CN103170711A - Manual handle-swinging welding method of TIG welding - Google Patents
Manual handle-swinging welding method of TIG welding Download PDFInfo
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- CN103170711A CN103170711A CN2013100936939A CN201310093693A CN103170711A CN 103170711 A CN103170711 A CN 103170711A CN 2013100936939 A CN2013100936939 A CN 2013100936939A CN 201310093693 A CN201310093693 A CN 201310093693A CN 103170711 A CN103170711 A CN 103170711A
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Abstract
The invention provides a manual handle-swinging welding method of TIG welding. The method comprises the following steps: S110, inspecting equipment before welding; S120, enabling a ceramic nozzle of an argon arc welding gun to abut against a groove so as to use the nozzle as a supporting point; S130, enabling the argon arc welding gun to incline reversely along a welding bead and enabling the inclined angle to be about 130 degrees; S140, swinging the argon arc welding gun in a left and right mode so as to conduct welding in an arc mode; and S150, after a welding gap is welded, checking the appearance quality of the welding gap and coping surface defects, wherein the S110 comprises cleaning sundries in the groove and within the range of 10-20mm of both sides of the edge of the groove until metallic luster shows and the S140 comprises firstly conducting arc backing welding, and after the groove is fused together, quickening welding frequency so as to control the thickness of a welding bead interlayer and interlayer temperature; and then conducting cover face welding with larger swinging radian of the argon arc welding gun. The manual handle-swinging welding method of the TIG welding is capable of solving the problems that due to the phenomenon of overburning, holes shrink in the back portion of the welding bead, the welding bead sinks and collapses and the like.
Description
Technical field
The present invention relates to TIG(Tungsten Inert Gas, non-consumable gas shielded arc welding is called for short TIG) welding technology field, more specifically, relate to a kind of manual " crank weldering " method of TIG weldering.
Background technology
Non-consumable gas shielded arc welding (being called for short TIG) claims again argon tungsten-arc welding or gas tungsten arc welding; it is to use pure tungsten or activation tungsten electrode; with the electrogas process of inert gas-argon gas as protective gas; the tungsten bar electrode only plays electric action and does not melt, and produces electric arc after energising between tungsten electrode and workpiece.
The electric arc of non-consumable gas shielded arc welding and molten bath observability are good, easy to operate; There is no slag or slag seldom, need not the postwelding scarfing cinder; In welding process, must get well because weld seam is protected, therefore weld metal purity is high, performance good; During welding, heating is concentrated, so the weldment distortion is little; Arc stability is good, little electric current (＜electric arc also can smooth combustion 10A) time.TIG welding can be divided into again two kinds of manual welding and automatic weldings, uses comparatively extensive with GTAW.
In pipeline welding, manual argon arc is more common method, and common welding method thinks little of controlling temperature, causes the interlayer of welding bead too thick, and therefore overstand easily causes burn-off phenomenon.Burning is the difficulty of difficult breakthrough in welding; The defectives such as when burning caused downhand welding and overhead welding, the easy formation in welding bead back stayed, depression; Simultaneously, require higher to welder's operant level.After pipeline welding was completed, X ray detected qualification rate 80 to 95, and repair rate is high, and wlding and artificial input are also larger.Therefore, original welding method can not adapt to actual requirement, needs a kind of new TIG welding method.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide manual " crank weldering " method of a kind of TIG weldering, the welding bead back shrinkage hole that causes with the solution burn-off phenomenon, cave in and the problem such as stay.
Manual " crank weldering " method of TIG weldering provided by the invention comprises the steps:
S110: the inspection of equipment before weldering; Remove the foreign material in groove and each 10-20mm scope of both sides of edges thereof, until expose metallic luster;
S120: the ceramic tight-lipped groove that leans against of argon-arc welding gun is done the strong point;
S130: argon-arc welding gun tilts in the other direction along welding bead, and the angle of inclination is approximately 130 °;
S140: the left and right tiltedly swings argon-arc welding gun and draws arc welding, first carries out picture arc backing welding, after groove fuses, accelerates welding frequency to control welding bead interlayer thin and thick and interlayer temperature; Carry out again argon arc welding and rob the bigger cover welding of oscillator arc;
S150: after weld seam was soldered, the welder checked the weld appearance quality, the reconditioning blemish.
In addition, preferably scheme is, in step S140, the welding bead outward appearance presents trickle fish scale-shaped, silvery white, and width is consistent, and height is even, and reinforcement is 0.2-0.5mm.
In addition, preferably scheme is, and is stable with thin and thick and the interlayer of controlling described welding bead interlayer by accelerating welding frequency in step S140, avoids occurring burn-off phenomenon.
In addition, preferred scheme is that in step S140, during cover welding, fusion groove corner angle are 0.5-1mm.
Manual " crank weldering " method of TIG weldering provided by the invention can obtain following beneficial effect:
1) pipeline welding quality is high, and after welding procedure was completed, X ray detected qualification rate more than 98;
2) can reduce the anti-revisionist rate of pipeline welding finished product;
3) save wlding;
4) enhance productivity;
5) can control well welding quality.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the feature that the back will describe in detail and particularly point out in the claims.Following explanation and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects be only some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
By the content of reference below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other purpose of the present invention and result will more be understood and should be readily appreciated that.In the accompanying drawings:
Fig. 1 is manual " crank weldering " method flow diagram of TIG weldering according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of ceramic mouth on groove according to the argon-arc welding gun of the embodiment of the present invention;
Fig. 3 is the argon-arc welding gun angle of inclination schematic diagram according to the embodiment of the present invention;
Fig. 4 is the welding bead design sketch according to manual " crank weldering " method of TIG weldering of the embodiment of the present invention.
Label identical in institute's drawings attached is indicated similar or corresponding feature or function.
The specific embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Fig. 1 is manual " crank weldering " method flow diagram of TIG weldering according to the embodiment of the present invention, and as shown in Figure 1, manual " crank weldering " method of TIG weldering provided by the invention comprises the steps:
S110: the inspection of equipment before weldering; Remove the foreign material in groove and each 10-20mm scope of both sides of edges thereof, until expose metallic luster;
S120: the ceramic tight-lipped groove that leans against of argon-arc welding gun is done the strong point;
S130: argon-arc welding gun tilts in the other direction along welding bead, and the angle of inclination is approximately 130 °;
S140: the left and right tiltedly swings argon-arc welding gun and draws arc welding, first carries out picture arc backing welding, after groove fuses, accelerates welding frequency to control welding bead interlayer thin and thick and interlayer temperature; Carry out again argon arc welding and rob the bigger cover welding of oscillator arc;
S150: after weld seam was soldered, the welder checked the weld appearance quality, the reconditioning blemish.
In the step S110 of manual " crank weldering " method of above-mentioned TIG weldering, the inspection of equipment before weldering checks that the argon gas cylinder valve has or not to leak gas and malfunctioning whether wireway is unimpeded, and whether the instrument and meters such as current voltmeter, flowmeter are normal etc.; Connect the welding change-over switch, mix up welding current, down slope time gas lag time choose the length change-over switch, regulate the required numerical value of argon flow amount; Perform workmen's protection and on-the-spot labour protection; Tungsten bar is worn into required form, regulate tungsten electrode and stretch out nozzle length (3～6mm left and right); The electric power polarity of GTAW is straight polarity direct current; Remove the foreign material such as the interior greasy dirt of groove and each 10-20mm scope of both sides of edges thereof, iron rust, until expose metallic luster.
In the step S120 of manual " crank weldering " method of TIG weldering, the ceramic tight-lipped groove that leans against of argon-arc welding gun is done the strong point.Fig. 2 is the schematic diagram of ceramic mouth on groove according to the argon-arc welding gun of the embodiment of the present invention, and as shown in Figure 2, the crank weldering is to do the strong point on groove with ceramic tight-lipped the abutting against of argon-arc welding gun.
In the step S130 of manual " crank weldering " method of TIG weldering, argon-arc welding gun tilts in the other direction along welding bead, and the angle of inclination is approximately 130 °.Fig. 3 is the argon-arc welding gun angle of inclination schematic diagram according to the embodiment of the present invention, as shown in Figure 3, the argon-arc welding gun angle of inclination be approximately 130 ° of left and right.
In the step S140 of manual " crank weldering " method of TIG weldering, the left and right tiltedly swings argon-arc welding gun and draws arc-welding, first carries out picture arc backing welding, after groove fuses, accelerate welding frequency with control welding bead interlayer thin and thick and interlayer temperature, then carry out argon arc welding and rob the bigger cover welding of oscillator arc.
In step S140, draw arc welding and be divided into backing welding and cosmetic welding; Capping layer and prime coat are roughly the same, but the radian that swing is robbed in argon arc welding is slightly large, are advisable to fuse groove corner angle 0.5-1mm.
In welding process, if do not control interlayer temperature, will cause the interlayer of welding bead blocked up, overstand, thus cause burn-off phenomenon.Burning is the difficulty of difficult breakthrough in welding; The burning meeting causes downhand welding or when overhead welding, the defectives such as the welding bead back is easy to form and stays, depression.In the present embodiment, The faster the better for welding frequency, welding bead interlayer easy to control thin and thick, and layer thickness is got over Bao Yuehao, can better control interlayer temperature like this, to avoid occurring burn-off phenomenon.
In step S140, be preferably in indoor carrying out in the argon arc welding construction, if not at indoor construction, special draught exclusion device need to be arranged.
In step S140, if when the duct thickness of welding is 3-6mm, adopt two-layer welding; Interrupt when welding, again rise weldering should with the overlapping 6-8mm of former weld seam so that welding solder skip do not occur comprehensively.
In the present embodiment, the welding bead outward appearance presents trickle fish scale-shaped, silvery white, and width is consistent, and height is even, and reinforcement is 0.2-0.5mm.Fig. 4 is that as shown in Figure 4, welding bead presents trickle cataphracted silvery white, and width is consistent according to the welding bead design sketch of manual " crank weldering " method of TIG weldering of the embodiment of the present invention, and height evenly.This welding method provided by the invention can reach good welding effect, not only can enhance productivity, and equally also can improve welding quality.
In the step S150 of manual " crank weldering " method of TIG weldering, after weld seam is soldered, welding procedure personnel inspection weld appearance quality, the reconditioning blemish reduces repair rate as far as possible, makes up the welding procedure defective.
Can find out by above-mentioned embodiment, manual " crank weldering " method of TIG weldering of the present invention, traditional welding method is changed into the crank soldering method of effective control burning, defectives such as effectively controlling welding bead back shrinkage hole by controlling burning, cave in and stay; In welding procedure, the welding bead outward appearance presents trickle fish scale-shaped, silvery white, and width is consistent, and height is even, and reinforcement is 0.2-0.5mm, and welding bead presents silvery white, and welding finished product is by X-ray examination, and qualification rate reaches more than 98 percent.
Manual " crank weldering " method of TIG weldering that proposes according to the present invention has as above been described in the mode of example with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that manual " crank weldering " method of TIG weldering that proposes for the invention described above, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (4)
1. manual " crank weldering " method of TIG weldering, is characterized in that, comprises the steps:
S110: the inspection of equipment before weldering; Remove the foreign material in groove and each 10-20mm scope of both sides of edges thereof, until expose metallic luster;
S120: the ceramic tight-lipped groove that leans against of argon-arc welding gun is done the strong point;
S130: argon-arc welding gun tilts in the other direction along welding bead, and the angle of inclination is approximately 130 °;
S140: the left and right tiltedly swings argon-arc welding gun and draws arc welding, first carries out picture arc backing welding, after groove fuses, accelerates welding frequency to control welding bead interlayer thin and thick and interlayer temperature; Carry out again argon arc welding and rob the bigger cover welding of oscillator arc;
S150: after weld seam was soldered, the welder checked the weld appearance quality, the reconditioning blemish.
2. TIG as claimed in claim 1 welds manual " crank weldering " method, and wherein, in step S140, described welding bead outward appearance presents trickle fish scale-shaped, silvery white, and width is consistent, and height is even, and reinforcement is 0.2-0.5mm.
3. manual " crank weldering " method of TIG weldering as claimed in claim 1, wherein stable with thin and thick and the interlayer of controlling described welding bead interlayer by accelerating welding frequency in step S140, avoids occurring burn-off phenomenon.
4. TIG as claimed in claim 1 welds manual " crank weldering " method, and wherein, in step S140, during cover welding, fusion groove corner angle are 0.5-1mm.
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| CN201310093693.9A CN103170711B (en) | 2013-03-22 | 2013-03-22 | Manual " crank weldering " method of TIG weldering |
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| CN201310093693.9A CN103170711B (en) | 2013-03-22 | 2013-03-22 | Manual " crank weldering " method of TIG weldering |
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| CN103170711A true CN103170711A (en) | 2013-06-26 |
| CN103170711B CN103170711B (en) | 2015-08-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345222A (en) * | 2015-11-24 | 2016-02-24 | 唐山轨道客车有限责任公司 | Single-face-welding and double-face-forming welding method |
| CN110238554A (en) * | 2019-07-03 | 2019-09-17 | 石思思 | The welding gun head with miscellaneous function for steam turbine welding equipment |
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|---|---|---|---|---|
| JPS5561383A (en) * | 1978-10-27 | 1980-05-09 | Kobe Steel Ltd | Dc tig weaving welding method |
| JP2004009115A (en) * | 2002-06-10 | 2004-01-15 | Daihen Corp | Tig arc welding processes |
| CN102225486A (en) * | 2011-05-31 | 2011-10-26 | 孙洪伟 | Welding wire-free manual swing welding method |
| CN102528238A (en) * | 2012-01-18 | 2012-07-04 | 江苏中核利柏特股份有限公司 | Manual argon-arc welding process of tungsten electrode |
| CN102941397A (en) * | 2012-10-09 | 2013-02-27 | 中冶南方(武汉)威仕工业炉有限公司 | Argon tungsten arc welding method for nickel-based alloy |
-
2013
- 2013-03-22 CN CN201310093693.9A patent/CN103170711B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5561383A (en) * | 1978-10-27 | 1980-05-09 | Kobe Steel Ltd | Dc tig weaving welding method |
| JP2004009115A (en) * | 2002-06-10 | 2004-01-15 | Daihen Corp | Tig arc welding processes |
| CN102225486A (en) * | 2011-05-31 | 2011-10-26 | 孙洪伟 | Welding wire-free manual swing welding method |
| CN102528238A (en) * | 2012-01-18 | 2012-07-04 | 江苏中核利柏特股份有限公司 | Manual argon-arc welding process of tungsten electrode |
| CN102941397A (en) * | 2012-10-09 | 2013-02-27 | 中冶南方(武汉)威仕工业炉有限公司 | Argon tungsten arc welding method for nickel-based alloy |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345222A (en) * | 2015-11-24 | 2016-02-24 | 唐山轨道客车有限责任公司 | Single-face-welding and double-face-forming welding method |
| CN105345222B (en) * | 2015-11-24 | 2017-08-25 | 中车唐山机车车辆有限公司 | The welding method of single face welding and double face shaping |
| CN110238554A (en) * | 2019-07-03 | 2019-09-17 | 石思思 | The welding gun head with miscellaneous function for steam turbine welding equipment |
| CN110238554B (en) * | 2019-07-03 | 2021-08-20 | 威海鑫瑞焊接设备有限公司 | Welding gun head with auxiliary function for steam turbine welding equipment |
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| CN103170711B (en) | 2015-08-19 |
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