises the steps that 1. blank heating is carried out, an aluminum alloy rod is heated to malleable temperature, and rotating forging die preheating temperature is 420 +/- 10 DEG C; 2. upsetting is carried out on a 10000 KN-level pressure machine, and the deforming degree is not smaller than 60%; 3. rotating forging is carried out, an upsetting blank is placed on the rotating forging pressure machine for rotating forging forming, a spoke part is subjected to forming according to a molded line until reserved machine adding is carried out, and a rim part is subjected to preforming until needed size is obtained by rotating pressing; and 4. strong hot rotating pressing is carried out, and hot rotating pressing forming of a rim is completed. The rotating forging pressure machine is used for replacing a die forging pressure machine, production equipment investment cost is lowered, after forging, a dressing process is of no need, a flaring process is of no need, before rotating pressing, hole drilling and pre-machining are of no need, the technology process is shortened, production cost is lowered, production efficiency and the material using rate are improved, and the technology is very suitable for the small-batch individuation market requirement.

Description

A kind of aluminum-alloy wheel forging and forming technology
Technical field
The present invention relates to light alloy wheel manufacturing industry, belong to forging and forming technology and equipment technology field, particularly the near-net shaping technique of aluminum-alloy wheel.
Background technology
Wheel is one of important safety component of automobile, due to the effect of rotary inertia, the lightweight of wheel has remarkable impact for oil consumption, on material with aluminium for steel, become trend, but on forming technology, in nearly 170 aluminum-alloy wheel factories of China, the ancient gravity of most employing or traditional low-pressure casting process, in China, low-pressure casting process introduces for 1988, reflectal wheel is the new wheel moulding process that gets up of development in recent years, compared with cast aluminum alloy wheel, intensity can improve 30%, can loss of weight 10%-15%, light weight effect is remarkable.But the wheel Forging Technology introduced exists, and technological process is long, equipment investment is large, mould amortization high in cost of production shortcoming, the Lumpy demand of after market can not be adapted to, the forging and forming technology of exploitation short route, reduce the investment of molding equipment and die cost, for meeting multi items, the market demand of small lot personalization has important practical value.
Adopt novel former to be shaped wheel, in order to realize the near net-shaped manufacture of wheel, for raising stock utilization, reduce follow-up amount of machining and there is important practical significance.Wheel belongs to revolving body workpieces, gets up the respective advantages of spinning machine and rotary forging presses for wheel shaping, both decreases technological process, and be beneficial to again and realize the near net-shaped of forging, be worth the application of further research promotion.In recent years, the wheel rim that power spinning machine is applied to wheel more and more as the high-end Forming Equipments of a kind of precision was shaped, and had both enhanced wheel rim intensity, and had additionally reduced the machine dosage of wheel rim.
Rotary forging presses is as the novel rotary squeeze equipment of another kind, started in recent years to be applied on commercial trucking industry for wheel forging line, this kind equipment has obvious technical advantage for the forging and molding of wheel, the fish scale skin of aluminium bar material outer surface can be translated into back of the body chamber by this equipment, and can remove in follow-up machined, thus ensure the quality on spoke surface.In addition, its Forming Theory of swaging is different from die forging, in forming process, metal contacts in sector region with mould, because contact area is less, larger deflection can be produced by less power, therefore adopt rotary forging presses to substitute stamp forging hydraulic press and produce wheel hub, greatly reduce the tonnage of former, the tonnage of rotary forging presses is only the 1/10-1/20 of hydraulic press; And the installed capacity of rotary forging presses is little, be only 1/2 of corresponding hydraulic press, reactive power consumption is relatively less, fuselage light self-weight, be only the 1/5-1/8 of corresponding hydraulic press body weight, and factory is relatively low, floor space is little, investment of production equipment declines to a great extent.China has introduced many cover rotary forging presses and has been applied to wheel forging line in recent years.
The Forging Technology that aluminum current alloy wheel often adopts is mainly: bar heats-swages base-blocking-finish-forging-enlarging trimming-cleaning cooling-drill centers-pre-machine and adds-shear spinning, the operations such as follow-up heat treatment, machined and application are coordinated finally to obtain wheel hub product again, blank forging needs to carry out on large tonnage stamp forging hydraulic press, and equipment investment is greatly one of its major defect; Technological process length is another drawback of this introduction technique, and wheel blank also needs before entering spinning work step to carry out enlarging to wheel blank, and pre-machine adds spinning roller and enters cutter groove, also needs to get out centre bore on wheel blank, and technique is loaded down with trivial details, long flow path, and production cost is high.
Application number is 201410262547.9 disclosed " manufacture methods of H type high-magnesium aluminum alloy wheel hub ", this patent by comparison its difference is: (1) this patent adopts the process route of ring-type rolling plate-forging and stamping spoke-spinning wheel rim to produce H type wheel, wherein blank is the rolled plate of ring-type, there is anisotropic mechanical property unavoidably in material, and the blank that this patent uses is different from this patent for casting pole aluminium, the aluminium bar material that this patent adopts needs large forging ratio to be shaped, can obtain the uniform forging of distortion, the anisotropy of mechanical performance index is not obvious; (2) this patent adopts the method for forcing press die forging to manufacture forging stock, and this patent adopts the method for swaging to manufacture forging stock, and also different from above-mentioned patent, by comparison, the former that this patent adopts has the advantages that tonnage is little, installed capacity is few.
Application number is 201410266253.3 disclosed " formula of swaging abbreviated systems ", by comparison, this technique with it difference has 3 points: the bar after heating is directly carried out swaging by (1) this technique, and the present invention is in order to the production efficiency of the deformation extent and swaging operation that ensure blank, before swaging, be provided with pier unskilled workman sequence, deformation extent is not less than 60%; (2) this patent is provided with trimming and punching operation, and the present invention is without trimming operation and punching operation, and directly can carry out hot spinning after swaging, therefore process route is different from above-mentioned patent; (3) this patent is aluminium alloy for the production of the bar of wheel, which kind of manufacture of materials wheel of not mentioned employing in this patent.
Application number “ rotation disclosed in 201310363640.4 turns the processing method of formed clasp wheel hub high accuracy forging "; by comparison; this patent with it difference is: need to carry out enlarging and punching operation after (1) this patent swaging; and the present invention is without the need to enlarging and punching operation, the blank rotating forging stock directly can coordinate with spinning mold and positions; (2), in this patent, the thick power of pier elects 2000 tons as, and in this technique, upset force needed for pier unskilled workman sequence is no more than 1000 tons, and mushrooming deformation degree is not less than 60%; (3) this programme adopts the wheel rim of the process forming wheel of hot spinning, and which kind of method shaping wheel rim of the not mentioned follow-up employing of such scheme, be only the forging after producing forging enlarging, the shaping before the machine that not yet completes adds, therefore integrated artistic route is different from this patent.
Summary of the invention
The invention belongs to wheel and manufacture field, disclose a kind of forming technology of aluminum alloy forged wheel, this forming technology flow process is that a step heats three steps shapings, that is: aluminium bar material heating-pier thick-swaging-powerful hot spinning shaping wheel rim, the notable feature flow process of this technological process is short, is mainly reflected in: rotate forging stock does not need to cut overlap operation, does not need enlarging operation yet, also do not need drill centers and pre-machined sequence before entering powerful hot spinning.
The forming technology flow process of the forging wheel described in claim 1, its heating and jumping-up operation are achieved in that and aluminium alloy bar are heated to malleable temperature, the upper and lower chopping block preheat temperature range used is 250-300 DEG C, needed for jumping-up operation, hydraulic press nominal tonnage is no more than 10000KN, and Upsetting degree is not less than 60%.
The forming technology flow process of the forging wheel described in claim 1, the shaping at its spoke position and the preform at wheel rim position are achieved in that the blank through jumping-up carries out shaping of swaging on rotary swager, the nominal tonnage of rotary forging presses is not less than 2500KN, swaging mold preheating temperature is 420 ± 10 DEG C, after swaging, spoke position press-type line is shaped to and stays machine dosage, the spoke of forging stock and wheel rim junction are provided with spinning radial location band, this positioning belt coordinates with the upper and lower mould of spinning, and fit clearance is 0.1-0.2mm.
The forming technology flow process of the forging wheel described in claim 1, its wheel rim position realizes like this being shaped: the wheel blank through swaging directly once completes the shaping of wheel rim hot spinning on power spinning machine, spinning mold preheat temperature is 250-300 DEG C, spinning roller preheat temperature 140 DEG C ± 10 DEG C, wheel rim thickness is threaded to and only stays machine dosage.
The beneficial effect that this patent brings is: the step that the present invention proposes heats the aluminum-alloy wheel Forging Technology that three steps are shaped, there is the distinguishing feature that technological process is short, equipment investment is little, do not need before the forging stock spinning that swaging obtains to carry out cutting overlap operation, enlarging operation is not needed yet, also do not need drill centers and pre-machined sequence, shorten technological process, improve production efficiency and stock utilization, this technique is particularly suitable for the personalized wheel of small lot and produces, this technique is not only suitable for aluminium alloy plain edition forging wheel, is also applicable to the forging and molding of H type wheel.
Accompanying drawing explanation
Fig. 1 present invention process is used for H type wheel forming technology schematic diagram.
Fig. 2 present invention process is used for motorbus wheel forming technology schematic diagram.
(the present embodiment further illustrates of the present invention, instead of to any restriction that the present invention makes) is described in detail with regard to detailed description of the invention below in conjunction with accompanying drawing.
By reference to the accompanying drawings 1 and accompanying drawing 2 pairs of detailed rules for the implementation be described, for 22.5 cun of motorbus wheels that material be 20 cun of H type wheels of 6061 aluminium alloys and material is 7A04, the implementation process of this technique is introduced respectively.
H type aluminum alloy forged wheel forming process is as follows:
(1) chopping block up and down first aluminum alloy blank, pier slightly used, swaging mould and spinning mold carry out preheating, its aluminium alloy (6061) bar heating-up temperature is 490 ± 5 DEG C, the upper and lower chopping block preheat temperature that pier slightly uses is 260 ± 10 DEG C, swaging mold temperature is: 420 ± 10 DEG C, spinning mold temperature is 250 ± 10 DEG C, spinning roller preheat temperature 140 DEG C ± 10 DEG C;
(2) the H type wheel wheel pier unskilled workman sequence of this money 20 cun selects 8000KN hydraulic press, after the mould that each operation uses installs, the blank heated is moved to that the workbench of 8000KN hydraulic press to carry out pier thick by robot, Upsetting degree requires to be not less than 60%, before jumping-up, billet size is: Φ 203X440 mm(8 cun of blank), after pier is thick, billet size is: Φ 350X160 mm;
(3) 3500KN rotary forging presses selected by this money 20 cun of H type wheels, blank after robot is thick by pier moves on swaging mould, blank follows lower main axis and counterdie High Rotation Speed subsequently, rotating speed is 450RPM, upper main shaft drives patrix axially to do feed motion under the drive of slide block, after patrix contacts with blank in contact area to workpiece exert pressure deformation force make it produce plastic deformation, along with the axial feed of patrix, blank continues distortion and constantly accumulates and be filled to mold cavity gradually, the spoke of forging stock and wheel rim junction are provided with spinning radial location band, on this positioning belt and spinning, bed die coordinates, fit clearance is 0.1-0.2mm, after swaging, robot coordinates counterdie ejector to complete discharging,
(4) this technique does not need to carry out cutting overlap, enlarging, boring and pre-machined sequence, the blank rotated after forging is directly placed on spinning machine bed die, mould coordinates with blank positioning belt and carries out radial location, spinning machine selects the vertical strengthened heat of three spinning rollers to revolve spinning machine, spinning tail top is equipped with patrix, patrix moves down blank compacting, mold bottom contacts with blank positioning belt carries out radial location, under the effect of tail top power, forging stock is fastened between upper and lower mould, and along with bed die together high-speed rotation, first No. 1 spinning roller contacts with blank, from wheel rim centre, blank is rived, then 2, No. 3 spinning rollers coordinate No. 1 spinning roller to carry out spinning along the direction, both sides of spoke to blank according to preprogrammed program respectively, after wheel rim spinning, ejector is ejected, because this operation adopts powerful hot spinning, the resistance of deformation of material significantly reduces, mould and spinning roller life-span significantly improve,
(5) wheel blank after spinning through normal process steps such as follow-up heat treatment, machined, applications, finally obtains wheel product again.
Aluminium alloy passenger vehicle forging wheel forming process is as follows:
(1) first chopping block up and down, swaging mould and spinning mold that aluminum alloy blank (7A04), pier slightly use are heated, wherein blank temperature is 430 ± 5 DEG C, the upper and lower chopping block preheat temperature that pier slightly uses is 280 ± 10 DEG C, swaging mold temperature is: 420 ± 10 DEG C, spinning mold temperature is 270 ± 10 DEG C, spinning roller preheat temperature 140 DEG C ± 10 DEG C;
(2) wheel of passenger vehicle of this money 22.5 cun selects 8000KN hydraulic press, after the mould that pier is thick, swaging and spinning operation use installs, the workbench of the 8000KN hydraulic press that the blank heated moves to by robot carries out pier thick, Upsetting degree requires to be not less than 60%, before jumping-up, billet size is: Φ 229X440mm(9 cun of blank), after pier is thick, billet size is: Φ 350X220 mm;
(3) wheel of passenger vehicle of this money 22.5 cun selects 3500KN rotary forging presses, after pier unskilled workman sequence, robot blank moves to the locating slot center of rotary swage tool, blank follows lower main axis and counterdie High Rotation Speed subsequently, upper main shaft drives patrix axially feeding, after patrix contacts with blank in contact area to workpiece exert pressure deformation force make it produce plastic deformation, along with the axial feed of patrix, blank continues distortion and constantly accumulates and be filled to mold cavity gradually, the spoke of forging stock and wheel rim junction are provided with spinning radial location band, on this positioning belt and spinning, bed die coordinates, fit clearance is 0.1-0.2mm, after swaging, robot coordinates counterdie ejector to complete discharging,
(4) this technique does not need to carry out cutting overlap, enlarging, boring and pre-machined sequence, the blank rotated after forging is directly placed on spinning machine bed die, the powerful heat of three spinning rollers is selected to revolve spinning machine, spinning tail top moves down blank compacting, mould coordinates with blank positioning belt and carries out radial location, under the effect of tail top power, forging stock is fastened between upper and lower mould, and along with bed die together high-speed rotation, forging stock is along with counterdie high-speed rotation subsequently, No. 1, No. 2 and No. 3 three spinning rollers carry out spinning from bcad seats position, spoke side to blank according to preprogrammed program respectively, after wheel rim spinning, ejector is ejected, because this operation adopts powerful hot spinning, therefore the resistance of deformation of material significantly reduces, mould and spinning roller life-span significantly improve,
(5) 22.5 cun of wheel blanks after spinning, again through normal process steps such as follow-up heat treatment, machined, applications, finally obtain wheel product.

Claims (4)

1. the invention belongs to wheel and manufacture field, disclose a kind of forming technology of aluminum alloy forged wheel, this forming technology flow process is that a step heats three steps shapings, that is: aluminium bar material heating-jumping-up-swaging-powerful hot spinning shaping wheel rim, the notable feature of this technological process is: rotate forging stock does not need to cut overlap operation, does not need enlarging operation yet, also do not need drill centers and pre-machined sequence before entering powerful hot spinning.
2. the forming technology flow process of the forging wheel described in claim 1, its heating and jumping-up are characterised in that: bar is heated to malleable temperature, the upper and lower chopping block used is public, different size wheel-type is not needed to change, chopping block preheat temperature range is 250-300 DEG C, needed for jumping-up operation, hydraulic press nominal tonnage is no more than 10000KN, and Upsetting degree is not less than 60%.
3. the forming technology flow process of the forging wheel described in claim 1, it is characterized in that: the blank through jumping-up carries out shaping of swaging on rotary forging presses, the nominal tonnage of rotary forging presses is not less than 2500KN, swaging mold preheating temperature is 420 ± 10 DEG C, after swaging, spoke position press-type line is shaped to and stays machine dosage, to the size needed for wheel rim position preformed to spinning, the spoke of forging stock and wheel rim junction are provided with spinning radial location band, this positioning belt coordinates with the upper and lower mould of spinning, and fit clearance is 0.1-0.2mm.
4. the forming technology flow process of the forging wheel described in claim 1, it is characterized in that: the wheel blank through swaging directly once completes the shaping of wheel rim hot spinning on power spinning machine, mould coordinates with forging stock positioning belt and carries out radial location, spinning mold preheat temperature is 250-300 DEG C, wheel rim thickness is threaded to by spinning machine and only stays machine dosage, so far forming technology completes, and under wheel manufacture, stepping enters heat treatment, machine adds and application subsequent handling.
CN201410603821.4A 2014-11-03 2014-11-03 Aluminum alloy wheel forging forming technology Pending CN104907474A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105268903A (en) * 2015-11-04 2016-01-27 浙江巨科实业股份有限公司 Forging forming method of aluminum alloy hub
CN105563044A (en) * 2016-02-01 2016-05-11 秦皇岛戴卡兴龙轮毂有限公司 H-shaped aluminum alloy wheel forging and forming process
CN106002104A (en) * 2016-06-23 2016-10-12 无锡康柏斯机械科技有限公司 Production process for hub
CN106002105A (en) * 2016-06-23 2016-10-12 无锡康柏斯机械科技有限公司 Production and processing technology for hub
CN106041423A (en) * 2016-06-23 2016-10-26 无锡康柏斯机械科技有限公司 Production process of aluminum alloy hub
WO2017063249A1 (en) * 2015-10-16 2017-04-20 江苏新创雄铝制品有限公司 Preparation method for cold-worked seamless aluminum alloy hub
CN108405623A (en) * 2018-03-01 2018-08-17 西安建筑科技大学 A method of Mannesmann effect is studied by rotary compression
CN108500174A (en) * 2018-02-27 2018-09-07 福建泉海工贸投资集团有限公司 A kind of wheel body forming method
CN109158470A (en) * 2018-09-04 2019-01-08 安徽耀强精轮机械有限公司 A kind of wheel hub shovel rotation forming technology
CN110814245A (en) * 2019-11-06 2020-02-21 江阴市恒润环锻有限公司 Forging method of aluminum alloy forging
CN112059091A (en) * 2020-10-10 2020-12-11 山东大学 Disc type aluminum alloy automobile hub forging die structure and forging method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017063249A1 (en) * 2015-10-16 2017-04-20 江苏新创雄铝制品有限公司 Preparation method for cold-worked seamless aluminum alloy hub
CN105268903A (en) * 2015-11-04 2016-01-27 浙江巨科实业股份有限公司 Forging forming method of aluminum alloy hub
CN105563044A (en) * 2016-02-01 2016-05-11 秦皇岛戴卡兴龙轮毂有限公司 H-shaped aluminum alloy wheel forging and forming process
CN106002104A (en) * 2016-06-23 2016-10-12 无锡康柏斯机械科技有限公司 Production process for hub
CN106002105A (en) * 2016-06-23 2016-10-12 无锡康柏斯机械科技有限公司 Production and processing technology for hub
CN106041423A (en) * 2016-06-23 2016-10-26 无锡康柏斯机械科技有限公司 Production process of aluminum alloy hub
CN108500174A (en) * 2018-02-27 2018-09-07 福建泉海工贸投资集团有限公司 A kind of wheel body forming method
CN108405623A (en) * 2018-03-01 2018-08-17 西安建筑科技大学 A method of Mannesmann effect is studied by rotary compression
CN108405623B (en) * 2018-03-01 2019-09-03 西安建筑科技大学 A method of Mannesmann effect is studied by rotary compression
CN109158470A (en) * 2018-09-04 2019-01-08 安徽耀强精轮机械有限公司 A kind of wheel hub shovel rotation forming technology
CN110814245A (en) * 2019-11-06 2020-02-21 江阴市恒润环锻有限公司 Forging method of aluminum alloy forging
CN110814245B (en) * 2019-11-06 2021-05-14 江阴市恒润环锻有限公司 Forging method of aluminum alloy forging
CN112059091A (en) * 2020-10-10 2020-12-11 山东大学 Disc type aluminum alloy automobile hub forging die structure and forging method

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Application publication date: 20150916