CN102357720A - Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel - Google Patents
Welding method of dissimilar steels such as 917 low-magnetic steel and CCSB steel Download PDFInfo
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- CN102357720A CN102357720A CN2011102907467A CN201110290746A CN102357720A CN 102357720 A CN102357720 A CN 102357720A CN 2011102907467 A CN2011102907467 A CN 2011102907467A CN 201110290746 A CN201110290746 A CN 201110290746A CN 102357720 A CN102357720 A CN 102357720A
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Abstract
The invention discloses a welding method of dissimilar steel such as 917 low-magnetic steel and CCSB steel, belonging to the welding field of material processing engineering. The welding method is used for manufacturing the welding structures of low magnetic conductivity used for ship manufacture, parts of special vehicles, military equipment and the like. In the invention, a stainless steel solid welding wire ER309L ([Phi]=1.0 mm) suitable for the welding of dissimilar steel, welding equipment and a walking device are adopted; binary mixed gas (Ar+1.5%CO2) is used for protection; flat butt welding, horizontal butt welding and upward butt welding of dissimilar steel such as 917 low-magnetic steel and CCSB steel are performed according to corresponding welding parameters; and full-automatic vertical butt welding is performed by using a full-position automatic welding trolley. Through the welding method disclosed by the invention, the problems of difficult operation, low production efficiency, low welding seam quality, great structural deformation and the like caused by magnetic blow in the traditional shielded metal arc welding method are effectively solved; and the welding method is convenient to operate, has high production efficiency, and realizes the forming of uniform and beautiful welding seams, small welding deformation; moreover, welding joints have good mechanical performances.
Description
One, technical field
The present invention relates to the welding method of a kind of 917 low magnetic steels+CCSB steel dissimilar steel; Particularly a kind of welding method of making protection welding 917 low magnetic steels+CCSB steel dissimilar steel with the consumable electrode mist; The welding field that belongs to Materials Processing Engineering is mainly used in the Welding Structure production that shipbuilding, special vehicle parts, military hardware etc. require low magnetic permeability.
Two, background technology
For the welding of 917 low magnetic steels+CCSB steel dissimilar steel, all adopted the CW395 welding rod to carry out SMAW in the past, there are problems in this welding method:
1. owing to the characteristic of material itself, must adopt interrupted arc extinguishing weldering method during welding, inefficiency, and also the arc blow phenomenon is serious, the welding operation difficulty, and especially the vertical position of welding operation easier is bigger, and welder's labour intensity is big;
2. because of CW395 welding rod arc welding heat input quantity is bigger, and 917 low magnetic steels have poor thermal conductivity, characteristics that linear expansion coefficient is big, so very easily produce welding deformation in the welding process, especially obvious deflection deformation can occur during plate sheet welding;
Because when the inherent characteristic of material, 917 low magnetic steels+CCSB steel dissimilar steel adopted the CW395 welding rod to carry out SMAW, weldquality was difficult to guarantee, and can't realizes automatic welding.
Three, summary of the invention
The objective of the invention is shortcoming to above-mentioned existing welding method; Characteristic analysis and two kinds of steel welding characteristics through to 917 low magnetic steels, CCSB steel are analyzed; Seek a kind of desirable welding material and protective gas; Cooperate ancient high all position automatic welding to connect dolly, to reach the welding method of 917 low magnetic steels that the welded seam uniform in shaping is attractive in appearance, welding deformation is little, welding joint mechanical property is good+CCSB steel dissimilar steel.
The welding method of a kind of 917 low magnetic steels of the present invention+CCSB steel dissimilar steel is characterized in that: adopt the stainless steel solid core welding wire ER309L that is fit to different material steel welding Φ=1.0mm, welding equipment and running gear are with binary mixture (Ar+1.5%CO
2) protection, by corresponding welding parameter, carry out 917 low magnetic steels+CCSB steel dissimilar steel flat butt joint, horizontal butt joint, face upward the welding of butt joint, full-automatic upright butt joint, specifically the welding method step is following:
1), welding condition is selected for use
1. welding steel is selected for use: select 917 low magnetic steels+CCSB steel for use, steel plate thickness is 4-16mm;
2. welding equipment is selected for use: select the TPS4000 welding machine for use, be equipped with VR4000 wire-feed motor and water-cooled automatic welding gun;
3. running gear is selected for use: select for use ancient high all position automatic welding to connect dolly;
4. welding material is selected for use: welding wire is selected the stainless steel solid core welding wire ER309L of Φ=1.0mm for use; Protective gas is selected binary mixture (Ar+1.5%CO for use
2), the proportioning of binary mixture and purity are: the volumn concentration of argon gas (Ar) is 98.5%, the proportioning deviation is a soil 0.3%; Carbon dioxide gas (CO
2) volumn concentration be 1.5%, argon gas (Ar) purity is 99.99%, carbon dioxide gas (CO
2) purity is 99.50%;
5. welding parameter:
2), welding procedure
1. install, locate welding, adopt no gap to install the butt joint of the plate of 917 low magnetic steels+CCSB steel seam, the local gap value is 0-1mm, positions weldering at plate seam reverse side then, and tack welding length is 30-50mm, accomplishes during weldering that striking place is full, arc crater is filled up at receipts arc place;
2. groove welding; The plate seam is adopted carbon arc air gouging processing bevel for welding; 60 °-70 ° of angles; Carry out then conscientiously polishing carefully; In each 30-50mm scope of bevel for welding inside and both sides thereof; Postwelding descaling, iron rust, slag, paint, greasy dirt, plaster, foul such as water stain expose metallic luster until groove and both side surface thereof;
3. formally welding: before formal welding, adopt cutting torch, adopt little electric current 80A-110A, small voltage 17V-20V to weld then to toasting tide in welding position and each 30-50mm scope of both sides thereof; Weld more than forbidding to adopt above, the big voltage 21V of big electric current 120A, otherwise be prone to cause the alloying element scaling loss, and be prone to make weld seam defectives such as pore to occur;
4. multi-pass welding is adopted in the welding of 917 low magnetic steels+CCSB steel dissimilar steel abutment joint, and every weld seam must have backing welding and cosmetic welding, and its welding procedure is:
A. every welding bead welding; After every welding bead welding; In welding position and each 30-50mm scope of both sides thereof, must polish again; Bar welding bead weld defect and oxide skin in the removing, iron rust, slag, paint, greasy dirt, plaster, foul such as water stain expose metallic luster until welding position and both side surface thereof;
B. before every welding bead formally welds, must adopt cutting torch to toasting tide again in welding position and each 50-100mm scope of both sides thereof;
C. temperature must be controlled at 50-100 ℃ between weld seam layer/road.
The welding method of a kind of 917 low magnetic steels of the present invention+CCSB steel dissimilar steel is characterized in that the welding of described full-automatic upright butt joint, cooperate ancient high all position automatic welding to connect dolly and automatically weld.
Welding method with 917 low magnetic steels of the present invention+CCSB steel dissimilar steel; Carry out 917 low magnetic steels+CCSB steel dissimilar steel flat butt joint, horizontal butt joint, face upward the welding of butt joint, full-automatic upright butt joint; Outward appearance and internal soundness, the mechanical property that can reach welding point all satisfy the relevant criterion requirement, and be easy and simple to handle, production efficiency is high, appearance of weld is evenly attractive in appearance, welding deformation is little, welding joint mechanical property is good.
Five, the specific embodiment
Below in conjunction with embodiment the welding method of a kind of 917 low magnetic steels of the present invention+CCSB steel dissimilar steel is described further.
1. the welding method of the flat butt joint of embodiment 1:917 low magnetic steel+CCSB steel dissimilar steel.
(1) welding requirements of flat butt joint: weld slope is 0 °, deviation ± 5 °, and the weld rotation is 90 °, deviation ± 10 °;
(2) welding equipment is: the TPS4000 welding machine, be equipped with the VR4000 wire-feed motor, and adopt the water-cooled automatic welding gun;
(3) welding wire is: ER309L, Φ 1.0mm;
(4) protective gas is: Ar+1.5%CO
2
(5) welding parameter is:
Welding process: cooperated by two accredited welders, by 70 ° of double V-grooves, root face is 1-2mm, and the fit-up gap is that 917 low magnetic steel plates and CCSB steel plate are assembled in the requirement of 0-1mm, and 917 low magnetic steel plates and CCSB steel plate are implemented laterally to strengthen, in case post welding distortion; After 917 low magnetic steel plates and the assembling of CCSB steel plate are accomplished, regulate equipment and parameter by above-mentioned requirements, carry out the ground floor weldering (backing welding) and the second layer weldering (cosmetic welding) of groove face welding bead then, the groove face weld seam is divided into two layers and has welded; The groove back bead adopts carbon arc air gouging U type groove; Abrasive machine polishing cleaning is after seeing metallic luster; Technological parameter by welding current 100-110A, voltage 18-20V, gas flow 18-20L/min, dry extension of electrode degree 8-12mm welds, and groove back bead one deck has altogether welded.When putting down the butt joint welding operation, adopt leftward welding, promptly to walking, ground floor weld seam (being backing welding) adopts rectilinear motion, suitably teeter of second layer weld seam (being cosmetic welding) to welding gun along left.
2. the welding method of the horizontal butt joint of embodiment 2:917 low magnetic steel+CCSB steel dissimilar steel.
(1) horizontal butt joint welding requirements: weld slope is 0 °, 180 °, deviation ± 5 °; The weld rotation is 0 °, 180 °, deviation ± 10 °;
(2) welding equipment is: the TPS4000 welding machine, be equipped with the VR4000 wire-feed motor, and adopt the water-cooled automatic welding gun;
(3) welding wire is: ER309L, Φ 1.0mm;
(4) protective gas is: Ar+1.5%CO
2
(5) welding parameter is:
Welding process: cooperate by two accredited welders, assemble 917 low magnetic steel plates and CCSB steel plate, and 917 low magnetic steel plates and CCSB steel plate are implemented laterally to strengthen, in case post welding distortion by the requirement of 70 ° of double V-grooves, root face 1-2mm, fit-up gap 0-1mm; After the assembling of 917 low magnetic steel plates and CCSB steel plate is accomplished, regulate equipment and parameter, carry out the ground floor weldering of groove face welding bead by above-mentioned requirements, i.e. backing welding, and second and third road weldering, i.e. cosmetic welding, the groove face weld seam is divided into three roads and has welded; The groove back bead adopts carbon arc air gouging U type groove; Abrasive machine polishing cleaning is after seeing metallic luster; Technological parameter by welding current 100-110A, voltage 18-20V, gas flow 18-20L/min, dry extension of electrode degree 8-12mm welds; The groove back bead is arranged with groove face welding bead layout the same, is divided into three roads and has welded.During horizontal butt joint welding operation, adopt the rightward welding method, promptly welding gun is along right-hand to walking, and the welding gun moving linearly also can be made reciprocally swinging by a small margin in case of necessity.
3. the welding method of facing upward butt joint of embodiment 3:917 low magnetic steel+CCSB steel dissimilar steel.
(1) face upward the butt joint welding requirements: weld slope is 0 °, 180 °, deviation ± 15 °, and the weld rotation is 270 °, deviation ± 15 °;
(2) welding equipment is: the TPS4000 welding machine is equipped with VR4000 wire-feed motor and water-cooled automatic welding gun;
(3) welding wire is: ER309L, Φ 1.0mm;
(4) protective gas is: Ar+1.5%CO
2
(5) welding parameter is:
Operating process: cooperated by two accredited welders, by 70 ° of double V-grooves, root face is 1-2mm, and the fit-up gap is that 0-1mm requires assembling 917 low magnetic steel plates and CCSB steel plate, and 917 low magnetic steel plates and CCSB steel plate are implemented laterally to strengthen, in case post welding distortion; After 917 low magnetic steel plates and the assembling of CCSB steel plate, regulate equipment and parameter by above-mentioned requirements, carry out the ground floor weldering (being backing welding) and the second layer weldering (being cosmetic welding) of groove face welding bead, the groove face weld seam is divided into two layers and has welded; The groove back bead adopts carbon arc air gouging U type groove; Abrasive machine polishing cleaning is after seeing metallic luster; Technological parameter by welding current 90-100A, voltage 18-20V, gas flow 18-20L/min, dry extension of electrode degree 8-12mm welds, and groove back bead one deck has altogether welded.Face upward butt joint during welding operation, adopt leftward welding, promptly to walking, the suitable teeter of welding gun, and stop slightly a moment in seam groove both sides is in case drop down under weld seam center protrusion and the liquid metal along left for welding gun.
4. embodiment 4:917 low magnetic steel+CCSB steel dissimilar steel is automatically found the welding method of butt joint.
(1) full-automatic upright butt joint welding requirements: weld slope is 90 °, deviation ± 15 °;
(2) welding equipment is: the TPS4000 welding machine is equipped with VR4000 wire-feed motor and water-cooled automatic welding gun; Ancient high all position automatic welding connects dolly;
(3) welding wire is: ER309L, Φ 1.0mm;
(4) protective gas is: Ar+1.5%CO
2
(5) welding parameter is:
Welding process: cooperated by two accredited welders, by 70 ° of double V-grooves, root face is 1-2mm, and the fit-up gap is that 0-1mm requires assembling 917 low magnetic steel plates and CCSB steel plate, and 917 low magnetic steel plates and CCSB steel plate are implemented laterally to strengthen, in case post welding distortion; After 917 low magnetic steel plates and the assembling of CCSB steel plate; Adopt rigid fixation that 917 low magnetic steel plates and CCSB steel plate stand butt joint and fix, load onto the magnetic track, and the distance of adjusting track and weld groove is consistent in CCSB plate one side; The high all position automatic welding of fastening Gu connects dolly in orbit; Adjustment welding gun angle promptly forms 70-80 ° of angle with 917 low magnetic steel plates and CCSB steel plate below, then by above-mentioned welding condition and the carriage walking parameter of regulating; Carry out the ground floor weldering (being backing welding) and the second layer weldering (being cosmetic welding) of groove face welding bead, the groove face weld seam is divided into two layers and has welded; The groove back bead adopts carbon arc air gouging U type groove; Abrasive machine polishing cleaning is after seeing metallic luster; By welding current 90-100A, voltage 18-20V, speed of welding 14-16 rice/hour, gas flow 18-20L/min, dry extension of electrode degree be that the technological parameter of 8-12mm welds, groove back bead one deck has altogether welded.When upright butt joint is welded; Welding from lower to upper; Straight line moving during ground floor welding bead (being backing welding); The adjustment amplitude of fluctuation is done suitable teeter during second layer welding bead (being cosmetic welding); Connecing welding gun that dolly cooperates TPS4000 by the high all position automatic welding of Gu makes equal speed along weld seam and advances automatically; Lean on automated procedures control, realize upright butt welding termination process.
Below be that welding effect to the foregoing description 1-4 carries out visual examination, X ray film making, Mechanics Performance Testing
1. visual examination (evaluation criteria: GB/T3802-1997)
2.X ray film making (evaluation criteria: CB/T3558-94)
Through X ray film making inspection, excessive defects such as inner flawless of weld seam and slag inclusion, pore, the assessment of conformity of weld seam internal soundness.
3. mechanical property detection (evaluation criteria: GJB64.1A-97):
Judge that from above result the outward appearance of welding point and internal soundness, mechanical property all satisfy the relevant criterion requirement.
Adopt the present invention, 917 low magnetic steels+CCSB steel dissimilar steel is carried out all-position welding, easy and simple to handle, production efficiency is high, appearance of weld is evenly attractive in appearance, welding deformation is little, welding joint mechanical property is good.
Claims (2)
1. the welding method of 917 low magnetic steels+CCSB steel dissimilar steel is characterized in that: adopt the stainless steel solid core welding wire ER309L that is fit to different material steel welding Φ=1.0mm, welding equipment and running gear are with binary mixture (Ar+1.5%CO
2) protection, by corresponding welding parameter, carry out 917 low magnetic steels+CCSB steel dissimilar steel flat butt joint, horizontal butt joint, face upward the welding of butt joint, full-automatic upright butt joint, specifically welding method is following:
1), welding condition is selected for use
1. welding steel is selected for use: select 917 low magnetic steels+CCSB steel for use, steel plate thickness is 4-16mm;
2. welding equipment is selected for use: select the TPS4000 welding machine for use, be equipped with VR4000 wire-feed motor and water-cooled automatic welding gun;
3. running gear is selected for use: select for use ancient high all position automatic welding to connect dolly;
4. welding material is selected for use: welding wire is selected the stainless steel solid core welding wire ER309L of Φ=1.0mm for use; Protective gas is selected binary mixture (Ar+1.5%CO for use
2), the proportioning of binary mixture and purity are: the volumn concentration of argon gas (Ar) is 98.5%, the proportioning deviation is a soil 0.3%; Carbon dioxide gas (CO
2) volumn concentration be 1.5%, argon gas (Ar) purity is 99.99%, carbon dioxide gas (CO
2) purity is 99.50%;
5. welding parameter:
2), welding procedure
1. install, locate welding, adopt no gap to install the butt joint of the plate of 917 low magnetic steels+CCSB steel seam, the local gap value is 0-1mm, positions weldering at plate seam reverse side then, and tack welding length is 30-50mm, accomplishes during weldering that striking place is full, arc crater is filled up at receipts arc place;
2. groove welding; The plate seam is adopted carbon arc air gouging processing bevel for welding; 60 °-70 ° of angles; Carry out then conscientiously polishing carefully; In each 30-50mm scope of bevel for welding inside and both sides thereof; Postwelding descaling, iron rust, slag, paint, greasy dirt, plaster, foul such as water stain expose metallic luster until groove and both side surface thereof;
3. formally welding: before formal welding, adopt cutting torch, adopt little electric current 80A-110A, small voltage 17V-20V to weld then to toasting tide in welding position and each 30-50mm scope of both sides thereof;
4. multi-pass welding is adopted in the welding of 917 low magnetic steels+CCSB steel dissimilar steel abutment joint, and every weld seam must have backing welding and cosmetic welding, and its welding procedure is:
A. every welding bead welding; After every welding bead welding; To in welding position and each 30-50mm scope of both sides thereof, must polish again; Bar welding bead weld defect and oxide skin in the removing, iron rust, slag, paint, greasy dirt, plaster, foul such as water stain expose metallic luster until welding position and both side surface thereof;
B. before every welding bead formally welds, must adopt cutting torch to toasting tide in welding position and each 50-100mm scope of both sides thereof again:
C. temperature must be controlled at 50-100 ℃ between weld seam layer/road.
2. the welding procedure of 917 low magnetic steels according to claim 1+CCSB steel dissimilar steel is characterized in that described full-automatic upright butt joint welding, cooperate ancient high all position automatic welding to connect dolly and automatically weld.
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Cited By (13)
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| CN102909464A (en) * | 2012-10-22 | 2013-02-06 | 青岛联诚宏达轨道交通设备有限公司 | Manufacturing process for three girders of subway |
| CN103331504A (en) * | 2013-06-24 | 2013-10-02 | 中船桂江造船有限公司 | Single-side welding and double-side forming welding method for ceramic gasket |
| CN104646803A (en) * | 2015-02-15 | 2015-05-27 | 中船桂江造船有限公司 | Welding method of low alloy steel plate and ship plate |
| CN105014189A (en) * | 2015-07-09 | 2015-11-04 | 武汉钢铁(集团)公司 | Shielded metal arc welding method for high-manganese non-magnetic steel with tensile strength of 1000 MPa |
| CN106238959A (en) * | 2016-08-04 | 2016-12-21 | 上海交通大学 | Low magnetic steel gas protection wire |
| CN107498150A (en) * | 2017-08-18 | 2017-12-22 | 中国核工业二三建设有限公司 | A kind of different steel weld method |
| CN110253118A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plates+aluminium titanium steel composite material welding method |
| CN110253111A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 1cr18ni steel plate+aluminium aluminum steel composite material welding method |
| CN110253108A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of level-B steel+316L dissimilar steel |
| CN110253109A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of CCSB steel+1Cr18NI9TI dissimilar steel |
| CN110253112A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plate+1Cr18Ni9Ti different steel weld methods |
| CN110253107A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plate+Macr different steel weld methods |
| CN111299770A (en) * | 2020-03-30 | 2020-06-19 | 中国五冶集团有限公司 | Welding process for welding stainless steel with thickness of 2mm to end part of joint of suspended track beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102909464A (en) * | 2012-10-22 | 2013-02-06 | 青岛联诚宏达轨道交通设备有限公司 | Manufacturing process for three girders of subway |
| CN102909464B (en) * | 2012-10-22 | 2015-05-13 | 青岛联诚宏达轨道交通设备有限公司 | Manufacturing process for three girders of subway |
| CN103331504A (en) * | 2013-06-24 | 2013-10-02 | 中船桂江造船有限公司 | Single-side welding and double-side forming welding method for ceramic gasket |
| CN104646803A (en) * | 2015-02-15 | 2015-05-27 | 中船桂江造船有限公司 | Welding method of low alloy steel plate and ship plate |
| CN105014189A (en) * | 2015-07-09 | 2015-11-04 | 武汉钢铁(集团)公司 | Shielded metal arc welding method for high-manganese non-magnetic steel with tensile strength of 1000 MPa |
| CN106238959A (en) * | 2016-08-04 | 2016-12-21 | 上海交通大学 | Low magnetic steel gas protection wire |
| CN106238959B (en) * | 2016-08-04 | 2018-06-08 | 上海交通大学 | Low magnetic steel gas protection wire |
| CN107498150A (en) * | 2017-08-18 | 2017-12-22 | 中国核工业二三建设有限公司 | A kind of different steel weld method |
| CN110253118A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plates+aluminium titanium steel composite material welding method |
| CN110253111A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 1cr18ni steel plate+aluminium aluminum steel composite material welding method |
| CN110253108A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of level-B steel+316L dissimilar steel |
| CN110253109A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of welding method of CCSB steel+1Cr18NI9TI dissimilar steel |
| CN110253112A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plate+1Cr18Ni9Ti different steel weld methods |
| CN110253107A (en) * | 2019-07-12 | 2019-09-20 | 中船桂江造船有限公司 | A kind of 917 steel plate+Macr different steel weld methods |
| CN110253108B (en) * | 2019-07-12 | 2022-05-10 | 中船桂江造船有限公司 | Welding method for B-grade steel and 316L dissimilar steel |
| CN110253112B (en) * | 2019-07-12 | 2022-09-13 | 中船桂江造船有限公司 | Welding method for 917 steel plate and 1Cr18Ni9Ti dissimilar steel |
| CN110253118B (en) * | 2019-07-12 | 2022-11-15 | 中船桂江造船有限公司 | Welding method for 917 steel plate and aluminum-titanium steel composite material |
| CN111299770A (en) * | 2020-03-30 | 2020-06-19 | 中国五冶集团有限公司 | Welding process for welding stainless steel with thickness of 2mm to end part of joint of suspended track beam |
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