CN107511566A - A kind of welding method for being heat-treated destressing - Google Patents
A kind of welding method for being heat-treated destressing Download PDFInfo
- Publication number
- CN107511566A CN107511566A CN201710997755.7A CN201710997755A CN107511566A CN 107511566 A CN107511566 A CN 107511566A CN 201710997755 A CN201710997755 A CN 201710997755A CN 107511566 A CN107511566 A CN 107511566A
- Authority
- CN
- China
- Prior art keywords
- welding
- workpiece
- heat
- groove
- destressing
- 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.)
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Classifications
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The invention discloses a kind of welding method for being heat-treated destressing, comprise the following steps that：A kind of welding method for being heat-treated destressing, it is characterised in that be preheated to 200 DEG C by batch-type furnace before workpiece welding, soaking time be no less than 1h, and workpiece is then welded in hot state, and postwelding, which melts down to be incubated, is no less than 2h, after come out of the stove air cooling.The present invention has very strong practicality, and the welding point back-welding shape quality of acquisition is good and simple to operate, and welding quality stable, welding production efficiency is greatly improved, for realizing that engineering application has very strong generalization.Additionally by the constant temperature heat treatment to workpiece, the welding residual stress of workpiece is eliminated in time, the mechanical performance of workpiece is substantially improved, while improve the service life of workpiece, the cost such as human and material resources of market service after reduction.
Description
Technical field
The present invention relates to a kind of welding method.A kind of welding method for being heat-treated destressing of specific design.
Background technology
With the development of modernization industry, workpiece produces remaining hard after machining, deformation processing, heat treatment and welding
Power, the self-strength of workpiece is on the one hand influenceed, on the other hand influence the service life of workpiece, and eliminating workpiece residual stress most has
One of method of effect is that workpiece is heat-treated by annealing.CO2 gas shielded arc weldings be by the use of CO2 as protective gas,
A kind of gas metal-arc welding of the wire as electrode is filled, the production efficiency of CO2 gas shielded arc weldings welding is high, welding behaviour
Make convenient and simple and be easily achieved all-position welding, while the rust-proofing ability of weld seam is strong, the prices of CO2 gases is also relatively
The low cost for reducing welding, and welding easy to automate.
The content of the invention
To achieve the above object, present invention employs following technical scheme：
A kind of welding method for being heat-treated destressing, it is characterised in that：Before workpiece welding 200 are preheated to by batch-type furnace
DEG C, soaking time is no less than 1h, and workpiece is then welded in hot state, and postwelding melts down insulation and is no less than 2h, after come out of the stove sky
It is cold.
Preferably, for described milling machine by a work pieces process into unilateral double V-groove workpiece, bevel angle is 35 °~45 °, right
Another workpiece is polished in the range of welding region 50mm, derusted, and by assemble welding gap is 3mm between two described workpiece
~6mm, forms unilateral double V-groove, and workpiece is in downhand welding welding position during welding.
Preferably, described welding manner is to use CO2 gas shielded arc weldings, welding process pay attention to adjusting welding wire tip with
The distance between groove, ensure that welding arc can be applied on welding groove well during torch swinging, to obtain
Obtain appearance of weld well.
Preferably, described chamber type electric resistance furnace, stove specification are 2.5x1x1 rice, and resistance furnace power is 45KW.
Beneficial effect of the present invention：The present invention has very strong practicality, and the welding point back-welding shape quality of acquisition is good, and
And it is simple to operate, welding quality stable, welding production efficiency is greatly improved, for realizing that it is very strong that engineering application has
Generalization.Additionally by the constant temperature heat treatment to workpiece, the welding residual stress of workpiece is eliminated in time, workpiece is substantially improved
Mechanical performance, while the service life of workpiece is improved, the cost such as human and material resources of market service after reduction.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1：
A kind of welding method for being heat-treated destressing, is preheated to 200 DEG C, soaking time is not before workpiece welding by batch-type furnace
Less than 1h, workpiece is then welded in hot state, and postwelding melts down insulation and is no less than 2h, after come out of the stove air cooling.Milling machine is by a work
Part is processed into unilateral double V-groove workpiece, and bevel angle is 35 °~45 °, and another workpiece is carried out in the range of welding region 50mm
Polishing, derusting, by assemble welding gap it is 3mm~6mm between two described workpiece, forms unilateral double V-groove, workpiece during welding
In downhand welding welding position.Welding manner is to use CO2 gas shielded arc weldings, and welding process pays attention to adjusting welding wire tip and groove
The distance between, ensure that welding arc can be applied on welding groove well during torch swinging, it is good to obtain
Good appearance of weld.Chamber type electric resistance furnace, stove specification are 2.5x1x1 rice, and resistance furnace power is 45KW.
Embodiment 2：
A kind of welding method for being heat-treated destressing, is preheated to 100 DEG C, soaking time is not before workpiece welding by batch-type furnace
Less than 1h, workpiece is then welded in hot state, and postwelding melts down insulation and is no less than 1h, after come out of the stove air cooling.Milling machine is by a work
Part is processed into unilateral double V-groove workpiece, and bevel angle is 35 °, another workpiece is polished in the range of welding region 50mm,
Derusting, by assemble welding gap it is 3mm between two described workpiece, forms unilateral double V-groove, workpiece is in downhand welding and welded during welding
Connect position.Welding manner is to use CO2 gas shielded arc weldings, welding process pay attention to adjusting between welding wire tip and groove away from
From ensureing that welding arc can be applied on welding groove well during torch swinging, to obtain good weld seam
Shaping.Chamber type electric resistance furnace, stove specification are 2.5x1x1 rice, and resistance furnace power is 30KW.
Embodiment 3：
A kind of welding method for being heat-treated destressing, is preheated to 300 DEG C, soaking time is not before workpiece welding by batch-type furnace
Less than 1h, workpiece is then welded in hot state, and postwelding melts down insulation and is no less than 4h, after come out of the stove air cooling.Milling machine is by a work
Part is processed into unilateral double V-groove workpiece, and bevel angle is 45 °, another workpiece is polished in the range of welding region 50mm,
Derusting, by assemble welding gap it is 6mm between two described workpiece, forms unilateral double V-groove, workpiece is in downhand welding and welded during welding
Connect position.Welding manner is to use CO2 gas shielded arc weldings, welding process pay attention to adjusting between welding wire tip and groove away from
From ensureing that welding arc can be applied on welding groove well during torch swinging, to obtain good weld seam
Shaping.Chamber type electric resistance furnace, stove specification are 2.5x1x1 rice, and resistance furnace power is 60KW.
The technical scheme provided above the embodiment of the present invention is described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are set forth, the explanation of above example is only applicable to help and understands this
The principle of inventive embodiments；Meanwhile for those of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party
There will be changes in formula and application, in summary, this specification content should not be construed as limiting the invention.
Claims (4)
- A kind of 1. welding method for being heat-treated destressing, it is characterised in that：200 DEG C are preheated to by batch-type furnace before workpiece welding, Soaking time is no less than 1h, and workpiece is then welded in hot state, and postwelding melts down insulation and is no less than 2h, after come out of the stove air cooling.
- 2. a kind of welding method for being heat-treated destressing, welding workpiece is characterized in that using milling machine according to claim 1 By a work pieces process into unilateral double V-groove workpiece, bevel angle is 35 °~45 °, to another workpiece in welding region 50mm scopes Inside polished, derusted, by assemble welding gap be 3mm~6mm between two described workpiece, form unilateral double V-groove, welding When workpiece be in downhand welding welding position.
- 3. a kind of welding method for being heat-treated destressing, welding manner is characterized in that using CO2 gas according to claim 1 Body protection weldering, welding process pay attention to adjusting the distance between welding wire tip and groove, ensure to weld during torch swinging Electric arc can be applied on welding groove well, to obtain good appearance of weld.
- 4. a kind of welding method for being heat-treated destressing, described chamber type electric resistance furnace, stove specification are according to claim 1 2.5x1x1 rice, resistance furnace power are 45KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710997755.7A CN107511566A (en) | 2017-10-24 | 2017-10-24 | A kind of welding method for being heat-treated destressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710997755.7A CN107511566A (en) | 2017-10-24 | 2017-10-24 | A kind of welding method for being heat-treated destressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107511566A true CN107511566A (en) | 2017-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710997755.7A Pending CN107511566A (en) | 2017-10-24 | 2017-10-24 | A kind of welding method for being heat-treated destressing |
Country Status (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000254795A (en) * | 1999-03-09 | 2000-09-19 | Babcock Hitachi Kk | Method for welding heat resistant steel and after heat treatment |
| CN101216056A (en) * | 2007-12-26 | 2008-07-09 | 南阳市南石力天传动件有限公司 | Large journey low-temperature extension hydraulic cylinder manufacture method |
| CN101508050A (en) * | 2009-02-20 | 2009-08-19 | 中冶实久建设有限公司南京分公司 | CO2 gas shielded welding method |
| CN103521887A (en) * | 2013-05-30 | 2014-01-22 | 洛阳天信矿山机械制造有限公司 | Welding technology of 45 steel and 35 CrMo cast steel |
| CN106180981A (en) * | 2016-08-05 | 2016-12-07 | 中铁十八局集团第四工程有限公司 | The CO of super large caliber steel pipe2gas protection welding process |
| CN106868425A (en) * | 2017-03-16 | 2017-06-20 | 东北大学 | A kind of post weld heat treatment method of Mn tough cut deal welding point low-temperature impact toughness high in 690MPa grades of low C of improvement |
-
2017
- 2017-10-24 CN CN201710997755.7A patent/CN107511566A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000254795A (en) * | 1999-03-09 | 2000-09-19 | Babcock Hitachi Kk | Method for welding heat resistant steel and after heat treatment |
| CN101216056A (en) * | 2007-12-26 | 2008-07-09 | 南阳市南石力天传动件有限公司 | Large journey low-temperature extension hydraulic cylinder manufacture method |
| CN101508050A (en) * | 2009-02-20 | 2009-08-19 | 中冶实久建设有限公司南京分公司 | CO2 gas shielded welding method |
| CN103521887A (en) * | 2013-05-30 | 2014-01-22 | 洛阳天信矿山机械制造有限公司 | Welding technology of 45 steel and 35 CrMo cast steel |
| CN106180981A (en) * | 2016-08-05 | 2016-12-07 | 中铁十八局集团第四工程有限公司 | The CO of super large caliber steel pipe2gas protection welding process |
| CN106868425A (en) * | 2017-03-16 | 2017-06-20 | 东北大学 | A kind of post weld heat treatment method of Mn tough cut deal welding point low-temperature impact toughness high in 690MPa grades of low C of improvement |
Non-Patent Citations (1)
| Title |
|---|
| 王兴如等: "《船舶修理工艺手册》", 31 October 2006, 大连海事大学出版社 * |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171226 |