CN102500883A - Wire-filling and self-melting compound welding method - Google Patents
Wire-filling and self-melting compound welding method Download PDFInfo
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- CN102500883A CN102500883A CN201210000623XA CN201210000623A CN102500883A CN 102500883 A CN102500883 A CN 102500883A CN 201210000623X A CN201210000623X A CN 201210000623XA CN 201210000623 A CN201210000623 A CN 201210000623A CN 102500883 A CN102500883 A CN 102500883A
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Abstract
The invention provides a wire-filling and self-melting compound welding method. A device used by the wire-filling and self-melting compound welding method consists of a welding power source, a direct-current heater power source, a dynamic wire feeding mechanism and a welding gun integrating the functions of wire feeding, air supply and water cooling. An earth wire of the welding power source is connected with a working piece to be welded, and a disk-like welding wire is fed to a welding wire opening of the welding gun by passing through a wire feeding hose through the dynamic wire feeding machine. The stretching lengths of a tungsten electrode and a welding wire are adjusted so that a distance between the tungsten electrode and the welding wire is kept in the range of 2.0-3.0 mm. Meanwhile, the welding wire output by a conductive opening is ensured to pass through the center line of the tungsten electrode. According to the wire-filling and self-melting compound welding method disclosed by the invention, the technical characteristics of high efficiency and good quality of a TT (Tension-Transfer) welding method are realized; the fitting-up requirement to the working piece to be welded is greatly reduced; the difficult problems in production of bad molding of an MAG (Metal Active Gas) welding method and low working efficiency in a TIG (Tungsten Inert Gas) welding method are overcome; a great amount of post-welding work, such as cleaning, polishing and repairing, is saved; and the welding quality is greatly improved.
Description
Technical field
The present invention relates to a kind of welding method, specifically a kind of welding method that is used for the dynamic heated filament argon arc welding of TIP TIG belongs to non-melt pole electrical arc welding and arc smelting technical field.
Background technology
In rail vehicle was made, bigger, the in irregular shape parts of size were more, and are mostly punching press, shear constitution.Therefore, group is to being difficult to guarantee the uniformity and the accuracy of gap size in the process, and gap size differs, the uneven situation in end is difficult to avoid, thereby brings very big difficulty for follow-up welding sequence.At present in the rail vehicle manufacture process; The gas metal-arc weldings (stainless steel, carbon steel weld with MIG with MAG weldering and aluminium alloy) that adopt only adopt non-melt pole inert gas-shielded arc welding (TIG weldering) more in some surface members that the butt welded seam quality requirement is higher and spatter control is strict welding.Gas metal-arc welding cladding efficient is higher; Be suitable for organizing filling welding to the gap larger part; But less even almost lean on when tight when gap between workpiece to be welded, then can cause problems of welded quality such as welding fusion effect is not good enough, the face of weld reinforcement is excessive to take place.In addition, when treating that welding structure is a horizontal end structure as shown in Figure 1, it is bigger that gas metal-arc welding is implemented difficulty.Wherein comparatively speaking, be prone to welding in parts dislocation place, and concordant place weld job difficulty is very big in the end, has a strong impact on appearance of weld and welding quality, and needs a large amount of postwelding polishing repairs.Conventional TIG weldering is a kind of inert gas-shielded arc welding of extensive use during modern production is made, and is the representative of high-quality welding in the conventional welding method.Though this method can realize the silk filling weldering of workpiece interbody spacer to be welded, dislocation larger part, less at interval, concordant place, end from fusion welding owing to exist self-techniques such as low, the hot input quantity of welding efficiency is big, post welding distortion is serious not enough, can't adopt on a large scale.
TIP TIG welds new equipment, is called for short the TT welding machine, is by the patented technology of Austrian Siegfried Plasch in invention in 1999.This welding machine is development on traditional TIG weldering basis, and it adopts the dither wire feeder, when realizing automatic feeding, and gives welding wire dither function.TT welding machine welding wire in the vibration wire feed has high frequency linearity pumpback function, and send one to stop unlike one of the constant airspeed of wire feed at the uniform velocity and pulsed wire feeding.High frequency pumpback campaign gives welding wire a kind of extra transition power; Welding wire suddenly forward starting can be with molten drop to quicken simultaneously; And when the pumpback of welding wire high speed, molten drop is because its own inertial has overcome its surface tension; Continue to rush at the molten bath, reached and be similar to the action effect that " is fallen " molten bath by welding wire.This transition power that causes because of inertia, extremely beneficial to the droplet transfer, started and impelled molten drop initiatively to break away from welding wire and then carry out the transition to the action effect in the molten bath.Meanwhile, the kinetic energy of dither passes to welding pool through molten drop, thereby the liquid state of molten pool metal has been produced strong stirring action through welding wire, has improved the Welding Metallurgy effect, the effusion that help the molten bath inner air vent, is mingled with.Therefore, finally make the TT weldering embody TIG high-quality, MIG technical characterstic efficiently.In addition, the TT weldering also has the heated filament function, can realize helping the further lifting of cladding efficient and speed of welding to sending into the heating in advance of molten bath welding wire.This technological invention in industrially developed country such as America and Europes, has obtained applying on a large scale so far, has also caused showing great attention to of relevant industries in the recent period at home.But relatively lag behind so far, about this technological experimental study and further application and development.The present invention is directed in the for example rail vehicle processing and manufacturing the normal workpiece group to be welded that exists to gap length differ, the end is uneven; Thereby cause no matter conventional gas metal-arc welding (MAG, MIG) and non-melt pole inert gas-shielded arc welding (TIG) are in welding quality; Still all be difficult to the problem that meets the demands at aspects such as appearance of weld and production efficiencys, therefore need a kind of reasonable welding method carry out the control of each side.
Summary of the invention
The objective of the invention is to weld TIG high-quality, MIG technical characterstic efficiently based on TT; Utilization should the technology starting the arc, wire feed is independently controlled function; Exploitation has proposed the dynamic wire feed argon tungsten-arc welding of TIP TIG and has filled silk from molten complex welding method, and, a welding quality unmanageable production difficult problem relatively poor to uniformity because of member group to be welded for solving provides a kind of effective welding technique.
For realizing above-mentioned purpose, the present invention provides a kind of silk filling from molten complex welding method, it is characterized in that comprising the following steps:
Step 1: the source of welding current of TT welding machine and a utmost point of heater supply are connected with workpiece to be welded;
Step 2: the gas flow of adjustment feeder is adjusted in 12～15L/min scope the inert protective gas flow;
Step 3: the feed rate of welding wire of setting dynamic wire-feed motor; And down by ship shape welding gun start button rear end; In advance welding wire is inputed to the welding gun that integrates wire feed, gas guarantor and water-cooled, and finally derive by the welding wire ignition tip, and through adjusting the position of welding wire ignition tip; Distance between welding wire and tungsten electrode is controlled in 2～3mm scope, guarantees during work that welding wire can pass through the tungsten electrode center line;
Step 4: the operating current of the adjustment source of welding current and heater supply down by ship shape welding gun start button front end, starts welding arc to working value;
Step 5: after molten bath to be welded forms, implement the welding at concordant place, end between the workpiece to be welded;
Step 6: when implementing group between workpiece to be welded to the welding of misalignment larger part; Down by ship shape welding gun start button rear end; Realize the dither automatic feeding of dynamic wire-feed motor; And, make welding wire become 70 ° of-100 ° of angles to send into the molten bath, and then realize the high speed at misalignment place between the workpiece to be welded, high-quality silk filling welding with the welding direction of advance through adjustment welding gun angle;
Step 7: when welding finishes, at first, stop the dither wire feed through pressing ship shape welding gun start button rear end down, down by ship shape welding gun start button front end, extinguish arcs, welding process finishes.
The present invention has following beneficial effect:
1. the present invention proposes to fill silk from molten complex welding method; To be blended in one from molten, wire feed; Reduced group between workpiece to be welded to requiring and welding effect difficulty, the realization group has improved welding quality and operating efficiency to the welding between the relatively poor member of uniformity; Improve weld appearance and be shaped, save postwelding polishing repair, also reduced the filling metal consumption simultaneously;
2. the present invention has brought into play the high-quality and efficient characteristics of TT weldering, and bonding speed is fast, post welding distortion is little, quality of weld joint is high.
Description of drawings
Accompanying drawing is that the dynamic heated filament argon arc welding of TIP TIG fills silk from molten complex welding method principle schematic.
The specific embodiment
With reference to accompanying drawing; The device that the present invention uses is by the source of welding current 1, direct current heater supply 2, water cooling plant 3, feeder 4, dynamically wire-feed motor 5 and the welding gun 6 that integrates wire feed, air feed and water-cooled function are formed; The ground wire of the said source of welding current is connected to workpiece 7 to be welded or 8; The plate-like welding wire is delivered to welding gun welding wire mouth place through dynamic wire-feed motor through wire convey soft pipe.
Embodiment 1
Step 1: the source of welding current 1 of TT welding machine and a utmost point of heater supply 2 reliably are connected with the 301 corrosion resistant plates workpiece 7 to be welded or 8 that thickness is all 2mm;
Step 2: the gas flow of adjustment feeder 4 makes Ar gas (purity >=99.99%) flow adjust to 12L/min;
Step 3: the wire feed rate of adjusting dynamic wire-feed motor 5; The setting diameter is that the feed rate of the ER308LSi stainless steel welding stick of 1.0mm is 1.85m/min, and down by ship shape welding gun start button 6-1 rear end, in advance welding wire is inputed to welding gun 6; And finally derive by welding wire ignition tip 6-2; And through the position of adjustment welding wire ignition tip 6-2, making the distance between welding wire and tungsten electrode is 2mm, and welding wire can pass through the tungsten electrode center line when guaranteeing work simultaneously;
Step 4: select for use the source of welding current 1 to be the DC operation pattern, and the operating current of setting itself and heater supply 2 is respectively 150A and 80A,, starts welding arc down by ship shape welding gun start button 6-1 front end;
Step 5: after molten bath to be welded forms, implement the welding in concordant place, end (I district) between the workpiece 7 to be welded and 8;
Step 6: when implementing workpiece 7 to be welded and 8 groups to the welding of misalignment larger part (II district); Down by ship shape welding gun start button 6-1 rear end; Realize the dither automatic feeding of dynamic wire feeder 5; And, make welding wire become 70 ° of angles to send into the molten bath, and then realize the high speed in misalignment place between workpiece 7 to be welded and 8 (I district), high-quality silk filling welding with the welding direction of advance through adjustment welding gun angle;
Step 7: when welding finishes, at first, stop the dither wire feed through pressing ship shape welding gun start button 6-1 rear end down, down by ship shape welding gun start button 6-1 front end, extinguish arcs, welding process finishes.
Embodiment 2
Step 1: the source of welding current 1 of TT welding machine and a utmost point of heater supply 2 reliably are connected with the 09CuPCrNi weather-resistant steel plate workpiece 7 to be welded or 8 that thickness is all 2.0mm;
Step 2: the gas flow of adjustment feeder 4 makes Ar gas (purity >=99.99%) flow adjust to 15L/min;
Step 3: the wire feed rate of adjusting dynamic wire-feed motor 5; The setting diameter is that the feed rate of the HTW-44 II carbon steel welding wire of 1.2mm is 1.3m/min, and down by ship shape welding gun start button 6-1 rear end, in advance welding wire is inputed to welding gun 6; And finally derive by welding wire ignition tip 6-2; And through the position of adjustment welding wire ignition tip 6-2, making the distance between welding wire and tungsten electrode is 2.5mm, and welding wire can pass through the tungsten electrode center line when guaranteeing work simultaneously;
Step 4: select for use the source of welding current 1 to be the DC operation pattern, and the operating current of setting itself and heater supply 2 is respectively 180A and 80A,, starts welding arc down by ship shape welding gun start button 6-1 front end;
Step 5: after molten bath to be welded forms, implement the welding in concordant place, end (I district) between the workpiece 7 to be welded and 8;
Step 6: when implementing workpiece 7 to be welded and 8 groups to the welding of misalignment larger part (II district); Down by ship shape welding gun start button 6-1 rear end; Realize the dither automatic feeding of dynamic wire feeder 5; And, make welding wire become 100 ° of angles to send into the molten bath, and then realize the high speed in misalignment place between workpiece 7 to be welded and 8 (I district), high-quality silk filling welding with the welding direction of advance through adjustment welding gun angle;
Step 7: when welding finishes, at first, stop the dither wire feed through pressing ship shape welding gun start button 6-1 rear end down, down by ship shape welding gun start button 6-1 front end, extinguish arcs, welding process finishes.
Embodiment 3
Step 1: the source of welding current 1 of TT welding machine and a utmost point of heater supply 2 reliably are connected with the 6061-T6 aluminium alloy plate workpiece 7 to be welded or 8 that thickness is all 3.0mm;
Step 2: the gas flow of adjustment feeder 3 makes Ar gas (purity >=99.99%) flow adjust to 14L/min;
Step 3: the wire feed rate of adjusting dynamic wire-feed motor 5; The setting diameter is that the feed rate of the ER5087 aluminium alloy welding wire of 1.2mm is 4.0m/min, and down by ship shape welding gun start button 6-1 rear end, in advance welding wire is inputed to welding gun 6; And finally derive by welding wire ignition tip 6-2; And through the position of adjustment welding wire ignition tip 6-2, making the distance between welding wire and tungsten electrode is 3mm, and welding wire can pass through the tungsten electrode center line when guaranteeing work simultaneously;
Step 4: select for use the source of welding current 1 to be the alternate current operation pattern, and to set its operating current be 250A, need do not start heater supply 2 this moment,, start welding arc down by ship shape welding gun start button 6-1 front end;
Step 5: after molten bath to be welded forms, implement the welding in concordant place, end (I district) between the workpiece 7 to be welded and 8;
Step 6: when implementing workpiece 7 to be welded and 8 groups to the welding of misalignment larger part (II district); Down by ship shape welding gun start button 6-1 rear end; Realize the dither automatic feeding of dynamic wire feeder 5; And, make welding wire and welding direction of advance send into the molten bath at an angle of 90, and then realize the high speed in misalignment place between workpiece 7 to be welded and 8 (I district), high-quality silk filling welding through adjustment welding gun angle;
Step 7: when welding finishes, at first, stop the dither wire feed through pressing ship shape welding gun start button 6-1 rear end down, down by ship shape welding gun start button 6-1 front end, extinguish arcs, welding process finishes.
Claims (1)
1. a silk filling is characterized in that comprising the following steps: from molten complex welding method
Step 1: the source of welding current of TT welding machine and a utmost point of heater supply are connected with workpiece to be welded;
Step 2: the gas flow of adjustment feeder is adjusted in 12～15L/min scope the inert protective gas flow;
Step 3: the feed rate of welding wire of setting dynamic wire-feed motor; And down by ship shape welding gun start button rear end; In advance welding wire is inputed to the welding gun that integrates wire feed, gas guarantor and water-cooled, and finally derive by the welding wire ignition tip, and through adjusting the position of welding wire ignition tip; Distance between welding wire and tungsten electrode is controlled in 2～3mm scope, guarantees during work that welding wire can pass through the tungsten electrode center line;
Step 4: the operating current of the adjustment source of welding current and heater supply down by ship shape welding gun start button front end, starts welding arc to working value;
Step 5: after molten bath to be welded forms, implement the welding at concordant place, end between the workpiece to be welded;
Step 6: when implementing group between workpiece to be welded to the welding of misalignment larger part; Down by ship shape welding gun start button rear end; Realize the dither automatic feeding of dynamic wire-feed motor; And, make welding wire become 70 ° of-100 ° of angles to send into the molten bath, and then realize the high speed at misalignment place between the workpiece to be welded, high-quality silk filling welding with the welding direction of advance through adjustment welding gun angle;
Step 7: when welding finishes, at first, stop the dither wire feed through pressing ship shape welding gun start button rear end down, down by ship shape welding gun start button front end, extinguish arcs, welding process finishes.
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| CN201210000623XA CN102500883A (en) | 2012-01-04 | 2012-01-04 | Wire-filling and self-melting compound welding method |
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| CN201210000623XA CN102500883A (en) | 2012-01-04 | 2012-01-04 | Wire-filling and self-melting compound welding method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773592A (en) * | 2012-07-20 | 2012-11-14 | 长春轨道客车股份有限公司 | Method for welding carbon steel medium plate |
| CN105127554A (en) * | 2015-09-08 | 2015-12-09 | 刘文斌 | Wire feeding method for welding wires |
| CN105312738A (en) * | 2015-12-11 | 2016-02-10 | 哈尔滨理工大学 | Full-automatic TIP TIG vertical seam welding control method for liquefied natural gas (LNG) storage tank |
| CN106363274A (en) * | 2016-12-12 | 2017-02-01 | 四川石油天然气建设工程有限责任公司 | All-position root-welding method for carbon steel and low alloy steel pipeline |
| CN112388111A (en) * | 2020-12-02 | 2021-02-23 | 唐山松下产业机器有限公司 | TIG welding wire control method, TIG welding wire control system, TIG welding wire control device, and TIG welding wire control medium |
| CN112846635A (en) * | 2020-12-30 | 2021-05-28 | 柳州机车车辆有限公司 | Method for repairing transverse threaded hole of railway passenger car bogie |
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| CN101391338A (en) * | 2008-10-17 | 2009-03-25 | 哈尔滨建成集团有限公司 | Ferritic steel barrel butt-junction circular-seam hot-wire TIG multi-layer multipath welding method |
| CN102266998A (en) * | 2011-07-25 | 2011-12-07 | 中国石化集团第四建设公司 | Automatic argon tungsten-arc welding method for small-bore titanium pipeline |
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- 2012-01-04 CN CN201210000623XA patent/CN102500883A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101391338A (en) * | 2008-10-17 | 2009-03-25 | 哈尔滨建成集团有限公司 | Ferritic steel barrel butt-junction circular-seam hot-wire TIG multi-layer multipath welding method |
| CN102266998A (en) * | 2011-07-25 | 2011-12-07 | 中国石化集团第四建设公司 | Automatic argon tungsten-arc welding method for small-bore titanium pipeline |
Non-Patent Citations (1)
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| MIKE WILSON: "TIP TIG: new technology for welding", 《INDUSTRIAL ROBOT》, vol. 34, no. 6, 31 December 2007 (2007-12-31), pages 462 - 466 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773592A (en) * | 2012-07-20 | 2012-11-14 | 长春轨道客车股份有限公司 | Method for welding carbon steel medium plate |
| CN102773592B (en) * | 2012-07-20 | 2015-04-15 | 长春轨道客车股份有限公司 | Method for welding carbon steel medium plate |
| CN105127554A (en) * | 2015-09-08 | 2015-12-09 | 刘文斌 | Wire feeding method for welding wires |
| CN105312738A (en) * | 2015-12-11 | 2016-02-10 | 哈尔滨理工大学 | Full-automatic TIP TIG vertical seam welding control method for liquefied natural gas (LNG) storage tank |
| CN106363274A (en) * | 2016-12-12 | 2017-02-01 | 四川石油天然气建设工程有限责任公司 | All-position root-welding method for carbon steel and low alloy steel pipeline |
| CN112388111A (en) * | 2020-12-02 | 2021-02-23 | 唐山松下产业机器有限公司 | TIG welding wire control method, TIG welding wire control system, TIG welding wire control device, and TIG welding wire control medium |
| CN112846635A (en) * | 2020-12-30 | 2021-05-28 | 柳州机车车辆有限公司 | Method for repairing transverse threaded hole of railway passenger car bogie |
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Application publication date: 20120620 |