CN207757143U - Welding auxiliary mould for x-weld bottoming welding - Google Patents
Welding auxiliary mould for x-weld bottoming welding Download PDFInfo
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- CN207757143U CN207757143U CN201721824620.2U CN201721824620U CN207757143U CN 207757143 U CN207757143 U CN 207757143U CN 201721824620 U CN201721824620 U CN 201721824620U CN 207757143 U CN207757143 U CN 207757143U
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Abstract
Welding auxiliary mould described in the utility model for x-weld bottoming welding selectes composition backing of the metal cylinder as backing welding, by welding auxiliary mould rigidity positioning compression composition backing according to x-weld groove depth.Process mainly includes following steps：According to x-weld groove depth, metal cylinder is selected as composition backing；Metal cylinder as composition backing carries out location and installation；The positioning section that x-weld is done using composition backing is welded；The bottoming of x-weld is welded；The back side machinery back chipping of backing run；Bottoming welding after backing run back chipping.
Description
Technical field
The utility model is related to a kind of welding auxiliary moulds particular for x-weld bottoming welding, are mainly adapted to rail
The welding procedure of road carbody manufacture.
Background technology
With the fast development of rail vehicle manufacturing technology, adopted more and more in the car body manufacturing process of bullet train
The designing technique being combined with overall performance with lightweight.Normally, sleeper beam is the knob of Traction Drive between train and bogie
Band subjects stretching and pressure alternation load, and as one of important critical component, special structure and bearing capacity are to weld seam
Quality and car body have higher class requirement safely.Bottoming is welded in the welding process of sleeper beam x-weld, is played very crucial
Effect, to the capability and performance important of whole weld seam, and influence, the temporary weld backing plate itself of extraneous assembled condition
Material, temporary weld backing plate positioning assembly after with the tightening degree in weld groove face and the radiating condition etc. of temporary weld backing plate
Significant impact all is generated to the weldquality of backing welding, makes that backing weld seam is easily cracked, stomata, the defects of lack of fusion.
Previous use attaches ceramic wafer or stainless steel plate as composition backing, and the backing run back side is found after back chipping is handled
Welding bead regional area still has the defects of crackle, stomata, lack of fusion, and the remaining throat depth after back chipping closely reaches
Allow the technological parameter limit welded again, not only made weldquality in this way it is difficult to ensure that, but also increase the difficulty reprocessed of welding and
Manufacturing cost reduces production efficiency；On the other hand, the fault location on weld seam can have larger stress concentration, it will make weldering
The local strength of seam reduces by 4~6 times, and the factor of stress concentration gently increases with the increase of flaw height and width, as a result gesture
It must influence total performance and fatigue strength.
In view of this, special propose following improvement project.
Utility model content
Welding auxiliary mould described in the utility model for x-weld bottoming welding is that solving the prior art exists
The problem of and composition backing of the metal cylinder as backing welding is selected according to x-weld groove depth, pass through welding backman
The rigid positioning compression composition backing of dress.
It is the design mesh of the utility model, in order to be effectively reduced the defect of x-weld groove bottoming welding, to most
Ensure to limits the weldquality of backing run.
Another purpose of design is, provides good necessary condition for the back chipping processing of backing welding, ensures the backing run back of the body
Face can disposably remove defect after back chipping is handled.
To realize that above-mentioned purpose of design, the welding auxiliary mould for x-weld bottoming welding are beaten to meet
The composition backing size of back welding matches the requirement of consistency with weld groove size, mainly includes composition backing positioning compression
Pivoted arm, composition backing positioning compression screw rod, metal cylinder, the vertical end set of composition backing positioning compression screw rod are useful for pressing
The square tube of tight metal cylinder.
Metal cylinder should be it is elongated, the to-be-welded pieces locating clip with x-weld groove is next, by weld it is auxiliary
Assistant engineer's dress is rigidly positioned compression metal cylinder so that the root forming rule of backing weld seam.It can guarantee backing welding heat
The uniformity of conduction, the concentration of local that weld seam can be avoided to radiate.
To make the positioning device of welding auxiliary mould and the positioning tool mechanism of to-be-welded pieces be linked together, to improve positioning
Composition backing positioning compression pivoted arm can be fixed in the stiffener plate of positioning tool by the flexibility of operation, fixed in composition backing
It is provided with positioning pin on the compression pivoted arm of position.
In conclusion the utility model has compared to advantage possessed by the prior art with advantageous effect：
1, innovatively it is using stainless steel round bar as the advantage of backing welding composition backing, stainless steel round bar is in welded gasket
Under the action of plate positioning device pressing force, pole is in close contact with x-weld groove face, ensure that x-weld backing run is carried on the back
The molding elongated uniformity consistency in face reduces the influence factor that outer bound pair generates weld defect；
2, in the bottoming welding process of automatic welding, under conditions of heat input is certain, elongated stainless steel round bar ensures
The uniformity consistency of backing welding heat conduction, avoids the concentration of local of weld seam heat dissipation, substantially reduces weld defect appearance
Probability, provide good necessary condition indirectly for the processing of the back chipping of backing welding, ensure the backing run back side through back chipping at
Defect can be disposably removed after reason, to ensure the weldquality of backing run, reduced the difficulty that welding is reprocessed, improved production
Efficiency；
3, composition backing positioning device is fixed in the stiffener plate of sleeper beam positioning tool, makes the positioning of welding auxiliary mould
Device and sleeper beam positioning tool mechanism use as a whole, which operates flexibly in production application, real
It is strong with property, it is abundant to sleeper beam positioning tool and necessary supplement.
Description of the drawings
Fig. 1 is the sleeper beam main body proximate matter schematic diagram of rail vehicle；
Fig. 2 is welding auxiliary mould and sleeper beam positioning tool structure connection diagram；
Fig. 3 is the portions the A enlarged diagram in Fig. 2；
Fig. 4 is bottoming welding sequential schematic shown in the amplification of the portions B in Fig. 1.
Wherein, sleeper beam compresses pivoted arm 1 (having 8), and sleeper beam locating support 2 (has 8), sleeper beam positioning datum platform 3, sleeper beam
Positioning tool longeron 4 (has 2), and sleeper beam tooling stiffener plate 5 (has 16), and sleeper beam positioning tool crossbeam 6 (has 2), welding
Backing plate positioning compression pivoted arm 7 (has 4), and positioning pin 8 (has 4), and composition backing positioning compression screw rod 9 (has 4), square tube 10,
The stainless steel round bar 11 of Ф 8mm, sleeper beam 12.
Specific implementation mode
Embodiment 1, is below in conjunction with the accompanying drawings described in further detail the utility model.
The process for x-weld bottoming welding mainly includes the following steps that：
According to x-weld groove depth, selectes stainless steel round bar 11 and be used as composition backing；
Location and installation is carried out to the stainless steel round bar 11 as composition backing；
The positioning section that x-weld is done using composition backing is welded；
The bottoming of x-weld is welded；
The back side machinery back chipping of backing run；
Bottoming welding after backing run back chipping.
Specifically, the diameter that stainless steel round bar 11 is selected according to the groove depth of x-weld is higher than weld seam after so that it is positioned
1-2 millimeters of base material surface.
After stainless steel round bar 11 is as the location and installation of composition backing, it is less than 1 millimeter with the unfitness of butt joint of x-weld.
After stainless steel round bar 11 is as the location and installation of composition backing, the positioning section weldering for x-weld bottoming welding
Length is 30-50 millimeters, and at least 20 millimeters of profiled ends are left in positioning section weldering, and section welds spacing 300-450 millis.
After the back side machinery back chipping of backing run, groove depth meets 9.5-10 millimeters.
Using auxiliary mould, it is applied to the uniform pressing force of stainless steel round bar 11 on vertical, makes stainless steel round bar 11 and X
Type weld groove face is in close contact.
As shown in Figure 1 and Figure 4, according to 12 agent structure of sleeper beam and the plate thickness of proximate matter, rational welding sequence is formulated, i.e., first
It completes backing run I to weld, tooling is handled the back bead back chipping of welding bead I after overturning sleeper beam 12, then completes backing run II
Welding, then complete the capping filling of welding bead III and welding bead IV；
The groove depth of x-weld according to figure 1,316 stainless steel round bar 11 for selecting Ф 8mm are used as welded gasket
Plate, 11 length 3m of stainless steel round bar, and need to carry out surface cleaning processing to it before location and installation；
The Surface of profile for cleaning 20-50mm near x-weld groove and weld groove, degreases, and be polishing to light
Until；
2 pieces of 3m long profiles of 12 agent structure of sleeper beam are hoisted on the positioning datum platform 3 of sleeper beam tooling, weld seam is adjusted
Gap 0-1mm, welding seam misalignment amount are less than 1mm, it are made to meet welding process requirement；
Pivoted arm 1 and sleeper beam locating support 2 are compressed by sleeper beam rigidly to position sleeper beam, and overturns sleeper beam positioning tool, are made
Sleeper beam reverse side is upward；
Welding auxiliary mould according to Fig.2, and sleeper beam positioning tool structure connection relation are docked in the X-type of two proximate matters
The stainless steel round bar 11 that Ф 8mm are placed at weld groove is used as composition backing, and the stainless steel round bar after positioning is made to be higher by weld seam mother
Technique aluminum alloy square tube 10 is placed in material surface 1-2mm, the top that backboard is welded in stainless steel round bar, it is ensured that aluminium square tube bottom surface
Central role is in stainless steel round bar；
According to Fig.3, the composition backing positioning compression pivoted arm 7 in sleeper beam tooling stiffener plate 5 is fixed in rotation, makes weldering
Connection pad plate positioning compression screw rod 9 acts on the upper surface of technique aluminum alloy square tube 10, and is inserted into positioning pin 8, then revolves successively
Turn to tighten 4 group welding backing plate positioning compression screw rods 9, ensures that stainless steel round bar is adjacent to x-weld groove face completely；
During being rigidly fixed to stainless steel round bar, to again ensure that weld groove gap 0-1mm meets weldering
The requirement of technique is connect, welding seam misalignment amount is less than 1mm；
The stainless steel round bar of Ф 8mm as composition backing positioning it is fixed after, overturning sleeper beam tooling to sleeper beam reverse side downward, it is right
Sleeper beam x-weld carries out positioning section weldering, and it is 30-50mm that positioning section, which welds length,；
X-weld bottoming welding to 12 main body proximate matter of sleeper beam, that is, complete the welding of welding bead I；
After the completion of welding bead I, overturning sleeper beam tooling to sleeper beam reverse side upward, it is loose successively after sleeper beam workpiece is cooled to room temperature
4 group welding backing plate positioning compression screw rods 9, extraction positioning pin 8, then rotating welding backing plate positioning compression pivoted arm 7 are opened to sleeper beam tooling
Upper positioning port in stiffener plate is inserted into positioning pin 8 and it is fixed, then takes out stainless steel round bar 11；
To the back side machinery back chipping of backing run I, the weld seam after back chipping is after PT detections are qualified, then carries out subsequent weldering
It connects；Stainless steel round bar is as composition backing, and after reusing 4-5 times, the heat effect of weld seam can cause pole to deform, and need at this time
Replace stainless steel round bar.The bottoming of the x-weld of sleeper beam main body proximate matter is welded, 100-120 DEG C of weld preheating temperature range, welding
Technological parameter is as shown in the table：
After the completion of welding bead I, after PT detections are qualified, then the welding of subsequent passes 2 is carried out；The welding of backing run II,
100-120 DEG C of weld preheating temperature range, welding condition is as shown in the table：
After the completion of welding bead II, VT, PT and RT are carried out to backing run and examined, continues to complete welding bead III and weldering after the assay was approved
The capping in road IV is filled.
As described above, the plan content given by conjunction with the accompanying drawings and embodiments, can derive similar technical solution.But
Every content without departing from technical solutions of the utility model, it is made by the above technical examples according to the technical essence of the present invention
Any simple modification, equivalent change and modification are still within the scope of the technical solutions of the present invention.
Claims (2)
1. a kind of welding auxiliary mould for x-weld bottoming welding, it is characterised in that：It include composition backing positioning compression
Pivoted arm, composition backing positioning compression screw rod, metal cylinder, the vertical end set of composition backing positioning compression screw rod are useful for pressing
The square tube of tight metal cylinder.
2. the welding auxiliary mould according to claim 1 for x-weld bottoming welding, which is characterized in that welded gasket
Plate positioning compression pivoted arm is fixed in the stiffener plate of positioning tool, and positioning is provided on composition backing positioning compression pivoted arm
Pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824620.2U CN207757143U (en) | 2017-12-22 | 2017-12-22 | Welding auxiliary mould for x-weld bottoming welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824620.2U CN207757143U (en) | 2017-12-22 | 2017-12-22 | Welding auxiliary mould for x-weld bottoming welding |
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| Publication Number | Publication Date |
|---|---|
| CN207757143U true CN207757143U (en) | 2018-08-24 |
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| CN201721824620.2U Active CN207757143U (en) | 2017-12-22 | 2017-12-22 | Welding auxiliary mould for x-weld bottoming welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971680A (en) * | 2017-12-22 | 2018-05-01 | 青岛四方庞巴迪铁路运输设备有限公司 | Process and its welding auxiliary mould for x-weld bottoming welding |
-
2017
- 2017-12-22 CN CN201721824620.2U patent/CN207757143U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971680A (en) * | 2017-12-22 | 2018-05-01 | 青岛四方庞巴迪铁路运输设备有限公司 | Process and its welding auxiliary mould for x-weld bottoming welding |
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Address after: No.86, Jinhong East Road, Chengyang District, Qingdao City, Shandong Province Patentee after: Qingdao Sifang Alstom railway transportation equipment Co.,Ltd. Address before: No.86, Jinhong East Road, Chengyang District, Qingdao City, Shandong Province 266111 Patentee before: BOMBARDIER SIFANG (QINGDAO) TRANSPORTATION Ltd. |