CN203973032U - Gas shielded arc welding one side welding with back formation gas shield structure - Google Patents
Gas shielded arc welding one side welding with back formation gas shield structure Download PDFInfo
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- CN203973032U CN203973032U CN201420344564.2U CN201420344564U CN203973032U CN 203973032 U CN203973032 U CN 203973032U CN 201420344564 U CN201420344564 U CN 201420344564U CN 203973032 U CN203973032 U CN 203973032U
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Abstract
The utility model relates to gas shielded arc welding one side welding with back formation gas shield structure, comprise base, ignition tip, nozzle, additional nozzle, nozzle is connected with base, additional nozzle comprises and is provided with externally threaded connecting portion and is turbination bottom, on the perisporium of conical bottom, be evenly equipped with gas distribution hole, between additional nozzle and nozzle, be threaded, base central authorities establish welding wire through hole, welding wire bore periphery is established annular projection, annular projection is threaded with ignition tip by internal thread, the axial central authorities of ignition tip establish channel of welding wire, ignition tip end is established spacing preiection, sheathed heat conducting sleeve on ignition tip, between heat conducting sleeve and the first half of nozzle, be connected with heat conductive filament.The utility model is simple in structure, is easy to manufacture, and cost is low, different in the situation that, can, by adjusting additional nozzle, do to ignition tip the adjustment moving up and down simultaneously, welding wire length is adjusted, the groove welding that can realize different depth and width, greatly reduces operation cost.
Description
Technical field
The utility model relates to welding technology field, is specifically related to gas shielded arc welding one side welding with back formation gas shield structure.
Background technology
Metal argon arc welding adopts Ar or Ar+He as protection gas, is commonly referred to MIG weldering.If adopt a small amount of O of Ar family
2or CO
2gas when gas, although electric arc still has argon arc feature, has active gases as protection, is called MAG weldering.Metal argon arc welding adopts welding wire as electrode, and electric arc is to burn in straight argon or rich argon protection gas, and in welding process, welding wire constantly melts and is filled in molten bath and goes, and forms weld seam after condensation.In the process of welding, to ensure the stable of arc length and welding conditions.At present in welding is produced, metal argon arc welding has been widely used in the welding of thin plate and cut deal, be particularly suitable for welding of aluminum and alloy thereof, copper and alloy thereof and stainless steel and other metal materials, be that one of welding procedure is the most widely used in welding from now on, be also one of main direction of solder technology development from now on simultaneously.
Generally carrying out gas metal-arc welding while connecing, ignition tip is equipped with in welding gun termination, and nozzle can be equipped with in welding ignition tip outside, termination, to protect stability and the protection high-temperature soldering district of welding arc not oxidized.Fig. 1 is the welding process schematic diagram of the anti-one side welding with back formation of ceramic substrate MAG gas shield.While carrying out one side welding with back formation, the back side of weld seam is added with and sets off material is ceramic backing, control for the assembled gap of weld seam can suitably be relaxed, due to the existence of liner, make molten pool metal in the situation that workpiece burns, also be unlikely to run off, form enough fusion penetrations, ensured the penetration of the root of weld.The disposable penetration of the depressed root of weld of use of ceramic substrate.But the Welding Structure shown in employing Fig. 1 is welded mother metal, there are some defects:
1,, while welding dark and narrow groove inside, nozzle diameter is large, needs the welding wire length of ignition tip end to lengthen, and just can be deep in groove and weld; If it is long that welding wire stretches out nozzle, welding process can not get the protection of gas, just there will be pore; affect welding quality, in addition, welding wire stretches out the long meeting of nozzle and causes that welding arc is long; reduce electric arc penetration capacity, can not ensure one side welding with back formation, cause weld defect.
2, in welding process, due to high temperature action, ignition tip is understood back expansion after use certain time length, and it is large that channel of welding wire becomes, and ignition tip contacts unstable with welding wire, make welding current unstable, and spark splashes, and weldquality declines, and welder's operation easier is large.
3,, while welding, must protect workpiece not make moist, otherwise affect welding quality.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of gas shielded arc welding one side welding with back formation gas shield structure.
Realize the technical solution of the utility model as follows:
Gas shielded arc welding one side welding with back formation gas shield structure, comprise base, ignition tip, nozzle, additional nozzle, described additional nozzle divides two parts, top is for being provided with externally threaded connecting portion, bottom is turbination, on the perisporium of conical bottom, be evenly equipped with a circle gas distribution hole, the top of described nozzle is connected with base, the latter half of the inwall of nozzle is processed with internal thread, between additional nozzle and nozzle, be threaded, described base central authorities are provided with welding wire through hole, welding wire bore periphery is provided with annular projection, annular projection is threaded with the external screw thread of ignition tip upper end processing by the internal thread of processing, the axial central authorities of described ignition tip establish the channel of welding wire corresponding with welding wire through hole, the end of ignition tip is provided with spacing preiection, on ignition tip, be arranged with the good heat conducting sleeve of thermal conductivity, between heat conducting sleeve and the first half of nozzle, be connected with heat conductive filament, between described nozzle and ignition tip, form protection gas passage.
Further, described heat conducting sleeve adopts ceramic material.
Adopted above-mentioned scheme, the nozzle that diameter is large can weld wider groove; Additional nozzle can weld dark and narrow groove, between nozzle and additional nozzle, is threaded, and makes additional nozzle conveniently move up and down and change, and tap hole is set on additional nozzle, and part protects gas to overflow from gas distribution hole, can expand effective protection zone; Heat conducting sleeve has good thermal conductivity, and the heat that is arranged so that ignition tip of heat conducting sleeve can well be conducted; Between heat conducting sleeve and nozzle, heat conductive filament is set, can heated protective gas, guarantee to form protection gas dry in gas shield district, guarantee that weldment does not make moist.The utility model relates to simply, and cost is low, can be by mobile or replacing additional nozzle different in the situation that, ignition tip is done to the adjustment moving up and down simultaneously, welding wire length is adjusted, can be realized the groove welding of different depth and width, greatly reduce operation cost.
Brief description of the drawings
Fig. 1 is the welding process schematic diagram of the anti-one side welding with back formation of ceramic substrate MAG gas shield;
Fig. 2 is the utility model structural representation;
Fig. 3 adopts the utility model to carry out the welding process schematic diagram of one side welding with back formation;
In figure, 1 is welding wire, and 2 is arc-shaped convex, and 3 is heat conductive filament; 4 is nozzle, and 5 is ignition tip, and 6 is tap hole, and 7 is heat conducting sleeve; 8 is additional nozzle, and 8-1 is connecting portion, and 8-2 is conical bottom; 9 is spacing preiection, and 10 is base, and 11 is channel of welding wire; 12 is wire feed rolls, and 13 is protection gas, and 14 is workpiece; 15 is adhesive tape cloth, and 16 is ceramic substrate, and 17 is electric arc.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to Fig. 1, gas shielded arc welding one side welding with back formation gas shield structure, comprise base 10, ignition tip 5, nozzle 4, additional nozzle 8, described additional nozzle divides two parts, top is for being provided with externally threaded connecting portion 8-1, bottom is turbination, on the perisporium of conical bottom 8-2, be evenly equipped with a circle gas distribution hole 6, the top of described nozzle is connected with base, the latter half of the inwall of nozzle is processed with internal thread, between additional nozzle and nozzle, be threaded, described base central authorities are provided with welding wire through hole, welding wire bore periphery is provided with annular projection 2, annular projection is threaded with the external screw thread of ignition tip upper end processing by the internal thread of processing, the axial central authorities of described ignition tip establish the channel of welding wire corresponding with welding wire through hole 11, welding wire 1 is placed in channel of welding wire, the end of ignition tip is provided with spacing preiection 9, on ignition tip, be arranged with the good heat conducting sleeve 7 of thermal conductivity, between heat conducting sleeve and the first half of nozzle, be connected with heat conductive filament 3, between described nozzle and ignition tip, form protection gas passage.Described heat conducting sleeve adopts ceramic material, also can adopt the material that other thermal conductivity are good.
For the wider groove of welded piece, can select the nozzle that diameter is large to weld.
For the dark and narrow groove of welded piece, can adopt additional nozzle to weld, additional nozzle is connected with nozzle threads, and additional nozzle is done to suitable up-down adjustment, and additional nozzle can be welded dark and narrow groove; Tap hole is set on additional nozzle, and part protects gas to overflow from gas distribution hole, can expand effective protection zone, effectively protects welding pool, improves the stability of weldquality.While adopting additional nozzle to weld, ignition tip and welding wire will do corresponding adjustment; Welding wire needs to extend; in order to avoid welding wire to extend can not get protecting the protection of gas and welding wire to extend causing, electric arc is long causes occurring the defects such as pore, and correspondingly, ignition tip also will extend; because be threaded between ignition tip and annular projection, can do suitable up-down adjustment to ignition tip.
Physical dimension and the gage of wire of ignition tip match, the contact length of welding wire in ignition tip is about 20～30mm, thereby avoid because of welding wire and the direct loose contact of ignition tip and conductive contact point position is unstable likely causes welding wire and the large arc of ignition tip inwall part and adhesion, increase the unstable of wire-feeder resistance and wire feed.Meanwhile, ignition tip can play certain aligning and directed effect to welding wire.
Between ignition tip and annular projection, be threaded, in the time that ignition tip damages, can ignition tip followed and be changed.The sheathed heat conducting sleeve of ignition tip, because heat conducting sleeve has good thermal conductivity, high temperature on ignition tip can be absorbed, lower the temperature to ignition tip, avoid the ignition tip even scaling loss of burning, simultaneously, heat conducting sleeve is set on ignition tip can prevent that ignition tip is subject to high temperature action and causes welding wire through hole to become large to a certain extent, the unstability of avoiding ignition tip to contact with welding wire, ensure the electric conductivity between ignition tip and welding wire, ensure the stable of welding current, make in welding process spark splash little, improve welding quality.The spacing preiection of ignition tip end setting can carry out stop collar spacing, prevents that heat conducting sleeve from coming off from ignition tip.
Between heat conducting sleeve and nozzle, be provided with heat conductive filament, heat conductive filament has certain scalability, and in the time that ignition tip moves up and down, heat conductive filament does correspondingly flexible.The heat absorbing from ignition tip is passed to heat conductive filament by heat conducting sleeve, and heat conductive filament heats protection gas, guarantees to form protection gas dry in gas shield district, guarantees that welded piece does not make moist.
Adopt the utility model to carry out the welding process of one side welding with back formation: referring to Fig. 3, with adhesive tape cloth 15 by ceramic substrate 16 and workpiece 14 back sides laminatings closely, wire feed rolls 12 velocity-stabilizations ground and constantly carry welding wire.The protection gas 13 spraying from nozzle causes a thick and close gas shield layer to completely cut off air in weld zone; in the encirclement of protect gas reservoir stream; electric arc 17 covers whole welding wire end; and burn between welding wire and workpiece; the welded place of heat melts that utilizes electric arc to produce; and filler wire, thereby the workpiece of two separation is linked together, obtain firmly welding point.
The shaping of weld seam is relevant with the notch shape of liner, due to the various informative property of weld seam, requires different Type of Welding, selects suitable gasket shapes according to demand.Referring to figure below: ceramic substrate is selected for example.
To be natural inorganic material (kaolin, talcum etc.) be mixed into extrusion forming after ceramic powder by proper proportion to ceramic substrate, then under the high temperature of 1350-1400 DEG C, carry out sintering and the ceramic made.Due to sintering at high temperature, and there is good thermal conductivity, so anxious heat, chilling are had to good heat-resisting sex change, under the high temperature producing, also can maintain stable state in the time of welding, thereby can prevent metal burn-off, good conduction of heat plays the effect of preheating and after heat, and then can form overleaf good weld seam.The feature of pottery is acid and alkali resistance corrosion, and therefore in the time of welding, workpiece can not produce distortion or physical reaction.
The utility model is simple in structure, be easy to manufacture, cost is low, can be by mobile or replacing additional nozzle different in the situation that, ignition tip is done to the adjustment moving up and down simultaneously, welding wire length is adjusted, can be realized the groove welding of different depth and width, greatly reduce operation cost.
The utility model is not limited to described embodiment; those skilled in the art is not departing from spirit of the present utility model openly in scope; still can do some corrections or change, therefore the scope that rights protection scope of the present utility model limits with claims is as the criterion.
Claims (2)
1. gas shielded arc welding one side welding with back formation gas shield structure, comprise base, ignition tip, nozzle, the top of described nozzle is connected with base, it is characterized in that: be also provided with additional nozzle, described additional nozzle divides two parts, top is for being provided with externally threaded connecting portion, bottom is turbination, on the perisporium of conical bottom, be evenly equipped with a circle gas distribution hole, the latter half of the inwall of described nozzle is processed with internal thread, between additional nozzle and nozzle, be threaded, described base central authorities are provided with welding wire through hole, welding wire bore periphery is provided with annular projection, annular projection is threaded with the external screw thread of ignition tip upper end processing by the internal thread of processing, the axial central authorities of described ignition tip establish the channel of welding wire corresponding with welding wire through hole, the end of ignition tip is provided with spacing preiection, on ignition tip, be arranged with the good heat conducting sleeve of thermal conductivity, between heat conducting sleeve and the first half of nozzle, be connected with heat conductive filament, between described nozzle and ignition tip, form protection gas passage.
2. gas shielded arc welding one side welding with back formation gas shield structure according to claim 1, is characterized in that: described heat conducting sleeve adopts ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344564.2U CN203973032U (en) | 2014-06-25 | 2014-06-25 | Gas shielded arc welding one side welding with back formation gas shield structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344564.2U CN203973032U (en) | 2014-06-25 | 2014-06-25 | Gas shielded arc welding one side welding with back formation gas shield structure |
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| CN203973032U true CN203973032U (en) | 2014-12-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392276A (en) * | 2016-11-22 | 2017-02-15 | 江苏阿斯美特精工科技有限公司 | CoTIG welding gun capable of compressing electric arc and welding method |
| CN108817785A (en) * | 2017-01-03 | 2018-11-16 | 武汉电信器件有限公司 | A kind of soldering and sealing fixture |
| CN112191378A (en) * | 2020-09-28 | 2021-01-08 | 湖南九方焊接技术有限公司 | Double-layer gas circuit nozzle for narrow-gap gas shielded welding |
-
2014
- 2014-06-25 CN CN201420344564.2U patent/CN203973032U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392276A (en) * | 2016-11-22 | 2017-02-15 | 江苏阿斯美特精工科技有限公司 | CoTIG welding gun capable of compressing electric arc and welding method |
| CN106392276B (en) * | 2016-11-22 | 2019-04-30 | 江苏阿斯美特精工科技有限公司 | A kind of the CoTIG welding gun and welding method of compressible electric arc |
| CN108817785A (en) * | 2017-01-03 | 2018-11-16 | 武汉电信器件有限公司 | A kind of soldering and sealing fixture |
| CN112191378A (en) * | 2020-09-28 | 2021-01-08 | 湖南九方焊接技术有限公司 | Double-layer gas circuit nozzle for narrow-gap gas shielded welding |
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