CN109514052A - A kind of high-strength steel welding method of thin plate and application - Google Patents
A kind of high-strength steel welding method of thin plate and application Download PDFInfo
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- CN109514052A CN109514052A CN201811613805.8A CN201811613805A CN109514052A CN 109514052 A CN109514052 A CN 109514052A CN 201811613805 A CN201811613805 A CN 201811613805A CN 109514052 A CN109514052 A CN 109514052A
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- welding
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- strength steel
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
Abstract
The invention discloses a kind of thin plate high-strength steel double sides double arcs to connect method and application, and thin plate high-strength steel double sides double arc connects method and includes the following steps: that X-type groove is made in workpiece welding position by realization, and X-type bevel angle is 80 °~90 °, and groove gap is 2~5mm；Then two-sided double arc backing weldings are carried out；Finally carry out two-sided double arc cosmetic weldings；Two-sided double arc backing welding protective gas are Ar gas, and Ar gas purity is 99.999%, gas flow 20L/min; 88~135A of welding current, 9.6~12.1V of weldingvoltage, 5.12~20.31kJ/cm of heat input; 4~9cm/min of speed of welding, front, back side welding gun spacing are 30~50mm.Two-sided double arc cosmetic welding protective gas are Ar gas and CO2Mixed gas, gas flow 10L/min, 92~124A of welding current, 16.7~19.7V of weldingvoltage, heat input is 6.44~8.6kJ/cm, and speed of welding is 12~13cm/min, and zero defect inside weld seam of the present invention, welding deformation is small, and weldquality is higher.
Description
Technical field
The invention belongs to welding technology fields more particularly to a kind of thin plate high-strength steel double sides double arc to connect method and application.
Background technique
The docking welding of thin plate high-strength steel is the important link in steel construction production manufacturing process, common welding method
There are front welding method, double sides double arc etc., front welding method back chipping process is complex, and welding process need to expend a large amount of people
Power, carbon-point, electric energy, weld metal loading is big, and production efficiency is low, time-consuming, consumption cost.
Double sides double arc welding steel is two-sided, and twin arc is synchronous while heating, and forms a common molten bath, welding process
Influence factor is numerous, complex process, and thermal weld stress is insufficient or heating location is inaccurate, and groove root is also easy to produce incomplete fusion, unmelted
Saturating phenomenon influences connector carrying, and thermal weld stress is excessive, and groove root is burnt, and easily causes welding line joint burn-through defect, because
Appearance of weld control difficulty is larger when this connects thin plate high-strength steel using double sides double arc.
Summary of the invention
Technical problem to be solved by the present invention lies in: when double sides double arc connects thin plate high-strength steel, appearance of weld is difficult to control
System provides a kind of thin plate high-strength steel double sides double arc and connects method and application.
The present invention is that solution above-mentioned technical problem, the present invention include that a kind of thin plate high-strength steel is double by the following technical programs
Face twin arc welding connects method, includes the following steps:
(1) X-type groove is made in workpiece welding position: using flame-cutting by work pieces process Butt Assembling at X-type slope
Mouthful, the root face controls groove gap and unfitness of butt joint having a size of 0~2mm, and the groove then completed to docking is determined
Position weldering, tack welding welding current 120A, weldingvoltage 10V；
(2) two-sided double arc backing weldings are carried out: using argon tungsten-arc welding, are welded simultaneously using front, two, back side welding gun
It connects, welding gun spacing is 30~50mm, and protective gas is Ar gas, and Ar gas purity is 99.999%, and front, back side welding current are
88~135A, weldingvoltage are 9.6~12.1V, and heat input is 5.12~20.31kJ/cm, and speed of welding is 4~
9cm/min；
(3) two-sided double arc cosmetic weldings are carried out: using consumable electrode metal active gas arc welding, uses 1.0 solid welding wire of Φ
It is welded, protective gas is the Ar gas and CO that percent by volume is 82%:18%2Mixed gas, front, the back side welding electricity
Stream is 92~124A, and weldingvoltage is 16.7~19.7V, and heat input is 6.44~8.6kJ/cm, one layer of front welding
Afterwards, back side welding is carried out, the back side carries out face bonding after welding one layer and connects, and the positive back side is welded alternately, until positive sealing run
Until being fully filled with.
The X-type bevel angle is 80 °~90 °, and groove gap is 2~5mm.
Two-sided double arc backing welding shield gas flow rates are 20L/min.
Two-sided double arc cosmetic welding shield gas flow rates are 10L/min, and speed of welding is 12~13cm/min.
The thin plate high-strength steel with a thickness of 6~8mm, yield strength is 550~590MPa.
A kind of thin plate high-strength steel double sides double arc connects method 8mm is thick, the application on 590MPa grades of thin plate high-strength steel.
The present invention has the advantage that welding procedure of the present invention is suitable for compared with prior art, and molten bath volume is moderate when welding,
Appearance of weld is easily controllable, face of weld uniform in shaping, and Forming Quality is good；The abundant penetration of weld material, internal zero defect, weldering
Connect deformation it is small, weldquality is higher.
Detailed description of the invention
Fig. 1 is X-type groove schematic diagram；
Fig. 2 is the two-sided double arc bottoming welding line photos of thin plate high-strength steel that groove gap is 2mm；
Fig. 3 is the two-sided double arc bottoming welding line photos of thin plate high-strength steel that groove gap is 5mm；
Fig. 4 is the two-sided double arc capping welding line photos of thin plate high-strength steel that groove gap is 5mm.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
Welding is implemented using double sides double arc connection to a thickness of 8mm, the thin plate high-strength steel that yield strength is 590MPa, first
Steel plate is made to X-type welding groove as shown in Figure 1, bevel angle is 90 °, and groove gap 2mm then carries out tack welding,
Tack welding welding current 120A, weldingvoltage 10V；
Then backing welding is carried out using argon tungsten-arc welding, is welded simultaneously using front, two, back side welding gun, two sides weldering
Rifle spacing is 30mm, and protective gas is Ar gas, and Ar gas purity is 99.999%, gas flow 20L/min, front welding current
120A, weldingvoltage 11V, heat input 12.3kJ/cm, speed of welding 6.4cm/min, back side welding current 90A, weldingvoltage
10.1V, heat input 7.2kJ/cm, speed of welding 7.5cm/min；
Cosmetic welding finally is carried out using consumable electrode metal active gas arc welding, cosmetic welding protective gas is Ar gas and CO2
Mixed gas, the percent by volume of the two is 82%:18%, gas flow 10L/min, front welding current 124A, weldering
Connect voltage 16.9V, heat input 8.12kJ/cm, speed of welding 15.5cm/min, back side welding current 124A, weldingvoltage
16.9V, heat input 8.06kJ/cm, speed of welding 13cm/min after one layer of front welding, carry out back side welding, back side weldering
It carries out face bonding after connecing one layer to connect, the positive back side is welded alternately, until positive sealing run is fully filled with.Weldering is completed in welding
Seam photo such as Fig. 2, face of weld uniform in shaping, Forming Quality are good；The abundant penetration of weld material, internal zero defect, welding become
Shape is small, and weldquality is higher.
Embodiment 2
Welding is implemented using double sides double arc connection to a thickness of 7mm, the thin plate high-strength steel that yield strength is 580MPa, first
X-type welding groove is made in steel plate, bevel angle is 90 °, groove gap 5mm, then carries out tack welding, tack welding welding electricity
Flow 120A, weldingvoltage 10V；
Then backing welding is carried out using argon tungsten-arc welding, is welded simultaneously using front, two, back side welding gun, two sides weldering
Rifle spacing is 40mm, and protective gas is Ar gas, and Ar gas purity is 99.999%, gas flow 20L/min, front welding current
128A, weldingvoltage 12.1V, heat input 20.31kJ/cm, speed of welding 4.5cm/min, back side welding current 105A, welding electricity
Press 10.9V, speed of welding 6.8cm/min, thermal weld stress 10.1kJ/cm；
Cosmetic welding finally is carried out using consumable electrode metal active gas arc welding, cosmetic welding protective gas is Ar gas and CO2
Mixed gas, the percent by volume of the two is 82%:18%, gas flow 10L/min, front welding current 120A, weldering
Voltage 16.7V, speed of welding 12cm/min, heat input 8.6kJ/cm, back side welding current 120A are met, weldingvoltage is
16.7V, speed of welding 12.7cm/min, heat input 8.2kJ/cm after one layer of front welding, carry out back side welding, back side weldering
It carries out face bonding after connecing one layer to connect, the positive back side is welded alternately, until positive sealing run is fully filled with.Backing welding and lid
Plate welding line photo such as Fig. 3,4, backing welding face of weld smoothly transits, pore-free, and the molding of cosmetic welding face of weld is smooth, with mother
Material fusion is good.
The sample of embodiment 1,2 is used and visually carries out defects detection with X-ray detection mode Welded Joints, judges to weld
Whether seam surface has the surface defects such as crackle, undercut and slag inclusion, inside X-ray detectoscope detection weld seam, judges in weld seam
Whether portion has the defects of incomplete fusion.It the results are shown in Table 1.
The flaw detection grading of 1. welding point of table
| Sample | Flaw detection mode | Defect | Weldquality |
| Embodiment 1 | X-ray | Nothing | Ι grades |
| Embodiment 2 | X-ray | Nothing | Ι grades |
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of thin plate high-strength steel double sides double arc connects method, which comprises the steps of:
(1) X-type groove is made in workpiece welding position: using flame-cutting by work pieces process Butt Assembling at X-type groove, institute
The root face stated controls groove gap and unfitness of butt joint having a size of 0~2mm, then carries out tack welding to the groove that docking is completed,
Tack welding welding current 120A, weldingvoltage 10V；
(2) two-sided double arc backing weldings are carried out: using argon tungsten-arc welding, two welding guns of front and back are welded simultaneously, welding gun
Spacing is 30~50mm, and protective gas is Ar gas, and Ar gas purity is 99.999%, front, back side welding current be 88~
135A, weldingvoltage are 9.6~12.1V, and heat input is 5.12~20.31kJ/cm, and speed of welding is 4~9cm/
min；
(3) two-sided double arc cosmetic weldings are carried out: using consumable electrode metal active gas arc welding, are carried out using 1.0 solid welding wire of Φ
Welding, protective gas is the Ar gas and CO that percent by volume is 82%:18%2Mixed gas, front, back side welding current it is equal
For 92~124A, weldingvoltage is 16.7~19.7V, and heat input is 6.44~8.6kJ/cm, after one layer of front welding, into
The welding of the row back side, the back side carry out face bonding after welding one layer and connect, and the positive back side is welded alternately, until positive sealing run is filled out completely
Until full.
2. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(1) X-type bevel angle is 80 °~90 °.
3. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(1) groove gap is 2~5mm.
4. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(2) the Ar gas gas flow of two-sided double arc backing weldings is 20L/min.
5. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(2) two-sided double arc bottoming welding wires are the solid welding wire of Φ 3.2mm.
6. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(3) two-sided double arc cosmetic welding shield gas flow rates are 10L/min.
7. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the step
(3) two-sided double arc cosmetic welding speeds of welding are 12~13cm/min.
8. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the thin plate
High-strength steel yield strength is 550~590MPa.
9. a kind of thin plate high-strength steel double sides double arc according to claim 1 connects method, which is characterized in that the thin plate
High-strength steel with a thickness of 6~8mm.
10. a kind of a kind of thin plate high-strength steel double sides double arc as described in any one of claims 1 to 9 connect method 8mm it is thick,
Application on 590MPa grades of thin plate high-strength steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613805.8A CN109514052A (en) | 2018-12-27 | 2018-12-27 | A kind of high-strength steel welding method of thin plate and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811613805.8A CN109514052A (en) | 2018-12-27 | 2018-12-27 | A kind of high-strength steel welding method of thin plate and application |
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| CN109514052A true CN109514052A (en) | 2019-03-26 |
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| CN201811613805.8A Pending CN109514052A (en) | 2018-12-27 | 2018-12-27 | A kind of high-strength steel welding method of thin plate and application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039153A (en) * | 2019-04-30 | 2019-07-23 | 山东能源重装集团恒图科技有限公司 | A kind of welding method suitable for cut deal double-faced forming |
| CN111069746A (en) * | 2019-12-27 | 2020-04-28 | 武汉武船计量试验有限公司 | Double-sided double-arc gas shielded welding process for ultrahigh-strength steel |
| CN112453656A (en) * | 2020-10-09 | 2021-03-09 | 江阴兴澄特种钢铁有限公司 | Welding method of thin-wall thick high-strength steel plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039153A (en) * | 2019-04-30 | 2019-07-23 | 山东能源重装集团恒图科技有限公司 | A kind of welding method suitable for cut deal double-faced forming |
| CN110039153B (en) * | 2019-04-30 | 2021-03-12 | 山东能源重装集团恒图科技有限公司 | Welding method suitable for double-sided forming of medium plate |
| CN111069746A (en) * | 2019-12-27 | 2020-04-28 | 武汉武船计量试验有限公司 | Double-sided double-arc gas shielded welding process for ultrahigh-strength steel |
| CN111069746B (en) * | 2019-12-27 | 2022-01-11 | 武汉武船计量试验有限公司 | Double-sided double-arc gas shielded welding process for ultrahigh-strength steel |
| CN112453656A (en) * | 2020-10-09 | 2021-03-09 | 江阴兴澄特种钢铁有限公司 | Welding method of thin-wall thick high-strength steel plate |
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Application publication date: 20190326 |