CN102489843A - Method for welding priming weld seam of root of joint with single bevel groove - Google Patents
Method for welding priming weld seam of root of joint with single bevel groove Download PDFInfo
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- CN102489843A CN102489843A CN2011104264838A CN201110426483A CN102489843A CN 102489843 A CN102489843 A CN 102489843A CN 2011104264838 A CN2011104264838 A CN 2011104264838A CN 201110426483 A CN201110426483 A CN 201110426483A CN 102489843 A CN102489843 A CN 102489843A
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Abstract
The invention relates to a method for welding a priming weld seam of the root of a joint with a single bevel groove. The method comprises the following steps of: 1, heating and melting the welding position of a steel plate I to be welded; 2, filling a metal solder wire into the molten position; 3, butting the root of a groove of a steel plate II which is to be welded and is provided with the groove on a single side and a protruding weld seam point; and 4, melting butt joints of the protruding weld seam point and the root of the groove by argon tungsten-arc welding, and filling the metal solder wire to ensure that the roots of the two joints are integrally fused in the meantime. By the method, the melting speed of the roots of the two joints in the welding and melting process is ensured to be approximate, and the phenomenon that one end of the roots of the joints is molten and the melting temperature is not reached at the other end of the roots of the joints is avoided, so that the root of the joint with the single bevel groove is completely fused.
Description
Technical field
Patent of the present invention relates to a kind of welding method of monolateral double V-groove root of joint backing weld seam.
Background technology
At present; In the body frame structure for automotive in the large-scale mine vehicle; Front and back draw beam, Long Menliang, rear cross beam mainly are to adopt the joint of monolateral double V-groove to connect with being connected of left-right longeron; Because joint one end that this form connects has the hypotenuse groove, and the other end is not have the straight flange of groove and certain length of side is arranged, the thermal diffusivity on the root of joint both sides of this groove type differs very big; Be easy to cause this jointing in root bottoming welding alloying process, to have very fast being melted and not having groove one end also not reach fusion temperature of groove one end like this; Cause root of joint welding to fuse like this, often produce the incomplete fusion defective and maybe can not fuse into one, cause joint to satisfy not and connect design flaw detection requirement.At present main solution is to increase spacer block on the base that bevel end is arranged; But owing to have many places can't increase spacer block on the structure of the parts such as front and back draw beam of vehicle frame, monolateral double V-groove root of joint bottoming welding is one of a kind of more hard-to-weld joint.
Summary of the invention
The object of the present invention is to provide the monolateral double V-groove weld seam heat radiation of a kind of assurance evenly, guarantee the welding method of a kind of monolateral double V-groove root of joint backing weld seam of welding quality.
In order to realize the object of the invention, technical scheme of the present invention is that it may further comprise the steps:
Step 1: to the welding position heat fused of steel plate I to be welded;
Step 2: the metal welding wire is filled at the position to fusing, makes this position form outwards outstanding spot welds after the filling;
Step 3: the monolateral groove root that has the steel plate II of groove to be welded is docked with outstanding spot welds;
Step 4: adopt argon tungsten-arc welding that the metal welding wire is filled in the banjo fixing butt jointing fusing of outstanding spot welds and groove root simultaneously and make the root completion of two joints fuse into one.
Outwards outstanding spot welds height in the said step 2 is 2 mm～3mm.
The metal welding wire that the metal welding wire of said filling is complementary for the material behavior with steel plate to be welded.
Effect of the present invention is; Owing to formed outstanding spot welds in the welding position of steel plate I to be welded; Outstanding spot welds and the monolateral root that has the steel plate II of groove have formed good banjo fixing butt jointing form; Thereby the radiating rate on root joint both sides is basic near consistent, thereby guarantees that the burn-off rate of two roots of joint in the welding fusion process is approaching, has eliminated that root of joint end in welding process is melted and the other end does not also reach fusion temperature.Thereby guaranteed that this monolateral double V-groove root of joint fuses fully.
Description of drawings
Fig. 1 is outwards outstanding spot welds sketch map.
Fig. 2 is that welding root run of the present invention forms sketch map.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment, this door is described further.
With reference to accompanying drawing, it comprises step
Step 1: to the welding position heat fused of steel plate I 1 to be welded;
Step 2: the metal welding wire is filled at the position to fusing, makes this position form the spot welds 3 of outwards outstanding 2 mm～3mm after the filling;
Step 3: the monolateral groove root that has the steel plate II 2 of groove to be welded is docked with outstanding spot welds;
Step 4: adopt argon tungsten-arc welding that the metal welding wire is filled in the banjo fixing butt jointing fusing of outstanding spot welds and groove root simultaneously and make the root completion of two joints fuse into integrally formed weld seam 4.
Said steel plate I 1, steel plate II 2 materials are H60, and its supporting filling metal welding wire is ER80S-G.
Owing to formed outstanding spot welds 3 in the welding position of steel plate I 1 to be welded; Outstanding spot welds 3 has formed good banjo fixing butt jointing form with the monolateral root that has the steel plate II 2 of groove; Thereby the radiating rate on root joint both sides is basic near consistent; Thereby guarantee that two roots of joint are approaching in the burn-off rate of welding in the fusion process, eliminated that root of joint end in welding process is melted and the other end does not also reach fusion temperature.Thereby guaranteed that this monolateral double V-groove root of joint fuses fully.
Claims (3)
1. the welding method of a monolateral double V-groove root of joint backing weld seam, it may further comprise the steps:
Step 1: to the welding position heat fused of steel plate I to be welded;
Step 2: the metal welding wire is filled at the position to fusing, makes this position form outwards outstanding spot welds after the filling;
Step 3: the monolateral groove root that has the steel plate II of groove to be welded is docked with outstanding spot welds;
Step 4: adopt argon tungsten-arc welding that the metal welding wire is filled in the banjo fixing butt jointing fusing of outstanding spot welds and groove root simultaneously and make the root completion of two joints fuse into one.
2. the welding method of a kind of monolateral double V-groove root of joint backing weld seam according to claim 1 is characterized in that, the outwards outstanding spot welds height in the said step 2 is 2 mm～3mm.
3. according to the welding method of claim 1 or the described a kind of monolateral double V-groove root of joint backing weld seam of claim 2, it is characterized in that the metal welding wire that the metal welding wire of said filling is complementary for the material behavior with steel plate to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104264838A CN102489843A (en) | 2011-12-19 | 2011-12-19 | Method for welding priming weld seam of root of joint with single bevel groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104264838A CN102489843A (en) | 2011-12-19 | 2011-12-19 | Method for welding priming weld seam of root of joint with single bevel groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102489843A true CN102489843A (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104264838A Pending CN102489843A (en) | 2011-12-19 | 2011-12-19 | Method for welding priming weld seam of root of joint with single bevel groove |
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| CN (1) | CN102489843A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139229A (en) * | 2013-05-09 | 2014-11-12 | 中国北车集团大同电力机车有限责任公司 | Welding method for forming T-joints |
| CN105499824A (en) * | 2016-01-25 | 2016-04-20 | 重庆长征重工有限责任公司 | Single-slope V-groove structure for steel plate welding |
| CN106695065A (en) * | 2016-12-30 | 2017-05-24 | 上海沪临重工有限公司 | T-shaped plate one-side welding pulse bottoming welding method |
| WO2019019423A1 (en) * | 2017-07-28 | 2019-01-31 | 广船国际有限公司 | Method for assembling and welding trough-type bulkhead and anti-accumulation plate of cargo oil tank of ship |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003145271A (en) * | 2001-11-13 | 2003-05-20 | Mitsubishi Heavy Ind Ltd | Method for welding different kinds of steel grades |
| CN1562548A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Micro melting soldering method of argon-shielded tungsten arc welding for thick plate of red copper without warming-up |
| CN101244480A (en) * | 2007-02-14 | 2008-08-20 | 中国船舶重工集团公司第七二五研究所 | Welding process for high damping copper alloy and steel |
| CN101284330A (en) * | 2008-05-28 | 2008-10-15 | 山东大学 | Molybdenum copper and stainless steel argon tungsten argon arc welding process |
-
2011
- 2011-12-19 CN CN2011104264838A patent/CN102489843A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003145271A (en) * | 2001-11-13 | 2003-05-20 | Mitsubishi Heavy Ind Ltd | Method for welding different kinds of steel grades |
| CN1562548A (en) * | 2004-04-14 | 2005-01-12 | 哈尔滨工业大学 | Micro melting soldering method of argon-shielded tungsten arc welding for thick plate of red copper without warming-up |
| CN101244480A (en) * | 2007-02-14 | 2008-08-20 | 中国船舶重工集团公司第七二五研究所 | Welding process for high damping copper alloy and steel |
| CN101284330A (en) * | 2008-05-28 | 2008-10-15 | 山东大学 | Molybdenum copper and stainless steel argon tungsten argon arc welding process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139229A (en) * | 2013-05-09 | 2014-11-12 | 中国北车集团大同电力机车有限责任公司 | Welding method for forming T-joints |
| CN104139229B (en) * | 2013-05-09 | 2016-08-24 | 中车大同电力机车有限公司 | Form the welding method of T junction |
| CN105499824A (en) * | 2016-01-25 | 2016-04-20 | 重庆长征重工有限责任公司 | Single-slope V-groove structure for steel plate welding |
| CN106695065A (en) * | 2016-12-30 | 2017-05-24 | 上海沪临重工有限公司 | T-shaped plate one-side welding pulse bottoming welding method |
| WO2019019423A1 (en) * | 2017-07-28 | 2019-01-31 | 广船国际有限公司 | Method for assembling and welding trough-type bulkhead and anti-accumulation plate of cargo oil tank of ship |
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Application publication date: 20120613 |