CN204171519U - Based on the two tungsten electrode coupled arc weldering device of controlled shunting that center fills silk - Google Patents
Based on the two tungsten electrode coupled arc weldering device of controlled shunting that center fills silk Download PDFInfo
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- CN204171519U CN204171519U CN201420441994.6U CN201420441994U CN204171519U CN 204171519 U CN204171519 U CN 204171519U CN 201420441994 U CN201420441994 U CN 201420441994U CN 204171519 U CN204171519 U CN 204171519U
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Abstract
The purpose of this utility model is to provide the two tungsten electrode coupled arc weldering device of the controlled shunting filled silk based on center and welding method, two tungsten electrodes are arranged symmetrically with very little angle in a welding gun body, by IGBT control module to form by-pass shunt coupled arc, filler wire is directly sent into from the center of coupled arc, utilize the hottest part of electric arc to improve wire melting efficiency, and utilize by-pass shunt accurately to control the heat input of welding wire and mother metal.The utility model can realize, to efficient, the stable heating of packing material, effectively accurately controlling again the fusing amount of welding wire and mother metal, thus while the welding of guarantee high efficiency, realizing the accurate control to thermal weld stress.The utility model had both been applicable to efficient, the high-quality welding of same material, and being applicable to again nickel-base alloy has the reliable of the foreign material of strict demand to be connected with stainless steel, copper etc. to dilution control.
Description
Technical field
The utility model relates to a kind of welder.
Background technology
In traditional TIG landfilling area technique, filler wire is from the feeding molten bath, front end of welding gun, welding wire and tungsten electrode are almost in 90 °, the heat melts filler wire at molten bath and electric arc edge is relied on to weld, and TIG arc temperature highest zone is positioned at arc center, thus traditional TIG landfilling area fails effectively to utilize electric arc heat, causes its wire melting efficiency low.In addition, due to the wire feed angle of traditional TIG landfilling area and the restriction of wire feed position, not only cause that the volume of welding gun end is large, reliability of positioning is poor, and wire feeder determine welding gun can only towards a direction welding.When welding direction changes, welding gun also needs to control by the 6th axle of robot, also needs additionally to increase turntable to control for complex situations.Therefore, the accessibility of the flexibility and robot welding that how to improve the wire melting efficiency of TIG weldering, reduce the overall dimension of welding gun, improve its operation becomes problem demanding prompt solution.
The people such as the T.Opderbecke of liquid air company of France propose a kind of TOPTIG welding procedure, this technique adopts a kind of special wire feeding mode, welding wire is substantially parallel with tungsten electrode cone, welding wire is sent directly into arc temperature highest portion and divides, and under various heat, power effect, be fused into the molten drop of similar MIG weldering.The patent No. be the file record of EP1459831 B1 a kind of TOPTIG welding gun and welding method thereof, its wire melting efficiency is high, the droplet transfer is controlled, it is non-directional to weld, both the arc stability and the heat that had remained original TIG weldering input low feature, greatly improve again wire melting efficiency.But the same with traditional TIG landfilling area, in TOPTIG Welding, for obtaining higher wire melting efficiency, need adopt larger welding current, this must cause thermal weld stress to increase, thus causes the problem such as welding deformation, heat affected area expansion of workpiece.
Summary of the invention
The purpose of this utility model is to provide and improves welding efficiency, the controlled shunting pair tungsten electrode coupled arc weldering device based on center silk filling accurately controlling thermal weld stress and welding method.
The purpose of this utility model is achieved in that
The two tungsten electrode coupled arc weldering device of controlled shunting that the utility model fills silk based on center, it is characterized in that: comprise welding gun, welding gun power supply, IGBT flow control module, described welding gun comprises welding torch casing, main road tungsten electrode, bypass tungsten electrode, welding torch casing is arranged main road tungsten electrode groove, bypass tungsten electrode groove, welding wire groove, welding wire slot is between main road tungsten electrode groove and bypass tungsten electrode groove, main road tungsten electrode groove, bypass tungsten electrode groove, the end of welding wire groove arranges main road tungsten electrode ignition tip respectively, bypass tungsten electrode ignition tip, wire feeding mouth, main road tungsten electrode groove, bypass tungsten electrode groove, in welding wire groove, main road tungsten electrode is installed respectively, bypass tungsten electrode and welding wire, and main road tungsten electrode, bypass tungsten electrode, the end of welding wire passes main road tungsten electrode ignition tip respectively, bypass tungsten electrode ignition tip, wire feeding mouth is to the outside of welding torch casing, the negative pole of the source of welding current connects main road tungsten electrode, the positive pole of the source of welding current separates two-way, the first via connects mother metal, second tunnel connects IGBT flow control module, IGBT flow control model calling bypass tungsten electrode.
The two tungsten electrode coupled arc weldering device of controlled shunting that the utility model fills silk based on center can also comprise:
1, the first via between welding gun power supply and mother metal installs current sensor, current sensor by connection IGBT flow control module, the circuit between current sensor and IGBT flow control module is installed and is gathered current sensor signal and control IGBT flow control module thus control the control system that between main road tungsten electrode and bypass tungsten electrode, electric current distributes.
2, the angle between main road tungsten electrode and bypass tungsten electrode is 15 °-30 °; Level interval is 2mm-7mm, and main road tungsten electrode is 3mm-10mm relative to the overhang of main road tungsten electrode ignition tip, and bypass tungsten electrode is 3mm-10mm relative to the overhang of bypass tungsten electrode ignition tip, and welding wire is 5mm-15mm relative to the overhang of wire feeding mouth.
Advantage of the present utility model is:
1, this welding gun and welding method thereof can utilize the zone melting welding wire that arc temperature is the highest, improve the utilization rate of arc energy, and then realize high wire melting efficiency (being 2-5 times of conventional TIG landfilling area).
2, design that is main, the two tungsten electrode of bypass is adopted, coupled arc burns between tungsten electrode and workpiece at two, arc stability is good, welding process can be made more stable, and improve appearance of weld, being beneficial to that formation is very regular, smooth weld, which greatly improves welding quality, is a kind of stable, practical welding procedure.
3, the two tungsten electrode design of single supply, the wire feed rate of welding wire is no longer dependent on welding current, and can effectively independently regulate and control welding wire loading, welding wire melts transition under coupled arc effect, can conveniently realizing short circuit, penetrate and drip and spray transfer mode, obtaining the stable transient process without splashing.In addition, because wire melting directly enters weld seam, electrode is also responsive no longer especially to the distance of workpiece, is beneficial to and improves welding process, raising weldquality;
4, the unique layout of main, bypass tungsten electrode and welding wire reduces the overall dimension of welding gun, the wire feeding mode that center fills silk simultaneously no longer needs the directions question considering wire feed, thus all welding positions can be applicable to as MIG, for the welded accessibility of complexity when strengthening robot welding, be a kind of efficient, high-quality, controlled welding technology;
5, the method belongs to the remodeling of arc welding, so it is also a kind of high-efficiency welding method of low cost.Be applied in welding production, will greatly enhance productivity, reduce welding cost, improve welding quality, efficient, high-quality and low cost welding can be realized, there is very large engineering practical value;
6, because this technique belongs to TIG landfilling area in essence, and possess the features such as heat input is low, wire melting efficiency is high, welding deformation is little simultaneously, by adjusting master/by-pass current ratio and tungsten electrode spatial arrangement mode, can effectively change arc shape and thermal weld stress, realize the accurate heating to mother metal and welding wire, to reduce the heat input and welding deformation that act on workpiece, improve welding quality, high deposition rate, low_input_power welding can be realized.Therefore, the method had both been applicable to efficient, the high-quality welding of same material, and being applicable to again nickel-base alloy has the reliable of the foreign material of strict demand to be connected with stainless steel, copper/steel etc. to dilution control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 a is welding gun front view, and Fig. 2 b is welding gun sectional view, and Fig. 2 c is welding gun top view.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, the utility model is described in more detail:
The two tungsten electrode coupled arc Fundamentals of Welding figure of the controlled shunting that fills silk centered by Fig. 1, to fill silk the compositions such as controlled shunting two tungsten electrode arc welding gun 6, IGBT flow control module 8, control system 10, current sensor 11 and the sources of welding current 12 primarily of wire feed rolls 3, center.In welding process, by the welding current of current sensor 11 monitoring stream through mother metal, and change main, by-pass current proportioning by control system 10 and IGBT flow control module 8, realize the accurate heating to mother metal and welding wire.
Fig. 2 a, Fig. 2 b, Fig. 2 c are that center fills silk the two tungsten electrode coupled arc welding gun structure figure of controlled shunting, primarily of compositions such as main road tungsten electrode 2, welding wire 4, bypass tungsten electrode 5, main road tungsten electrode folder 12, bypass tungsten electrode folder 15, metal wire-feeding pipe 15, insulating barrier 18, welding gun valve 16 and welding torch casings 17.Wherein main road tungsten electrode 2 and bypass tungsten electrode 5 are arranged symmetrically (15 °-30 °) with very little angle in rifle body, and main road tungsten electrode 2 is extremely connected with power supply one, and bypass tungsten electrode 5 points walks the welding current of a part by mother metal; Meanwhile, welding wire 4 does not connect power supply and is admitted to coupled arc central temperature highest point from two tungsten electrodes middle (welding wire is substantially parallel with two tungsten pin cones).Concrete welding step is as follows:
Step 1: surface treatment and retaining wall on slope are carried out as required in the position to be welded of workpiece 7, the two tungsten electrode coupled arc welding gun 6 of the controlled shunting that filled silk at center is fixed on above jig, ensures that rifle body is basic vertical with jig;
Step 2: workpiece 7 is placed on jig, the position of adjustment seam 1 make it to fill silk with the center track route at welding wire 4 tip of the two tungsten electrode coupled arc welding gun 6 of controlled shunting overlaps, and vertical with master, bypass tungsten electrode line, then utilizes fixture to be fixed;
Step 3: adjustment tungsten electrode overhang (3mm-10mm), with welding wire 4 overhang (welding wire tip is roughly positioned in the middle of two tungsten electrode tips), guarantee that both sides tungsten electrode is placed in mother metal 7 seam both sides symmetrically and is positioned at sustained height (2mm-8mm);
Step 4: setting welding condition, welding current I is between 50A-300A, by-pass current Ip is between 20A-200A, speed of welding is between 0.4m/min-3m/min, wire feed rate is between 2.0m/min ~ 5.0m/min, main road shield gas flow rate is between 5-15L/min, and bypass protection gas flow is between 2-10L/min;
Step 5: open the source of welding current 12, start IGBT flow control module 8, ignite electric arc, and startup wire feed switch 3 and jig walking switch weld.One part of current Im returns power supply through mother metal, and another part Ip to wire back source through by-pass, forms coupled arc 9 simultaneously, guarantee that welding wire is admitted to coupled arc 9 central temperature highest zone and welds between main, bypass tungsten electrode;
Step 6: in welding process, is detected the welding current flowing through workpiece, utilizes control system 10 to regulate the size of bypass welding current by current sensor 11, change the form of coupled arc 9, realize the exact heat to welding wire 4 and mother metal 7.
Step 7: when welding closes to an end, first closes wire feed switch, then extinguishes welding arc, closes the source of welding current 12, IGBT control system 10 and welding walking mechanism switch after treating arc extinction again.
The utility model relates to the two tungsten electrode coupled arc welding gun of a kind of controlled shunting based on center silk filling and welding method thereof, and it is made up of center silk filling by-pass shunt pair tungsten electrode coupled arc welding gun, IGBT flow control module and the current detecting systems etc. of original creation design a source of welding current.This welding gun rifle body by leading, bypass tungsten electrode and ignition tip, center-filled welding wire and wire feeding mouth, welding gun insulation shell etc. form, wherein main road tungsten electrode is connected with a pole (if connecing negative pole when power supply is direct current) of power supply, bypass tungsten electrode is connected with another pole (if connecing positive pole when power supply is direct current) of power supply by IGBT control system, angle between two tungsten electrodes very little (15 °-30 °), welding wire passes between two tungsten electrodes.During welding, by-pass shunt coupled arc is formed between master, bypass tungsten electrode, filler wire (not connecing power supply) is directly sent into from the center of coupled arc, utilizes the hottest part of electric arc to realize high wire melting efficiency, and utilizes by-pass shunt accurately to control the heat input of mother metal.Such design can utilize the highest zone melting welding wire of arc temperature to weld, and improves arc energy utilization rate and wire melting efficiency (being 2-5 times of conventional TIG landfilling area); Meanwhile, two tungsten electrode coupled arc is very stable, and appearance of weld is very regular, smoothly and not solidifies ripple; Welding wire does not connect the independence adjustment that power supply can realize wire feed rate, eliminates spatter phenomenon, improves welding process; By-pass shunt accurately can control the fusing amount of welding wire and mother metal.The method had both been applicable to efficient, the high-quality welding of same material, and being applicable to again nickel-base alloy has the reliable of the foreign material of strict demand to be connected with stainless steel, copper/steel etc. to dilution control.In addition, such design reduces the overall dimension of welding gun, does not need the directional problems considering wire feed again in welding process, thus can be applicable to all welding positions as conventional MIG weldering, for the welded accessibility of complexity when strengthening robot welding.
The step implementing welding with said apparatus is as follows:
Step 1: the geometric parameter of adjustment welding gun, adjustment is main, the overhang (3mm-10mm) of bypass tungsten electrode, regulate the angle (15 °-30 °) between two tungsten electrodes and level interval (2mm-7mm), the overhang (5mm-15mm) of adjustment welding wire, guarantees that welding wire passes in the middle of two tungsten electrodes;
Step 2: treat welder's part and carry out pre-welding treatment (surface finish and retaining wall on slope etc.), the arc welding gun adjusted is fixed on and regulates on support or mechanical arm, guarantee that welding gun axis and jig are substantially vertical, ensure that the most advanced and sophisticated track route of welding wire in welding gun overlaps with position while welding;
Step 3: setting welding condition, welding current I is between 50 ~ 300A, by-pass current Ip is between 20 ~ 200A, speed of welding is 0.4 ~ 3.0m/min, wire feed rate is between 2.0 ~ 5.0m/min, main road shield gas flow rate is between 5 ~ 15L/min, and bypass protection gas flow is between 2 ~ 10L/min;
Step 4: open the source of welding current and IGBT control system, start welding walking mechanism control system, ignite by-pass shunt coupled arc, carries out center landfilling area, guarantees that welding wire is admitted to coupled arc central temperature highest zone and welds;
Step 5: in welding process, one part of current flows through mother metal and returns power supply, another part to be wired back source through by-pass, the welding current flowing through workpiece is detected by current sensor, control system is utilized to regulate the size of bypass welding current, change coupled arc form, realize the exact heat to welding wire and mother metal.
Step 6: when welding closes to an end, first closes wire feed switch, then extinguishes welding arc, closes the source of welding current, IGBT control system and welding walking mechanism switch after treating arc extinction again.
Claims (3)
1. based on the two tungsten electrode coupled arc weldering device of controlled shunting that center fills silk, it is characterized in that: comprise welding gun, welding gun power supply, IGBT flow control module, described welding gun comprises welding torch casing, main road tungsten electrode, bypass tungsten electrode, welding torch casing is arranged main road tungsten electrode groove, bypass tungsten electrode groove, welding wire groove, welding wire slot is between main road tungsten electrode groove and bypass tungsten electrode groove, main road tungsten electrode groove, bypass tungsten electrode groove, the end of welding wire groove arranges main road tungsten electrode ignition tip respectively, bypass tungsten electrode ignition tip, wire feeding mouth, main road tungsten electrode groove, bypass tungsten electrode groove, in welding wire groove, main road tungsten electrode is installed respectively, bypass tungsten electrode and welding wire, and main road tungsten electrode, bypass tungsten electrode, the end of welding wire passes main road tungsten electrode ignition tip respectively, bypass tungsten electrode ignition tip, wire feeding mouth is to the outside of welding torch casing, the negative pole of the source of welding current connects main road tungsten electrode, the positive pole of the source of welding current separates two-way, the first via connects mother metal, second tunnel connects IGBT flow control module, IGBT flow control model calling bypass tungsten electrode.
2. the two tungsten electrode coupled arc weldering device of controlled shunting filled silk based on center according to claim 1, it is characterized in that: the first via between welding gun power supply and mother metal installs current sensor, current sensor by connection IGBT flow control module, the circuit between current sensor and IGBT flow control module is installed and is gathered current sensor signal and control IGBT flow control module thus control the control system that between main road tungsten electrode and bypass tungsten electrode, electric current distributes.
3. the two tungsten electrode coupled arc weldering device of controlled shunting filled silk based on center according to claim 1 and 2, is characterized in that: the angle between main road tungsten electrode and bypass tungsten electrode is 15 °-30 °; Level interval is 2mm-7mm, and main road tungsten electrode is 3mm-10mm relative to the overhang of main road tungsten electrode ignition tip, and bypass tungsten electrode is 3mm-10mm relative to the overhang of bypass tungsten electrode ignition tip, and welding wire is 5mm-15mm relative to the overhang of wire feeding mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420441994.6U CN204171519U (en) | 2014-08-07 | 2014-08-07 | Based on the two tungsten electrode coupled arc weldering device of controlled shunting that center fills silk |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420441994.6U CN204171519U (en) | 2014-08-07 | 2014-08-07 | Based on the two tungsten electrode coupled arc weldering device of controlled shunting that center fills silk |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148785A (en) * | 2014-08-07 | 2014-11-19 | 哈尔滨工程大学 | Controllable shunt double-tungsten electrode coupling electric arc welding gun device based on center filler wire and welding method thereof |
| CN104985303A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | InFocus-TOPTIG dual-arc hybrid welding method |
| CN106563870A (en) * | 2015-10-12 | 2017-04-19 | 魏利军 | Twin-tungsten-electrode electronic swing arc (ESA) argon arc welding |
| CN115106622A (en) * | 2022-07-08 | 2022-09-27 | 中国核工业华兴建设有限公司 | Double-tungsten-electrode hot wire TIG automatic welding construction method for stainless steel water tank of nuclear power station |
-
2014
- 2014-08-07 CN CN201420441994.6U patent/CN204171519U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148785A (en) * | 2014-08-07 | 2014-11-19 | 哈尔滨工程大学 | Controllable shunt double-tungsten electrode coupling electric arc welding gun device based on center filler wire and welding method thereof |
| CN104148785B (en) * | 2014-08-07 | 2016-07-06 | 哈尔滨工程大学 | The double; two tungsten electrode coupled arc weldering device of controlled shunting filled silk based on center and welding method |
| CN104985303A (en) * | 2015-07-27 | 2015-10-21 | 哈尔滨工业大学 | InFocus-TOPTIG dual-arc hybrid welding method |
| CN106563870A (en) * | 2015-10-12 | 2017-04-19 | 魏利军 | Twin-tungsten-electrode electronic swing arc (ESA) argon arc welding |
| CN115106622A (en) * | 2022-07-08 | 2022-09-27 | 中国核工业华兴建设有限公司 | Double-tungsten-electrode hot wire TIG automatic welding construction method for stainless steel water tank of nuclear power station |
| CN115106622B (en) * | 2022-07-08 | 2024-02-02 | 中国核工业华兴建设有限公司 | Nuclear power station stainless steel pool double tungsten electrode hot wire TIG automatic welding construction method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160706 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |