CN202045444U - Weld joint protection device for tungsten electrode argon arc welding - Google Patents
Weld joint protection device for tungsten electrode argon arc welding Download PDFInfo
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- CN202045444U CN202045444U CN201120108562XU CN201120108562U CN202045444U CN 202045444 U CN202045444 U CN 202045444U CN 201120108562X U CN201120108562X U CN 201120108562XU CN 201120108562 U CN201120108562 U CN 201120108562U CN 202045444 U CN202045444 U CN 202045444U
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- weld seam
- protection device
- arc welding
- weld joint
- argon tungsten
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Abstract
The utility model discloses a weld joint protection device for tungsten electrode argon arc welding, which comprises two pressure plates arranged oppositely and two padding plates arranged oppositely, wherein a first spacing interval is reserved between the two pressure plates, the two pressure plates are used for constructing a first gas channel on the front surface of a weld joint, and the cross section of the first gas channel is in the shape of an upright trapezoid; and a second spacing interval is arranged between the two padding plates, the two padding plates are used for constructing a second gas channel on the back surface of the weld joint, and the cross section of the second gas channel is in the shape of an inverted trapezoid. The weld joint protection device can effectively isolate the contact between the high-temperature solidified weld joint and air and further can prevent the oxidation of the weld joint.
Description
Technical field
The utility model relates to a kind of welder, relates in particular to a kind of weld seam protection device that is used for welding process.
Background technology
Argon tungsten-arc welding is that the flat cold-rolled sheet of steel grades such as carbon steel, stainless steel and titanium alloy and alloy connects one of most widely used method.This kind welding method has following advantage: (1) almost can weld all metal or alloy; (2) welding quality is good; (3) be suitable for thin plate and bottoming/all position welding; (4) welding process does not have and splashes.Shortcomings such as but this welding method also has simultaneously, and welding efficiency is low, cost is high, the preceding cleaning of butt welding is strict, wind loading rating difference.
In order to enhance productivity, improve the quality of weld seam, adopt tungsten argon arc to weld automatically for 2mm such as stainless steel, titanium or titanium alloy usually with the welding of lower thin sheet.Argon gas in the tip can be good at isolated molten bath of high-temperature liquid state and contacting of air, anti-oxidation.But along with moving of welding gun, the weld seam that still is in high temperature will break away from the protection of inert gas argon, contact with air, and oxidation takes place.Series such as austenitic stainless steel 304,316, TA for example are if protect good weld seam will present the metallic luster of light; When blueness or black occurring, not only influence weld appearance, and can the serious corrosive nature that reduces weld seam.Equally, more should be noted that protection in the butt welded seam cooling procedure when the welding, otherwise will cause the generation of defective weld seam than the more active Titanium of stainless steel and alloy thereof.
In stainless steel, titanium or titanium alloy welding process, adopting inert gas that the high temperature molten bath is protected is present more common method.But under the automatic welding condition of tungsten argon arc, along with moving of welding gun or parts to be welded, the weld seam of high temperature is exposed in the air, still can form the oxide layer of blueness or black.The formation of this oxide layer not only greatly worsens the corrosion resistance and the relevant mechanical properties of weld seam, and influences the exterior appearance of weld seam.
Summary of the invention
The purpose of this utility model provides a kind of weld seam protection device of argon tungsten-arc welding; this weld seam protection device can completely cut off high temperature and solidify contacting of weld seam and air; thereby prevent the oxidation of weld seam; avoid turning blue or turning black of weld seam and heat affected area; thereby improve welding production efficiency greatly, reduce the production cost of product or parts simultaneously.This protective device especially should be applicable to and be more prone to cause argon tungsten arc process process oxidation, that steel grades such as cold-rolling stainless steel that decay resistance requires, titanium alloy sheet and alloy are arranged.
In order to realize the foregoing invention purpose, the utility model provides a kind of weld seam protection device of argon tungsten-arc welding, and it comprises:
Two pressing plates that relatively are provided with have one first spacing in the middle of the two, and described two pressing plates are built with one first gas passage in the front of weld seam, the cross section of described first gas passage be one just putting trapezoidal;
Two backing plates that relatively are provided with have one second spacing in the middle of the two, and described two backing plates are built with one second gas passage at the back side of weld seam, and the cross section of described second gas passage is one inverted trapezoidal.
Weld seam protection device described in the utility model forms gas passage by the front and back at weld seam; in gas passage, feed inert gases such as argon gas or helium then; be used for molten metal bath and high temperature weld seam are protected, it can prevent weld seam generation oxidation effectively.；
Preferably, the bevel angle of described pressing plate is 30～45 degree.
Preferably, the bevel angle of described backing plate is 0～15 degree.
In order to prevent that protective gas and air in the tip from forming turbulent flow, the groove that needs pressing plate and backing plate within the specific limits, the groove that angle is suitable can also reduce the consumption of protective gas simultaneously.
Preferably, the weld seam protection device of described argon tungsten-arc welding also comprises: a surface has the pipeline of some pores, and described pipeline is located in second gas passage.Adding a pipeline that is used to ventilate in second gas passage is in order to strengthen protecting effect, to reduce the consumption of protective gas.
Preferably, the big 5～10mm of diameter of the described first gap ratio argon tungsten-arc welding tip.
Preferably, the thickness of described pressing plate than argon tungsten-arc welding tip apart from the distance in weld seam front 3mm greatly at least.
The THICKNESS CONTROL of spacing between the pressing plate and pressing plate in above-mentioned scope, is excessive in order to prevent the protective gas in first gas passage, thereby influences the protection effect of butt welded seam.
The weld seam protection device of argon tungsten-arc welding described in the utility model makes it have the following advantages by adopting technique scheme:
1. use weld seam protection device described in the utility model, can high-quality finish the argon tungsten arc process technology of steel grades such as carbon steel, stainless steel, titanium or titanium alloy, obtain having the weld seam of metallic luster, the mother metal heat affected area can oxidation by air simultaneously;
2. use weld seam protection device described in the utility model, can accelerate the research and development progress of some cold rolling steel grades, estimate the solderability of steel grade and titanium alloy fast, avoid owing to protect bad cause weld seam and heat affected area oxidation, make Weld Performance descend, especially corrosive nature descends;
3. use weld seam protection device described in the utility model, need not carry out the after-treatment of postwelding face of weld, save time and production cost on the one hand, also avoided environmental pollution on the other hand because of using cleaning cream to cause;
4. weld seam protection device described in the utility model, it is simple in structure, and low cost of manufacture can be directly used in existing argon tungsten-arc welding and weld automatically, need not the recondition expense of great number.
Description of drawings
Come weld seam protection device described in the utility model is described further below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of weld seam protection device described in the utility model.
Fig. 2 is the side view of weld seam protection device shown in Figure 1.
The specific embodiment
As depicted in figs. 1 and 2; substrate 1 horizontal positioned; be used to be provided for the weld seam protection device of argon tungsten-arc welding and welded test plate (panel) 3; wherein be placed between pressing plate 6 and the backing plate 2 by weldering test plate (panel) 3; two pressing plate that is oppositely arranged 6 glands are being welded test plate (panel) 3 upper surfaces, and two backing plates that are oppositely arranged 2 are located at by weldering test plate (panel) 3 belows.The end of tip 4 is provided with tungsten electrode 5, is used for welding by the weldering test plate (panel), and the rear of tip 4 also is provided with drags cover 7.Two block pressur plates 6 have formed a cross section above quilt weldering test plate (panel) 3 be trapezoidal gas passage, is used to fill protective gas.Two backing plates have formed a cross section below quilt weldering test plate (panel) 3 be another trapezoidal gas passage, is used to fill protective gas.Wherein being positioned at by the gas passage cross section of weldering test plate (panel) 3 tops is just putting trapezoidal, and it is inverted trapezoidal being positioned at by the cross section of the gas passage of weldering test plate (panel) 3 belows.During welding, tip 4 is advanced along welding direction A, and inert protective gas G feeds in the gas passage from dragging cover 7, and molten metal bath and high temperature weld seam are protected.In order to prevent that protective gas and air in the tip from forming turbulent flow, reduce the consumption of inert protective gas simultaneously, preferably the bevel angle α with pressing plate 6 is controlled at 30～45 degree, and the bevel angle β with backing plate 2 is controlled at 0～15 degree simultaneously.In addition; in order to guarantee that pressing plate 6 and tip 4 prevent also when not bumping that inert protective gas is excessive in the gas passage; reduce the weld seam protection effect; preferably make spacing a between two block pressur plates 6 than the big 5～10mm of tip diameter r, make thickness of compressive plate h than tip apart from by the distance b on weldering test plate (panel) surface 3mm greatly at least.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. the weld seam protection device of an argon tungsten-arc welding is characterized in that, comprising:
Two pressing plates that relatively are provided with have one first spacing in the middle of the two, and described two pressing plates are built with one first gas passage in the front of weld seam, the cross section of described first gas passage be one just putting trapezoidal;
Two backing plates that relatively are provided with have one second spacing in the middle of the two, and described two backing plates are built with one second gas passage at the back side of weld seam, and the cross section of described second gas passage is one inverted trapezoidal.
2. the weld seam protection device of argon tungsten-arc welding as claimed in claim 1 is characterized in that, the bevel angle of described pressing plate is 30～45 degree.
3. the weld seam protection device of argon tungsten-arc welding as claimed in claim 2 is characterized in that, the bevel angle of described backing plate is 0～15 degree.
4. the weld seam protection device of argon tungsten-arc welding as claimed in claim 3 is characterized in that, comprises that also a surface has the pipeline of some pores, and described pipeline is located in second gas passage.
5. as the weld seam protection device of claim 3 or 4 described argon tungsten-arc weldings, it is characterized in that the big 5～10mm of diameter of the described first gap ratio argon tungsten-arc welding tip.
6. the weld seam protection device of argon tungsten-arc welding as claimed in claim 5 is characterized in that, the thickness of described pressing plate than argon tungsten-arc welding tip apart from the distance in weld seam front 3mm greatly at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120108562XU CN202045444U (en) | 2011-04-13 | 2011-04-13 | Weld joint protection device for tungsten electrode argon arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120108562XU CN202045444U (en) | 2011-04-13 | 2011-04-13 | Weld joint protection device for tungsten electrode argon arc welding |
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| CN202045444U true CN202045444U (en) | 2011-11-23 |
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| CN201120108562XU Expired - Fee Related CN202045444U (en) | 2011-04-13 | 2011-04-13 | Weld joint protection device for tungsten electrode argon arc welding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528347A (en) * | 2012-01-12 | 2012-07-04 | 天津大学 | Constraint radiating device for welding ferritic stainless steel plates and welding method |
| CN102601531A (en) * | 2012-03-20 | 2012-07-25 | 江苏中科四象激光科技有限公司 | Laser welding fixture with back protection function |
| CN102773593A (en) * | 2012-07-11 | 2012-11-14 | 苏州市世嘉科技股份有限公司 | Double side protection welding process for mirror stainless steel plate |
| CN103341682A (en) * | 2013-07-17 | 2013-10-09 | 南通职业大学 | Welding process for SAF2205 duplex stainless steel and WELDOX 700 low alloy high-strength steel |
| CN106112230A (en) * | 2016-06-29 | 2016-11-16 | 北京动力机械研究所 | A kind of titanium alloy material weld seam front gas shield device |
| CN106735973A (en) * | 2016-12-07 | 2017-05-31 | 武汉冶钢结构有限责任公司 | Welding piece anti-deformation device |
-
2011
- 2011-04-13 CN CN201120108562XU patent/CN202045444U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528347A (en) * | 2012-01-12 | 2012-07-04 | 天津大学 | Constraint radiating device for welding ferritic stainless steel plates and welding method |
| CN102601531A (en) * | 2012-03-20 | 2012-07-25 | 江苏中科四象激光科技有限公司 | Laser welding fixture with back protection function |
| CN102773593A (en) * | 2012-07-11 | 2012-11-14 | 苏州市世嘉科技股份有限公司 | Double side protection welding process for mirror stainless steel plate |
| CN103341682A (en) * | 2013-07-17 | 2013-10-09 | 南通职业大学 | Welding process for SAF2205 duplex stainless steel and WELDOX 700 low alloy high-strength steel |
| CN103341682B (en) * | 2013-07-17 | 2016-03-16 | 南通职业大学 | The welding procedure of SAF2205 two phase stainless steel and WELDOX700 low-alloy high-strength steel |
| CN106112230A (en) * | 2016-06-29 | 2016-11-16 | 北京动力机械研究所 | A kind of titanium alloy material weld seam front gas shield device |
| CN106735973A (en) * | 2016-12-07 | 2017-05-31 | 武汉冶钢结构有限责任公司 | Welding piece anti-deformation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20200413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |