CN102615405A - Welding method of stainless steel composite plates - Google Patents
Welding method of stainless steel composite plates Download PDFInfo
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- CN102615405A CN102615405A CN2012101062699A CN201210106269A CN102615405A CN 102615405 A CN102615405 A CN 102615405A CN 2012101062699 A CN2012101062699 A CN 2012101062699A CN 201210106269 A CN201210106269 A CN 201210106269A CN 102615405 A CN102615405 A CN 102615405A
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Abstract
The invention discloses a welding method of stainless steel composite plates, which is used for welding of the stainless steel composite plates with multi layer thickness ranging from 1mm to 1.5mm. The welding method includes a pre-welding preparation step and a welding step. The pre-welding preparation step includes a step of removing basic layer surface oxide and multi layer surface oxide of two stainless steel composite plates to be welded and a step of assembling positioned welding, connecting the two stainless steel composite plates to be welded on the same plane in abutting mode and conducting tack welding. The welding step includes a multi layer welding step and a basic layer welding step. The multi layer welding step adopts thin wire submerged-arc welding, and a welding power supply has flat external characteristics. The basic layer welding step adopts double-wire pulse submerged-arc welding, and the welding power supply has flat external characteristics.
Description
Technical field
The present invention relates to welding procedure, relate in particular to a kind of high-speed welding method that is used for stainless steel clad plate.
Background technology
It is basic unit that stainless steel clad plate generally includes with the carbon steel, be multiple layer with stainless steel; The composite plate of be combined into; (also can be described as compound layer of stainless steel or coating according to its stainless steel double layer; All abbreviate multiple layer in this specification as) thickness, can be divided into traditional stainless steel clad plate and novel stainless steel composite board.
The multiple layer thickness of traditional stainless steel clad plate will reach 3mm because the thickness of its multiple layer is minimum more than 3mm, energy resource consumption is big in manufacture process.And the multiple layer thickness of novel stainless steel clad plate only needs 1mm-1.5mm, and new type composite board is to adopt rolling to manufacture, and the NEW TYPE OF COMPOSITE board manufacturing process is safer than conventional composite plate, environmental protection, energy-conservation, low-carbon (LC), and market prospects are quite good.
Traditional stainless steel clad plate adopts explosive welding (EW) to process, the operation in tandem in several steps below the butt welding of conventional composite plate is pressed,
1, earlier the multiple layer groove of two stainless steel clad plates to be welded carried out machining, adds and need machine away man-hour behind the multiple layer downwards about 1mm, width for the weld seam center to about the 5～10mm of both sides;
2, carry out the welding of basic unit;
3, to the basic unit's carrying out flaw detection after the welding;
4, welding transition layer;
5, carry out the welding of multiple layer;
6, carrying out flaw detection.
For novel Welding of Stainless Composite Plate, if adopt above-mentioned step, operations such as its groove processing, middle carrying out flaw detection, transition zone welding all make whole welding process efficient not high.And, utilize above-mentioned method that novel stainless steel clad plate is welded, also can't realize high-speed welding, and then influence the application prospect of stainless steel clad plate; As blindly improving speed of welding, then the outward appearance of welding back gained finished product, fusion penetration and multiple layer weld seam ferrite content etc. can not reach specified standard simultaneously.
Therefore, need the exploitation stainless steel clad plate that a kind of operation is simple, welding quality is good to carry out the stainless steel clad plate high-speed welding method of high-speed welding.
Summary of the invention
To the problem that exists in the prior art; What the object of the present invention is to provide that a kind of operation is simple, welding quality is good carries out the Welding of Stainless Composite Plate method of high-speed welding for novel stainless steel clad plate, with the stainless steel clad plate welding method complex procedures that overcomes prior art, the technical problem that speed of welding is not high and welding quality is bad.
The present invention realizes through following technical scheme:
A kind of Welding of Stainless Composite Plate method is used for the Welding of Stainless Composite Plate that multiple layer thickness is 1-1.5mm, and said welding method comprises preceding preparation process of weldering and welding step; Preparation process comprises before the said weldering: the step of removing the substrate surface oxide and the clad surface oxide of two stainless steel composite boards to be welded; The step of assembling and positioning weldering is docked said two stainless steel composite boards to be welded, and is carried out tack welding in same plane; Said welding step comprises multiple layer welding step and basic unit's welding step, and the welding manner of said multiple layer welding step is filament submerged-arc welding, and the source of welding current is the source of welding current with flat external characteristics; And the welding manner of basic unit's welding step is mariages pulse submerged-arc welding, and the source of welding current is the pulse gas-shielded weldering source of welding current of mariages with flat external characteristics.
Beneficial effect of the present invention is; Welding of Stainless Composite Plate method of the present invention; At first do not need the program complicated mechanical process processing of groove (for example to), directly multiple layer of welding and basic unit when next welds, the operation that carrying out flaw detection and transition zone weld in the middle of not needing.Realized high-speed welding, and operation can save material simply again, particularly, improve its speed of welding greatly the production of the helix tube stainless steel clad plate that requires high-speed welding to the novel stainless steel composite board.
Description of drawings
Fig. 1 is the layout sketch map of test plate (panel) in the Welding of Stainless Composite Plate method of the present invention, run-on tab and receipts arc plate;
Fig. 2 is the multiple layer postwelding shaping sketch map of the Welding of Stainless Composite Plate method of the embodiment of the invention;
Fig. 3 is basic unit's postwelding shaping sketch map of the Welding of Stainless Composite Plate method of the embodiment of the invention.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be the usefulness of being used as explanation in itself, but not in order to restriction the present invention.
The high-speed welding method of the stainless steel clad plate of the embodiment of the invention; Be used for the Welding of Stainless Composite Plate that thickness is 1.0-1.5mm; Just be used for the welding of novel stainless steel composite board, welding method of the present invention mainly comprises preceding preparation process of weldering and welding step, and welding step is the welding by both sides of horizontal direction; Therefore comprise basic unit's welding step and multiple layer welding step, below do concrete the introduction respectively:
One, preparation process before the weldering
As shown in Figure 1; In the present embodiment, two stainless steel composite board test plate (panel)s 1,2 (hereinafter to be referred as test plate (panel) 1,2) to be welded, its basic unit is the X60 carbon steel; Groundwork thickness for example is 10.3mm; Multiple layer is the 316L stainless steel, and multiple layer thickness for example is 1mm, and the length and width of two test plate (panel)s 1,2 for example are length 500mm, width 150mm.Above-mentioned specification etc. only is for illustrating, and is not in order to restriction protection scope of the present invention.
After confirming test plate (panel) 1,2 good to be welded, the oxide of cleaning polishing test plate (panel) 1,2 substrate surface makes and exposes metallic luster about welding region 20mm, and multiple layer is cleaned with acetone and removed oxide on surface.
Then, as shown in Figure 1, with test plate (panel) 1,2 butt joints, mechanical processing steps of the prior art without bevel, has therefore been saved in 1,2 gaps that keep 0.5mm of test plate (panel) on test plate (panel) 1,2, simplified technology.
Remove after the oxide layer, carry out the assembling and positioning weldering.When carrying out the assembling and positioning weldering; Will be put into two test plate (panel)s 1,2 on the plane, prevent misalignment, both sides add run-on tab 3, receive arc plate 4; Test plate (panel) 1,2, run-on tab 3 and receipts arc plate 4 are carried out tack welding; The solder joint of tack welding is welded in basic unit's one side of test plate (panel) 1,2 as far as possible, comprises basic unit's one side of run-on tab 3 and test plate (panel) 1,2, and basic unit's one side of receiving arc plate 4 and test plate (panel) 1,2.During tack welding, fusion length is about about 40mm～50mm.
Because all need use solder flux when carrying out basic unit's welding step with multiple layer of welding step, therefore after finishing above-mentioned steps, as requested solder flux is dried insulation simultaneously when perhaps carrying out above-mentioned steps, remove the moisture in the solder flux.
Before finishing above-mentioned weldering, after the preparation process, just can carry out basic unit's welding step and multiple layer welding step, basic unit's welding step and multiple layer welding step also can be carried out in no particular order simultaneously.
Two, multiple layer welding step
When carrying out multiple layer of welding step, welding manner adopts filament submerged-arc welding, but the source of welding current that the source of welding current adopts indicatrix better to have flat external characteristics carries out with the high speed of protecting multiple layer welding.The gas shielded arc welding source of welding current preferably, it promptly has flat external characteristics.The gas shielded arc welding source of welding current is a kind of dc source, adopts opposition method.The welding manner of multiple layer welding adopts filament submerged-arc welding, also is in order to reduce ferrite and to strengthen speed of welding.
Before carrying out multiple layer welding, adjust welding conditions, make the fusion penetration of its multiple layer welding be controlled at 2mm～3mm, the welding current I of multiple layer welding can be between 270-360A, and voltage U is between between the 29-35V, about stem elongation 10mm～12mm.When multiple layer welds, keep certain stem elongation, change influence to avoid stem elongation to welding current.
When carrying out multiple layer of welding, welding material can be selected Φ 1.2mm, stainless steel solid core welding wire for use, and the solder flux that is used for submerged arc is preferably the J601 solder flux, and this solder flux can effectively reduce the ferrite content of multiple layer weld seam, improves welding performance.
After the middle of run-on tab 3 is ignited electric arc, open welding tractor, adopt the linear arc manipulation, after electric arc is crossed run-on tab 3, change the During normal welding of test specimen 1,2 over to.After the welding beginning, the welding gun angle left and right sides on the welding tractor is controlled at 90 °, and the welding top rake remains on about 80 ° to 90 °.Welding wire will be aimed at the center line of two test plate (panel)s 1,2 all the time during welding, prevent weldering partially, defective such as fusion is bad and fusion penetration is overproof.Fusion penetration and molten wide control for the molten bath; Because it is dark that the size of current decision is dissolved; The voltage swing decision is molten wide, therefore can write down the voltage and the electric current change procedure of each welding, according to fusion penetration after the welding and molten wide variation; Adjust voltage and electric current when welding next time, make fusion penetration meet the requirements more with molten wide.
When carrying out multiple layer of welding, the solder flux cladding thickness will protect the molten bath of multiple layer welding and can not pile height too thick or too thin.When welding when receiving the about 150mm of arc plate 4, stop welding tractor again and close welding machine, can reduce like this because of closing the too early long arc that causes of welding machine and cheat and stay on the test plate (panel) 1,2.
Welding of Stainless Composite Plate method of the present invention; The welding material (being welding wire) that its multiple layer welding is adopted also is not limited to above-mentioned with solder flux; If the multiple layer of test plate (panel) 1,2 is the 304L stainless steel; Then welding material can adopt Φ 1.2mm, stainless steel solid core welding wire and J601 solder flux, can reach equally to improve speed of welding and the purpose that reduces ferrite content.
The Welding of Stainless Composite Plate method of the embodiment of the invention; Its multiple layer speed of welding can reach, and speed of welding 1.8m～2.0m/min, welding tractor can adopt welding tractor at a high speed; Can support this speed fully, this speed is far above the speed of the 0.5m/min of prior art.
Three, basic unit's welding step
When carrying out basic unit's welding step, welding manner adopts mariages pulse submerged-arc welding, and to strengthen the fusion penetration of basic unit's welding, the source of welding current adopts the pulse gas-shielded weldering source of welding current of mariages, carries out with the high speed that guarantees basic unit's welding.The pulse gas-shielded weldering source of welding current of mariages is a kind of direct current pulse power source, also adopts opposition method.
Before carrying out basic unit's welding; Adjust welding conditions, the preceding wire bond filament diameter Φ in the mariages can be 1.2mm, wire feed rate 23-25m/min, pulse frequency 370-390HZ, background current 100A, burst length 1.5-1.9ms, weldingvoltage 46V, pulse shape select for use " steep " type, average welding current greatly about about 600A, average weldingvoltage can reach about 710A at 40.5V, pulse peak current;
Back wire bond filament diameter in the mariages is about Φ 1.6mm, wire feed rate 17-19m/min, pulse frequency 380-400HZ, background current 100A, burst length 1.8-2.0ms, weldingvoltage 58V, impulse form selection " very flat " type, the average about 800A of welding current, on average about weldingvoltage 45.2V, pulse peak current 830A.
When carrying out basic unit's welding step, stem elongation is controlled at about 12mm～15mm, and during at 1.8m～2m/min, its fusion penetration reaches 8.5mm～9mm in speed of welding.Welding material can be selected the JS60-C welding wire for use, and silk used with back two kinds of welding wires of silk before the SJ101 solder flux cooperated.
Carrying out basic unit when welding, at first before and after the adjustment two in straight line, and all be cut into acute angle to the welding wire head of preceding silk and back thread.At run-on tab 3 is that the middle of 150mm is ignited behind the electric arc apart from the distance of test specimen 1,2, opens the source of welding current (also claiming welding machine) and welding tractor, adopts the linear arc manipulation, after electric arc is crossed run-on tab 3, changes the normal basic unit welding of test plate (panel) 1,2 over to.
After basic unit's welding beginning, the welding gun angle of welding tractor is controlled at about 90 °, about 100 °～110 ° of preceding silk top rakes.About 70 °～80 ° of back silk top rakes, during welding before and after welding wire to aim at the center line of 1,2 of two test plate (panel)s all the time, prevent weldering partially, fusion is bad, fusion penetration not enough and take off defectives such as slag is bad.Solder paste thickness is similar with common submerged-arc welding, to protect the molten bath.When be welded to receive arc plate 4 apart from about test plate (panel) 1, the 2 terminal 180mm after, stop welding tractor again and close welding machine, can reduce like this because of closing long arc that welding machine causes too early and cheat and stay on the test specimen.
After above-mentioned basic unit's welding step and multiple layer welding step; Remove the run-on tab 3 and receipts arc plate 4 of both sides, the finished product after can welding, its outward appearance is as shown in Figures 2 and 3; Can know that its outward appearance that multiple layer postwelding is shaped and basic unit's postwelding is shaped is all more attractive in appearance, can reach the standard of application.Detect multiple layer fusion penetration 2.5mm～3mm through physics and chemistry; Radiography I level; Macrofracture root, weld seam, weld heat-affected zone do not have defectives such as lack of penetration, crackle, incomplete fusion; Intercrystalline corrosion is qualified; Multiple layer weld seam ferrite content mean value is 5.75%, meets to be lower than 10% multiple layer weld seam ferrite content standard; Tensile strength 560MPa also meets the tensile strength standard; Each item physical and chemical index all meets the requirements and reaches better level.
The Welding of Stainless Composite Plate method of the embodiment of the invention; The speed of its basic unit's welding and multiple layer welding all can reach the fair speed of 1.8-2.0 rice per minute; For the fast speed with welding adapts, can select translational speed welding tractor faster for use, perhaps can adopt the method for setting up the less track of frictional force; Improve the translational speed of welding tractor and welding gun, to adapt to the requirement of high-speed welding.
Welding of Stainless Composite Plate method of the present invention; Can be used for the manufacturing of stainless steel clad plate spiral welded pipe; In the manufacture process of carrying out spiral welded pipe; The mode that can adopt multiple layer welding and basic unit welding to carry out synchronously, also can adopt will answer layer welding and basic unit weld respectively near the minimum point of welded tube inner periphery, near the mode of carrying out the peak of welded tube excircle.The spiral welded pipe of processing has the advantage of low cost of manufacture, long service life, becomes the upgraded product of China's water delivery heat supply pipeline, oil and gas pipeline pipeline.
The Welding of Stainless Composite Plate method of the embodiment of the invention does not at first need the complicated machining process of program, directly welds multiple layer and basic unit when next welds, the operation of carrying out flaw detection and transition zone welding in the middle of not needing.Realized high-speed welding, and operation can save material simply again, particularly, improve its speed of welding greatly the production of the helix tube stainless steel clad plate that requires high-speed welding to the novel stainless steel composite board.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (10)
1. a Welding of Stainless Composite Plate method is used for the Welding of Stainless Composite Plate that multiple layer thickness is 1-1.5mm, it is characterized in that, said welding method comprises preceding preparation process of weldering and welding step;
Preparation process comprises before the said weldering:
Remove the step of the substrate surface oxide and the clad surface oxide of two stainless steel composite boards to be welded;
The step of assembling and positioning weldering is docked said two stainless steel composite boards to be welded, and is carried out tack welding in same plane;
Said welding step comprises multiple layer welding step and basic unit's welding step, and the welding manner of said multiple layer welding step is filament submerged-arc welding, and the source of welding current is the source of welding current with flat external characteristics; And the welding manner of basic unit's welding step is mariages pulse submerged-arc welding, and the source of welding current is the Double-wire pulsed welding source of welding current with flat external characteristics.
2. Welding of Stainless Composite Plate method as claimed in claim 1 is characterized in that, in the preparation process, the fit-up gap is 0.5mm before the said weldering, and the fusion length when point is solid is 40-50mm.
3. Welding of Stainless Composite Plate method as claimed in claim 2; It is characterized in that; In the step of assembling and positioning weldering; Also comprise two stainless steel composite boards to be welded and run-on tab and receive the arc plate and carry out tack welding, and the solder joint of said tack welding is in said run-on tab and basic unit, said receipts arc plate and basic unit's one side.
4. Welding of Stainless Composite Plate method as claimed in claim 1 is characterized in that, in said multiple layer welding step, the solder flux that is adopted is the J601 solder flux.
5. Welding of Stainless Composite Plate method as claimed in claim 4 is characterized in that, in said basic unit welding step, the solder flux that is adopted is the SJ101 solder flux.
6. Welding of Stainless Composite Plate method as claimed in claim 1 is characterized in that, in the said basic unit welding step, preceding silk top rake is the 100-110 degree, and back silk top rake is the 70-80 degree.
7. Welding of Stainless Composite Plate method as claimed in claim 5; It is characterized in that; In the said basic unit welding step, the pulse frequency that preceding wire bond connects is that 370-390Hz, background current are, pulse peak current 710A about 100A, burst length 1.5-1.9ms, average welding current 600A; The pulse frequency 380-400HZ that back wire bond connects, background current 100A, burst length 1.8-2.0ms, average welding current 800A, pulse peak current 830A.
8. Welding of Stainless Composite Plate method as claimed in claim 5 is characterized in that, said basic unit welding step and said multiple layer welding step are carried out simultaneously.
9. Welding of Stainless Composite Plate method as claimed in claim 5 is characterized in that, in the said multiple layer welding step, said multiple layer is the thick 316L stainless steel of 1mm, and welding material is the stainless steel solid core welding wire.
10. Welding of Stainless Composite Plate method as claimed in claim 5 is characterized in that, in the said multiple layer welding step, said multiple layer is a 304L type stainless steel, and welding material is the stainless steel solid core welding wire.
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Cited By (8)
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| CN103862183A (en) * | 2014-03-06 | 2014-06-18 | 济钢集团有限公司 | High-efficiency welding method of stainless steel composite board |
| CN104475977A (en) * | 2014-12-16 | 2015-04-01 | 沈阳富创精密设备有限公司 | IC (Integrated Circuit) equipment ultra-large aluminum alloy cavity welding method |
| CN104668720A (en) * | 2015-02-09 | 2015-06-03 | 中建一局钢结构工程有限公司 | Welding method for I-shaped butt joint of steel plates |
| CN105127566A (en) * | 2015-09-29 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Full penetration welding method of large-thickness carbon steel and stainless steel clad plate |
| CN105328316A (en) * | 2015-11-20 | 2016-02-17 | 金川集团股份有限公司 | Welding method for plates and strips |
| CN107486606A (en) * | 2017-08-22 | 2017-12-19 | 苏州双金实业有限公司 | A kind of welding method of stainless steel clad plate standardization |
| CN110899980A (en) * | 2019-12-10 | 2020-03-24 | 沈阳富创精密设备有限公司 | Plasma arc-laser hybrid welding method for high-sealing aluminum alloy rectangular cavity |
| CN111745269A (en) * | 2020-07-10 | 2020-10-09 | 首钢集团有限公司 | Double-sided submerged arc welding method for stainless steel composite plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103862183A (en) * | 2014-03-06 | 2014-06-18 | 济钢集团有限公司 | High-efficiency welding method of stainless steel composite board |
| CN103862183B (en) * | 2014-03-06 | 2016-02-03 | 济钢集团有限公司 | A kind of stainless steel clad plate high-efficiency welding method |
| CN104475977A (en) * | 2014-12-16 | 2015-04-01 | 沈阳富创精密设备有限公司 | IC (Integrated Circuit) equipment ultra-large aluminum alloy cavity welding method |
| CN104668720A (en) * | 2015-02-09 | 2015-06-03 | 中建一局钢结构工程有限公司 | Welding method for I-shaped butt joint of steel plates |
| CN105127566A (en) * | 2015-09-29 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Full penetration welding method of large-thickness carbon steel and stainless steel clad plate |
| CN105127566B (en) * | 2015-09-29 | 2017-03-08 | 青岛兰石重型机械设备有限公司 | The complete penetraction and fusion in welding welding method of big thickness carbon steel stainless steel clad plate |
| CN105328316A (en) * | 2015-11-20 | 2016-02-17 | 金川集团股份有限公司 | Welding method for plates and strips |
| CN107486606A (en) * | 2017-08-22 | 2017-12-19 | 苏州双金实业有限公司 | A kind of welding method of stainless steel clad plate standardization |
| CN110899980A (en) * | 2019-12-10 | 2020-03-24 | 沈阳富创精密设备有限公司 | Plasma arc-laser hybrid welding method for high-sealing aluminum alloy rectangular cavity |
| CN111745269A (en) * | 2020-07-10 | 2020-10-09 | 首钢集团有限公司 | Double-sided submerged arc welding method for stainless steel composite plate |
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