CN102873462A - Process for welding swing check valve and matching pipe - Google Patents
Process for welding swing check valve and matching pipe Download PDFInfo
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- CN102873462A CN102873462A CN201210386563XA CN201210386563A CN102873462A CN 102873462 A CN102873462 A CN 102873462A CN 201210386563X A CN201210386563X A CN 201210386563XA CN 201210386563 A CN201210386563 A CN 201210386563A CN 102873462 A CN102873462 A CN 102873462A
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Abstract
The invention discloses a process for welding a swing check valve and a matching pipe in the field of metal machining processes. The process comprises the following steps of: determining that a valve body is 25# high-quality carbon structural steel, the matching pipe is a WB36 alloy pipe, the type numbers of welding strips are A102 and J607RH, and the diameters of the welding strips are 5 mm; preheating a workpiece by adopting a heating band; baking the welding strips; performing spot-welding connection, backing welding and cover surface welding on the valve body and the matching piece, and then performing thermal treatment; and performing radiographic inspection on a welded part. The process has such advantages that the welding quality of the swing check valve and the matching pipe is effectively improved, the safety of pipeline running is improved, and the production operating cost is reduced.
Description
Technical field
The present invention relates to a kind of metal working process, more particularly, the present invention relates to the technique of a kind of swing type non-return valve and pipe arrangement welding.
Background technology
Valve is a kind of pipe control equipment that generally uses at industrial circle, in the practical application, valve must and the pipe arrangement combination.Valve and pipe arrangement are plugged into, and generally adopt flange form and welded type, here the connection modes of paper welded type.The kind of valve is a lot, and the material that certainly relates to is also a lot, and pipe arrangement also need adopt different materials to make according to the needs of practical application.The parts of two kinds of unlike materials are welded together, and weld seam can not there be the defectives such as crackle, seepage, have larger difficulty.With regard to employed No. 25 carbon constructional quality steels of swing type non-return valve valve body of the present invention and the employed Wb36 compo pipe of pipe arrangement, present prior art, the parts of these two kinds of unlike materials are welded, easily produce the above-mentioned quality problems of enumerating, this will affect normal, the safe operation of pipeline.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of swing type non-return valve of Effective Raise welding quality and the technique of pipe arrangement welding are provided.
The objective of the invention is to be achieved through the following technical solutions:
The technique of a kind of swing type non-return valve and pipe arrangement welding.Described technique for welding is implemented according to the following steps:
The first step: the material of confirming valve body is No. 25 carbon constructional quality steel;
Second step: the material of the pipe arrangement that affirmation and valve body are supporting is the WB36 compo pipe;
The 3rd step: select the welding rod of model A102 and J607RH, the diameter of welding rod is Φ 5mm;
The 4th step: adopt the pre-heated work pieces in heating tape, preheat temperature is at 160 ℃ ~ 180 ℃;
The 5th step: cure welding rod, baking conditions is 350 ℃ * 1h;
The 5th step: the setting welding current is 180 ~ 200A;
The 6th step: spot welding is connected with pipe arrangement with valve body;
The 7th step: with A102 welding rod bottoming welding;
The 8th step: with the cover welding of J607RH welding rod;
The 9th step: postwelding heating tape tempering heat treatment, temperature are 590 ℃ ± 15 ℃, insulation 1.5h;
The tenth step: the welding position is carried out radiographic inspection;
It is described that the welding position is carried out radiographic inspection is standard implementation according to GB3323 " radiography of steel weld seam and egative film grade separation method ".
Compared with prior art, the present invention has following beneficial effect:
1. the welding quality of Effective Raise swing type non-return valve and pipe arrangement ensures the safe operation of pipeline;
2. reduce the repair rate that produces because of quality problems, thereby reduced costs of production and operation.
Description of drawings
Accompanying drawing is the process schematic representation of swing type non-return valve and pipe arrangement welding.
Among the figure: valve body 1, pipe arrangement 2, welding 3.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment essentiality content of the present invention is described in further detail:
As shown in drawings: the technique of a kind of swing type non-return valve and pipe arrangement welding, technique for welding is implemented according to the following steps:
The first step: the material of confirming valve body 1 is No. 25 carbon constructional quality steel;
Second step: confirm that the material with the supporting pipe arrangement 2 of valve body 1 is the WB36 compo pipe;
The 3rd step: select the welding rod of model A102 and J607RH, the diameter of welding rod is Φ 5mm;
The 4th step: adopt the pre-heated work pieces in heating tape, preheat temperature is 160 ℃ ~ 180 ℃;
The 5th step: cure welding rod, baking conditions is 350 ℃ * 1h;
The 5th step: the setting welding current is 180 ~ 200A;
The 6th step: valve body 1 is connected spot welding 3 connects with pipe arrangement;
The 7th step: with A102 welding rod bottoming welding 3;
The 8th step: with J607RH welding rod cover welding 3;
The 9th step: postwelding heating tape tempering heat treatment, temperature are 590 ℃ ± 15 ℃, insulation 1.5h;
The tenth step: press GB3323 " radiography of steel weld seam and egative film grade separation method " to welding
Radiographic inspection is carried out at 3 positions.
Claims (2)
1. the technique of a swing type non-return valve and pipe arrangement welding is characterized in that: described weldering
Connecing processing technology implements according to the following steps:
The first step: the material of confirming valve body is No. 25 carbon constructional quality steel;
Second step: the material of the pipe arrangement that affirmation and valve body are supporting is the WB36 compo pipe;
The 3rd step: select the welding rod of model A102 and J607RH, the diameter of welding rod is Φ 5mm;
The 4th step: adopt the pre-heated work pieces in heating tape, preheat temperature is 160 ℃ ~ 180 ℃;
The 5th step: cure welding rod, baking conditions is 350 ℃ * 1h;
The 5th step: the setting welding current is 180 ~ 200A;
The 6th step: spot welding is connected with pipe arrangement with valve body;
The 7th step: with A102 welding rod bottoming welding;
The 8th step: with the cover welding of J607RH welding rod;
The 9th step: postwelding heating tape tempering heat treatment, temperature are 590 ℃ ± 15 ℃, insulation 1.5h;
The tenth step: the welding position is carried out radiographic inspection.
2. the technique of swing type non-return valve according to claim 1 and pipe arrangement welding is characterized in that: described the welding position is carried out radiographic inspection is standard implementation according to GB3323 " radiography of steel weld seam and egative film grade separation method ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210386563XA CN102873462A (en) | 2012-10-13 | 2012-10-13 | Process for welding swing check valve and matching pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210386563XA CN102873462A (en) | 2012-10-13 | 2012-10-13 | Process for welding swing check valve and matching pipe |
Publications (1)
| Publication Number | Publication Date |
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| CN102873462A true CN102873462A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210386563XA Pending CN102873462A (en) | 2012-10-13 | 2012-10-13 | Process for welding swing check valve and matching pipe |
Country Status (1)
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| CN (1) | CN102873462A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286468A (en) * | 2013-06-26 | 2013-09-11 | 南通国电电站阀门有限公司 | Dissimilar steel welding process of check door and tubing |
| CN103350287A (en) * | 2013-08-01 | 2013-10-16 | 南通国电电站阀门有限公司 | F92 valve body and F22 piping dissimilar steel butt-welding technology |
| CN103406680A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | Process for special-shaped steel butt welding of F22 valve body and P91 matching pipe |
| CN104002057A (en) * | 2014-06-06 | 2014-08-27 | 南通国电电站阀门有限公司 | Process for WB36 valve body sealing surface welding |
| CN104070271A (en) * | 2014-07-02 | 2014-10-01 | 南通国电电站阀门有限公司 | Dissimilar steel welding method of 15 Cr1Mo1V valve body and WB 36 piping |
| CN111545942A (en) * | 2020-05-20 | 2020-08-18 | 南通市力沛流体阀业有限公司 | Dissimilar steel welding method for C12A valve body and F22 piping |
| CN113210810A (en) * | 2021-05-14 | 2021-08-06 | 北京世源希达工程技术有限公司 | Secondary stainless steel pipe welding inert gas protection device and protection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214573A (en) * | 2008-01-03 | 2008-07-09 | 湖北省电力试验研究院 | Welding Process of Medium Temperature Thick Wall WB36/1Cr18Ni9Ti Dissimilar Steel |
| CN101269432A (en) * | 2008-05-20 | 2008-09-24 | 南通市电站阀门有限公司 | Dissimilar metal welding method for WCB steel valve and WB36 steel pipeline |
| CN101870031A (en) * | 2010-07-12 | 2010-10-27 | 中国化学工程第四建设公司 | Construction method for welding furnace tube and dissimilar steel |
| CN101983821A (en) * | 2010-10-25 | 2011-03-09 | 天津重钢机械装备股份有限公司 | Method for welding GS30CrMoV6 and Q345E dissimilar steels |
| CN102267000A (en) * | 2010-06-02 | 2011-12-07 | 哈尔滨建成集团有限公司 | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel |
-
2012
- 2012-10-13 CN CN201210386563XA patent/CN102873462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101214573A (en) * | 2008-01-03 | 2008-07-09 | 湖北省电力试验研究院 | Welding Process of Medium Temperature Thick Wall WB36/1Cr18Ni9Ti Dissimilar Steel |
| CN101269432A (en) * | 2008-05-20 | 2008-09-24 | 南通市电站阀门有限公司 | Dissimilar metal welding method for WCB steel valve and WB36 steel pipeline |
| CN102267000A (en) * | 2010-06-02 | 2011-12-07 | 哈尔滨建成集团有限公司 | Metal active gas (MAG) welding method for butting quenched low-alloy super-high-strength steel and high-quality carbon structural steel |
| CN101870031A (en) * | 2010-07-12 | 2010-10-27 | 中国化学工程第四建设公司 | Construction method for welding furnace tube and dissimilar steel |
| CN101983821A (en) * | 2010-10-25 | 2011-03-09 | 天津重钢机械装备股份有限公司 | Method for welding GS30CrMoV6 and Q345E dissimilar steels |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286468A (en) * | 2013-06-26 | 2013-09-11 | 南通国电电站阀门有限公司 | Dissimilar steel welding process of check door and tubing |
| CN103286468B (en) * | 2013-06-26 | 2016-01-20 | 南通国电电站阀门有限公司 | The technique of the welding of non-return door pipe arrangement dissimilar steel |
| CN103350287A (en) * | 2013-08-01 | 2013-10-16 | 南通国电电站阀门有限公司 | F92 valve body and F22 piping dissimilar steel butt-welding technology |
| CN103350287B (en) * | 2013-08-01 | 2016-06-01 | 南通国电电站阀门有限公司 | F92 valve body and F22 join the technique of pipe dissimilar steel jam welding |
| CN103406680A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | Process for special-shaped steel butt welding of F22 valve body and P91 matching pipe |
| CN104002057A (en) * | 2014-06-06 | 2014-08-27 | 南通国电电站阀门有限公司 | Process for WB36 valve body sealing surface welding |
| CN104070271A (en) * | 2014-07-02 | 2014-10-01 | 南通国电电站阀门有限公司 | Dissimilar steel welding method of 15 Cr1Mo1V valve body and WB 36 piping |
| CN104070271B (en) * | 2014-07-02 | 2016-03-09 | 南通国电电站阀门有限公司 | 15Cr1Mo1V valve body and WB36 pipe arrangement different steel weld method |
| CN111545942A (en) * | 2020-05-20 | 2020-08-18 | 南通市力沛流体阀业有限公司 | Dissimilar steel welding method for C12A valve body and F22 piping |
| CN113210810A (en) * | 2021-05-14 | 2021-08-06 | 北京世源希达工程技术有限公司 | Secondary stainless steel pipe welding inert gas protection device and protection method |
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Application publication date: 20130116 |