CN102990207A - Method for welding weather-proof steel plates - Google Patents
Method for welding weather-proof steel plates Download PDFInfo
- Publication number
- CN102990207A CN102990207A CN2012105264238A CN201210526423A CN102990207A CN 102990207 A CN102990207 A CN 102990207A CN 2012105264238 A CN2012105264238 A CN 2012105264238A CN 201210526423 A CN201210526423 A CN 201210526423A CN 102990207 A CN102990207 A CN 102990207A
- Authority
- CN
- China
- Prior art keywords
- welding
- steel sheet
- weathering steel
- sheet material
- described step
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention provides a method for welding weather-proof steel plates. The method comprises the following steps of: 1, performing backing welding on a welded joint between two weather-proof steel plates by argon tungsten-arc welding, forming a backing welding layer at the bottom of the welded joint, and filling a welding wire during welding; 2, performing filling welding on the welded joint by consumable electrode mixed gas arc welding, forming a filling layer on the backing welding layer, and filling the welding wire during welding; 3, performing cover surface welding on two sides of the welded joint by the consumable electrode mixed gas arc welding, forming two cover surface layers on two sides above the filling layer, and filling the welding wire during welding, wherein the two cover surface layers are superposed; and 4, re-fusing welded toes formed between the cover surface layers and the weather-proof steel plates by the argon tungsten-arc welding to form circular welded toes. By the method, stress concentration is reduced, and the welding quality of the weather-proof steel plates is improved.
Description
Technical field
The present invention relates to the sheet material welding field, relate in particular to a kind of welding method of weathering steel sheet material.
Background technology
At present, weathering steel is widely used in the manufacturing of railway locomotive bogie framework, existing welding procedure need to be carried out preheating to cut deal (14mm and above sheet material), and postwelding need to be heat-treated, a large amount of electric energy and kinetic energy have been wasted, and welding preheating and post weld heat treatment can only improve the fusion character of weld seam inside, and concentrate place's performance improvement little for the root of weld, toe of weld iso-stress.Cause the welding quality of weathering steel sheet material in the prior art relatively poor.
Summary of the invention
Technical problem to be solved by this invention is: a kind of welding method of weathering steel sheet material is provided, solves the relatively poor defective of welding quality of weathering steel sheet material in the prior art, realize improving the welding quality of weathering steel sheet material.
The invention provides a kind of welding method of weathering steel sheet material, comprising:
Step 1, employing argon tungsten-arc welding are carried out the bottoming welding to the weld seam between two blocks of weathering steel sheet materials, form bottoming layer, filler wire in the welding process in the bottom of weld seam;
Step 2, employing mixed gas protected consumable-electrode weld butt welded seam are filled welding, form packed layer at the bottoming layer, filler wire in the welding process;
Cover welding is carried out in the both sides of step 3, employing mixed gas protected consumable-electrode weld butt welded seam, and two side positions above packed layer form two capping layers, and two capping layers have the overlay region, filler wire in the welding process;
Step 4, employing argon tungsten-arc welding are melted again to the welding toe that forms between capping layer and the weathering steel sheet material, form round and smooth toe of weld.
The welding method of weathering steel sheet material provided by the invention forms first bottoming layer by adopting tungsten argon arc to be welded in the weld seam, guarantee root of weld penetration, avoids occurring weld seam according to the incomplete fusion defects i.e.cracks occurs, and the stress that effectively reduces the root of weld is concentrated; Adopt again mixed gas protected consumable-electrode weld to form first packed layer and form again the capping layer, because packed layer is formed on the bottoming layer, in the process that forms the bottoming layer with respect to two blocks of weathering steel sheet materials are carried out preheating, improved the fusion character of packed layer, and form the capping layer with overlay region at packed layer, can guarantee that the weld seam mouth at weld seam top is more smooth; At last, adopt argon tungsten-arc welding that welding toe is melted again, with the effective interim form of improving the weld seam welding toe, make toe of weld become rounder and more smooth, reduce stress and concentrate, effectively improve weldquality.
The welding method of aforesaid weathering steel sheet material, the protective gas in described step 1 and the described step 4 adopts 99.99% argon gas; The gaseous mixture that the argon gas of the protective gas employing 80% in described step 2 and the described step 3 and 20% carbon dioxide form.
The welding method of aforesaid weathering steel sheet material, the polarity of electric current adopts straight polarity direct current in described step 1 and the described step 4; The polarity of electric current adopts dc reverse connection in described step 2 and the described step 3.
The welding method of aforesaid weathering steel sheet material also comprises: step 5, the weathering steel sheet material after welding finished carry out bead.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the welding schematic diagram of weathering steel sheet material of the present invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, the welding method of present embodiment weathering steel sheet material comprises:
Step 1, employing argon tungsten-arc welding are carried out the bottoming welding to the weld seam between two blocks of weathering steel sheet materials 1, form bottoming layer 101, filler wire in the welding process in the bottom of weld seam.Concrete; adopt argon tungsten-arc welding to carry out bottoming for waiting steel board 1 butt weld first; welding protection gas adopts 99.99% argon gas; it is the argon arc welding weathering steel welding wire of 2.0mm that welding wire adopts diameter; welding current is 80-100A; current polarity adopts straight polarity direct current, and speed of welding is 2.0-3.0mm/s.Adopt the manual mode that fills silk to carry out in the time of welding, argon tungsten-arc welding has that appearance of weld is good, and welding quality is high, adopts argon tungsten-arc welding can guarantee root of weld penetration to backing welding, stops root of weld generation incomplete fusion defects i.e.cracks.
Step 2, employing mixed gas protected consumable-electrode weld butt welded seam are filled welding, form packed layers 102, filler wire in the welding process at bottoming layer 101.Concrete, packed layer 102 welding currents are 170-190A, weldingvoltage is 22-24V; the carbon dioxide of the argon gas of protective gas employing 80%+20%; current polarity adopts dc reverse connection, and speed of welding is 3.5-4.0mm/s, and it is the plate-like weathering steel welding wire of 1.2mm that welding wire adopts diameter.Adopt the gas metal-arc welding welding efficiency high, need not to carry out scarfing cinder, and step 1 argon tungsten-arc welding is equivalent to weathering steel sheet material 1 has been carried out preheating, improved the fusion character of packed layer 102.
Cover welding is carried out in the both sides of step 3, employing mixed gas protected consumable-electrode weld butt welded seam, and two side positions above packed layer 102 form two capping layers 103,104, and capping layer 103 and capping layer 104 have the overlay region, filler wire in the welding process.Concrete, capping layer 103,104 welding currents are 190-210A, and weldingvoltage is 24-26V, and speed of welding is 3.0-3.5mm/s, current polarity, welding wire is identical with packed layer 102 with protective gas.Two capping layers 103 and capping layer 103 have the overlay region, can make the surface of weld seam more smooth.
Step 4, adopt argon tungsten-arc welding to capping layer 103,104 with weathering steel sheet material 1 between toe of weld 105 places of formation again melt, form round and smooth toe of weld 105.Concrete, adopt argon tungsten-arc welding, filler wire, but toe of weld 105 places are not carried out refuse, to undercut, appearance of weld is bad etc., and defective is repaired.Adopt argon tungsten-arc welding can well improve weld seam toe of weld 105 place's interim forms, so that toe of weld 105 places become round and smooth, reduce stress and concentrate.
Step 5, the weathering steel sheet material after welding finished carry out bead.Concrete, after welding is finished, can carry out bead to workpiece, the shot-peening time is half an hour, the shot flow of shot-peening is not less than 100Kg/min, so that surface of the work forms one deck compression, improves fatigue strength.
The welding method of present embodiment weathering steel sheet material forms first bottoming layer by adopting tungsten argon arc to be welded in the weld seam, guarantee root of weld penetration, avoids occurring weld seam according to the incomplete fusion defects i.e.cracks occurs, and the stress that effectively reduces the root of weld is concentrated; Adopt again mixed gas protected consumable-electrode weld to form first packed layer and form again the capping layer, because packed layer is formed on the bottoming layer, in the process that forms the bottoming layer with respect to two blocks of weathering steel sheet materials are carried out preheating, improved the fusion character of packed layer, and form the capping layer with overlay region at packed layer, can guarantee that the weld seam mouth at weld seam top is more smooth; At last, adopt argon tungsten-arc welding that welding toe is melted again, with the effective interim form of improving the weld seam welding toe, make toe of weld become rounder and more smooth, reduce stress and concentrate, effectively improve weldquality.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. the welding method of a weathering steel sheet material is characterized in that, comprising:
Step 1, employing argon tungsten-arc welding are carried out the bottoming welding to the weld seam between two blocks of weathering steel sheet materials, form bottoming layer, filler wire in the welding process in the bottom of weld seam;
Step 2, employing mixed gas protected consumable-electrode weld butt welded seam are filled welding, form packed layer at the bottoming layer, filler wire in the welding process;
Cover welding is carried out in the both sides of step 3, employing mixed gas protected consumable-electrode weld butt welded seam, and two side positions above packed layer form two capping layers, and two capping layers have the overlay region, filler wire in the welding process;
Step 4, employing argon tungsten-arc welding are melted again to the welding toe that forms between capping layer and the weathering steel sheet material, form round and smooth toe of weld.
2. the welding method of weathering steel sheet material according to claim 1 is characterized in that, the protective gas in described step 1 and the described step 4 adopts 99.99% argon gas; The gaseous mixture that the argon gas of the protective gas employing 80% in described step 2 and the described step 3 and 20% carbon dioxide form.
3. the welding method of weathering steel sheet material according to claim 1 is characterized in that, the polarity of electric current adopts straight polarity direct current in described step 1 and the described step 4; The polarity of electric current adopts dc reverse connection in described step 2 and the described step 3.
4. the welding method of arbitrary described weathering steel sheet material is characterized in that according to claim 1-3, also comprises:
Step 5, the weathering steel sheet material after welding finished carry out bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105264238A CN102990207A (en) | 2012-12-10 | 2012-12-10 | Method for welding weather-proof steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105264238A CN102990207A (en) | 2012-12-10 | 2012-12-10 | Method for welding weather-proof steel plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102990207A true CN102990207A (en) | 2013-03-27 |
Family
ID=47919610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105264238A Pending CN102990207A (en) | 2012-12-10 | 2012-12-10 | Method for welding weather-proof steel plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102990207A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866628A (en) * | 2016-09-26 | 2018-04-03 | 首都航天机械公司 | Improve the welding method of ageing strengthening aluminum alloy melting plumb joint bearing capacity |
| CN110076425A (en) * | 2019-04-08 | 2019-08-02 | 河钢股份有限公司 | A kind of composite welds and its welding method of weathering steel |
| CN110520240A (en) * | 2017-06-07 | 2019-11-29 | 宝马股份公司 | For manufacturing the method and component composition part of component composition part |
| CN111774702A (en) * | 2020-07-08 | 2020-10-16 | 北京地铁车辆装备有限公司 | Welding method |
| CN112222573A (en) * | 2020-10-20 | 2021-01-15 | 甘肃一安建设科技集团有限公司 | Welding method for weathering resistant steel Q500QENH |
| CN113172311A (en) * | 2021-04-30 | 2021-07-27 | 中国石油天然气集团有限公司 | Welding method for CT80 steel-grade coiled tubing butt welding and welding joint structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007296541A (en) * | 2006-04-28 | 2007-11-15 | Kobe Steel Ltd | Gas-shielded arc welding solid wire for weather resistant steel and gas-shielded arc welding method using the same |
| CN101138802A (en) * | 2007-07-23 | 2008-03-12 | 长春轨道客车股份有限公司 | Composite arc-welding method |
| CN101288918A (en) * | 2007-04-17 | 2008-10-22 | 中国石油天然气集团公司管材研究所 | 22Cr duplex phase stainless tube welding method |
| CN101439435A (en) * | 2008-12-29 | 2009-05-27 | 南车南京浦镇车辆有限公司 | Method for welding butt joint of welding timber support of steering frame |
| CN101927396A (en) * | 2009-06-19 | 2010-12-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for welding steel plate by multi-layer welding |
| CN102126065A (en) * | 2011-03-08 | 2011-07-20 | 天津电力建设公司 | Method for welding butt-jointed seam of upward plate through manual arc welding |
-
2012
- 2012-12-10 CN CN2012105264238A patent/CN102990207A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007296541A (en) * | 2006-04-28 | 2007-11-15 | Kobe Steel Ltd | Gas-shielded arc welding solid wire for weather resistant steel and gas-shielded arc welding method using the same |
| CN101288918A (en) * | 2007-04-17 | 2008-10-22 | 中国石油天然气集团公司管材研究所 | 22Cr duplex phase stainless tube welding method |
| CN101138802A (en) * | 2007-07-23 | 2008-03-12 | 长春轨道客车股份有限公司 | Composite arc-welding method |
| CN101439435A (en) * | 2008-12-29 | 2009-05-27 | 南车南京浦镇车辆有限公司 | Method for welding butt joint of welding timber support of steering frame |
| CN101927396A (en) * | 2009-06-19 | 2010-12-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for welding steel plate by multi-layer welding |
| CN102126065A (en) * | 2011-03-08 | 2011-07-20 | 天津电力建设公司 | Method for welding butt-jointed seam of upward plate through manual arc welding |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107866628A (en) * | 2016-09-26 | 2018-04-03 | 首都航天机械公司 | Improve the welding method of ageing strengthening aluminum alloy melting plumb joint bearing capacity |
| CN107866628B (en) * | 2016-09-26 | 2021-04-13 | 首都航天机械公司 | Welding method for improving bearing capacity of aging-strengthened aluminum alloy fusion welding joint |
| CN110520240A (en) * | 2017-06-07 | 2019-11-29 | 宝马股份公司 | For manufacturing the method and component composition part of component composition part |
| CN110076425A (en) * | 2019-04-08 | 2019-08-02 | 河钢股份有限公司 | A kind of composite welds and its welding method of weathering steel |
| CN110076425B (en) * | 2019-04-08 | 2022-01-25 | 河钢股份有限公司 | Combined welding seam of weathering resistant steel and welding method thereof |
| CN111774702A (en) * | 2020-07-08 | 2020-10-16 | 北京地铁车辆装备有限公司 | Welding method |
| CN112222573A (en) * | 2020-10-20 | 2021-01-15 | 甘肃一安建设科技集团有限公司 | Welding method for weathering resistant steel Q500QENH |
| CN113172311A (en) * | 2021-04-30 | 2021-07-27 | 中国石油天然气集团有限公司 | Welding method for CT80 steel-grade coiled tubing butt welding and welding joint structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102990207A (en) | Method for welding weather-proof steel plates | |
| CN108788507A (en) | A kind of divided edge structure and welding procedure of steel plate welding | |
| WO2021057307A1 (en) | Welding method for single-sided welding and double-sided forming of mag inverted butt joint | |
| EP2010353B1 (en) | Metal cored electrode for open root pass welding | |
| CN103317218B (en) | Double-sided dual-narrow-gap non-back-gouging welding method for large thick plates | |
| CN106392272A (en) | Y-shaped groove back-chipping-free submerged-arc welding technology for moderately thick plate in boiler and pressure container | |
| CN103394796B (en) | The Narrow sloping-glot of steel containment vessel of nuclear power station and automatic soldering method thereof | |
| CN107322132A (en) | A kind of welding method more than 38mm thickness hull plates | |
| WO2005104713A3 (en) | High carbon welding electrode and method of welding with high carbon welding electrode | |
| CN109570707A (en) | A kind of Steel Bridge U rib plate block complete penetration welding method | |
| CN105081520A (en) | Full-automatic 9% Ni steel medium-thin plate vertical butt joint FCAW one-side welding and double-side molding technological method | |
| CN105081527A (en) | Vertical butt joint automatic welding technological method for medium-thin 5% Ni steel plates | |
| CN107617857A (en) | Heavy crossed steel column makes engineering method | |
| CN102699493B (en) | Carbon dioxide (CO2) gas shielded welding vertical downwards welding method for waste heat boiler heat pipe and connecting plate | |
| CN106903401A (en) | Obliquity buried arc welding method | |
| CN101564790A (en) | Gas protection welding process for offshore steel structure | |
| CN109202227A (en) | A kind of effective operating procedure for inhibiting almag TIG weld defect | |
| CN103659012A (en) | Efficient combined welding technological method for large and thick plates | |
| CN106735768A (en) | Nuclear power station two phase stainless steel gas metal-arc welding technique | |
| CN106271140A (en) | A kind of plasma MAG complex welding method | |
| CN103909329A (en) | Full penetration weld method of HV type groove single face welding seam | |
| CN101439435A (en) | Method for welding butt joint of welding timber support of steering frame | |
| CN111774702B (en) | Welding method | |
| CN110732748B (en) | Rectangular cylinder welding method | |
| CN107838535A (en) | A kind of metal flux-cored wire is applied to CO2The horizontal butt-welded method of automatic welding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130327 |