CN102615404A - Method for synchronously welding two surfaces of stainless steel thick plate - Google Patents
Method for synchronously welding two surfaces of stainless steel thick plate Download PDFInfo
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- CN102615404A CN102615404A CN2012101124854A CN201210112485A CN102615404A CN 102615404 A CN102615404 A CN 102615404A CN 2012101124854 A CN2012101124854 A CN 2012101124854A CN 201210112485 A CN201210112485 A CN 201210112485A CN 102615404 A CN102615404 A CN 102615404A
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Abstract
The invention discloses a method for synchronously welding two surfaces of a stainless steel thick plate, which is mainly used for welded connection of stainless thick plate equipment in the industries of metallurgy, chemical engineering and the like. The method mainly comprises the following steps of: synchronously welding the same welding seam from two surfaces by adopting a filament argon arc welding method under the condition of the same welding equipment, environment and welding condition to ensure that the welding seam is qualified by one step; and forming a method for synchronously welding the two surfaces of the stainless steel thick plate through filament argon arc welding to ensure that the welding seam is qualified by one step. The method has the advantages that: the same welding seam is welded from two surfaces synchronously, the contraction percentages of the two surfaces are the same, leakage points cannot be generated, and the welding seam can be qualified by one step, so that the method is particularly suitable for welding pressure containers.
Description
Technical field
The present invention relates to a kind of stainless steel thick plate welding method, be mainly used in the welding of the stainless steel thick plate equipment of industry thickness 25.0-100 millimeters such as metallurgy, chemical industry; Do not comprise that thickness is less than 25 millimeters stainless sheet steel and the thickness special thick corrosion resistant plate greater than 100 millimeters.
Background technology
In industries such as metallurgy, chemical industry, because corrosion resistant needs, often adopting thickness is that the corrosion resistant plate of 25-100 millimeter is manufactured equipment, in the equipment installation process, need weld stainless steel.Present welding method is from the one side welding, or welding one side earlier is again from the another side butt welding.The stainless steel thick plate welding is different with general steel plate, because of thickness of slab, when one side is welded, can be easy to produce breakthrough because of the shrinkage factor on two sides is different, and for pressure vessel, this is definitely unallowed.
Summary of the invention
For solving the problems of the technologies described above, the present invention provides a kind of stainless steel thick plate two-sided synchronous welding method.
The present invention realizes with following technical scheme: the two-sided synchronous welding method of stainless steel thick plate; Adopt the welding method of filament argon arc welding; Under the identical situation of welding equipment, environment and welding condition, same weld seam is welded from the two sides simultaneously synchronously, make weld seam once qualified; Form the two-sided synchronous welding method of stainless steel thick plate filament argon arc welding; Described welding condition comprises:
(1) thickness of stainless steel thick plate member is the 25-100 millimeter, opens V-butt on the joint two sides of stainless steel thick plate member, fit-up gap 1-3mm; The employing of joint end face is machined into smooth smooth, greasy dirt and moisture in the preweld cleaning joint end face 3-5 millimeter scope, and dry;
(2) adopt the two-sided synchronous welding method welding of filament argon arc welding; Described welding condition is: the stainless steel thick plate member erect, stayed the fit-up gap, and fixing, select welding wire; Along the bottom-up welding of weld seam,
(3) postwelding inspection and trimming.
The invention has the beneficial effects as follows: same weld seam is welded from the two sides simultaneously synchronously, and the two sides shrinkage factor is identical, can not produce breakthrough, can guarantee that weld seam is once qualified, is specially adapted to the welding of pressure vessel.
The specific embodiment
Embodiment 1,
The air separation column construction of the big oxygen station engineering of a domestic tame steel mill, air separation column is made by the corrosion resistant plate of 25mm.
Welding equipment all is market purchasing, and corollary equipment comprises: the source of welding current, welding machine, wire reel, control device, cable machinery etc.
(1) source of welding current is CR-H800 type direct current flat characteristic power supply 1 cover; Input voltage: 3 phases, 380 volts, 50/Hz; Specified input capacity: 60kVA; Output-current rating: 800A; Output voltage range: 24-42V; Floating voltage 75V; Rated duty cycle: 100%, the SCR control mode is adopted in output;
(2) welding machine has TM-90-7.2 type riser 1 cover, WF-100-6.5 type wire feeder 1 cover, suspending rod 1 cover and T825 type welding electrode 1 cover; The rising motor is a direct current 90W electromagnetic motor, the rate of climb: the 12-120 mm/min, and the rate of climb is carried out the variable control of constant speed with controllable silicon; The wire feed motor is a direct current 100W electromagnetic motor, and wire feed rate is also carried out the variable control of constant speed with controllable silicon; The ignition tip position adjustment range be front and back ± 15 millimeter and about ± 10 millimeters;
(3) wire reel pushes away a machine 1 cover by WR-75P type wire reel 1 cover and WF-50-10 type and forms; Wire feed rate 0-10 rice/minute, the wire feed motor is a direct current 50W electromagnetic motor, wire feed control adopts the output of deciding of series resistance to control;
(4) control device is made up of control cabinet 1 cover, relay and control case 1 cover and control box 1 cover;
(5) cable comprises that welding is overlapped with electro-insulating rubber cable 1 and control is overlapped with cable 1;
Concrete welding method: the vertical position welding welding, welding point adopts two-sided double V-groove, and the fit-up gap is 3 millimeters; Bevel angle is 45 °, on the two sides that is soldered equipment, adopts the welding method of identical filament argon arc welding by the suitable welder of two weld horizontal; With identical speed of welding same weld seam is welded simultaneously, 5 millimeters of gage of wires, welding current are 600A; Weldingvoltage is 40V, and speed of welding is 15 mm/min.
Postwelding detects, ne-leakage point, an acceptance(check) of weld seam.
Claims (2)
1. the two-sided synchronous welding method of stainless steel thick plate is characterized in that: adopt the welding method of filament argon arc welding, under the identical situation of welding equipment, environment and welding condition, same weld seam is welded from the two sides simultaneously synchronously, make weld seam once qualified; Form the two-sided synchronous welding method of stainless steel thick plate filament argon arc welding; Described welding condition comprises:
(1) thickness of stainless steel thick plate member is the 25-100 millimeter, opens V-butt on the joint two sides of stainless steel thick plate member, fit-up gap 1-3mm; The employing of joint end face is machined into smooth smooth, greasy dirt and moisture in the preweld cleaning joint end face 3-5 millimeter scope, and dry;
(2) adopt the two-sided synchronous welding method welding of filament argon arc welding; Described welding condition is: the stainless steel thick plate member erect, stayed the fit-up gap, and fixing, select welding wire; Along the bottom-up welding of weld seam,
(3) postwelding inspection and trimming.
2. the two-sided synchronous welding method of stainless steel thick plate according to claim 1 is characterized in that: described bevel angle is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112485.4A CN102615404B (en) | 2012-04-17 | 2012-04-17 | Method for synchronously welding two surfaces of stainless steel thick plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112485.4A CN102615404B (en) | 2012-04-17 | 2012-04-17 | Method for synchronously welding two surfaces of stainless steel thick plate |
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| Publication Number | Publication Date |
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| CN102615404A true CN102615404A (en) | 2012-08-01 |
| CN102615404B CN102615404B (en) | 2014-01-22 |
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| CN201210112485.4A Active CN102615404B (en) | 2012-04-17 | 2012-04-17 | Method for synchronously welding two surfaces of stainless steel thick plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896396A (en) * | 2012-10-16 | 2013-01-30 | 浙江精工钢结构有限公司 | Double-side double-arc single-pool synchronous same-direction welding forming method and groove type |
| CN105189011A (en) * | 2013-02-06 | 2015-12-23 | 新日铁住金株式会社 | Multi-electrode electrogas arc welding method for thick steel plates and multi-electrode electrogas arc circumferential welding method for steel pipes |
| CN106180963A (en) * | 2015-04-30 | 2016-12-07 | 江南造船(集团)有限责任公司 | A kind of two-sided pair of GMAW welding method |
| CN106425037A (en) * | 2016-10-13 | 2017-02-22 | 广西大学 | Welding method for special steel sheets for heat exchanger |
| CN106825872A (en) * | 2017-03-08 | 2017-06-13 | 武汉天高熔接股份有限公司 | Hardware positive and negative synchronization full penetration technique |
| CN112276387A (en) * | 2020-09-03 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Double-side welding process method for dual-phase steel explosion-proof wall |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896396A (en) * | 2012-10-16 | 2013-01-30 | 浙江精工钢结构有限公司 | Double-side double-arc single-pool synchronous same-direction welding forming method and groove type |
| CN105189011A (en) * | 2013-02-06 | 2015-12-23 | 新日铁住金株式会社 | Multi-electrode electrogas arc welding method for thick steel plates and multi-electrode electrogas arc circumferential welding method for steel pipes |
| CN105189011B (en) * | 2013-02-06 | 2018-03-27 | 新日铁住金株式会社 | The multi-electrode pneumoelectric soldering method of steel plate and the multi-electrode pneumoelectric circumferential weld soldering method of steel pipe |
| CN106180963A (en) * | 2015-04-30 | 2016-12-07 | 江南造船(集团)有限责任公司 | A kind of two-sided pair of GMAW welding method |
| CN106425037A (en) * | 2016-10-13 | 2017-02-22 | 广西大学 | Welding method for special steel sheets for heat exchanger |
| CN106825872A (en) * | 2017-03-08 | 2017-06-13 | 武汉天高熔接股份有限公司 | Hardware positive and negative synchronization full penetration technique |
| CN112276387A (en) * | 2020-09-03 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Double-side welding process method for dual-phase steel explosion-proof wall |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102615404B (en) | 2014-01-22 |
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Effective date of registration: 20181206 Address after: 233010 Pioneering Building 316, Huineng Small and Micro Enterprises Pioneering Center, 1750 Shengli West Road, Yuhui District, Bengbu City, Anhui Province Patentee after: Bengbu Dingrong Science and Technology Information Consulting Co., Ltd. Address before: No. 26, Xue Yuan Road, Quanshan District, Xuzhou, Jiangsu Patentee before: Jiangsu Institute of Architectural Technology |
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Effective date of registration: 20190115 Address after: No. 26, Xue Yuan Road, Quanshan District, Xuzhou, Jiangsu Patentee after: Jiangsu Institute of Architectural Technology Address before: 233010 Pioneering Building 316, Huineng Small and Micro Enterprises Pioneering Center, 1750 Shengli West Road, Yuhui District, Bengbu City, Anhui Province Patentee before: Bengbu Dingrong Science and Technology Information Consulting Co., Ltd. |