CN1995410A - Method for promoting anticorrosion of austenite stainless steel welding joint - Google Patents

Method for promoting anticorrosion of austenite stainless steel welding joint Download PDF

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Publication number
CN1995410A
CN1995410A CNA2006101662565A CN200610166256A CN1995410A CN 1995410 A CN1995410 A CN 1995410A CN A2006101662565 A CNA2006101662565 A CN A2006101662565A CN 200610166256 A CN200610166256 A CN 200610166256A CN 1995410 A CN1995410 A CN 1995410A
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China
Prior art keywords
remelting
stainless steel
welding
tungsten electrode
weld seam
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CNA2006101662565A
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Chinese (zh)
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CN100432246C (en
Inventor
罗辉
张元彬
项东
周峥
井光智
付强
刘超
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Wenzhou Tianlong Light Industry Equipment Co., Ltd.
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Shandong Jianzhu University
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Priority to CNB2006101662565A priority Critical patent/CN100432246C/en
Publication of CN1995410A publication Critical patent/CN1995410A/en
Application granted granted Critical
Publication of CN100432246C publication Critical patent/CN100432246C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses an improving method of austenite stainless steel welding corrosion resistant joint, which comprises the following steps: (1) adopting microbeam plasma arc welder with tungsten electrode diameter at 1. 1mm and end cone angle of tungsten electrode at 30 deg. c; (2) adjusting the argon flow of microbeam plasma arc welder at 5-8l/min; (3) cleaning splash, slag and oil pollution on two sides of welding seam; (4) adjusting the welding current at 12-18A and voltage at 20-28V; striking the arc between fusing area on one side of welding seam and mother material overheat area; moving along welding rim at uniform speed; setting the maximum diameter of fusing pond less than 5mm and refusing speed at 5-8cm/min; making the refusing breadth at 2-5mm; (5) adopting the same technical parameter with step (4) to fuse the other side of welding seam; (6) cooling the refusing pond naturally.

Description

A kind of raising anticorrosion of austenite stainless steel welding joint method
Technical field:
What the present invention relates to is the method that improves the austenitic stainless steel surface property, especially a kind of raising anticorrosion of austenite stainless steel welding joint method.
Background technology:
In the prior art, technique known is to improve the remelting method of austenitic stainless steel surface corrosion resistance characteristic.Utilize remelting method to make the grain refining of Stainless Steel Watch covering weave, composition even, the formation that reduces and help protecting mould of grain-size.In the arc heat quantity set, remelted layer cooled off rapidly when electric arc left during remelting, and compole was short when remelted layer was in liquid and pyritous, and Elements Diffusion has been subjected to inhibition, and the passivation ability of remelted layer is improved greatly, thereby has improved its corrosion resistance.But this method is the processing at stainless steel surface, utilize the remelting technology, how to improve its erosion resistance for stainless steel welded joint, still do not find, because stainless steel welded joint is corroded than mother metal is easier, so the erosion resistance of stainless steel welded joint is most important, and does not find relevant technology so far, this is the existing in prior technology weak point.
Summary of the invention:
Purpose of the present invention is exactly at the existing in prior technology deficiency, and provide a kind of raising anticorrosion of austenite stainless steel welding joint method and technology scheme, this scheme adopts the remelting technology at the erosion resistance that improves stainless steel welded joint, propose to use the technology at micro-plasma welding equipment remelting weld seam both sides and weld-fusion line and place, mother metal overheated zone, reach the erosion resistance that improves welding joint, can make erosion resistance, than not having treated welding joint erosion resistance to improve tens of times through the welding joint of this art breading.
This programme is realized by following technical measures:
Improve the anticorrosion of austenite stainless steel welding joint method, the technical process of this method is:
(1) adopt micro-plasma welding equipment, selecting the tungsten electrode diameter is 1.1 millimeters, and tungsten electrode end cone angle is 30 degree;
(2) argon flow amount of adjustment micro-plasma welding equipment is a per minute 5-8 liter;
(3) the splashing of trimming both sides, slag and greasy dirt;
(4) welding current of adjustment micro-plasma welding equipment is that 12-18 peace, voltage are the 20-28 volt, then, between the fusion area of weld seam one side and mother metal overheated zone, begin striking, and it is at the uniform velocity mobile along weld edge, the maximum diameter in molten bath is less than 5 millimeters, remelt speed is per minute 5-8 centimetre, and the remelting width is the 2-5 millimeter;
(5) intact weld seam one side of remelting adopts the processing parameter identical with (4) to begin the opposite side of remelting weld seam again;
(6) last naturally cooling remelting molten bath.
The beneficial effect of this programme can be learnt according to the narration to such scheme, owing to adopt the remelting technology to improve the erosion resistance of stainless steel welded joint in this scheme, utilize the method for remelting can make the grain refining of Stainless Steel Watch covering weave, composition even, the formation that reduces and help protecting mould of grain-size.In the arc heat quantity set, remelted layer cooled off rapidly when electric arc left during remelting, and compole was short when remelted layer was in liquid and pyritous, and Elements Diffusion has been subjected to inhibition, and the passivation ability of remelted layer is improved greatly, thereby has improved its corrosion resistance.The remelting technology is improved the stainless steel corrosion-resisting function, use the protection against corrosion technology of stainless steel welded joint, be to use the technology of micro-plasma welding equipment remelting weld seam and welded bonds place, weld seam both sides mother metal, reach the erosion resistance that improves welding joint, can make erosion resistance, than not having treated welding joint erosion resistance to improve tens of times through the welding joint of this art breading.This shows that the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, the beneficial effect of its enforcement also is conspicuous.
Embodiment:
For clearly demonstrating the technical characterstic of this programme,, this programme is set forth below by two embodiments.
First embodiment:
Improve the anticorrosion of austenite stainless steel welding joint method, the technical process of this method is:
(1) adopt the LHM8-16 micro-plasma welding equipment, selecting the tungsten electrode diameter is 1.1 millimeters, and tungsten electrode end cone angle is 30 degree;
(2) argon flow amount of adjustment micro-plasma welding equipment is 6 liters of per minutes;
(3) the splashing of trimming both sides, slag and greasy dirt;
(4) welding current of adjustment micro-plasma welding equipment is that 14 peaces, voltage are 22 volts, then, between the fusion area of weld seam one side and mother metal overheated zone, begin striking, and it is at the uniform velocity mobile along weld edge, the maximum diameter in molten bath is less than 3 millimeters, remelt speed is 6 centimetres of per minutes, and the remelting width is 3 millimeters;
(5) intact weld seam one side of remelting adopts the processing parameter identical with (4) to begin the opposite side of remelting weld seam again;
(6) last naturally cooling remelting molten bath.
Second embodiment:
Improve the anticorrosion of austenite stainless steel welding joint method, the technical process of this method is:
(1) adopt the LHM8-16 micro-plasma welding equipment, selecting the tungsten electrode diameter is 1.1 millimeters, and tungsten electrode end cone angle is 30 degree;
(2) argon flow amount of adjustment micro-plasma welding equipment is 8 liters of per minutes;
(3) the splashing of trimming both sides, slag and greasy dirt;
(4) welding current of adjustment micro-plasma welding equipment is that 18 peaces, voltage are 28 volts, then, between the fusion area of weld seam one side and mother metal overheated zone, begin striking, and it is at the uniform velocity mobile along weld edge, the maximum diameter in molten bath is less than 5 millimeters, remelt speed is 8 centimetres of per minutes, and the remelting width is 5 millimeters;
(5) intact weld seam one side of remelting adopts the processing parameter identical with (4) to begin the opposite side of remelting weld seam again;
(6) last naturally cooling remelting molten bath.

Claims (1)

1. one kind is improved the anticorrosion of austenite stainless steel welding joint method, and it is characterized in that: the technical process of this method is:
(1) adopt micro-plasma welding equipment, selecting the tungsten electrode diameter is 1.1 millimeters, and tungsten electrode end cone angle is 30 degree;
(2) argon flow amount of adjustment micro-plasma welding equipment is a per minute 5-8 liter;
(3) the splashing of trimming both sides, slag and greasy dirt;
(4) welding current of adjustment micro-plasma welding equipment is that 12-18 peace, voltage are the 20-28 volt, then, between the fusion area of weld seam one side and mother metal overheated zone, begin striking, and it is at the uniform velocity mobile along weld edge, the maximum diameter in molten bath is smaller or equal to 5 millimeters, remelt speed is per minute 5-8 centimetre, and the remelting width is the 2-5 millimeter;
(5) intact weld seam one side of remelting adopts the processing parameter identical with (4) to begin the opposite side of remelting weld seam again;
(6) last naturally cooling remelting molten bath.
CNB2006101662565A 2006-12-28 2006-12-28 Method for promoting anticorrosion of austenite stainless steel welding joint Expired - Fee Related CN100432246C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006101662565A CN100432246C (en) 2006-12-28 2006-12-28 Method for promoting anticorrosion of austenite stainless steel welding joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006101662565A CN100432246C (en) 2006-12-28 2006-12-28 Method for promoting anticorrosion of austenite stainless steel welding joint

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CN1995410A true CN1995410A (en) 2007-07-11
CN100432246C CN100432246C (en) 2008-11-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102554418A (en) * 2012-02-16 2012-07-11 山东大学 Microbeam tungsten argon arc welding method for magnesium alloy thin-walled tube
CN105458507A (en) * 2015-12-23 2016-04-06 中国石油天然气股份有限公司 Strengthening method of pipeline loop welding head
CN109514058A (en) * 2018-11-23 2019-03-26 东方电气集团东方汽轮机有限公司 A kind of anti-water erosion processing method of last stage vane of steam turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101774070B (en) * 2009-12-30 2011-07-20 山东大学 Micro-plasma arc welding for heat-resistant casting alloy and austenitic stainless steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102554418A (en) * 2012-02-16 2012-07-11 山东大学 Microbeam tungsten argon arc welding method for magnesium alloy thin-walled tube
CN105458507A (en) * 2015-12-23 2016-04-06 中国石油天然气股份有限公司 Strengthening method of pipeline loop welding head
CN109514058A (en) * 2018-11-23 2019-03-26 东方电气集团东方汽轮机有限公司 A kind of anti-water erosion processing method of last stage vane of steam turbine
CN109514058B (en) * 2018-11-23 2020-12-29 东方电气集团东方汽轮机有限公司 Water erosion prevention treatment method for last-stage blade of steam turbine

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Owner name: WENZHOU CITY TIANLONG LIGHT INDUSTRY EQUIPMENT CO.

Free format text: FORMER OWNER: SHANDONG UNIVERSITY BUILDING

Effective date: 20090424

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20090424

Address after: Sand town Dalang Bridge Industrial Zone West Road Longwan District of Wenzhou City, Zhejiang Province, No. 20

Patentee after: Wenzhou Tianlong Light Industry Equipment Co., Ltd.

Address before: Fengming Road District of Ji'nan City, the port development in Shandong Province

Patentee before: Shandong Construction University

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for promoting anticorrosion of austenite stainless steel welding joint

Effective date of registration: 20120717

Granted publication date: 20081112

Pledgee: Bank of Wenzhou Limited by Share Ltd Ouhai branch

Pledgor: Wenzhou Tianlong Light Industry Equipment Co., Ltd.

Registration number: 2012990000382

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20081112

Termination date: 20131228