CN1233548A - Flash butt welding technology for aluminium alloy wheel rim of automobile and motor cycle - Google Patents
Flash butt welding technology for aluminium alloy wheel rim of automobile and motor cycle Download PDFInfo
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- CN1233548A CN1233548A CN 99113599 CN99113599A CN1233548A CN 1233548 A CN1233548 A CN 1233548A CN 99113599 CN99113599 CN 99113599 CN 99113599 A CN99113599 A CN 99113599A CN 1233548 A CN1233548 A CN 1233548A
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Abstract
The present invention relates to the flash welding technology of aluminium alloy wheel of vehicle and motor cycle, its technological process is as follows: pretreatment-setting welding condition clamping flashing-top forging-pressure maintaing declamping-finishing. The present invention is good in effect.
Description
What the present invention relates to is a kind of automobile, motorcycle aluminium alloy wheel flash of light welding procedure, belongs to the Welding Technology and Equipment field.
The welding great majority of automobile of the prior art, motorcycle wheel rim are the welding of steelwork, the flash welding connection technology that a small amount of report aluminum-alloy wheel is also arranged, as bicycle rim flash welding connection technology, but the cycle wheel cross section is less, and the requirement of strength of butt joint is very low.Situation from retrieval, in aluminium alloy flash of light welding field, some technology of Japan have an application industrial, flash butt welding connection technology as Japanese JAJ831049-KoKai almag, main its joint of setting forth has the characteristic of JIS A 5454H-34 material and JIS A 5454O (annealing) state, this kind institutional framework is suitable for making automobile, two formula wheel rims of motorcycle, does not see in the document that it discusses from technology.And for example Japanese JA83161747A-KoKai has set forth the alloy of a specific composition, by changing the wherein content of individual element, can improve the mechanical performance of flash welded tool joint, it is the patented technology of material aspect, Japanese Patent No. JE91220063 high-strength aluminum alloy wheel rim manufacturing process one literary composition is also described the main technique flow process that aluminium alloy rim is made, but does not relate to the concrete technology content of concrete flash of light welding.84 years J JPn of Japanese magazine Weld sot for another example, illustrate in " the welded processing of the aluminium alloy of automobile, motorcycle, bicycle " literary composition that 53 (3) 139-142 deliver the solder technology of aluminium alloy has been carried out extensive studies, but this research only limits in theory, and is also quite limited from using.The technology that flash of light is welded to aluminium alloy both at home and abroad all has research in sum, but the practical application of relevant technology on automobile, bike wheel do not appear in the newspapers.
The objective of the invention is to: overcome deficiency of the prior art; solve low, the defectives such as cost is high, quality instability of efficient in automobile, the motorcycle aluminium alloy wheel welding process; provide a kind of any additives (gas) protection of not using, the new automobile that the face quality can be effectively controlled and cost is low, simple to operate, motorcycle aluminium alloy wheel flash of light welding procedure.
Technical scheme of the present invention is described below in conjunction with the accompanying drawings:
Fig. 1 is a workpiece both ends of the surface angle α schematic diagram before the clamping.
Fig. 2 is workpiece both ends of the surface parallel clearance β behind the clamping
1Schematic diagram.
Fig. 3 is workpiece two sides magnitude of misalignment β behind the clamping
2Schematic diagram.
The present invention is mainly by pre-treatment, welding condition is set, clamping, flash of light, upset, pressurize, release clamp, the finishing supervisor forms, flash of light, two successive stages of upset form group flashing light butt joint forming process, and pressurize, the release clamp supervisor then is necessary in the welding, workpiece advances after utilizing plugged, and the workpiece both ends of the surface are slightly contacted, form many small contact points with very large resistance between both ends of the surface, under the effect of large electric current, instant melting and form the liquid lintel of continuous end face, gradually propelling along with workpiece, liquid lintel constantly forms and continuous explosion forms flash of light, and in this process, emit a large amount of heat, make the workpiece both ends of the surface that a suitable Temperature Distribution band be arranged, promote the moving anchor clamps formation closed interface that advances at utmost speed in good time, liquid metal and oxide are constantly outwards got rid of, acquisition is than the joint of compact tissue state, by pressurize 5-20s, after metal is solidified fully, automatically unclamp again anchor clamps, at last as requested finishing, finish whole technical process, the concrete technology flow process is as follows: pre-treatment → welding condition setting → clamping workpiece → flash of light → upset → pressurize → release clamp → finishing.
For obtaining higher-strength and steady quality joint, must carry out pre-treatment to workpiece, remedy the flash of light scaling loss amount in the flash of light process, be fit to workpiece and the contact area of electrode when clamping, satisfy workpiece and interelectrode electric conductivity, make the wheel after the welding reach a predetermined circumference, must be when cutting workpiece, do certain processing (such as Fig. 1) of cutting off angle [alpha], should notice that in clamping process the workpiece both ends of the surface have certain parallel clearance (such as Fig. 2), during the flash of light burning, make between the workpiece both ends of the surface lintel explosion even, the scaling loss amount uniformity on the cross section, the Temperature Distribution band on the workpiece both ends of the surface is suitable. Workpiece need be controlled (such as Fig. 3) in the magnitude of misalignment between both ends of the surface behind the clamping, and the mechanical performance and the joint welding slag after the welding that improve joint are symmetrical, satisfies the standard of machine finish welding slag, makes the flat appearance of joint attractive in appearance.
Before weld job, the setting of carrying out welding condition is the important step of flash of light welding, and purpose is that a series of parameter is done best combination, reaches required mechanical strength properties to guarantee joint.Two interelectrode distance overhangs about when condition enactment, should selecting according to difformity and sectional area, then overhang reasonably is segmented into flash loss and upset allowance, simultaneously when selecting overhang, should strictly consider that moving anchor clamps have the original position of the wedge (or cam) of slope curve when advancing, to obtain a required flash of light initial velocity and flash of light termination speed and upset speed, and the cylinder pressure when promoting moving anchor clamps and advance by control, obtain a required upset force.The clamping force of workpiece is to realize by the pressure of control hydraulic system.
Overhang is control flash loss and upset allowance and the reasonable important parameter that distributes of workpiece both ends of the surface temperature, and flashing speed is an important parameter that guarantees stable flash of light, the later stage speed of particularly glistening is too small can to produce the flash of light interruption, easily produce the oxide-film interlayer defect in the joint, and excessive velocities, can make the temperature band of workpiece both ends of the surface narrow down, strength of joint descends.When upset began, moving anchor clamps advanced at utmost speed suddenly the port gap are dwindled, and crossed beam section and increased and no longer explosion, and flash of light is stopped, and when upset finishes, obtained suitable plastic deformation in the workpiece end face zone, promoted the weld seam recrystallization process.When using current-on upset, need the strict control time, in order to avoid joint produces the burning defective.Current density has significant impact to the heating of weldment, and particularly during welded closed shape wheel, current loss is quite big, must do certain compensation according to size, the thickness in cross section, and flash of light stage electric current is not a constant, allows certain fluctuation.According to the requirement of technological process, then determine following process conditions:
1. overhang 20-25mm
2. flash loss 12-15mm
3. upset allowance 6-12mm
4. initial velocity 0-2mm/s glistens
5. the termination speed of glistening 20-25mm/s
6. upset speed 120-180mm/s
7. current density 50-66A/mm
2
8. upset current time 0-2s
9. voltage 12V
10. upsetting force 5-8 * 10
4N
11. clamping force 10-15 * 10
4N
According to technological process or process conditions, should satisfy following condition before and after the clamping workpiece:
1. the preceding workpiece both ends of the surface angle α of clamping is 1-4 °
2. workpiece both ends of the surface parallel clearance β behind the clamping
10.2-1mm
3. workpiece two sides misplacement space β behind the clamping
2Less than 0.5mm
Below in conjunction with embodiment the present invention is further described:
The invention provides three embodiment and all adopt same technological process and technological specification,
The established technology flow process is: pre-treatment → welding condition setting → clamping workpiece → flash of light
→ upset → pressurize → release clamp → finishing
Technological specification is: workpiece both ends of the surface parallel clearance is β behind the clamping
10.2-1mm, workpiece two sides magnitude of misalignment β behind the clamping
2Less than 0.5mm, voltage 12V.Three other different technology conditions of embodiment are respectively the following table data:
| Technological specification | Embodiment one | Embodiment two | Embodiment three |
| 1, overhang | ??????20mm | ?????23mm | ?????25mm |
| 2, flash loss | ??????12mm | ?????14mm | ?????15mm |
| 3, upset allowance | ??????6mm | ?????9mm | ?????12mm |
| 4, flash of light initial velocity | ??????0.5mm/s | ?????1mm/s | ?????2mm/s |
| 5, flash of light termination speed | ??????20mm/s | ?????22mm/s | ?????25mm/s |
| 6, upset speed | ??????120mm/s | ?????150mm/s | ?????180mm/s |
| 7, current density | ??????50A/mm 2 | ?????58A/mm 2 | ?????66A/mm 2 |
| 8, upset current time | ??????0s | ?????1s | ?????2s |
| 9, upsetting force | ??????5×10 4N | ?????6.5×10 4N | ?????8×10 4N |
| 10, clamping force | ?????10×10 4N | ????13×10 4N | ?????15×0 4N |
| 11, workpiece both ends of the surface angle α before the clamping | ?????1° | ????3° | ?????4° |
More than three examples, be assembled into JH90, PTS125, XF125B bike wheel through technology welding product of the present invention.
1. product detects the regulation that reaches QC/T29117.15-93 " motorcycle and trail bike product quality inspection, light alloy wheel performance rating method " through Chinese Motorcycle Development wheel mass Nanchang supervision and inspection.As following table:
2. the wheel to above three embodiment detects in destructive testing:
The wheel of three kinds of specifications loads and all plastic deformation occurs greater than 30.1KN, and its loading force is much higher than standard, and the wheel fracture is all in the welding position, and appears at the heat affected area of two sides, illustrates that the intensity of joint has reached the intensity of mother metal.
3. single wheel rim being carried out set deformation volume (HB＞80) detects, according to the GB9769-88 standard, 1.4 when * 17 " specification loads 1450N; pressurize 2 minutes, after the unloading, set deformation volume is 0.3 to be lower than standard 70%; 1.6 * 17 " when specification loads 1850N, pressurize 2 minutes, after the unloading, set deformation volume is 0.5 to be lower than standard 50%.
The present invention has substantial characteristics with significant progressive, compares with present prior art, has significant effect. The invention solves the key technology of automobile, motorcycle aluminium alloy wheel production, the new stage that makes automobile, bike wheel develop into the Welded wheel by traditional steel part welding wheel, but wheel surface is done the model change that automobile, motorcycle industry have been accelerated in color diversification (present car load die wheel is without this effect) after the anodized, the car load class is improved, the requirement of pre-treatment and clamping workpiece standard has been proposed, make between the flash of light stage end face after the energising liquid lintel explosion even, scaling loss amount uniformity on the cross section, reach Temperature Distribution band suitable on the workpiece both ends of the surface, for next step upset has been created better condition. The welding conditions that the flash loss that the present invention has adopted a best and upset allowance and flashing speed match with upset speed, in welding process, solved the wheel of the complex profile of the inconsistent muscle wall composition of various irregular cinclides shapes and thickness, be prone to the quality problems of welding hickie during welding, control produces penetrability welding hickie, slag inclusion and the phenomenon of the Joint Cracking that causes especially effectively. The present invention is also according to the structure of various electrodes, the pass of having determined upset force and clamping force is 1: 2, solved because of wear to electrodes or workpiece size overproof, and cause compression not firm, skid during upset and weigh the difficult point of workpiece wounded, and controlled the problem that causes the welding dislocation when workpiece is pushed ahead in the welding process, improved the strength character of joint inherence. Simultaneously the present invention also may be used on the welding of other Al-alloy parts.
Claims (3)
1, a kind of automobile, motorcycle aluminium alloy wheel flash of light welding procedure is characterized in that technological process is as follows: pre-treatment → welding condition setting → clamping workpiece → flash of light → upset → pressurize → release clamp → finishing.
2, this automobile according to claim 1, motorcycle aluminium alloy wheel flash of light welding procedure, its feature is that also process conditions are:
Overhang 20-25mm
Flash loss 12-15mm
Upset allowance 6-12mm
Flash of light initial velocity 0-2mm/s
Flash of light termination speed 20-25mm/s
Upset speed 120-180mm/s
Current density 50-66A/mm
2
Upset current time 0-2s
Voltage 12V
Upsetting force 5-8 * 10
4N
Clamping force 10-15 * 10
4N.
3, according to claim 1 or the described this automobile of claim 2, motorcycle aluminium alloy wheel flash of light welding procedure, its feature also is should satisfy following condition before and after the clamping workpiece:
Workpiece both ends of the surface angle α is 1-4 ° before the clamping
Workpiece both ends of the surface parallel clearance β behind the clamping
10.2-1mm
Workpiece two sides misplacement space β behind the clamping
2Less than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113599 CN1120072C (en) | 1999-04-02 | 1999-04-02 | Flash butt welding technology for aluminium alloy wheel rim of automobile and motor cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113599 CN1120072C (en) | 1999-04-02 | 1999-04-02 | Flash butt welding technology for aluminium alloy wheel rim of automobile and motor cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1233548A true CN1233548A (en) | 1999-11-03 |
| CN1120072C CN1120072C (en) | 2003-09-03 |
Family
ID=5276773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113599 Expired - Fee Related CN1120072C (en) | 1999-04-02 | 1999-04-02 | Flash butt welding technology for aluminium alloy wheel rim of automobile and motor cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120072C (en) |
Cited By (16)
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|---|---|---|---|---|
| CN102107320A (en) * | 2010-12-30 | 2011-06-29 | 首钢总公司 | Pulsed switch-on preheating flash butt welding process for steel rims of heavy trucks |
| CN102513786A (en) * | 2011-12-03 | 2012-06-27 | 江苏欧玛机械有限公司 | Preparation method of high-performance round ring chain |
| CN102935550A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of iron-based superalloy thin-wall ring member |
| CN102935552A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of constructional steel thin-wall ring member |
| CN102935551A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of aluminum alloy thin-wall ring member |
| CN102935553A (en) * | 2012-11-23 | 2013-02-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of stainless steel thin-wall ring member |
| CN102941405A (en) * | 2012-11-23 | 2013-02-27 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of alpha-beta two-phase titanium alloy thin-wall ring piece |
| CN102962569A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding shaping method for Alpha-phase titanium alloy thin-walled ring |
| CN102962570A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of bearing steel thin-wall ring member |
| CN102962567A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding shaping method for nickel-based high-temperature alloy thin-wall ring |
| CN102962568A (en) * | 2012-11-23 | 2013-03-13 | 贵州安大航空锻造有限责任公司 | Flash welding shaping method for Beta-phase titanium alloy thin-walled ring |
| CN102974930A (en) * | 2012-11-23 | 2013-03-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method of cobalt-based high-temperature alloy thin-walled ring member |
| CN103080579A (en) * | 2010-07-02 | 2013-05-01 | Skf公司 | A bearing ring and a method for its manufacturing |
| CN104625376A (en) * | 2014-12-15 | 2015-05-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method for aluminum alloy large-cross-section ring piece |
| CN104625375A (en) * | 2014-12-15 | 2015-05-20 | 贵州安大航空锻造有限责任公司 | Flash welding forming method for nickel-base superalloy large-cross-section ring piece |
| CN104625371A (en) * | 2014-12-15 | 2015-05-20 | 贵州安大航空锻造有限责任公司 | Method for forming beta-phase titanium alloy large-cross-section ring piece through flash welding |
-
1999
- 1999-04-02 CN CN 99113599 patent/CN1120072C/en not_active Expired - Fee Related
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| CN103080579A (en) * | 2010-07-02 | 2013-05-01 | Skf公司 | A bearing ring and a method for its manufacturing |
| CN102107320A (en) * | 2010-12-30 | 2011-06-29 | 首钢总公司 | Pulsed switch-on preheating flash butt welding process for steel rims of heavy trucks |
| CN102513786A (en) * | 2011-12-03 | 2012-06-27 | 江苏欧玛机械有限公司 | Preparation method of high-performance round ring chain |
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