CN208961197U - Prevent the welder of steam head plate welding deformation - Google Patents
Prevent the welder of steam head plate welding deformation Download PDFInfo
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- CN208961197U CN208961197U CN201821490292.1U CN201821490292U CN208961197U CN 208961197 U CN208961197 U CN 208961197U CN 201821490292 U CN201821490292 U CN 201821490292U CN 208961197 U CN208961197 U CN 208961197U
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- steam head
- head plate
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- arcuate die
- welding deformation
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Abstract
The utility model discloses the welders for preventing steam head plate welding deformation, belong to welding technology field, the welder includes several shrimps bow code, support rod, steam head plate, steam head gusset, arcuate die and several pieces of mould pad blocks, the arcuate die is set as curved plate-like structure, the arcuate die convex surface is set up, support rod is arranged in arcuate die bottom, several pieces of mould pad blocks are uniformly and fixedly arranged at arcuate die upper surface, steam head plate is fitted in arcuate die upper surface, bend code by several shrimps to clamp steam head plate and arcuate die, the steam head gusset is welded in steam head plate.Deflection caused by according to welding is crossed, then deflection is preset in advance, so that just preset deflection is cancelled out each other after welding deformation, to achieve the effect that prevent welding deformation, not only weld appearance is excellent, and component is also beautiful.
Description
Technical field
The utility model relates to welding technology fields, more particularly to prevent the welder of steam head plate welding deformation.
Background technique
In Uruguay's project equipment (~7 effect of the effect of evaporator 2, surface condenser), the processing of internals some vapor head plate
Manufacture is that emphasis is also one of difficult point.Its material is ASME SA240M 304, and main body plate is with a thickness of 16mm, gusset thickness
For 16mm.Although using CO2 stainless flux-cored wire in terms of welding to weld, and use low current, weld at a slow speed, welds angle
Weld bead height is the welding procedure of 5mm, but since welding capacity is larger, welding deformation not of uniform size still occurs.All steamings
Vapour head basic structure is all as shown in Figure 1.It is generally made of four components, 1K, 2K, 3K, 4K as shown in the figure.Each components
That is the welding of main board and gusset can all cause local welding deformation, if will be to the entirety of steam head without effectively controlling
Assembling adversely affects.Now introduce welding process measure, welding points for attention and the reversible deformation control of steam head plate.
In in welding metal and substrate, weld seam is formed with due to being locally heated for expansion and contraction in the welding process
Very big temperature step, volume when welding metal attempts normal contraction to room temperature when cooling.But fusing welding metal because
Substrate and suffer restraints, will be generated between weld metal and substrate stress concentration.Therefore weld seam near zone generates stress collection
In and stretch bending or it is thinning, these be more than weld metal yield stress concentration release is formed permanent deformation.
When welding temperature is close to room temperature, entire substrate suffers restraints and can not deform, and the dilation matrices of metal are just close to yield stress.Such as
Fruit constrains (fixture fixed signal or anti-convergent force) and cancels, and residual stress release substrate will migrate, and welding workpiece will generate
Deformation.Metal interior structures are called welding stress because welding non-uniform heating and the cooling internal stress generated, by welding stress
Caused by deformation be called welding deformation.
Welding residual stress and strain not only influence the precision and good appearance degree of welding structure size, but also also may be used
Welded bearing capacity can be reduced to influence its service performance and service life.Welding deformation is residual simultaneously with residual stress
It is stored in welding structure, welding residual deformation will cause the variation of Components Shape and size, and such as longitudinally, laterally shrinking makes component ruler
It is very little to shorten, if component can be made to scrap beyond the range that dimensional tolerance allows.
Utility model content
The purpose of this utility model is to provide the welders for preventing steam head plate welding deformation, solve existing steam head
The technical issues of plate is easily deformed when welding.
The welder of steam head plate welding deformation is prevented, the welder includes several shrimps bow code, support rod, steaming
Vapour head plate, steam head gusset, arcuate die and several pieces of mould pad blocks, the arcuate die are set as curved plate-like structure, institute
It states arcuate die convex surface to set up, support rod is arranged in arcuate die bottom, and several pieces of mould pad blocks are uniformly and fixedly arranged at
Arcuate die upper surface, steam head plate are fitted in arcuate die upper surface, bend code steam head plate and arc by several shrimps
Mold cramping, the steam head gusset are welded in steam head plate.
Further, the utility model further includes guide rail, and the number of the guide rail is two, and guide rail is separately positioned on arc
Mold bottom, and be arranged in parallel, the bottom of support rod is fixed on guide rail, and the both ends of the arcuate die, which are fixed with guide rail, to be connected
It connects.
Further, the steam head plate and steam head gusset welding position are set as welding groove, and welding groove includes
First groove and the second groove, the first groove are 30 °, and the second groove is 15 °, the steam head gusset and steam head plate weld
It is set as leg, the foot welding height is 5mm.
Further, the thickness of the steam head plate and steam head gusset is 16mm.
Further, the both sides of steam head plate are arranged in shrimp bow code, and the number of the shrimp bow code of both sides setting is identical, and shrimp is bent
It is set in qually spaced in steam head plate between code and shrimp bow code.
Further, the height of the support rod with arcuate die is set where bottom position radian height phase
Together.
The utility model uses above-mentioned technical proposal, and the utility model has following technical effect that
The utility model by according to weld caused by deflection, then in advance deflection is preset so that
Just preset deflection is cancelled out each other after welding deformation, to achieve the effect that prevent welding deformation, not only weld appearance
Excellent, component is also beautiful, guarantees the requisite quality of entire engineering stainless steel equipment, also ensures the safety and efficiently life of factory
It produces, takes the technical measures of the above control deformation in all evaporators steam head plate welding of the project, deformation controls
In regulating scope, good effect is achieved.
Detailed description of the invention
Fig. 1 is the steam head basic structure schematic diagram of the utility model.
Fig. 2 is that the steam head plate welding deformation apparatus structure that prevents of the utility model is one.
Fig. 3 is that the utility model prevents steam head plate welding deformation device mould structural schematic diagram.
Fig. 4 is that effect diagram is welded in the steam head plate of the utility model.
Fig. 5 is the backing plate sectional view for preventing steam head plate welding deformation device of the utility model.
Fig. 6 is the steam head plate welding deformation variation structure chart of the utility model.
Fig. 7 is the steam head mainboard of the utility model in gusset welding sequence schematic diagram.
Numbered in figure: 1- guide rail, 2- shrimp bow code, 3- support rod, 4- steam head plate, 5- steam head gusset, 6- arcuate die,
7- mould pad block, the first groove of 8-, the second groove of 9-, 10- leg.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, referring to the drawings and enumerate excellent
Embodiment is selected, the utility model is further described.However, it is necessary to illustrate, many details listed in specification
It is specific even without these just for the sake of making reader have a thorough explanation to the one or more aspects of the utility model
Details also may be implemented the utility model these aspect.
As illustrated in figs. 2-7, the welder of steam head plate welding deformation is prevented, the welder includes several shrimps bow
Code 2, support rod 3, steam head plate 4, steam head gusset 5, arcuate die 6 and several pieces of mould pad blocks 7.Arcuate die 6 is set as
Curved plate-like structure.6 convex surface of arcuate die is set up, and support rod 3 is arranged in 6 bottom of arcuate die, several pieces of mould pad blocks 7
It is uniformly and fixedly arranged at 6 upper surface of arcuate die, steam head plate 4 is fitted in 6 upper surface of arcuate die, bends code by several shrimps
2 steam head plates 4 and arcuate die 6 clamp.Steam head gusset 5 is welded in steam head plate 4.It further include guide rail 1, the guide rail
1 number is two, and guide rail 1 is separately positioned on 6 bottom of arcuate die, and is arranged in parallel, and the bottom of support rod 3 is fixed on guide rail
On 1, the both ends of the arcuate die 6 are fixedly connected with the steam head plate 4 with guide rail 1 and install with 5 welding position of steam head gusset
It is set to welding groove, welding groove includes the first groove 8 and the second groove 9, and the first groove 8 is 30 °, and the second groove 9 is 15 °,
The steam head gusset 5 is set as leg 10 with 4 weld of steam head plate, and 10 height of leg is 5mm.
Specific work process:
There must be stainless billet to be isolated between carbon steel welding mould；Shrimp is used between steel substrate and reversible deformation template
Bend code to clamp, sees Fig. 2.Total sequence of welding is both ends behind first centre, then welds the one piece of gusset in interval and connect other one piece of gusset.
As shown in fig. 7, i.e. a: the welding sequence of all two side welds of gusset be as shown in Figure 7 1. -2. -3. -4.,
And 4 fusion lengths are roughly equal.
B: preferential most intermediate that piece or two pieces of gussets.
C: 3-5-7 and 3-5 "-7 ", and two are successively preferentially next welded from centre to both sides by two welding personnels
Name welder requires that identical speed is kept to be subjected to.
D: the welding of 2-4-6 and 2-4 "-6 " gussets is completed with the welding sequence of c and welding method later.
The rest may be inferred.The welding method of other steam head plates is all made of said welding method use as far as possible and is symmetrically welded, closes
The method that reason arranges welding sequence, maximally reduces welding deformation, while also the link for aligning uses manpower and material resources sparingly, more
It ensure that the quality of product excellently.
Welding line interlayer temperature cannot be greater than 60 DEG C, that is, after being soldered first, and weld seam temperature should could start lower than 60 DEG C
The welding of second weld seam (time interval is about 10 minutes).
After the completion, it is cooled to room temperature rear to weld seam to disassemble steel plate, then using 700T hydraulic press to part
Welding deformation is smoothed.
Welding preparation, welding parameter is selected and welding inspection
1) welding preparation, removes oxide skin, slag and the superficial layer for influencing joint quality surface of groove face, and should incite somebody to action
Uneven place polishes flat；It must keep removing the various pollutions that may make weld metal carburetting；
2) within the scope of each 100mm in stainless steel weldment groove two sides, taking before welding prevents spatter object from staiing weldment
The measure on surface, such as brush protection oil, lime paste；
3) forbid the striking of base material surface and the test current except groove, and arc scratch base material should be prevented.
4) reversed polarity should be used when stainless flux-cored wire direct current welds；Protective gas is CO2, gas flow with 20~
25L/min is convenient；Weldment is advisable at a distance from tip with 15~20mm；
5) welding procedure of low_input_power is used, deposition rate is high, and speed of welding is high；
6) when welding, interlayer need to remove the splash of slag and two sides；Face of weld must not have crackle, macroscopic table
Face stomata, slag inclusion, overlap etc..Welding and assembling height answers rounding off in strict accordance with drawing requirement, surface weld and base material, and weld seam is answered whole
It together, is smoothly in uniform corrugated.
7) qualification of welding procedure before welding should be executed by SAME relevant criterion: in welding, it should the suitable welding of selection
Parameter, as shown in table 1；In the welding process, it is necessary to so that weldment is kept lower interlayer temperature, be usually no more than 60 DEG C.
1 welding parameter of table
Accurately selecting suitable mould is an important measures of welding anti-distortion technique, and the bigger than normal or less than normal of radian all will
Plate flatness after directly affecting welding.After fillet in normal shear is all soldered, as weld seam is constantly cooling and shrinks, angle
Deformation is gradually increased, and the angle [alpha] of 10~18mm plate will increase to 3 °~4 ° under normal circumstances.The welding of each gusset can draw
The certain deformation of the angle of substrate is played, and has several gussets according to each steam head plate of drawing requirement, is welded deformed
Angle will be very big.If taking no action to, not only increase correction welding residual deformation difficulty, while also resulting in the phase of assembled dimension
And appearance larger to deviation is unsightly.
The welding processing of steam head plate, welding deformation are unavoidable, as long as but take reasonable welding procedure and its
He controls the technical measures of deformation, still can effectively control, and not only weld appearance is excellent, and component is also beautiful, guarantees entire work
The requisite quality of journey stainless steel equipment also ensures the safety and efficiently production of factory.In all evaporators steam of the project
Head plate welding takes the technical measures of the above control deformation, and deformation control achieves good effect in regulating scope
Fruit.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, can also make several improvements and retouch, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. preventing the welder of steam head plate welding deformation, which is characterized in that the welder includes several shrimps bow code
(2), support rod (3), steam head plate (4), steam head gusset (5), arcuate die (6) and several pieces of mould pad blocks (7), the arc
Shape mold (6) is set as curved plate-like structure, and arcuate die (6) convex surface is set up, and support rod (3) is arranged in arc mould
Has (6) bottom, several pieces of mould pad blocks (7) are uniformly and fixedly arranged at arcuate die (6) upper surface, and steam head plate (4) is fitted in
Arcuate die (6) upper surface clamps steam head plate (4) and arcuate die (6) by several shrimps bow code (2), the steam
Head gusset (5) is welded on steam head plate (4).
2. the welder according to claim 1 for preventing steam head plate welding deformation, it is characterised in that: further include guide rail
(1), the number of the guide rail (1) is two, and guide rail (1) is separately positioned on arcuate die (6) bottom, and is arranged in parallel, support
The bottom of bar (3) is fixed on guide rail (1), and the both ends of the arcuate die (6) are fixedly connected with guide rail (1).
3. the welder according to claim 1 for preventing steam head plate welding deformation, it is characterised in that: the steam head
Plate (4) and steam head gusset (5) welding position are set as welding groove, and welding groove includes the first groove (8) and the second groove
(9), the first groove (8) is 30 °, and the second groove (9) is 15 °, and the steam head gusset (5) sets with steam head plate (4) weld
It is set to leg (10), the leg (10) is highly 5mm.
4. the welder according to claim 1 for preventing steam head plate welding deformation, it is characterised in that: the steam head
The thickness of plate (4) and steam head gusset (5) is 16mm.
5. the welder according to claim 1 for preventing steam head plate welding deformation, it is characterised in that: shrimp bends code (2)
Both sides in steam head plate (4) are set, and the number of shrimp bow code (2) of both sides setting is identical, and shrimp bow code (2) and shrimp bow code (2)
Between be set in qually spaced on steam head plate (4).
6. the welder according to claim 1 for preventing steam head plate welding deformation, it is characterised in that: the support rod
(3) height is identical in the radian height of bottom position where arcuate die (6) as setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490292.1U CN208961197U (en) | 2018-09-12 | 2018-09-12 | Prevent the welder of steam head plate welding deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490292.1U CN208961197U (en) | 2018-09-12 | 2018-09-12 | Prevent the welder of steam head plate welding deformation |
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| Publication Number | Publication Date |
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| CN208961197U true CN208961197U (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821490292.1U Active CN208961197U (en) | 2018-09-12 | 2018-09-12 | Prevent the welder of steam head plate welding deformation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128444A (en) * | 2018-09-12 | 2019-01-04 | 广西建工集团第安装有限公司 | Prevent the welding method and device of steam head plate welding deformation |
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2018
- 2018-09-12 CN CN201821490292.1U patent/CN208961197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128444A (en) * | 2018-09-12 | 2019-01-04 | 广西建工集团第安装有限公司 | Prevent the welding method and device of steam head plate welding deformation |
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