CN109909584A - A kind of 2205 dual phase steel automatic welding methods - Google Patents
A kind of 2205 dual phase steel automatic welding methods Download PDFInfo
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- CN109909584A CN109909584A CN201910268624.4A CN201910268624A CN109909584A CN 109909584 A CN109909584 A CN 109909584A CN 201910268624 A CN201910268624 A CN 201910268624A CN 109909584 A CN109909584 A CN 109909584A
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Abstract
The present invention relates to a kind of 2205 dual phase steel automatic welding methods, this method refers to that PAW/TIG rush-harvesting and rush-planting switching longitudinal joint automatic welding system and PAW/TIG rush-harvesting and rush-planting switching circumferential weld automatic welding system, which is respectively adopted, carries out cylinder longitudinal joint and girth welding.When the plate thickness of 2205 two-phase stainless steel cylinders is 4 ~ 10mm, using type I groove pattern, groove plane is straight flange with straight flange docking mode, is not filled silk with automatic PAW from melting welding 1 time first, then switches argonaut welding and fills silk capping 1 time；When the plate thickness of 2205 two-phase stainless steel cylinders is 10 ~ 15mm, using breeches joint slope type, bevel angle be 75 ° and it is unilateral be 37.5 °, root face 6mm, do not filled silk with automatic PAW from after melting welding 1 time, it is full to switch automatic GTAW capping 2 ~ 4 times welderings that fill silk.The present invention does not need back gouging, realizes automatic welding, and welding production efficiency is high, and improves class to equipment total quality without splashing, without dust, without arc light, noiseless, weld appearance neat appearance in welding process.
Description
Technical field
The present invention relates to a kind of welding methods, more particularly to a kind of 2205 dual phase steel automatic welding methods.
Background technique
2205 Duplex Stainless Steel Equipments are widely used in polyolefin equipment manufacture industry, especially in polypropylene plant
Core equipment steamer, fluidized bed dryer, steamer cyclone separator and drier cyclone separator, due to containing in medium
A large amount of chloride ions, all materials with media contact of equipment are all using 2205 dual phase steels.Since polyolefin industry is to 2205 pairs
Phase steel weld seam chemical component, mechanical performance and corrosion resistance require it is stringenter, therefore, the sector traditional welding method at present
It is stick electrode weldering and argon arc welding.And in order to ensure quality of weld joint, small specification can only be selected to weld pressure-bearing weld seam, Φ
4.0 mm or more welding rods are all it is not recommended that use；And manual welding needs back gouging, generally manually electric grinding, working environment
It is very poor.Simultaneously existing traditional-handwork weldering welding technique always exist low large labor intensity, production efficiency, arc light dust pollution and
The disadvantages of weld appearance is of poor quality.
Summary of the invention
Technical problem to be solved by the invention is to provide 2205 high dual phase steel automatic welding sides of a kind of welding efficiency
Method.
To solve the above problems, a kind of 2205 dual phase steel automatic welding method of the present invention, it is characterised in that: should
Method, which refers to, is respectively adopted PAW/TIG rush-harvesting and rush-planting switching longitudinal joint automatic welding system and the switching circumferential weld automation of PAW/TIG rush-harvesting and rush-planting
Welding system carries out cylinder longitudinal joint and girth welding；When the plate thickness of 2205 two-phase stainless steel cylinders is 4 ~ 10mm, using I type slope
Shape of the mouth as one speaks formula, groove plane are straight flange with straight flange docking mode, are not filled silk with automatic PAW from melting welding 1 time first, then switch automatic argon arc
Weldering fills silk capping 1 time；When the plate thickness of 2205 two-phase stainless steel cylinders is 10 ~ 15mm, using breeches joint slope type,
Bevel angle be 75 ° and it is unilateral be 37.5 °, root face 6mm, do not filled silk with automatic PAW from after melting welding 1 time, switch automatic GTAW and fill out
2 ~ 4 times welderings in wire cover face are full.
When the PAW/TIG rush-harvesting and rush-planting switching longitudinal joint automatic welding system carries out longitudinal seam welding, PAW welding parameter is electric current
It is 26 ~ 27V, speed of welding 115mm/min, using front and back two-sided gas shield and protection for 235 ~ 240A, voltage
Gas flow is 4 ~ 7L/min；GTAW welding parameter is welding wire model ER2209, gage of wire Φ 1.2, electric current be 280 ~ 290A,
Voltage is 14 ~ 15V, speed of welding 115mm/min, wire feed rate 1500mm/min, shield gas flow rate are 12 ~ 15L/
min。
When the PAW/TIG rush-harvesting and rush-planting switching circumferential weld automatic welding system carries out girth welding, PAW welding parameter is electric current
It is 26 ~ 27V, speed of welding 145mm/min, using front and back two-sided gas shield and protection for 245 ~ 250A, voltage
Gas flow is 4 ~ 7L/min；GTAW welding parameter be welding wire model ER2209, gage of wire Φ 1.2, electric current be 280 ~ 290A,
Voltage is 13 ~ 14V, speed of welding 145mm/min, wire feed rate 1500mm/min, shield gas flow rate are 12 ~ 15L/
min。
The protective gas refers to the argon gas that purity is greater than 99%.
Compared with the prior art, the present invention has the following advantages:
1, the present invention utilizes PAW/TIG(plasma arc welding (PAW)/argon arc welding) rush-harvesting and rush-planting switching automatic welding system, pass through welding procedure
2205 dual phase steels (4mm ~ 15mm) circumferential weld and longitudinal joint automatic welding are realized in control.Entire welding process computer state modulator, from
Dynamic wire feed, the shield light shield masking of welding arc light, station on-line industry TV monitoring and controlling welding pool, welding are whole without splashing, nothing
Dust, without arc light, noiseless, not only realize automatic welding, and weld appearance neat appearance, equipment total quality promoted
Class.
2, the present invention does not need back gouging, dramatically reduces workload, and welding production efficiency improves 4 than manual welding
Times, while saving wlding 70 ~ 80%.
3, using the method for the present invention, quality of weld joint is good, and II grade of qualification of weld seam whole ray detection, equipment is integrally penetrated
Line detection statistics qualification rate reaches 95% or more；Weld seam chemical component and mechanical performance detection all comply with standard, and room temperature draws high intensity
Qualification is not split in 780MPa, bending, is detected every component with spectrum analysis PMI and is met Standard of steel, the important nitrogen content of dual phase steel
Up to 0.16%, ferrite content 40 ~ 50% is complied with standard；Pass through Huey test GB4334 E method, pitting corrosion test 6%
FeCl3Solution, 40 ° without spot corrosion qualification.
Specific embodiment
A kind of 2205 dual phase steel automatic welding methods, this method refer to: PAW/TIG rush-harvesting and rush-planting switching longitudinal joint is respectively adopted certainly
Dynamicization welding system and PAW/TIG rush-harvesting and rush-planting switching circumferential weld automatic welding system carry out cylinder longitudinal joint and girth welding.
When the plate thickness of 2205 two-phase stainless steel cylinders is 4 ~ 10mm, using type I groove pattern, groove plane is straight flange with straight
Side docking mode, first with automatic PAW(plasma arc welding (PAW)) it does not fill silk from melting welding 1 time, then switch argonaut welding silk filling capping 1
All over.
When the plate thickness of 2205 two-phase stainless steel cylinders is 10 ~ 15mm, using breeches joint slope type, bevel angle is
75 ° and it is unilateral be 37.5 °, root face 6mm, with automatic PAW(plasma arc) do not fill silk from after melting welding 1 time, switch automatic GTAW
(argon arc welding) fills silk capping 2 ~ 4 times welderings completely.
When PAW/TIG rush-harvesting and rush-planting switches the progress longitudinal seam welding of longitudinal joint automatic welding system, PAW(plasma arc welding (PAW)) welding ginseng
Number be electric current be 235 ~ 240A, voltage is 26 ~ 27V, speed of welding 115mm/min, using front and back two-sided gas guarantor
Shield and shield gas flow rate are 4 ~ 7L/min；GTAW(argon arc welding) welding parameter be welding wire model ER2209, gage of wire Φ
1.2, electric current is 280 ~ 290A, voltage is 14 ~ 15V, speed of welding 115mm/min, wire feed rate 1500mm/min, protection
Gas flow is 12 ~ 15L/min.
When PAW/TIG rush-harvesting and rush-planting switches the progress girth welding of circumferential weld automatic welding system, PAW(plasma arc welding (PAW)) welding ginseng
Number be electric current be 245 ~ 250A, voltage is 26 ~ 27V, speed of welding 145mm/min, using front and back two-sided gas guarantor
Shield and shield gas flow rate are 4 ~ 7L/min；GTAW(argon arc welding) welding parameter be welding wire model ER2209, gage of wire Φ
1.2, electric current is 280 ~ 290A, voltage is 13 ~ 14V, speed of welding 145mm/min, wire feed rate 1500mm/min, protection
Gas flow is 12 ~ 15L/min.
Used protective gas refers to the argon gas that purity is greater than 99%.
For any plate thickness, longitudinal joint and circumferential weld all take gapless, staggered edge free group pair as far as possible, and group is less than misalignment
0.5 mm, group are less than 0.5mm to gap, are positioned with argon arc welding spot welding.Weld preceding physics and chemical method trimming two sides
(contain groove) greasy dirt, water, rust and impurity within the scope of 30mm, makes steel surface expose metallic luster.
Entire welding process computer state modulator, automatic feeding, the shield light shield masking of welding arc light, station on-line industry
TV monitoring and controlling welding pool.
Claims (4)
1. a kind of 2205 dual phase steel automatic welding methods, it is characterised in that: this method refers to that PAW/TIG rush-harvesting and rush-planting, which is respectively adopted, to be cut
It changes longitudinal joint automatic welding system and PAW/TIG rush-harvesting and rush-planting switching circumferential weld automatic welding system carries out cylinder longitudinal joint and circular seam welding
It connects；When the plate thickness of 2205 two-phase stainless steel cylinders is 4 ~ 10mm, using type I groove pattern, groove plane is straight flange with straight flange pair
Mode is connect, is not filled silk with automatic PAW from melting welding 1 time first, then switches argonaut welding and fills silk capping 1 time；When 2205 pairs
When the plate thickness of phase stainless steel cylinder is 10 ~ 15mm, using breeches joint slope type, bevel angle is 75 ° and unilateral is
37.5 °, root face 6mm are not filled silk with automatic PAW from after melting welding 1 time, are switched automatic GTAW(and are filled silk capping 2 ~ 4 times welderings completely.
2. 2205 dual phase steel automatic welding methods of one kind as described in claim 1, it is characterised in that: the PAW/TIG is bis-
Rifle switch longitudinal joint automatic welding system carry out longitudinal seam welding when, PAW welding parameter be electric current be 235 ~ 240A, voltage be 26 ~
27V, speed of welding 115mm/min, use front and back two-sided gas shield and shield gas flow rate for 4 ~ 7L/min；
GTAW welding parameter is welding wire model ER2209, gage of wire Φ 1.2, electric current are 280 ~ 290A, voltage is 14 ~ 15V, welding speed
Degree is 115mm/min, wire feed rate 1500mm/min, shield gas flow rate are 12 ~ 15L/min.
3. 2205 dual phase steel automatic welding methods of one kind as described in claim 1, it is characterised in that: the PAW/TIG is bis-
Rifle switch circumferential weld automatic welding system carry out girth welding when, PAW welding parameter be electric current be 245 ~ 250A, voltage be 26 ~
27V, speed of welding 145mm/min, use front and back two-sided gas shield and shield gas flow rate for 4 ~ 7L/min；
GTAW welding parameter is welding wire model ER2209, gage of wire Φ 1.2, and electric current is 280 ~ 290A, voltage is 13 ~ 14V, welding speed
Degree is 145mm/min, wire feed rate 1500mm/min, shield gas flow rate are 12 ~ 15L/min.
4. 2205 dual phase steel automatic welding methods of one kind as claimed in claim 2 or claim 3, it is characterised in that: the protection gas
Body refers to the argon gas that purity is greater than 99%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732468A (en) * | 2021-09-01 | 2021-12-03 | 南京钢铁股份有限公司 | Welding method for thick plates with different specifications of 60mm and above |
| CN114833430A (en) * | 2022-05-23 | 2022-08-02 | 楼蓝科技(江苏)有限公司 | Argon arc welding seam welding method suitable for fillet weld of thin-wall part |
| CN115647532A (en) * | 2022-12-09 | 2023-01-31 | 中车山东风电有限公司 | Tank body welding method of strain-strengthened low-temperature tank box |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732468A (en) * | 2021-09-01 | 2021-12-03 | 南京钢铁股份有限公司 | Welding method for thick plates with different specifications of 60mm and above |
| CN113732468B (en) * | 2021-09-01 | 2023-02-14 | 南京钢铁股份有限公司 | Welding method for thick plates with different specifications of 60mm and above |
| CN114833430A (en) * | 2022-05-23 | 2022-08-02 | 楼蓝科技(江苏)有限公司 | Argon arc welding seam welding method suitable for fillet weld of thin-wall part |
| CN115647532A (en) * | 2022-12-09 | 2023-01-31 | 中车山东风电有限公司 | Tank body welding method of strain-strengthened low-temperature tank box |
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Application publication date: 20190621 |