CN107009002A - The accurate control automatic argon arc pipe welding method of stainless steel pipe - Google Patents

The accurate control automatic argon arc pipe welding method of stainless steel pipe Download PDF

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Publication number
CN107009002A
CN107009002A CN201710157731.0A CN201710157731A CN107009002A CN 107009002 A CN107009002 A CN 107009002A CN 201710157731 A CN201710157731 A CN 201710157731A CN 107009002 A CN107009002 A CN 107009002A
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Prior art keywords
stainless steel
steel pipe
weldment
argon arc
accurate control
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CN201710157731.0A
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Chinese (zh)
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CN107009002B (en
Inventor
刘泽敏
顾洪涛
曹明
孙亚非
谢屹
林忠
唐磊
刘生建
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Shanghai Institute of Space Propulsion
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Shanghai Institute of Space Propulsion
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • B23K9/167Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125Weld quality monitoring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/235Preliminary treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/04Tubular or hollow articles
    • B23K2101/06Tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/02Iron or ferrous alloys
    • B23K2103/04Steel or steel alloys

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Quality & Reliability (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention provides a kind of accurate control automatic argon arc pipe welding method of stainless steel pipe, comprise the following steps:From two stainless steel pipes as the first weldment and the second weldment, stainless steel pipe inwall and surface degreasing are carried out respectively;Conduit is dried;Place's end face to be welded, surfaces externally and internally are docked to the first to-be-welded pieces and the second weldment to carry out being mechanical grinding to visible metallochrome;Spot welding positioning is carried out to the weld seam of the first to-be-welded pieces and the second weldment;The fixture block frocks of Φ 3 are selected, weldment is clamped in pipe soldering turret;Handle tungsten electrode tip;Tungsten electrode and adjustment tungsten electrode tip height are installed;Welding process subangle sets curent change.The present invention solves the weldering of stainless steel pipe Φ 3*1mm automatic argon arc pipes, and welding point meets the I grade requirements of QJ2865 97, and conduit is penetrated and do not blocked up, and tested by weld properties, face of weld is recessed and X-ray examination and weld seam sealing propertytest.

Description

The accurate control automatic argon arc pipe welding method of stainless steel pipe
Technical field
Welded the present invention relates to Hall electric propulsion general assembly with the automatic argon arc pipe of stainless steel pipe, in particular it relates to a kind of accurate Control the automatic argon arc pipe welding methods of stainless steel pipe Φ 3*1mm.
Background technology
Accurate and stabilization the automatic argon arc pipe welding line fusion penetrations of control stainless steel pipe Φ 3*1mm are always welding field Difficult point and hot issue, should ensure that conduit weld seam is penetrated, and ensure that conduit is not blocked up again, and weldquality need to meet QJ2865- 97I grades of requirements.
According to conduit pressure-bearing operating mode, weld seam is subjected to the weld seam sealing inspection of " 2~5MPa helium is examined, and keeps 5min not reveal " Look into.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of accurate control automatic argon arc of stainless steel pipe Pipe welding method.
The present invention is realized by following scheme:
A kind of accurate control automatic argon arc pipe welding method of stainless steel pipe, comprises the following steps:
S1, from two stainless steel pipes as the first weldment and the second weldment, stainless steel pipe inwall is carried out respectively And surface degreasing;
S2, oil removing is terminated after stainless steel pipe drying;
S3, dock that place's end face to be welded, surfaces externally and internally be mechanical grinding to the first to-be-welded pieces and the second weldment can See metallochrome;
S4, the weld seam to the first to-be-welded pieces and the second weldment carry out spot welding positioning;
S5, the first to-be-welded pieces and the second weldment are fixed on after the fixture blocks of Φ 3 so that part axial bounce≤Φ to be welded 0.10mm;
S6, processing tungsten electrode tip;
S7, installation tungsten electrode and adjustment tungsten electrode tip height;
S8, welding process subangle set curent change.
Preferably, the step S4 is specially:In the case where positioning wedged block is spacing, by the first to-be-welded pieces and the second weldment Weld seam symmetrically 2 points of positioning, end face or axial direction unfitness of butt joint≤0.10mm, gap≤0.10mm.
Preferably, the corresponding welding conditions of the step S4 are:6~10A of electric current, 4~8L/min of argon flow amount.
Preferably, the step S6 is specially:Tungsten electrode diameter of phi is 1mm, and tip is 30 °, tungsten electrode scaling loss and change in shape It is required for polishing tungsten electrode tip to 30 ° with special equipment again, it is to avoid the change of shape causes arc shape to change, and influences electric arc Power and the heat input to mother metal.
Preferably, the step 7 is specially:Tungsten electrode tip is placed in directly over workpiece place to be welded, apart from workpiece place to be welded 2~3mm of surface.
Preferably, the step S8 is specially:Speed of welding:8r/min;Frequency:70Hz;Pulsewidth 33%;Electric current base value: 4A;Three sections of welding process point, corresponding angle is 200 °, 360 °, 160 ° respectively, and current peak is 23A, 21A, 20A respectively;Weldering In termination process, first stage peak point current act on when, stainless steel pipe formation molten bath, but and it is lack of penetration, belong to warm-up phase;The When two-stage peak point current is acted on, stainless steel pipe 1mm wall thickness is gradually penetrated;Phase III peak point current is acted on, weld seam ending Duan Nengliang gradually decays, and forms smooth, nonpitting appearance of weld.
Preferably, also comprise the following steps after the step S4:Quality examination is carried out to the solder joint of spot welding.
Preferably, also comprise the following steps:
Quality examination is carried out to weld seam, specifically, welding depression is no more than 0.1mm, does not allow undercut;Face of weld is not permitted Perhaps there is visual visible crackle, stomata, tungsten inclusion and non-metallic inclusion;Weld seam does not allow to deposit through X-ray examination inside weld seam In crackle, incomplete fusion and lack of penetration;Examined by 2~5MPa helium, the weld seam leak check for keeping 5min not reveal.
9th, the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, its feature exists In first to-be-welded pieces and the second to-be-welded pieces are stainless steel 1Cr18Ni9Ti Φ 3*1mm conduits.
Compared with prior art, the present invention has following beneficial effect:
1st, the present invention solves the automatic argon arc pipe weldering difficult points of small stainless steel pipe Φ 3*1mm, using double-round bond pattern, Thermal weld stress amount is gradually reduced, it is ensured that welding process weldering leakage is stable, and weldquality meets QJ2865-97I grades of requirements, and passes through Corresponding sealing examination;
2nd, present invention, avoiding the stainless steel that the defects such as lack of penetration, stomata, crackle, trailing end arc crater depression and crackle are produced The technological parameter of the automatic argon arc pipe welderings of conduit Φ 3*1mm, had both ensured that conduit was penetrated, while ensureing that weld seam is not blocked up, met Hall electricity Promote general assembly stainless steel pipe applying working condition demand;
3rd, spot-welding equipment and the fixture blocks of Φ 3 are used and clamping in the present invention, it is ensured that assembling shape before stainless steel pipe Φ 3*1mm welderings State, end face or axial direction unfitness of butt joint≤0.10mm, weld is accepted rate is improved in gap≤0.10mm.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, further feature of the invention, Objects and advantages will become more apparent upon:
Fig. 1 is the flow chart that the embodiment of the present invention accurately controls the automatic argon arc pipe welding method of stainless steel pipe.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection domain.
As shown in figure 1, the embodiments of the invention provide a kind of accurate automatic argon arc pipe weldering welding side of control stainless steel pipe Method, comprises the following steps:
S1, from two stainless steel 1Cr18Ni9Ti Φ 3*1mm conduits as the first weldment and the second weldment, enter respectively Row stainless steel pipe inwall and surface degreasing;
S2, oil removing is terminated after stainless steel pipe drying;
S3, dock that place's end face to be welded, surfaces externally and internally be mechanical grinding to the first to-be-welded pieces and the second weldment can See metallochrome;
S4, the weld seam to the first to-be-welded pieces and the second weldment carry out spot welding positioning, and corresponding welding condition is: 6~10A of electric current, 4~8L/min of argon flow amount;Specially:In the case where positioning wedged block is spacing, the first to-be-welded pieces and second are welded Symmetrically 2 points of the positioning of the weld seam of part, end face or axial direction unfitness of butt joint≤0.10mm, gap≤0.10mm, and the solder joint of spot welding is carried out Quality examination;S5, the first to-be-welded pieces and the second weldment are fixed on after the fixture blocks of Φ 3 so that part axial bounce to be welded≤ Φ0.10mm;
S6, processing tungsten electrode tip;Specially:Tungsten electrode diameter of phi is 1mm, and tip is 30 °, and tungsten electrode scaling loss and change in shape are all Need to polish tungsten electrode tip to 30 ° with special equipment again, it is to avoid the change of shape causes arc shape to change, and influences arc force And to the heat input of mother metal.
S7, installation tungsten electrode and adjustment tungsten electrode tip height;The step S7 is specially:Tungsten electrode tip is placed in workpiece to be welded Directly over place, apart from workpiece 2~3mm of place surface to be welded;
S8, welding process subangle set curent change;Specially:Speed of welding:8r/min;Frequency:70Hz;Pulsewidth 33%;Electric current base value:4A;Three sections of welding process point, corresponding angle is 200 °, 360 °, 160 ° respectively, and current peak is respectively 23A、21A、20A;In welding process, first stage peak point current act on when, stainless steel pipe formation molten bath, but and it is lack of penetration, Belong to warm-up phase;When second stage peak point current is acted on, stainless steel pipe 1mm wall thickness is gradually penetrated;Phase III peak value electricity Stream is acted on, and weld seam ending section energy is gradually decayed, and forms smooth, nonpitting appearance of weld.
Quality examination is carried out to weld seam, specifically, welding depression is no more than 0.1mm, does not allow undercut;Face of weld is not permitted Perhaps there is visual visible crackle, stomata, tungsten inclusion and non-metallic inclusion;Weld seam does not allow to deposit through X-ray examination inside weld seam In crackle, incomplete fusion and lack of penetration;Examined by 2~5MPa helium, the weld seam leak check for keeping 5min not reveal.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.

Claims (9)

1. a kind of accurate control automatic argon arc pipe welding method of stainless steel pipe, it is characterised in that comprise the following steps:
S1, from two stainless steel pipes as the first weldment and the second weldment, stainless steel pipe inwall and table are carried out respectively Face oil removing;
S2, oil removing is terminated after stainless steel pipe drying;
S3, place's end face to be welded, surfaces externally and internally are docked to the first to-be-welded pieces and the second weldment carry out being mechanical grinding to visible gold Belong to color;
S4, the weld seam to the first to-be-welded pieces and the second weldment carry out spot welding positioning;
S5, the first to-be-welded pieces and the second weldment are fixed on after the fixture blocks of Φ 3 so that part axial bounce≤Φ to be welded 0.10mm;
S6, processing tungsten electrode tip;
S7, installation tungsten electrode and adjustment tungsten electrode tip height;
S8, welding process subangle set curent change.
2. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that institute Stating step S4 is specially:In the case where positioning wedged block is spacing, by symmetrically 2 points of the positioning of the weld seam of the first to-be-welded pieces and the second weldment, End face or axial direction unfitness of butt joint≤0.10mm, gap≤0.10mm.
3. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that institute Stating the corresponding welding conditions of step S4 is:6~10A of electric current, 4~8L/min of argon flow amount.
4. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that institute Stating step S6 is specially:Tungsten electrode diameter of phi is 1mm, and tip is 30 °, and tungsten electrode scaling loss and change in shape are required for being set with special again Standby polishing tungsten electrode tip is to 30 °, it is to avoid the change of shape causes arc shape to change, and influences arc force and to the hot defeated of mother metal Enter.
5. the automatic argon arc pipe welding methods of accurate control stainless steel pipe Φ 3*1mm according to claim 1, its feature It is, the step 7 is specially:Tungsten electrode tip is placed in directly over workpiece place to be welded, apart from workpiece 2~3mm of place surface to be welded.
6. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that institute Stating step S8 is specially:Speed of welding:8r/min;Frequency:70Hz;Pulsewidth 33%;Electric current base value:4A;Three sections of welding process point, Corresponding angle is 200 °, 360 °, 160 ° respectively, and current peak is 23A, 21A, 20A respectively;In welding process, the first stage Peak point current act on when, stainless steel pipe formation molten bath, but and it is lack of penetration, belong to warm-up phase;Second stage peak point current is made Used time, stainless steel pipe 1mm wall thickness is gradually penetrated;Phase III peak point current is acted on, and weld seam ending section energy is gradually decayed, shape Into smooth, nonpitting appearance of weld.
7. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that Also comprise the following steps after the step S4:Quality examination is carried out to the solder joint of spot welding.
8. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that also Comprise the following steps:
Quality examination is carried out to weld seam, specifically, welding depression is no more than 0.1mm, does not allow undercut;Face of weld does not allow to deposit In visual visible crackle, stomata, tungsten inclusion and non-metallic inclusion;Weld seam does not allow to exist inside weld seam and split through X-ray examination Line, incomplete fusion and lack of penetration;Examined by 2~5MPa helium, the weld seam leak check for keeping 5min not reveal.
9. the accurate control automatic argon arc pipe welding method of stainless steel pipe according to claim 1, it is characterised in that institute It is stainless steel 1Cr18Ni9Ti Φ 3*1mm conduits to state the first to-be-welded pieces and the second to-be-welded pieces.
CN201710157731.0A 2017-03-16 2017-03-16 The accurate control automatic argon arc pipe welding method of stainless steel pipe Active CN107009002B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107234319A (en) * 2017-07-14 2017-10-10 玉环县金龙欧浴洁具有限公司 Thin plate corrugated stainless steel tubing pipe crimping welding procedure
CN108544117A (en) * 2018-07-04 2018-09-18 中国原子能科学研究院 A kind of welding method of superconducting cyclotron vacuum chamber
CN108941959A (en) * 2018-08-14 2018-12-07 上海空间推进研究所 A kind of method of accurate control Φ 3mm stainless steel pipe argonaut welding forming quality
CN109047998A (en) * 2018-08-14 2018-12-21 上海空间推进研究所 A kind of method of lifting system pipeline argonaut welding forming quality and production efficiency
CN110000452A (en) * 2019-05-06 2019-07-12 上海空间推进研究所 Propulsion system leads to argonaut welding tooling application method under class component protective atmosphere
CN110508909A (en) * 2019-08-07 2019-11-29 哈电集团(秦皇岛)重型装备有限公司 Stainless steel tube docks the welding system and method for automatic superimposed pulse single-run welding
CN108031950B (en) * 2017-11-02 2021-07-20 中国航发哈尔滨东安发动机有限公司 Circumferential welding method for thin-wall pipeline parts

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JPH0352775A (en) * 1989-07-20 1991-03-06 Sumitomo Metal Ind Ltd Circumferential welding method for stainless steel pipe
JP2003136242A (en) * 2001-11-02 2003-05-14 Babcock Hitachi Kk Tig arc welding apparatus
US20040200881A1 (en) * 2003-03-28 2004-10-14 John Gandy Method of manufacturing cold worked, high strength seamless CRA PIPE
CN102489842A (en) * 2011-12-07 2012-06-13 鞍山锅炉厂有限公司 Argon tungsten-arc welding process for pearlite heat-resistant steel pipe and austenitic heat-resistant steel pipe
CN102554418A (en) * 2012-02-16 2012-07-11 山东大学 Microbeam tungsten argon arc welding method for magnesium alloy thin-walled tube
CN104972213A (en) * 2015-05-25 2015-10-14 北京控制工程研究所 Installing and clamping tool and method for conducting capillary tube welding through installing and clamping tool
CN106312262A (en) * 2016-10-20 2017-01-11 西安华杰管道有限公司 TIG welding technique for butt welding of thin-walled stainless steel tubes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0352775A (en) * 1989-07-20 1991-03-06 Sumitomo Metal Ind Ltd Circumferential welding method for stainless steel pipe
JP2003136242A (en) * 2001-11-02 2003-05-14 Babcock Hitachi Kk Tig arc welding apparatus
US20040200881A1 (en) * 2003-03-28 2004-10-14 John Gandy Method of manufacturing cold worked, high strength seamless CRA PIPE
CN102489842A (en) * 2011-12-07 2012-06-13 鞍山锅炉厂有限公司 Argon tungsten-arc welding process for pearlite heat-resistant steel pipe and austenitic heat-resistant steel pipe
CN102554418A (en) * 2012-02-16 2012-07-11 山东大学 Microbeam tungsten argon arc welding method for magnesium alloy thin-walled tube
CN104972213A (en) * 2015-05-25 2015-10-14 北京控制工程研究所 Installing and clamping tool and method for conducting capillary tube welding through installing and clamping tool
CN106312262A (en) * 2016-10-20 2017-01-11 西安华杰管道有限公司 TIG welding technique for butt welding of thin-walled stainless steel tubes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107234319A (en) * 2017-07-14 2017-10-10 玉环县金龙欧浴洁具有限公司 Thin plate corrugated stainless steel tubing pipe crimping welding procedure
CN108031950B (en) * 2017-11-02 2021-07-20 中国航发哈尔滨东安发动机有限公司 Circumferential welding method for thin-wall pipeline parts
CN108544117A (en) * 2018-07-04 2018-09-18 中国原子能科学研究院 A kind of welding method of superconducting cyclotron vacuum chamber
CN108941959A (en) * 2018-08-14 2018-12-07 上海空间推进研究所 A kind of method of accurate control Φ 3mm stainless steel pipe argonaut welding forming quality
CN109047998A (en) * 2018-08-14 2018-12-21 上海空间推进研究所 A kind of method of lifting system pipeline argonaut welding forming quality and production efficiency
CN109047998B (en) * 2018-08-14 2020-09-04 上海空间推进研究所 Method for improving automatic argon arc welding forming quality and production efficiency of system pipeline
CN110000452A (en) * 2019-05-06 2019-07-12 上海空间推进研究所 Propulsion system leads to argonaut welding tooling application method under class component protective atmosphere
CN110508909A (en) * 2019-08-07 2019-11-29 哈电集团(秦皇岛)重型装备有限公司 Stainless steel tube docks the welding system and method for automatic superimposed pulse single-run welding
CN110508909B (en) * 2019-08-07 2021-07-09 哈电集团(秦皇岛)重型装备有限公司 Welding system and method for stainless steel pipe butt joint automatic superposition pulse single-pass welding

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