CN102500880B - Argon tungsten-arc welding control device and method - Google Patents
Argon tungsten-arc welding control device and method Download PDFInfo
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Abstract
The invention relates to an argon tungsten-arc welding control device. A direct current welding machine or a TIG (Tungsten Inert Gas) welding machine is electrically connected with a workpiece through a welding ground. The direct current welding machine or the TIG welding machine is electrically connected with a welding gun through a welding cable. At least one argon gas bomb is communicated with at least one input end of an argon gas control device through a pipeline. The output end of the argon gas control device is communicated with the welding gun through a pipeline. The argon gas control device is electrically connected with a control button on the welding gun through a control cable. In the argon gas control device, a first electromagnetic valve coil and a second electromagnetic valve coil in the secondary side of a transformer are connected in parallel; a second switch is a change-over switch; when the second switch is positioned at a B position, the second switch is connected in parallel with the control button; and when the second switch is positioned at an A position, the second switch is connected in series with the control button on a branch circuit of the first electromagnetic valve coil. Compared with a TIG welding argon gas control system, the argon tungsten-arc welding control device has the advantages that the welding quality is improved; and the utilization rate of the argon gas is saved by 2 percent to 28 percent.
Description
Technical field
The present invention relates to a kind of argon arc welding control method, especially for a kind of argon tungsten-arc welding control device and the method that improve the argon gas utilization rate.
Background technology
In the engineering constructions such as chemical industry, petrochemical industry, electric power, the argon Electricity Federation Welding that capping is filled in the full GTAW technique (hereinafter to be referred as TIG) of industrial pipeline or TIG bottoming, manual electric arc welding (hereinafter to be referred as SMAW) obtains applying very widely.Compare the full SMAW weldering of pipeline, the TIG Welding has easy operating, weld shielding is effective, the weld structure densification, and appearance of weld is attractive in appearance, without welding slag, flaw detection qualification rate advantages of higher.But it is higher that SMAW weldering production cost is compared in TIG weldering, main cause is that the TIG weldering used highly purified argon gas as protective gas, and argon gas is expensive, consumption is large.
Tig arc welding machine has the argon gas automatic control function, and operation principle is as follows:
In Fig. 1, argon bottle is connected with tig arc welding machine argon inlet mouth with tunger tube by pressure-reducing valve, argon flow amount meter, then by a tunger tube, tig arc welding machine argon gas gas outlet is connected with the TIG welding gun.During work, the welder presses the control button on welding gun, starts the electromagnetic gas valve work in tig arc welding machine, and argon gas enters welding gun through electromagnetic gas valve.Welding is pressed (or unclamping) control button after finishing again, and the electromagnetic gas valve cut-off does not have argon gas to flow out in the TIG welding gun, and argon gas is used and controlled reliably like this, and the argon gas utilization rate is high.
But special-purpose tig arc welding machine argon gas is controlled, its limitation and deficiency are arranged.There are a large amount of alloy steel material welding in engineering construction, alloy steel material TIG needs the butt welded seam back side to carry out argon-filled protection during welding, but special-purpose tig arc welding machine only has the single channel argon gas to control function, can only be controlled by the Butt welding gun argon gas, the butt welded seam back side is carried out argon-filled protection and can't be controlled with argon gas; Tig arc welding machine argon gas control function is located in tig arc welding machine in addition, and the TIG welding gun has three pipelines to be connected with welding machine, and the one, electrode holder line, the 2nd, tunger tube, the 3rd, control cables.Be subject to the welding torch cable length restriction, tig arc welding machine is suitable for the welding of weldment from the position of welding machine close together, and the general job radius is no more than 10m.But the engineering construction pipeline welding has at a distance, high-altitude is many, the characteristics such as setting disperses, mobility is large, near welding machine, weld job is few on the contrary.Add welding machine weight heavier, be not easy to random carrying, welding machine is concentrated setting in welding machine case or welding machine builder's temporary shed generally.But like this,, during remote and high-altitude TIG welding procedure, must draw a very long tunger tube and the welding control cables leads to the TIG welding gun from tig arc welding machine.Due to the argon gas long flow path, have the following disadvantages:
A, argon shield lag behind, and argon gas has certain waste.This is because after pressing control button, high frequency starting the arc function operation, and the welding arc that ignites, although in welding controller, magnetic valve is also worked simultaneously, argon gas arrives welding gun needs certain hour, causes argon shield to lag behind.Starting the arc place, because argon shield is bad, easily produces the defects such as pore.In order to overcome argon shield hysteresis problem, when operating, the welder exits a period of time in advance, reignition of arc welding after purity of argon reaches.And such waste that has caused many argon gas.
B, argon bottle are placed near welding machine, and away from welding position, argon flow amount is regulated very inconvenient.
C, tunger tube are long, the tunger tube cracky, damaged after the gas leakage welding quality impact, and cause the waste of argon gas.
D, tunger tube and control line are very long, have increased the weight of welding gun and welding cable, use and reclaim inconvenience, and have increased the fault rate of welding machine and control system.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of argon tungsten-arc welding control device and method, can overcome in prior art the argon gas utilization rate low, protect insecure defect.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of argon tungsten-arc welding control device, DC welder or tig arc welding machine are electrically connected to workpiece by welding ground, DC welder or tig arc welding machine are electrically connected to welding gun by welding cable, at least one argon bottle is communicated with at least one input of argon gas control device by pipeline, the output of argon gas control device is communicated with welding gun by pipeline, and the argon gas control device is electrically connected to the control button on welding gun by control cables;
In described argon gas control device, the first electromagnetic valve coil and the second electromagnetic valve coil parallel connection in the secondary side of transformer, second switch is a switching switch, when second switch is positioned at the B position, second switch is in parallel with control button;
The primary side of transformer is in series with the first switch;
When second switch is positioned at the A position, second switch on the branch road of the first electromagnetic valve coil with control button for connecting.
Two argon bottles are communicated with two inputs of argon gas control device by pipeline respectively, and the output of argon gas control device is communicated with the reverse side of welding gun and workpiece by pipeline respectively.
An argon bottle is communicated with two inputs of argon gas control device by two pipelines respectively, and the output of argon gas control device is communicated with the reverse side of welding gun and workpiece by pipeline respectively.
The pipeline be communicated with the reverse side of workpiece, be communicated with the magnetic valve at the first electromagnetic valve coil place, and the pipeline be communicated with welding gun is communicated with the magnetic valve at the second electromagnetic valve coil place.
Described the first electromagnetic valve coil and the second electromagnetic valve coil also are parallel with respectively indicator lamp.
A kind of method that adopts above-mentioned device to carry out argon tungsten-arc welding control comprises the following steps:
1) DC welder or tig arc welding machine are electrically connected to workpiece by welding ground, DC welder or tig arc welding machine are electrically connected to welding gun by welding cable;
2) by the output pipe of argon bottle, the first magnetic valve or the second magnetic valve by the argon gas control device is communicated with welding gun, and control button is electrically connected to the argon gas control device by control cables, and second switch is located to the A position;
3) open the first switch, control the supply of argon gas when the welder operates by control button;
Realize improving the argon gas utilization rate by above-mentioned steps in the argon tungsten-arc welding operation.
The scheme of further optimizing comprises the following steps:
1) DC welder or tig arc welding machine are electrically connected to workpiece by welding ground, DC welder or tig arc welding machine are electrically connected to welding gun by welding cable;
2) by the output pipe of argon bottle, the first magnetic valve by the argon gas control device is communicated with welding gun, control button is electrically connected to the argon gas control device by control cables, the second magnetic valve by another output pipe of another argon bottle or same argon bottle by the argon gas control device is communicated with the reverse side of workpiece, second switch is located to the B position, open the first switch, give in advance the reverse side applying argon gas of workpiece, treat that the reverse side of workpiece is substituted the bad for the good, second switch is located to the A position;
Control the supply of argon gas when 3) welder operates by control button;
Realize in the argon tungsten-arc welding operation improving the argon gas utilization rate by above-mentioned steps, and realize in operation the two-sided protection to workpiece.
In engineering construction, the welding of metallic conduit and equipment adopts GTAW in a large number, and GTAW needs in Butt welding gun argon gas in argon gas and steel alloy back side argon-filled protection device to be controlled, and prevents the argon gas waste.But existing tig arc welding machine is controlled function without argon gas in the argon-filled protection device of the back side, and when tig arc welding machine is far away apart from welding position, because of gas circuit is very long can't Butt welding gun in argon gas controlled or to control effect poor.
A kind of argon tungsten-arc welding control device provided by the invention and method, by the argon gas control device arranged, overcome because operating point is larger apart from the welding machine argon gas waste caused far away operating personnel, the technical problem that the argon gas utilization rate is low.This is because the volume of argon gas control device is little, lightweight, carries very conveniently, and the argon gas control device both can be placed near welding machine, also can be placed on as required near welding position, when work high above the ground, even just was placed on or hangs over the weld bond side.Argon bottle is followed welding argon gas control device and is moved, and can also with argon gas, be controlled by alloy steel backing face argon-filled protection in addition, has greatly improved GTAW argon gas utilization rate, has reduced welding cost.Compare tig arc welding machine, greatly shortened gas circuit and control line length, impact far and near with the welding machine positional distance, height that welding position is not subject to.
Control function because the argon gas control device has the two-way argon gas, both can control separately the welding gun argon gas, can control again welding gun and workpiece reverse side argon-filled protection argon gas simultaneously.
The input of argon gas control device is communicated with argon bottle by one or two argon gas pipelines, and output passes through one or two argon gas pipelines and is communicated with welding gun and back side argon-filled protection device; The welding argon gas is controlled and is connected with the control button on welding gun by control cables.Operating personnel realize the control to the welding argon gas by the control button on welding gun.
The argon gas control device can adopt the 220V AC power, and plug is connected and can uses with supply socket with on-the-spot sanding machine, does not need to lay separately service cable.
Owing to having adopted the argon gas control device, thus the tig arc welding machine in of the present invention, can substitute with common DC welder, thus larger providing cost savings.
According to the observation and the statistics, under TIG welding argon gas control system argon gas utilization rate perfect condition, it is 94% left and right, in the situation that pipeline extends or has damaged, utilization rate significantly reduces, as argon-filled protection in the need pipe, be workpiece reverse side argon-filled protection, need another one operating personnel co-operating, and TIG welding argon gas control system argon gas utilization rate is 70%～80%; And adopt method of the present invention, and no matter argon filling whether in pipe, the argon gas utilization rate all can reach more than 98%, joint argon effect is fairly obvious.
Compare TIG welding argon gas control system, the argon gas utilization rate saving of argon gas control device reaches 2%～28%.By certain company, undertake the construction of one install net charge 6,000,000, the general middle-size and small-size chemical industry engineering of 40,000 left and right of pipeline dyne, adopt TIG welding argon gas control system, need to consume 600 bottles of left and right of argon gas, 4.8 ten thousand yuan of expenses; Weld the argon gas controller as adopted, only consume 370～420 bottles of argon gas, expense 2.2～2.5 ten thousand yuan, (electric quantity consumption is very little to deduct 2000 yuan of welding argon gas controller manufacturing cost and the electricity charge, can ignore) left and right, an engineering gets final product cost saving 0.9～1.2 ten thousand yuan, and economic benefit is comparatively remarkable.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
The integrated connection schematic diagram that Fig. 1 is prior art.
The integrated connection schematic diagram that Fig. 2 is the embodiment of the present invention 3.
The integrated connection schematic diagram that Fig. 3 is the embodiment of the present invention 4.
The circuit diagram that Fig. 4 is argon gas control device in the present invention.
The specific embodiment
Embodiment 1:
In Fig. 2, a kind of argon tungsten-arc welding control device, DC welder 11 or tig arc welding machine are electrically connected to workpiece 1 by welding ground 7, DC welder 11 or tig arc welding machine are electrically connected to welding gun 3 by welding cable 8, at least one argon bottle 6 is communicated with the input of argon gas control device 5 by pipeline, the output of argon gas control device 5 is communicated with welding gun 3 by pipeline, and argon gas control device 5 is electrically connected to the control button 4 on welding gun 3 by control cables 9;
In Fig. 4, in described argon gas control device 5, the first electromagnetic valve coil DF1 and the second electromagnetic valve coil DF2 parallel connection in the secondary side of transformer, second switch K2 is a switching switch, when second switch K2 is positioned at the B position, second switch K2 is in parallel with control button 4; The AC power of a side joint 220V of transformer, transfer the 24V power supply to by transformer.When second switch K2 is positioned at the A position, second switch K2 on the branch road of the first electromagnetic valve coil DF1 with control button 4 for connecting.
In the scheme of optimizing, two argon bottles 6 are communicated with the input of argon gas control device 5 by pipeline respectively, and the output of argon gas control device 5 is communicated with the reverse side of welding gun 3 and workpiece 1 by pipeline respectively.The reverse side of described workpiece, be the reverse side of workpiece machined surface, when workpiece is pipeline, is generally the inside of pipeline.
The pipeline be communicated with the reverse side of workpiece 1, be communicated with the magnetic valve at the first electromagnetic valve coil DF1 place, and the pipeline be communicated with welding gun 3 is communicated with the magnetic valve at the second electromagnetic valve coil DF2 place.
Described the first electromagnetic valve coil DF1 and the second electromagnetic valve coil DF2 also are parallel with respectively indicator lamp.This indicator lamp is used to indicate the duty of the first electromagnetic valve coil DF1 and the second electromagnetic valve coil DF2.
Embodiment 2:
A kind of method that adopts above-mentioned device to carry out argon tungsten-arc welding control comprises the following steps:
1) DC welder 11 or tig arc welding machine are electrically connected to workpiece 1 by welding ground 7, DC welder 11 or tig arc welding machine are electrically connected to welding gun 3 by welding cable 8;
2) by argon bottle 6, the first magnetic valve or the second magnetic valve by argon gas control device 5 is communicated with welding gun 3, and control button 4 is electrically connected to argon gas control device 5 by control cables 9, and second switch K2 is located to the A position; Control button 4 is the QT button in Fig. 3.
3) open the first K switch 1, control the supply of argon gas when the welder operates by control button 4; Press control button 4 first electromagnetic valve coil DF1 obtain electric, the first solenoid valve conduction, argon gas from argon bottle 6 through 3 outputs of the first magnetic valve, welding gun.This sentences the first electromagnetic valve coil DF1 coil is that example describes, and as can be seen from Figure 4, from the second magnetic valve access, is also feasible.
Realize improving the argon gas utilization rate by above-mentioned steps in the argon tungsten-arc welding operation.This is owing to argon bottle 6 can being arranged near pad, having shortened supply air line, thereby improved the argon gas utilization rate.And in this example, can substitute the more expensive tig arc welding machine of price with common direct current welding, thereby save cost.
Embodiment 3:
Further optimize on embodiment 2, comprise the following steps:
In Fig. 2,1) DC welder 11 or tig arc welding machine are electrically connected to workpiece 1 by welding ground 7, DC welder 11 or tig arc welding machine are electrically connected to welding gun 3 by welding cable 8;
2) by argon bottle 6, the first magnetic valve by argon gas control device 5 is communicated with welding gun 3, control button 4 is electrically connected to argon gas control device 5 by control cables 9, the second magnetic valve by another argon bottle 6 by argon gas control device 5 is communicated with the reverse side of workpiece 1, second switch K2 is located to the B position, opens the first K switch 1, the first electromagnetic valve coil DF1 and obtain electric, the first solenoid valve conduction, give in advance the reverse side applying argon gas of workpiece 1, treat that the reverse side of workpiece 1 is substituted the bad for the good, second switch K2 is located to the A position;
Control the supply of argon gas when 3) welder operates by control button 4; Now the first electromagnetic valve coil DF1 and the second electromagnetic valve coil DF2 break-make are controlled by control button 4;
Realize in the argon tungsten-arc welding operation improving the argon gas utilization rate by above-mentioned steps, and the argon gas that in operation, workpiece is carried out to two-sided protection is controlled.Due to the reverse side applying argon gas that has adopted workpiece 1, improved welding quality in this example, and, unlike the prior art, also controlled by the welder for the pipeline of reverse side applying argon gas, thus larger raising the argon gas utilization rate.
Embodiment 4:
Further optimize on embodiment 2, comprise the following steps:
In Fig. 3,1) DC welder 11 or tig arc welding machine are electrically connected to workpiece 1 by welding ground 7, DC welder 11 or tig arc welding machine are electrically connected to welding gun 3 by welding cable 8;
2) two output pipes are set on argon bottle 6, wherein output pipe is communicated with welding gun 3 by the first magnetic valve of argon gas control device 5, control button 4 is electrically connected to argon gas control device 5 by control cables 9, the second magnetic valve by another output pipe by argon gas control device 5 is communicated with the reverse side of workpiece 1, second switch K2 is located to the B position, open the first K switch 1, the first electromagnetic valve coil DF1 obtains electric, the first solenoid valve conduction, give in advance the reverse side applying argon gas of workpiece 1, treat that the reverse side of workpiece 1 substitutes the bad for the good, second switch K2 is located to the A position;
Control the supply of argon gas when 3) welder operates by control button 4; Now the first electromagnetic valve coil DF1 and the second electromagnetic valve coil DF2 break-make are controlled by control button 4;
Realize in the argon tungsten-arc welding operation improving the argon gas utilization rate by above-mentioned steps, and the argon gas that in operation, workpiece is carried out to two-sided protection is controlled.Owing to only having adopted an argon bottle 6, with embodiment 3, compare in this example, mobile more convenient.
Claims (7)
1. an argon tungsten-arc welding control device, DC welder (11) or tig arc welding machine are electrically connected to workpiece (1) by welding ground (7), DC welder (11) or tig arc welding machine are electrically connected to welding gun (3) by welding cable (8), it is characterized in that: at least one argon bottle (6) is communicated with at least one input of argon gas control device (5) by pipeline, the output of argon gas control device (5) is communicated with welding gun (3) by pipeline, and argon gas control device (5) is electrically connected to the control button (4) on welding gun (3) by control cables (9);
In described argon gas control device (5), the first electromagnetic valve coil (DF1) and the second electromagnetic valve coil (DF2) parallel connection in the secondary side of transformer, second switch (K2) is a switching switch, and when second switch (K2) is positioned at the B position, second switch (K2) is in parallel with control button (4);
The primary side of transformer is in series with the first switch (K1);
When second switch (K2) is positioned at the A position, second switch (K2) on the branch road of the first electromagnetic valve coil (DF1) with control button (4) for connecting.
2. a kind of argon tungsten-arc welding control device according to claim 1, it is characterized in that: two argon bottles (6) are communicated with two inputs of argon gas control device (5) by pipeline respectively, and the output of argon gas control device (5) is communicated with the reverse side of welding gun (3) and workpiece (1) by pipeline respectively.
3. a kind of argon tungsten-arc welding control device according to claim 1, it is characterized in that: an argon bottle (6) is communicated with two inputs of argon gas control device (5) by two pipelines respectively, and the output of argon gas control device (5) is communicated with the reverse side of welding gun (3) and workpiece (1) by pipeline respectively.
4. according to the described a kind of argon tungsten-arc welding control device of claim 2 or 3, it is characterized in that: the pipeline be communicated with the reverse side of workpiece (1), with the magnetic valve at the first electromagnetic valve coil (DF1) place, be communicated with, the pipeline be communicated with welding gun (3), be communicated with the magnetic valve at the second electromagnetic valve coil (DF2) place.
5. a kind of argon tungsten-arc welding control device according to claim 1, it is characterized in that: described the first electromagnetic valve coil (DF1) and the second electromagnetic valve coil (DF2) also are parallel with respectively indicator lamp.
6. a method that adopts the described device of claim 1-5 to carry out argon tungsten-arc welding control is characterized in that comprising the following steps:
1) DC welder (11) or tig arc welding machine are electrically connected to workpiece (1) by welding ground (7), DC welder (11) or tig arc welding machine are electrically connected to welding gun (3) by welding cable (8);
2) by the output pipe of argon bottle (6), the first magnetic valve or the second magnetic valve by argon gas control device (5) is communicated with welding gun (3), control button (4) is electrically connected to argon gas control device (5) by control cables (9), second switch (K2) is located to the A position;
3) open the first switch (K1), control the supply of argon gas when the welder operates by control button (4);
Realize improving the argon gas utilization rate by above-mentioned steps in the argon tungsten-arc welding operation.
7. method according to claim 6 is characterized in that comprising the following steps:
1) DC welder (11) or tig arc welding machine are electrically connected to workpiece (1) by welding ground (7), DC welder (11) or tig arc welding machine are electrically connected to welding gun (3) by welding cable (8);
2) by the output pipe of argon bottle (6), the first magnetic valve by argon gas control device (5) is communicated with welding gun (3), control button (4) is electrically connected to argon gas control device (5) by control cables (9), the second magnetic valve by another output pipe of another argon bottle (6) or same argon bottle (6) by argon gas control device (5) is communicated with the reverse side of workpiece (1), second switch (K2) is located to the B position, open the first switch (K1), give in advance the reverse side applying argon gas of workpiece (1), treat that the reverse side of workpiece (1) substitutes the bad for the good, second switch (K2) is located to the A position,
Control the supply of argon gas when 3) welder operates by control button (4);
Realize in the argon tungsten-arc welding operation improving the argon gas utilization rate by above-mentioned steps, and realize in operation the two-sided protection to workpiece.
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| CN102500880B true CN102500880B (en) | 2013-12-11 |
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| CN102922101A (en) * | 2012-11-19 | 2013-02-13 | 杭州市设备安装有限公司 | Pipeline TIG (Tungsten Inert Gas) welding method for crack of two pipes of compactly and densely-arranged metal pipeline and special welding tool |
| CN107378206A (en) * | 2017-08-03 | 2017-11-24 | 合肥锦和信息技术有限公司 | A kind of argon tungsten-arc welding argon filling adjusting means |
| CN108655549A (en) * | 2018-07-02 | 2018-10-16 | 山东电建建设集团有限公司 | Argon gas throttling detection control apparatus and system |
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| US2747065A (en) * | 1951-11-01 | 1956-05-22 | Kellogg M W Co | Method for welding a joint |
| US3808397A (en) * | 1970-11-23 | 1974-04-30 | Us Navy | Tungsten inert gas welding control unit with a filler metal feeding means |
| CN200998806Y (en) * | 2006-08-01 | 2008-01-02 | 新疆艾特科技开发有限公司 | Numeric control grouping gas protection weldering automatic head sealing machine |
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Effective date of registration: 20230920 Address after: 443000 No. 4 Tucheng Road, Xiling District, Yichang City, Hubei Province Patentee after: CHINA NATIONAL CHEMICAL ENGINEERING NO.16 CONSTRUCTION Co.,Ltd. Patentee after: China Chemical Equipment Technology Group Co.,Ltd. Address before: No.4, Tucheng Road, Yichang City, Hubei Province, 443100 Patentee before: CHINA NATIONAL CHEMICAL ENGINEERING NO.16 CONSTRUCTION Co.,Ltd. |