CN108581256A - A kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method - Google Patents
A kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method Download PDFInfo
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- CN108581256A CN108581256A CN201810385005.9A CN201810385005A CN108581256A CN 108581256 A CN108581256 A CN 108581256A CN 201810385005 A CN201810385005 A CN 201810385005A CN 108581256 A CN108581256 A CN 108581256A
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- welding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The present invention discloses a kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method, includes the following steps：Step S100, workpiece to be welded is provided, workpiece includes two-phase stainless steel facing and the two phase stainless steel web being arranged above two-phase stainless steel facing, the single groove with two-phase stainless steel facing welded corner joint is offered on two phase stainless steel web, the angle of groove is 40 ° 50 °, and the gap of groove is 0 3mm；Step S200, wig-wag is mounted on fillet welding trolley, by CO2Welding gun is fixed on wig-wag, and driving fillet welding trolley moves in the horizontal direction when automatic welding, and wig-wag drives CO2Welding gun carries out positive welding to groove successively and reverse side welds, and CO is arranged2Purity be higher than 99.5%.It can improve the bonding speed of two phase stainless steel complete penetraction and fusion in welding fillet weld, ensure welding quality.
Description
Technical field
The present invention relates to shipbuilding technical field more particularly to a kind of automation welderings of two phase stainless steel complete penetraction and fusion in welding fillet weld
Connect method.
Background technology
Chemical tanker belongs to one of high-tech, ship type of high added value, and construction is increasingly extensive, this ship type usually requires to adopt
It is manufactured with two phase stainless steel.Two phase stainless steel has the characteristics of austenite and ferritic stainless steel concurrently, has good corrosion resistant
Corrosion energy and abrasion resistance properties, but it requires extremely harshness to the heat input of welding.If heat input is too big when welding, weld seam heat
Zone of influence range increases, and metallographic structure also tends to coarse grains, disorder, causes embrittlement, is mainly shown as the plasticity of welding point
Index declines.If thermal weld stress is too small, causes hardened structure and be also easy to produce crackle, it is equally unfavorable to the impact flexibility of HAZ.
Chemical tanker is in the strong force structure of many of building course, and these structures usually require to be designed to that complete penetraction and fusion in welding welds
Connect form.For example, the weld seam node in Ship Structure between groove type wall and wall pier is complete penetraction and fusion in welding fillet weld, three line centering structures
(CM nodes) weld groove node is also complete penetraction and fusion in welding fillet weld.In traditional technology, two phase stainless steel complete penetraction and fusion in welding fillet weld can only adopt
With semi-automatic CO2Gas shielded arc welding is welded.But during the welding process since the number of plies of welding is more, in reality
Work progress in use semi-automation CO2Gas shielded arc welding, welding efficiency are relatively low；In addition, semi-automatic CO2Gas shielded arc welding category
More demanding for technical ability, the sense of responsibility of welder itself in manual operations, the roads welding Shi Ceng number needs connection and reasonable arrangement, is welding
The angle or defect generated in journey can carry out down welding together after must removing, and stability of the welding quality is relatively poor.
Invention content
It is an object of the invention to：A kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method is provided, can be carried
The speed of welding of high two phase stainless steel complete penetraction and fusion in welding fillet weld ensures welding quality.
To reach this purpose, the present invention uses following technical scheme：
A kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method is provided, is included the following steps：
Step S100, workpiece to be welded is provided, the workpiece includes two-phase stainless steel facing and is arranged in the two-phase
Two phase stainless steel web above stainless steel faceplate offers and the two-phase stainless steel facing on the two phase stainless steel web
The angle of the single groove of welded corner joint, the groove is 40 ° -50 °, and the gap of the groove is 0-3mm；
Step S200, wig-wag is mounted on fillet welding trolley, by CO2Welding gun is fixed on the wig-wag, automatic welding
The fillet welding trolley is driven to move in the horizontal direction when connecing, the wig-wag drives CO2Welding gun successively carries out just the groove
Face is welded and reverse side welding, and CO is arranged2Purity be higher than 99.5%.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
In the step 200, used welding condition is welding current 225-240A when carrying out front welding to the groove,
The speed of travel of weldingvoltage 28-30V, the welding tractor are 20-25cm/min.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
In the step 200, used welding condition is welding current 210-230A, weldering when being welded to the reverse side of the groove
Voltage 30-32V is met, the speed of travel of the welding tractor is 20-25cm/min.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
Further include step S210, before carrying out the reverse side welding to the groove, first to the back side of the groove in step S200
Carry out back chipping processing.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
In the step S210, the back chipping processing is carried out using ion clean-up machine.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
When carrying out the front welding and reverse side welding to the groove, it is all made of the more pass weld techniques of multilayer.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method, institute
It is 16mm to state groove and carry out the thickness of the front welding.
It is right as a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method
The thickness that the groove carries out the reverse side welding is 8mm.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method, institute
The thickness for stating two-phase stainless steel facing and/or the two phase stainless steel web is 8-32mm.
As a kind of preferred technical solution of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method,
After the completion of the groove carries out the front welding and reverse side welding, the welding slag of the groove circumference is cleared up, and by weld seam
Surface polishes smooth.
Beneficial effects of the present invention are：In two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method of the present invention, lead to
Fillet welding trolley is crossed to CO2Welding gun is controlled, and carries out positive welding to groove and reverse side welds, change two phase stainless steel and weld entirely
Welding is using the semi-automatic tradition welded thoroughly, can carry out automatic welding in carrying out two phase stainless steel complete penetraction and fusion in welding welding process
It connects, reduces welding polishing work when welding, improve the efficiency of welding, promote the competitiveness of shipyard.
Description of the drawings
Below according to drawings and examples, invention is further described in detail.
Fig. 1 is the structural schematic diagram of workpiece described in embodiment.
Fig. 2 is the status diagram that embodiment carries out the groove positive welding.
Fig. 3 is the status diagram that embodiment carries out the groove reverse side welding.
Fig. 4 is the structural schematic diagram that workpiece completes after complete penetraction and fusion in welding fillet weld seam described in embodiment
In figure：
1, two-phase stainless steel facing；2, two phase stainless steel web；3, groove；4, welding rod；5, fillet welding trolley；6、CO2Welding gun；
7, wig-wag；8, welding bead.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in figures 1-4, in this present embodiment, a kind of two phase stainless steel complete penetraction and fusion in welding fillet weld of the present invention is automatic
Change welding method, includes the following steps：
Step S100, workpiece to be welded is provided, the workpiece includes two-phase stainless steel facing 1 and is arranged in the two-phase
The two phase stainless steel web 2 of the top of stainless steel faceplate 1 offers and the two phase stainless steel on the two phase stainless steel web 2
The angle beta of the single groove 3 of 1 welded corner joint of panel, the groove 3 is 40 ° -50 °, and the gap H of the groove 3 is 0-3mm；
Step S200, wig-wag 7 is mounted on fillet welding trolley 5, by CO2Welding gun 6 is fixed on the wig-wag 7, from
The fillet welding trolley 5 is driven to move in the horizontal direction when dynamic welding, the wig-wag 7 drives CO2Welding gun 6 is successively to the groove
3 carry out front welding and reverse side welding, and CO is arranged2Purity be higher than 99.5%.
In shipbuilding industry, automatic welding is an important indicator of the production capacity for weighing a shipbuilding enterprise, in
In two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method of the present invention, by fillet welding trolley 5 to CO2Welding gun 6 is controlled,
Positive welding and reverse side welding are carried out to groove 3, the welding of two phase stainless steel complete penetraction and fusion in welding is changed and uses CO2Gas shielded arc welding half is certainly
The tradition of dynamicization welding, makes that automatic welding can be carried out in carrying out two phase stainless steel complete penetraction and fusion in welding welding process, when reducing welding
Welding polish work, improve the efficiency of welding, promote the competitiveness of shipyard.
In actual construction, need to be welded two phase stainless steel web 2 is vertical with two-phase stainless steel facing 1, or will
The inclination of two phase stainless steel web 2 is welded on two-phase stainless steel facing 1.Double when 2 vertical welding of two phase stainless steel web to be mounted in
When phase stainless steel faceplate 1, since the bottom of two phase stainless steel web 2 and the upper surface of two-phase stainless steel facing 1 are mutually parallel, need
Will two phase stainless steel web 2 bottom cut portion two phase stainless steel web 2 with two phase stainless steel web 2 formed one-way slope
Mouth 3, facilitates and two phase stainless steel web 2 is welded on two-phase stainless steel facing 1；It is welded when by the inclination of two phase stainless steel web 2
In two-phase stainless steel facing 1, due to needing 2 slant setting of two phase stainless steel web in the two-phase stainless steel facing 1
Top, shape has angle between the bottom and the upper surface of two-phase stainless steel facing 1 of two phase stainless steel web 2, and the angle is
Single groove 3.It certainly,, can be on the basis of angle to two phase stainless steel abdomen if angle is too small in actual work progress
The bottom of plate 2 is cut to increase the angle of groove 3, and welding is facilitated.In general, the inclination angle alpha of two phase stainless steel web 2 is
0°-45°。
Specifically, in the step 200, used welding condition is when being welded to the front of the groove 3
The speed of travel of welding current 210-230A, weldingvoltage 30-32V, the welding tractor are 20-25cm/min, by heat input
Control is 15.1-21.6kj/cm；In the step 200, used welding procedure when being welded to the reverse side of the groove 3
Parameter is welding current 210-230A, and the speed of travel of weldingvoltage 30-32V, the welding tractor are 20-25cm/min, will
Heat input control is 15.12-22.08kj/cm.Due to the particularity of two phase stainless steel performance itself, to two phase stainless steel face
The requirement when workpiece of plate 1 carries out complete penetraction and fusion in welding fillet weld seam to heat input is high, passes through to front welding and reverse side welding
The setting of technological parameter keeps the plasticity of the welding point of two phase stainless steel full penetration weld, it is ensured that the structural strength of groove 3.
As a kind of preferred scheme of the two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method, in step
Further include step S210, before carrying out the reverse side welding to the groove 3 in S200, first to the back side of the groove 3 into
The processing of row back chipping.The high temperature generated during the front to groove 3 is welded can cause brokenly the reverse side metallographic structure of groove 3
Bad, root is handled clearly before carrying out back side welding to groove 3, and the bottom part of cutting two phase stainless steel web 2 removes groove 3
The back side and front connection position impurity or pit, make groove 3 front and groove 3 the back side carry out full penetration, reduce weldering
Defect is connect, improves and ensures welding quality.In the present embodiment, ion clean-up machine carries out back chipping processing.
When carrying out the front welding and reverse side welding to the groove 3, it is all made of more 8 Welders of welding bead of multilayer
Skill.In specific welding, CO2Welding gun 6 drives welding rod 4 to be swung along the short transverse radian of the groove 3, while fillet welding is small
Vehicle 5 drives the CO2Welding gun 6 is gradually distance from groove 3.Fillet welding trolley 5 stops some position in the horizontal direction, profit first
Use CO2Welding gun 6 swings the welding bead 8 of 4 welding groove of welding rod, 3 lower layer, and it is corresponding to wait for that the welding of welding bead 8 of lower layer is welded again after the completion
Upper layer welding bead 8, and make the contact of two layers 8 forming face of welding bead, then move fillet welding trolley 5 slightly by it of welding rod 4 and groove 3
Between distance pull open certain distance after, repeat above-mentioned action and next welding bead 8 welded, welding rod 4 is in each layer welding bead 8
Be welded on to groove 3 carry out positive welding and reverse side welding after the completion of, the plane point of intersection of adjacent two layers welding bead 8 in groove 3
Connecting line is non-rectilinear, avoids each being overlapped mutually for weak area and influences the structural strength of 3 weld seam of groove.Preferably, groove 3
The plane point of intersection of interior adjacent two layers welding bead 8 is on different straight lines.
Wherein, the thickness that the groove 3 carries out the front welding is 16mm, and the reverse side weldering is carried out to the groove 3
The thickness connect is 8mm.Front welding and the setting of reverse side throat thickness make thickness and the reverse side welding of the front welding of groove 3
Thickness differs, main to be reinforced the groove 3 of workpiece using the front welding of groove 3, and the welding of the reverse side of groove 3 is to work
The effect that the groove 3 of part is assisted, by this design, while saving welding material, the structure for also capableing of reinforcement of weld is strong
Degree.
In embodiment, the thickness of the two-phase stainless steel facing 1 and the two phase stainless steel web 2 is 8-32mm.Institute
The model E2209T1-1, a diameter of 1.2mm for the welding rod 4 stated.
After the completion of the groove 3 carries out the front welding and reverse side welding, the weldering of 3 circumference of the groove is cleared up
Slag, and face of weld is polished smooth.
In description herein, it is to be understood that term " first ", " second " are only used for being distinguish in description,
Without particular meaning.
It is to be understood that above-mentioned specific implementation mode is only that presently preferred embodiments of the present invention and institute's application technology are former
Reason, in technical scope disclosed in this invention, variation that any one skilled in the art is readily apparent that or
It replaces, should all cover within the scope of the present invention.
Claims (10)
1. a kind of two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method, which is characterized in that include the following steps：
Step S100, workpiece to be welded is provided, the workpiece includes two-phase stainless steel facing and is arranged in the two-phase stainless
Two phase stainless steel web above steel facing offers and the two-phase stainless steel facing fillet welding on the two phase stainless steel web
The angle of the single groove connect, the groove is 40 ° -50 °, and the gap of the groove is 0-3mm；
Step S200, wig-wag is mounted on fillet welding trolley, by CO2Welding gun is fixed on the wig-wag, and when automatic welding drives
It moves the fillet welding trolley to move in the horizontal direction, the wig-wag drives CO2Welding gun carries out positive welding to the groove successively
It is welded with reverse side, CO is set2Purity be higher than 99.5%.
2. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 1, which is characterized in that in institute
It states in step 200, used welding condition is welding current 225-240A, weldering when carrying out front welding to the groove
Voltage 28-30V is met, the speed of travel of the welding tractor is 20-25cm/min.
3. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 2, which is characterized in that it is special
Sign is, in the step 200, used welding condition is welding current when being welded to the reverse side of the groove
The speed of travel of 210-230A, weldingvoltage 30-32V, the welding tractor are 20-25cm/min.
4. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 3, which is characterized in that in step
Further include step S210, before carrying out the reverse side welding to the groove in rapid S200, first to the back side of the groove into
The processing of row back chipping.
5. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 4, which is characterized in that in institute
It states in step S210, the back chipping processing is carried out using ion clean-up machine.
6. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 1, which is characterized in that right
When the groove carries out the front welding and reverse side welding, it is all made of the more pass weld techniques of multilayer.
7. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 6, which is characterized in that described
The thickness that groove carries out the front welding is 16mm.
8. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 7, which is characterized in that institute
It is 8mm to state groove and carry out the thickness of the reverse side welding.
9. two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding method according to claim 8, which is characterized in that described
The thickness of two-phase stainless steel facing and/or the two phase stainless steel web is 8-32mm.
10. according to claim 1-9 any one of them two phase stainless steel complete penetraction and fusion in welding fillet weld automatic welding methods, feature
It is, after the completion of the groove carries out the front welding and reverse side welding, clears up the welding slag of the groove circumference, and
Face of weld is polished smooth.
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Cited By (4)
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|---|---|---|---|---|
| CN110026644A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The corner connection soldering method and corner connector of composite plate and two phase stainless steel |
| CN111570971A (en) * | 2020-05-28 | 2020-08-25 | 上海外高桥造船有限公司 | Welding method for full penetration fillet weld of bulkhead lower pier and double-layer bottom high-stress area |
| CN112222567A (en) * | 2020-09-25 | 2021-01-15 | 广船国际有限公司 | Welding method for ship manufacturing |
| CN114669838A (en) * | 2022-05-07 | 2022-06-28 | 广船国际有限公司 | Welding method of T-shaped fillet weld |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026644A (en) * | 2019-04-10 | 2019-07-19 | 中广核研究院有限公司 | The corner connection soldering method and corner connector of composite plate and two phase stainless steel |
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| CN114669838B (en) * | 2022-05-07 | 2024-04-30 | 广船国际有限公司 | Welding method of T-shaped fillet weld |
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Application publication date: 20180928 |