CN1546267A - Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor - Google Patents
Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor Download PDFInfo
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- CN1546267A CN1546267A CNA200310118960XA CN200310118960A CN1546267A CN 1546267 A CN1546267 A CN 1546267A CN A200310118960X A CNA200310118960X A CN A200310118960XA CN 200310118960 A CN200310118960 A CN 200310118960A CN 1546267 A CN1546267 A CN 1546267A
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- 238000003466 welding Methods 0.000 title claims abstract description 112
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 21
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims description 9
- 230000007704 transition Effects 0.000 claims abstract description 39
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 36
- 239000010935 stainless steel Substances 0.000 claims abstract description 36
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 8
- 239000010962 carbon steel Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000010891 electric arc Methods 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 235000013372 meat Nutrition 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001566 austenite Inorganic materials 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding method for low carbon steel-austenite stainless steel compound pipe of ultra-thin stainless composite bed. The character is: the welding is completed with transition layer welding seam and base layer welding, it hasn't single stainless steel composite bed seam; the welding rod for low carbon steel base layer seam is the same to the one for mother metal; the first welding for stainless steel composite layer and the transition layer between the stainless composite layer and the low carbon steel base layer use argon tungsten-arc welding with back argon filling protection, or uses manual arc welding; the welding wire or welding rod use stainless steel in order to form the transition welding seam; after the transition welding seam is completed, the second time uses manual arc welding to weld the low carbon steel base layer, the welding rod uses low carbon steel in order to form base layer welding seam.
Description
Technical field
The present invention relates to the welding method of stainless steel, mild steel composite, particularly relate to the welding method of the mild steel-austenite stainless steel pipe of the compound layer of a kind of ultra-thin-wall stainless steel.
Background technology
Do not find similar stainless steel carbon steel composite pipe welding method as yet through patent retrieval, in the at present general stainless steel carbon steel multiple tube, the thickness of the compound layer of stainless steel is generally more than 2mm, and the compound layer thickness of stainless steel involved in the present invention is less than 1mm, and such multiple tube is used increasingly extensive, but does not retrieve corresponding welding method as yet.Because the mild steel of ultra-thin-wall composite bed-austenite stainless steel pipe has certain degree of difficulty in welding, mainly be when welding the 1st layer, how to guarantee itself and the identical corrosion resistance of 18-8 type stainless steel, how to guarantee single face welding and double face shaping that in welding process, does not produce metallurgical imperfection and defective workmanship and how to guarantee weld seam etc.General composite pipe welding method is welding point to be divided into composite bed weld seam, transition zone weld seam and basic unit's weld seam weld respectively at present, the welding material of composite bed weld seam and transition zone weld seam is the stainless steel of heterogeneity, need frequently to change welding rod in the production, mistaken easily, the welding procedure complexity.
Summary of the invention
Defective or deficiency at above-mentioned existing process, the objective of the invention is: a kind of ultra-thin composite bed mild steel-austenitic stainless steel multiunit tube joint welding method is provided, method of the present invention can improve product percent of pass, reduce repair rate, thereby enhance productivity, reduce used welding material kind, increase economic benefit.
The technical scheme that realizes the foregoing invention purpose is: ultra-thin composite bed mild steel-austenitic stainless steel multiunit tube joint welding method is characterized in that weld seam is divided into the transition zone weld seam and basic unit's weld seam is welded for twice, the compound layer of no independent stainless steel weld seam; The welding rod of mild steel basic unit weld seam adopts the mild steel arc welding electrode with the mother metal homogeneity; May further comprise the steps:
1) transition zone between compound layer of soldering stainless steel composite bed and stainless steel and the mild steel basic unit adopts the argon tungsten-arc welding of back argon-filled protection for the first time, or adopts manual electric arc welding; Welding wire or welding rod are selected stainless steel for use and are formed the transition zone weld seam;
The chemistry that forms the welding rod of transition zone weld seam and welding wire become (percentage by weight, %):
| C | Si | ?Mn | S | P | ?Cr | ?Ni | ?Mo | ?Cu |
| 0.025～ 0.04 | 0.30～ 0.78 | ?0.50～ ?1.80 | 0.025～ 0.035 | 0.011～ 0.032 | ?22.00～ ?25.00 | ?12.00～ ?14.00 | ?0.01～ ?0.40 | ?0.02～ ?0.20 |
2) after the transition zone weld seam forms, adopt manual electric arc welding welding low-carbon base steel layer for the second time, welding rod is selected low-carbon steel material for use and is formed basic unit's weld seam.
The unique distinction of welding method provided by the invention is to adopt the disposable compound layer of stainless steel and mild steel basic unit are welded together of stainless steel welding stick or welding rod and forms the transition zone weld seam, form welding point with mild steel arc welding electrode welding low-carbon base steel layer then, and divide three layers of welding unlike conventional method.
It is Ultra-low carbon that the present invention becomes the unique distinction on the component selections at the transition zone welding material.Owing to the Ultra-low carbon of welding wire and welding rod makes the phosphorus content of transition zone weld seam very low and guarantee content and the Cr/Ni ratio of Cr, Ni, thereby make the electrode potential of transition zone weld metal and the stainless electrode potential of 18-8 be in same level, prevented the generation of the intercrystalline corrosion of weld seam, and made the compound layer of transition zone weld seam and stainless steel have identical micro-metallographic structure.And because the Ultra-low carbon of transition zone weld seam can be used carbon steel in basic unit, and the martensite that the fusion area of transition zone and basic unit's weld seam is produced is low-carbon martensite, thereby guarantees properties of its welded joints and reduce production costs.The content that suitably improves S simultaneously helps one side welding with back formation, because thin-wall construction can not produce fire check.
Description of drawings
Fig. 1 is a stainless steel composite pipe joint welding schematic diagram;
Fig. 2 is a stainless steel composite pipe pipe joint schematic diagram.
Symbol in the above-mentioned accompanying drawing is represented respectively: among Fig. 1, and the 1-carbon steel base layer; The compound layer of 2-stainless steel; 3-transition zone weld seam; 4-basic unit weld seam.
Among Fig. 2, the 1-carbon steel base layer; The compound layer of 2-stainless steel; 4-basic unit weld seam.
The specific embodiment
It is following that embodiments of the present invention is further illustrated with reference to accompanying drawing:
Referring to Fig. 1,2, be example with 20 steel and 0Cr18Ni9 austenite stainless steel pipe, in the drawings, carbon steel base layer 1 is 20 steel, wall thickness 3mm; The compound layer 2 of stainless steel is the 0Cr18Ni9 austenitic stainless steel, wall thickness 0.5mm; 70 ° of bevel angles; Gap 2mm; When transition zone weld seam 3 adopted GTAW, gage of wire was Φ 2.0mm, and when adopting manual electric arc welding transition zone weld seam 3, core diameter is Φ 2.5mm.
Adopt argon arc welding weldering transition zone weld seam 3; the method of arc welding weldering basic unit weld seam 4; Ultra-low carbon 25-13 type austenitic stainless steel welding wire is adopted in argon arc welding; arc welding weldering basic unit weld seam 4 adopts and the corresponding welding rod of base material; applying argon gas protection in pipeline during argon arc welding welding transition layer, thus make the transition zone weld seam 3 can single face welding and double face shaping.
Adopt the method for arc welding weldering transition zone and basic unit, transition zone weld seam 3 adopts Ultra-low carbon 25-13 type austenite stainless steel-made welding rod, and basic unit's weld seam 4 adopts and the corresponding welding rod of base material.
At first groove is carried out machining, the flatness of pipeline end face is no more than 0.5mm, the groove face that processes can not have impurity such as crackle, layering step, greasy dirt, and makes it reach smooth with the burr at sanding machine removing mouth of pipe outer edge place, and unfitness of butt joint is no more than 0.5mm during the pipeline counterpart.The mouth of pipe is to getting well the back along the evenly spot welding three-point fix of welded tube week, spot welding length 20mm-30mm, welding material is corresponding transition zone welding rod or welding wire, welding current I is 58A～67A when adopting welding rod, voltage U is 25V～30V, welding current I is 60A～75A when adopting welding wire, and voltage U is 10V～14V.Spot welding place through to spot welding inspection, the qualified laggard line pipe mouth full weld of processing, is adopted the method for short arc continuous welding if reweld after having pore, crackle must remove totally, and the weldering meat thickness of transition zone weld seam 3 is about about 1/3 of carbon steel base layer thickness.After welding finishes, the slag on trimming surface also checks that face of weld has defectives such as flawless, after the inspection processing is qualified, carries out the welding of 20 base steel layer weld seam 4,20 base steel layer welding rod select Φ 2.5mm or Φ 3.2mm for use with the corresponding welding rod of base material, finally form basic unit's weld seam 4.
Forming the welding rod of transition zone weld seam and the chemical analysis of welding wire is:
| ?C | ?Si | ?Mn | ?S | ?P | ?Cr | ?Ni | ?Mo | ?Cu |
| ?0.025～ ?0.04 | ?0.30～ ?0.78 | ?0.50～ ?1.80 | ?0.025～ ?0.035 | ?0.011～ ?0.032 | ?22.00～ ?25.00 | ?12.00～ ?14.00 | ?0.01～ ?0.40 | ?0.02～ ?0.20 |
The present invention has obtained success in practical engineering application, pore that conventional welding method occurs easily, slag inclusion, defective such as lack of penetration have been avoided, improved welding quality greatly, radiographic inspection qualification rate of welding is reached more than 98%, and the transition zone weld seam has been obtained and the consistent corrosion resistance of the compound layer of stainless steel, and production technology is easy, has dropped in the engineering construction of units concerned and has used and created remarkable economic efficiency.
Claims (3)
1. the welding method of ultra-thin composite bed mild steel-austenitic stainless steel multiunit tube joint is characterized in that, weld seam is divided into the transition zone weld seam and basic unit's weld seam is welded for twice, the compound layer of no independent stainless steel weld seam; The welding rod of mild steel basic unit weld seam adopts the mild steel arc welding electrode with the mother metal homogeneity; May further comprise the steps:
1) transition zone between compound layer of soldering stainless steel composite bed and stainless steel and the mild steel basic unit adopts the argon tungsten-arc welding of back argon-filled protection for the first time, or adopts manual electric arc welding; Welding wire or welding rod are selected stainless steel for use and are formed the transition zone weld seam;
Forming the welding rod of transition zone weld seam and the chemical analysis percentage by weight of welding wire is (%):
????C ??Si ??Mn ????S ????P ????Cr ????Ni ????Mo ????Cu
?0.025～ ?0.04 ?0.30～ ?0.78 ?0.50～ ?1.80 ?0.025～ ?0.035 ?0.011～ ?0.032 ?22.00～ ?25.00 ?12.00～ ?14.00 ?0.01～ ?0.40 ?0.02～ ?0.20
2) after the transition zone weld seam forms, adopt manual electric arc welding welding low-carbon base steel layer for the second time, welding rod is selected low-carbon steel material for use and is formed basic unit's weld seam.
2. the welding method of ultra-thin composite bed mild steel as claimed in claim 1-austenitic stainless steel multiunit tube joint; it is characterized in that; when welding the transition zone that adopts between argon arc welding soldering stainless steel composite bed and compound layer of stainless steel and the mild steel basic unit for the first time; applying argon gas protection in the pipeline makes the transition zone weld seam can single face welding and double face shaping.
3. the welding method of ultra-thin composite bed mild steel as claimed in claim 1-austenitic stainless steel multiunit tube joint, it is characterized in that, when welding the transition zone that adopts between compound layer of manual electric arc welding or argon tungsten-arc welding soldering stainless steel composite bed and stainless steel and the mild steel basic unit for the first time, the weldering meat thickness of transition zone weld seam comprises whole composite bed and arrives 1/3 of groundwork thickness; After having welded transition zone, the welding slag in trimming surface and the groove, splash, and check the face of weld quality, carry out the welding of carbon steel base layer weld seam after flawless, the convex-concave defective again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118960 CN1267234C (en) | 2003-12-08 | 2003-12-08 | Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118960 CN1267234C (en) | 2003-12-08 | 2003-12-08 | Welding method for ultra-thin composite layer low-carbon steel - austenitic stainless steel multiple tube adaptor |
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| Publication Number | Publication Date |
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| CN1546267A true CN1546267A (en) | 2004-11-17 |
| CN1267234C CN1267234C (en) | 2006-08-02 |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450688C (en) * | 2007-07-04 | 2009-01-14 | 中国石油天然气集团公司 | Thin-wall stainless steel double-layer and carbon steel base layer composite tube girth weld welding method |
| CN100450691C (en) * | 2006-11-09 | 2009-01-14 | 上海锅炉厂有限公司 | Narrow-gap all position pusle automatic argon arc welding technique for dissimillar nicklel-based alloys |
| CN101628355B (en) * | 2009-08-12 | 2011-01-26 | 西安向阳航天材料股份有限公司 | Sealing method for tube end of carbon steel/stainless steel composited tube |
| CN102267015A (en) * | 2011-07-28 | 2011-12-07 | 四川电力建设三公司 | Butt welding construction method of stainless steel clad pipes with diameter of not more than 600mm |
| CN101543928B (en) * | 2009-05-11 | 2012-04-18 | 辽河石油勘探局 | Compound pipeline welding process of L245NB+316L |
| CN102513713A (en) * | 2011-12-14 | 2012-06-27 | 张家港圣汇气体化工装备有限公司 | Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe |
| CN102615405A (en) * | 2012-04-12 | 2012-08-01 | 太原重工股份有限公司 | Welding method of stainless steel composite plates |
| CN102962563A (en) * | 2012-11-27 | 2013-03-13 | 浙江金洲管道工业有限公司 | Welding process for thin-walled composite steel pipe for pressure container |
| CN103447667A (en) * | 2013-09-06 | 2013-12-18 | 西安航空动力股份有限公司 | Method for preventing packing medium in two-layer casing pipe welding from being ablated |
| CN103521899A (en) * | 2013-10-09 | 2014-01-22 | 哈尔滨工业大学 | Welding method for manufacturing composite pipe through composite plate |
| CN103624376A (en) * | 2013-11-29 | 2014-03-12 | 西安向阳航天材料股份有限公司 | Method for butt welding end parts of two double-metal composite pipes respectively with adapter ring on the end part |
| CN103706928A (en) * | 2013-12-25 | 2014-04-09 | 江苏玉龙钢管股份有限公司 | Longitudinal submerged arc welding method of corrosion resistance metallurgical composite bimetal steel tube |
| CN103737187A (en) * | 2014-02-11 | 2014-04-23 | 芜湖鑫力管道技术有限公司 | Direct connection welding mounting process for stainless steel-lined composite pipes |
| CN103769864A (en) * | 2014-02-28 | 2014-05-07 | 芜湖鑫力管道技术有限公司 | Composite copper water tube straight connection welding process |
| CN104174976A (en) * | 2014-07-29 | 2014-12-03 | 云南昆钢新型复合材料开发有限公司 | One-time welding forming method for thin stainless steel composite materials |
| CN104607775A (en) * | 2015-01-21 | 2015-05-13 | 鲁西工业装备有限公司 | Automatic submerged arc welding method for nickel alloy composite board |
| CN106425291A (en) * | 2016-08-31 | 2017-02-22 | 浙江西子联合工程有限公司 | Demineralized water tank for high-temperature condensate water and manufacturing method thereof |
| CN107234360A (en) * | 2017-05-22 | 2017-10-10 | 茂名重力石化装备股份公司 | A kind of welding structure and its welding method for realizing the splicing of metal composite pipe equal strength |
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| CN108127226A (en) * | 2017-12-26 | 2018-06-08 | 重庆安特管业有限公司 | A kind of welding method of mild steel and stainless steel |
| CN108857122A (en) * | 2018-07-19 | 2018-11-23 | 湖南三泰新材料股份有限公司 | A kind of welding method of bimetallic composite reinforcing steel bar interface |
| CN109848525A (en) * | 2019-02-20 | 2019-06-07 | 武汉理工大学 | A kind of 3-5mm stainless steel plate single face welding and double face free forming welding method |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
-
2003
- 2003-12-08 CN CN 200310118960 patent/CN1267234C/en not_active Expired - Lifetime
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450691C (en) * | 2006-11-09 | 2009-01-14 | 上海锅炉厂有限公司 | Narrow-gap all position pusle automatic argon arc welding technique for dissimillar nicklel-based alloys |
| CN100450688C (en) * | 2007-07-04 | 2009-01-14 | 中国石油天然气集团公司 | Thin-wall stainless steel double-layer and carbon steel base layer composite tube girth weld welding method |
| CN101543928B (en) * | 2009-05-11 | 2012-04-18 | 辽河石油勘探局 | Compound pipeline welding process of L245NB+316L |
| CN101628355B (en) * | 2009-08-12 | 2011-01-26 | 西安向阳航天材料股份有限公司 | Sealing method for tube end of carbon steel/stainless steel composited tube |
| CN102267015A (en) * | 2011-07-28 | 2011-12-07 | 四川电力建设三公司 | Butt welding construction method of stainless steel clad pipes with diameter of not more than 600mm |
| CN102513713A (en) * | 2011-12-14 | 2012-06-27 | 张家港圣汇气体化工装备有限公司 | Welding method for stainless steel composite board pressure vessel shell and insert-type stainless steel connecting pipe |
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| CN102962563B (en) * | 2012-11-27 | 2015-03-25 | 浙江金洲管道工业有限公司 | Welding process for thin-walled composite steel pipe for pressure container |
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| CN103769864A (en) * | 2014-02-28 | 2014-05-07 | 芜湖鑫力管道技术有限公司 | Composite copper water tube straight connection welding process |
| CN104174976A (en) * | 2014-07-29 | 2014-12-03 | 云南昆钢新型复合材料开发有限公司 | One-time welding forming method for thin stainless steel composite materials |
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| CN104607775B (en) * | 2015-01-21 | 2016-07-06 | 鲁西工业装备有限公司 | A kind of Lincoln weld welding method of nickel alloy composite plate |
| CN106425291A (en) * | 2016-08-31 | 2017-02-22 | 浙江西子联合工程有限公司 | Demineralized water tank for high-temperature condensate water and manufacturing method thereof |
| CN107790865A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | A kind of assembly welding method of stainless steel clad plate |
| CN107234360A (en) * | 2017-05-22 | 2017-10-10 | 茂名重力石化装备股份公司 | A kind of welding structure and its welding method for realizing the splicing of metal composite pipe equal strength |
| CN107252977A (en) * | 2017-07-21 | 2017-10-17 | 上海交通大学 | A kind of single fillet welded methods of laser+MIG/MAG |
| CN107252977B (en) * | 2017-07-21 | 2019-03-12 | 上海交通大学 | A kind of single fillet welded method of laser+MIG/MAG |
| CN108127226A (en) * | 2017-12-26 | 2018-06-08 | 重庆安特管业有限公司 | A kind of welding method of mild steel and stainless steel |
| CN108857122A (en) * | 2018-07-19 | 2018-11-23 | 湖南三泰新材料股份有限公司 | A kind of welding method of bimetallic composite reinforcing steel bar interface |
| CN109848525A (en) * | 2019-02-20 | 2019-06-07 | 武汉理工大学 | A kind of 3-5mm stainless steel plate single face welding and double face free forming welding method |
| CN109848525B (en) * | 2019-02-20 | 2020-11-17 | 武汉理工大学 | Single-side welding and double-side free forming welding method for 3-5mm stainless steel plate |
| CN114985880A (en) * | 2022-06-14 | 2022-09-02 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel part and carbon steel part |
| CN114985880B (en) * | 2022-06-14 | 2024-04-19 | 沈阳鼓风机集团核电泵业有限公司 | Method for welding austenitic stainless steel piece and carbon steel piece |
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