CN107999931A - The welding procedure of rear axle housing assembly axle tube and bump joint - Google Patents

The welding procedure of rear axle housing assembly axle tube and bump joint Download PDF

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Publication number
CN107999931A
CN107999931A CN201711339097.9A CN201711339097A CN107999931A CN 107999931 A CN107999931 A CN 107999931A CN 201711339097 A CN201711339097 A CN 201711339097A CN 107999931 A CN107999931 A CN 107999931A
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CN
China
Prior art keywords
housing assembly
welding
axle
axle housing
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711339097.9A
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Chinese (zh)
Inventor
石南辉
贾广攀
黎泉
宾凯
刘浩宇
刘树胜
赵成龙
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Qinzhou University
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Qinzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qinzhou University filed Critical Qinzhou University
Priority to CN201711339097.9A priority Critical patent/CN107999931A/en
Publication of CN107999931A publication Critical patent/CN107999931A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004Filling of continuous seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/235Preliminary treatment

Abstract

The invention discloses the welding procedure of a kind of rear axle housing assembly axle tube and bump joint, it is by being improved to the banjo fixing butt jointing with V-butt by traditional corner joint to the rear axle housing assembly axle tube after grafting and the docking structure of hubbed flange, so that the weld seam in welding more can be penetrated easily, the break resistance for welding obtained workpiece improves a lot with durable performance, and the verification through the applicant:Obtained workpiece is welded to exist《The load of 3 times of car weights carries out Stromeyer test》Criterion of acceptability requirement can be reached, be very useful to promote;The present invention is before being welded at the same time, corresponding the pre-heat treatment is carried out to rear axle housing assembly axle tube and hubbed flange respectively, and complete also to carry out postheating processing immediately to workpiece in welding, further increase welding quality, with welding procedure is easy to operate, welding quality is high, of low cost, it is highly suitable for the field of welding processing of rear axle housing assy of automobile.

Description

The welding procedure of rear axle housing assembly axle tube and bump joint
Technical field
The present invention relates to a kind of auto parts machinery processing technology, and in particular to a kind of rear axle housing assembly axle tube connects with flange The welding procedure of head.
Background technology
It is well known that engine, gearbox and vehicle bridge are three big power core assemblies of automobile, though and vehicle bridge is not in three As engine is often referred to as gearbox by people, but the effect of tie is played during automotive power transmission, it is right The dynamic property and stability of the traveling of vehicle play the role of very important.Vehicle bridge is also referred to as axle, bridge and rear axle before being generally divided into. And rear axle is one of key components and parts of automobile, the effect of load-bearing and power transmission is primarily served, also bearing by dynamic loading and quiet Larger moment of flexure and moment of torsion caused by load.Therefore rear axle should have enough intensity, rigidity and toughness, its welding quality Quality is related to the safety issue of automobile.
Rear axle housing assembly is mainly attached by flange, casing, spring block, bridge plate shell, bushing, stiffening ring, rear cover and oil tube bracket Part etc. forms.As shown in Figure 1, the existing processing for rear axle housing assembly, usually by rear axle housing assembly axle tube and flange Docked and welded afterwards together, rear axle housing assembly axle tube is specifically inserted into the band neck side of hubbed flange, then to grafting Hubbed flange and the junction (corner joint) of axle tube afterwards is welded.It is not difficult to find out from figure, axle tube and method Blue connector is the angle joint of grafting form, and non-bevel, since the tube wall of axle tube is thicker, using carbon dioxide The joint flange side of weldering is protected lack of penetration situation easily occur since fusion penetration is excessively shallow.So as to which the anti-of workpiece welded breaks Fragility energy and durable poor-performing, especially to workpiece carry out 3 times of car weights load Stromeyer test when, cycle-index is more Criterion of acceptability is not up in the case of number, it will directly influence the safety traffic of automobile.
The content of the invention
For above-mentioned deficiency, the technical problems to be solved by the invention are to provide a kind of rear axle housing assembly easy to operate The welding procedure of axle tube and bump joint, it, which welds obtained accessory, has good Resisting fractre and durable performance.
To achieve the above object, the present invention is achieved through the following technical solutions:
The welding procedure of rear axle housing assembly axle tube and bump joint, comprises the following steps:
1) pattern handling of hubbed flange:In the both ends end with neck side of hubbed flange, liner plate, the lining are set respectively One end of plate be fixed on on neck side and be integrally formed with neck side and liner plate and between neck side formed 900~1800 peace Fill groove;
2) pattern handling of rear axle housing assembly axle tube:The end of wherein one end of the rear axle housing assembly axle tube It is provided with face of slope and makes band neck side and rear axle housing assembly semiaxis after the rear axle housing assembly axle tube insertion installation groove Spacing has a V-butt between casing;
3) weld:After V-butt is welded using the welding method of carbon dioxide gas arc welding, making after docking Being seamlessly connected with neck side after the welding of V-butt on axle case assy axle tube and hubbed flange is integrated.
In such scheme, in order to improve hubbed flange and rear axle housing assembly axle tube docking comprehensive mechanical performance, with Improve the quality of welding, can be before carry out step 3), respectively to hubbed flange with neck side and rear axle housing assembly axle tube Steel side carries out the pre-heat treatment.
In such scheme, further, the preheating temperature with neck side of the hubbed flange can 190 DEG C~300 DEG C it Between, the preheating temperature of the steel side of the rear axle housing assembly axle tube can be between 90 DEG C~150 DEG C.
In such scheme, further, can after step 3) is completed, to the obtained workpiece of welding immediately using heat-preservation cotton into When row insulation 2 is small.
In such scheme, the weldingvoltage of step 3) can be 29V~31V, and welding current can be 230A~290A, use CO2The purity of protective gas is no more than 0.01% for more than 99.7% and its water content, phosphorus content.
In such scheme, the band neck side of the hubbed flange concretely carbon quenched and tempered steel in 40Cr, the thickness of taper neck-finish For 8mm;The rear axle housing assembly axle tube concretely SAPH440 automobile structural steels, the thickness of tube wall is 6mm.
Beneficial effects of the present invention are:
1st, the present invention by the rear axle housing assembly axle tube after grafting and the docking structure of hubbed flange by traditional Corner joint is improved to the connector with V-butt so that the weld seam in welding more can be penetrated easily, the workpiece welded Break resistance improves a lot with durable performance, and the verification through the applicant:Obtained workpiece is welded to exist《3 times of cars The load of weight carries out Stromeyer test》Criterion of acceptability requirement (note can be reached:Criterion of acceptability is the load by 3 times of car weights Stromeyer test is carried out, cycle-index is averagely greater than 800,000 times).
2nd, the present invention respectively preheats rear axle housing assembly axle tube and hubbed flange before being welded accordingly Processing, and postheating processing is also carried out immediately to workpiece in welding completion, welding quality is further increased, there is welding Technological operation is simple, welding quality is high, of low cost, is highly suitable for the field of welding processing of rear axle housing assy of automobile.
Brief description of the drawings
Fig. 1 be existing rear axle half-axle sleeve be inserted into hubbed flange after docking structure diagrammatic cross-section.
Fig. 2 is the section after wherein one end of the rear axle half-axle sleeve and hubbed flange that are designed with V-butt is connected to each other Structure diagram.
Figure label is:1st, rear axle housing assembly axle tube, 2, hubbed flange, 3, corner joint, 4, V-butt, 5, lining Plate, 6, band neck side, a is the inclination angle of face of slope.
Embodiment
With reference to specific embodiments and the drawings the present invention will be further explained explanation, but the invention is not limited in Following embodiments.
Embodiment 1
The welding procedure of rear axle housing assembly axle tube and bump joint, comprises the following steps:
1) pattern handling of hubbed flange:In the both ends end with neck side 6 of hubbed flange 2, liner plate 5 is set respectively, it is described One end of liner plate 5 be fixed on band neck side 6 and be integrally formed with band neck side 6 and liner plate 5 and with form 900 between neck side 6~ 1800 installation groove;
2) pattern handling of rear axle housing assembly axle tube:The end of wherein one end of the rear axle housing assembly axle tube 1 Portion is provided with face of slope, and in the present embodiment, the inclination angle of the face of slope is specifically between 00~900.Rear axle housing is total Be inserted into axle tube 1 after the installation groove has a V-butt with spacing between neck side 6 and rear axle housing assembly axle tube 1 4, as shown in Figure 2.
3) weld preheating is handled:Respectively to the steel side with neck side 6 and rear axle housing assembly axle tube 1 of hubbed flange 2 into Row the pre-heat treatment, wherein the preheating temperature with neck side 6 of the hubbed flange 2 is 190 DEG C, the rear axle housing assembly half-axile sleeve The preheating temperature of the steel side of pipe 1 is 150 DEG C.
4) weld:After being welded to V-butt 4 using the welding method of carbon dioxide gas arc welding, make docking Being seamlessly connected with neck side 6 after the welding of V-butt 4 on rear axle housing assembly axle tube 1 and hubbed flange 2 is integrated.This In embodiment, each welding parameter for specifically using for:Weldingvoltage is 29V~31V;Welding current is 230A~290A;Adopted It is φ 1.2 by the use of the welding wire that the trade mark is JM-56 as wlding and welding wire specification, it is 15mm that welding wire, which does extension elongation,;The CO of use2Protect The purity for protecting gas is no more than 0.01% for more than 99.7% and its water content, phosphorus content, and gas flow is 15~20L/min. And welding process be from the bottom of V-butt 4 to top by welding procedure in layer shunting welding complete, do not allow together Complete.
5) after step 4) is completed, to the obtained workpiece of welding immediately using heat-preservation cotton keep the temperature 2 it is small when.
The band neck side 6 of the hubbed flange 2 of above-mentioned use is specially carbon quenched and tempered steel in 40Cr, and the thickness of taper neck-finish is 8mm; The rear axle housing assembly axle tube 1 is SAPH440 automobile structural steels, and the thickness of tube wall is 6mm.Certainly, hubbed flange 2 is with after Axle case assy axle tube 1 select which kind of material be according to the performance of production auto parts machinery determined, these are only it is current after The general material of axle case assy, material that the present invention is not limited thereto.
Embodiment 2
The present embodiment and embodiment 1 except that:Weld preheating processing in step 3), the hubbed flange 2 Preheating temperature with neck side 6 is 250 DEG C, and the preheating temperature of the steel side of the rear axle housing assembly axle tube 1 is 100 DEG C.
Embodiment 3
The present embodiment and embodiment 1 except that:Weld preheating processing in step 3), the hubbed flange 2 Preheating temperature with neck side 6 is 270 DEG C, and the preheating temperature of the steel side of the rear axle housing assembly axle tube 1 is 105 DEG C.
Embodiment 4
The present embodiment and embodiment 1 except that:Weld preheating processing in step 3), the hubbed flange 2 Preheating temperature with neck side 6 is 300 DEG C, and the preheating temperature of the steel side of the rear axle housing assembly axle tube 1 is 90 DEG C.
Embodiment 5
The present embodiment and embodiment 1 except that:Weld preheating processing in step 3), the hubbed flange 2 Preheating temperature with neck side 6 is 235 DEG C, and the preheating temperature of the steel side of the rear axle housing assembly axle tube 1 is 120 DEG C.
Experimental example 1
Select the hubbed flange 2 and rear axle housing assembly axle tube 1 of specification and material same as Example 1, i.e. rear axle housing The material of assembly axle tube 1 is SAPH440 automobile structural steels, pipe thickness 6mm;The material of hubbed flange 2 is in 40Cr Carbon quenched and tempered steel, the thickness of taper neck-finish is 8mm.And joint form such as Fig. 1 of rear axle housing assembly axle tube 1 and hubbed flange 2 It is shown, it is corner joint 3.
The same welding method for using carbon dioxide gas arc welding;Wlding be the trade mark be JM-56 welding wire, specification φ 1.2;CO as protective gas2Gas purity is more than 99.7%, its water content, phosphorus content are no more than 0.01%.
Welded under following welding parameter, and the workpiece that welding is obtained is denoted as test specimen 1:
Weldingvoltage:28~30V.
Welding current:260~310A.
Welding wire does extension elongation:15mm.
Gas flow:15~20L/min.
Preheating temperature:Do not preheated before weldering.
The load that 1 postwelding of test specimen has carried out 3 times of car weights carries out Stromeyer test, and cycle-index is not up to 100,000 times, welds Fracture (note occurs for seam:Criterion of acceptability be gone the load of 3 times of car weights when carrying out Stromeyer test cycle-index be greater than 80 Ten thousand times).
Experimental example 2
Select the hubbed flange 2 and rear axle housing assembly axle tube 1 with 1 same size of experimental example and material, and rear axle housing The joint form of assembly axle tube 1 and hubbed flange 2 is as shown in Figure 1, be corner joint 3.
The same welding method for using carbon dioxide gas arc welding;Wlding be the trade mark be JM-56 welding wire, specification φ 1.2;CO as protective gas2Gas purity is more than 99.7%, its water content, phosphorus content are no more than 0.01%.
Welded under following welding parameter, and the workpiece that welding is obtained is denoted as test specimen 2:
Weldingvoltage:28~30V.
Welding current:260~310A.
Welding wire does extension elongation:15mm.
Gas flow:15~20L/min.
Preheating temperature:Hubbed flange 240Cr steel side preheats 250 DEG C before weldering,.
The load that 2 postwelding of test specimen has equally carried out 3 times of car weights carries out Stromeyer test, and cycle-index is reaching 500,000 times When weld seam be broken.
Experimental example 3
The workpiece that welding procedure according to above-described embodiment 1~5 is welded is generally denoted as test specimen 3.Increase before welding The pre-heat treatment step, increase isothermal holding, while the connector of rear axle housing assembly axle tube 1 and hubbed flange 2 after welding Form is as shown in Fig. 2, banjo fixing butt jointing for the V-butt 4 with liner plate 5.Specific welding condition and for example above-mentioned implementation of step Shown in example 1~5.
After the completion of test specimen 3 welds, the load for equally having carried out 3 times of car weights carries out Stromeyer test, each embodiment Result of the test is as shown in table 1 below:
Table 1
Be not difficult to draw from upper table, the workpiece welded using this welding procedure, i.e., test specimen 33 times of car weights load into Cycle-index during row Stromeyer test is all higher than 800,000 times, meets the qualification standard requirement.The work that then explanation welding obtains The break resistance of part improves a lot with durable performance, ensure that the security of running car.And reality in contrast The result of the test of example 1 and experimental example 2 is tested well below 800,000 times, does not meet criterion of acceptability completely.Therefore, the improvement of this technique Unexpected, prominent beneficial effect has been obtained, has highly been promoted the use of.
It these are only explanation embodiments of the present invention, be not intended to limit the invention, for those skilled in the art For, within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in this hair Within bright protection domain.

Claims (6)

1. the welding procedure of rear axle housing assembly axle tube and bump joint, it is characterised in that comprise the following steps:
1) pattern handling of hubbed flange:In the both ends end of the band neck side (6) of hubbed flange (2), liner plate (5), institute are set respectively State liner plate (5) one end be fixed on band neck side (6) and be integrally formed with band neck side (6) and liner plate (5) with neck side (6) it Between formed 900~1800 installation groove;
2) pattern handling of rear axle housing assembly axle tube:The end of wherein one end of the rear axle housing assembly axle tube (1) Be provided with face of slope and make rear axle housing assembly axle tube (1) insertion it is described installation groove after band neck side (6) and rear axle housing it is total There is a V-butt (4) into spacing between axle tube (1);
3) weld:After V-butt (4) is welded using the welding method of carbon dioxide gas arc welding, making after docking Band neck side (6) on axle case assy axle tube (1) and hubbed flange (2) is seamlessly connected after the welding of V-butt (4) as one Body.
2. the welding procedure of rear axle housing assembly axle tube according to claim 1 and bump joint, it is characterised in that: Before carrying out step 3), the band neck side (6) to hubbed flange (2) and the steel side of rear axle housing assembly axle tube (1) carry out pre- respectively Heat treatment.
3. the welding procedure of rear axle housing assembly axle tube according to claim 2 and bump joint, it is characterised in that:Institute The preheating temperature of the band neck side (6) of hubbed flange (2) is stated between 190 DEG C~300 DEG C, the rear axle housing assembly axle tube (1) preheating temperature of steel side is between 90 DEG C~150 DEG C.
4. the welding procedure of rear axle housing assembly axle tube according to claim 1 and bump joint, it is characterised in that: After completing step 3), to the obtained workpiece of welding immediately using heat-preservation cotton keep the temperature 2 it is small when.
5. the welding procedure of rear axle housing assembly axle tube according to claim 1 and bump joint, it is characterised in that:Step Rapid weldingvoltage 3) is 29V~31V, and welding current is 230A~290A, the CO of use2The purity of protective gas is 99.7% Above and its water content, phosphorus content are no more than 0.01%.
6. the welding procedure of rear axle housing assembly axle tube according to claim 1 and bump joint, it is characterised in that:Institute The band neck side (6) for stating hubbed flange (2) is carbon quenched and tempered steel in 40Cr, and the thickness of taper neck-finish is 8mm;The rear axle housing assembly half Pipe spreader (1) is SAPH440 automobile structural steels, and the thickness of tube wall is 6mm.
CN201711339097.9A 2017-12-14 2017-12-14 The welding procedure of rear axle housing assembly axle tube and bump joint Pending CN107999931A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109202230A (en) * 2018-11-12 2019-01-15 美钻深海能源科技研发(上海)有限公司 A kind of welding technique of welded flange and petroleum pipeline

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CN103182633A (en) * 2013-03-08 2013-07-03 云南维克达汽车零部件有限公司 Split-type automobile rear-axle housing assembly welding method

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Publication number Priority date Publication date Assignee Title
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CN100999036A (en) * 2006-12-31 2007-07-18 南京汽车集团有限公司 Welding technology of bridge shell and spindle nose welding
JP2010100110A (en) * 2008-10-21 2010-05-06 Press Kogyo Co Ltd Axle case structure
CN101664846A (en) * 2009-09-09 2010-03-10 中国石油天然气集团公司 Method for preparing test real object for G3 alloy oil well pipe by welding
CN201951178U (en) * 2011-01-28 2011-08-31 长城汽车股份有限公司 Rear-axle-housing assembly in drive axle of vehicle
CN103182633A (en) * 2013-03-08 2013-07-03 云南维克达汽车零部件有限公司 Split-type automobile rear-axle housing assembly welding method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109202230A (en) * 2018-11-12 2019-01-15 美钻深海能源科技研发(上海)有限公司 A kind of welding technique of welded flange and petroleum pipeline

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Application publication date: 20180508