CN201394704Y - Argon-filling welding protective cover - Google Patents

Argon-filling welding protective cover Download PDF

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Publication number
CN201394704Y
CN201394704Y CN2009200332228U CN200920033222U CN201394704Y CN 201394704 Y CN201394704 Y CN 201394704Y CN 2009200332228 U CN2009200332228 U CN 2009200332228U CN 200920033222 U CN200920033222 U CN 200920033222U CN 201394704 Y CN201394704 Y CN 201394704Y
Authority
CN
China
Prior art keywords
argon
welding
filling
filled tube
protective cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009200332228U
Other languages
Chinese (zh)
Inventor
王孝云
王兰林
栗伟
李晓峰
薛洲
罗晓军
张俊玲
张勇
李瑞龙
刘小兵
金江
王锡恒
吴阳风
关小兵
金永宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Lanzhou Petrochemical Co
Original Assignee
Petrochina Lanzhou Petrochemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petrochina Lanzhou Petrochemical Co filed Critical Petrochina Lanzhou Petrochemical Co
Priority to CN2009200332228U priority Critical patent/CN201394704Y/en
Application granted granted Critical
Publication of CN201394704Y publication Critical patent/CN201394704Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides an argon-filling welding protective cover which comprises an argon-filling pipe with one end provided with an argon inlet; the center of the argon-filling pipe is provided with an annular groove; both two sides of the annular groove are provided with an argon outlet; two ends of the argon-filling pipe are respectively provided with a asbestos board. The argon-filling welding protective cover has good argon-filling protection effect, greatly increases the qualified rate of welding for high alloy thermal-resistant steel and stainless steel (the qualified rate of welding is not less than 95 percent), ensures good forming and good performance and good quality of weld joints, greatly lowers construction cost, improves working efficiency and ensures the safe operationof equipment and pipes.

Description

A kind of argon filling welding protection cover
Technical field
The utility model relates to a kind of welding protection cover; relate in particular to a kind of argon filling welding protection cover that is used for high-alloy stainless steel, heat resisting pipe, be mainly used in industries such as oil, chemical industry, metallurgy and protect the welding manufacturing of technology and non-ferrous metal tubular type equipment and pipeline with the argon gas inside of high-alloy stainless steel, heat resisting pipe welding.
Background technology
In the welding process of high-alloy stainless steel and heat resisting pipe, welding point is inside and outside must to adopt inert gas-shielded arc welding seam (the industry argon gas of using) more, produces defectives such as pore to prevent the welding point oxidation, and guarantees seam organization and performance.Existing argon-filled protection cover is owing to structure and sealing reason; argon gas can't be replaced the welding point ambient air fully; make high-alloy stainless steel; argon filling deficiency in the pipe during welding of heat resisting steel pipeline; cause the weld seam internal oxidation; toughness reduces and the fragility increase; the welding first-time qualification rate is low; the inner moulding of weld seam is bad; the weld seam internal flaw is many, must repeatedly reprocess, and has caused great amount of manpower; material resources and waste of time; construction cost is higher; because reprocessing repeatedly caused the performance damage of welding point, brought hidden danger for the safe operation of equipment and pipeline simultaneously.
Summary of the invention
The purpose of this utility model provides the argon filling welding protection cover of the good high-alloy stainless steel of a kind of argon-filled protection effect, heat resisting pipe.
Argon filling welding protection cover of the present utility model comprises argon-filled tube, is provided with the argon gas inlet at an end of argon-filled tube; Centre at argon-filled tube is provided with annular groove, is evenly equipped with argon gas export in the both sides of annular groove; The two ends of described argon-filled tube are provided with asbestos board.
In order to ensure protective cover argon shield effect, the external diameter of described asbestos board equals the internal diameter of to-be-welded pieces.
For the ease of operation, be provided with the argon-filled tube lifting piece at the argon gas arrival end of argon-filled tube, and be provided with hanger thereon.
The utility model compared with prior art has the following advantages:
1, argon-filled protection effect of the present utility model is good, has greatly improved heat-resistant high alloy steel and stainless welding first-time qualification rate (the weld seam first-time qualification rate is not less than 95%).
2, the inside moulding of weld seam is good, and has eliminated weld defects such as pore, oxidation effectively.
3, guarantee the performance and the quality of welding point, avoid that economical with materials reduces construction cost, and can significantly increase work efficiency, and guarantees the safe operation of equipment and pipeline to repeatedly the reprocessing of welding point.
4, process for machining and manufacturing is simple, and is easy to operate, and the scope of application is wide.
Description of drawings
Fig. 1 is the structure chart of the utility model welding protection cover
The specific embodiment
Argon filling welding protection cover of the present utility model comprises argon-filled tube 1, is provided with argon gas inlet 7 at an end of argon-filled tube 1; Be provided with annular groove 2 in the centre of argon-filled tube 1, the both sides of described annular groove 2 are evenly equipped with argon gas export 3; Be fixed with asbestos board 4 by screw bolt and nut respectively at the argon-filled tube two ends.
For the ease of operation, be outside equipped with argon-filled tube lifting piece 5 at argon-filled tube 7, and argon-filled tube lifting piece 5 is provided with hanger 6.
Welding protection cover size can be adjusted according to different bore sizes.
During welding, utilize its hanger 6 to put into weld bond protective cover earlier, make the annular groove 2 on the protective cover argon-filled tube 1 align weld seam; With two pipe fitting temporary sealing to be welded, begin argon filling with adhesive tape then; Begin welding (time can determine that argon filling is abundant in guaranteeing to manage according to the welded tube internal diameter) behind argon filling 2~5min, the side weld limit tears the temporary sealing adhesive tape off in the welding process; (weld seam residue 5~10mm) is turned argon pressure down, in order to avoid form indent because of argon pressure causes last welding portion greatly when backing run closes to an end; Continue argon filling after welding finishes got final product in 2~3 minutes.
Through test shows, when the asbestos board external diameter equaled to treat the weldment internal diameter, the protection effect was the best.

Claims (3)

1, a kind of argon filling welding protection cover is characterized in that: comprise argon-filled tube (1), be provided with argon gas inlet (7) at an end of argon-filled tube (1); Be provided with annular groove (2) in the centre of argon-filled tube (1), be evenly equipped with argon gas export (3) in the both sides of annular groove (2); The two ends of described argon-filled tube (1) are provided with asbestos board (4).
2, argon filling welding protection cover according to claim 1, it is characterized in that: the argon gas arrival end at argon-filled tube (1) is provided with argon-filled tube lifting piece (5), and is provided with hanger (6) thereon.
3, argon filling welding protection cover according to claim 1, it is characterized in that: the external diameter of described asbestos board (4) equals the internal diameter of to-be-welded pieces.
CN2009200332228U 2009-05-09 2009-05-09 Argon-filling welding protective cover Expired - Lifetime CN201394704Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200332228U CN201394704Y (en) 2009-05-09 2009-05-09 Argon-filling welding protective cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200332228U CN201394704Y (en) 2009-05-09 2009-05-09 Argon-filling welding protective cover

Publications (1)

Publication Number Publication Date
CN201394704Y true CN201394704Y (en) 2010-02-03

Family

ID=41617197

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200332228U Expired - Lifetime CN201394704Y (en) 2009-05-09 2009-05-09 Argon-filling welding protective cover

Country Status (1)

Country Link
CN (1) CN201394704Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947698A (en) * 2010-09-14 2011-01-19 江阴中南重工股份有限公司 Welding device for flanging of pipeline connecting piece
CN102756218A (en) * 2011-04-27 2012-10-31 五冶集团上海有限公司 Benzene hydrogenation engineering heat resistant steel pipeline welding method
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
CN103157927A (en) * 2011-12-19 2013-06-19 珠海格力电器股份有限公司 Welding tool
CN103386562A (en) * 2012-05-10 2013-11-13 五冶集团上海有限公司 Pipeline protection and protective gas saving dual-purpose device for pipeline hole opening and welding
CN103801803A (en) * 2014-02-13 2014-05-21 安徽金威管业有限公司 Inside weld inert gas protector
CN105935832A (en) * 2016-07-06 2016-09-14 兰州兰石重型装备股份有限公司 Titanium heat exchange tube welded argon shield device and using method thereof
CN106031960A (en) * 2015-03-13 2016-10-19 哈尔滨飞机工业集团有限责任公司 Inner surface gas protection device used when welding circular tube

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947698A (en) * 2010-09-14 2011-01-19 江阴中南重工股份有限公司 Welding device for flanging of pipeline connecting piece
CN101947698B (en) * 2010-09-14 2012-04-25 江阴中南重工股份有限公司 Welding device for flanging of pipeline connecting piece
CN102756218A (en) * 2011-04-27 2012-10-31 五冶集团上海有限公司 Benzene hydrogenation engineering heat resistant steel pipeline welding method
CN102756218B (en) * 2011-04-27 2016-01-27 五冶集团上海有限公司 Benzene hydrogenation engineering heat resisting steel method for welding pipeline
CN103157927A (en) * 2011-12-19 2013-06-19 珠海格力电器股份有限公司 Welding tool
CN103386562A (en) * 2012-05-10 2013-11-13 五冶集团上海有限公司 Pipeline protection and protective gas saving dual-purpose device for pipeline hole opening and welding
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
CN103801803A (en) * 2014-02-13 2014-05-21 安徽金威管业有限公司 Inside weld inert gas protector
CN106031960A (en) * 2015-03-13 2016-10-19 哈尔滨飞机工业集团有限责任公司 Inner surface gas protection device used when welding circular tube
CN105935832A (en) * 2016-07-06 2016-09-14 兰州兰石重型装备股份有限公司 Titanium heat exchange tube welded argon shield device and using method thereof

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Granted publication date: 20100203