CN105689854A - Metal plate welding method - Google Patents
Metal plate welding method Download PDFInfo
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- CN105689854A CN105689854A CN201410688499.XA CN201410688499A CN105689854A CN 105689854 A CN105689854 A CN 105689854A CN 201410688499 A CN201410688499 A CN 201410688499A CN 105689854 A CN105689854 A CN 105689854A
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Abstract
The invention discloses a metal plate welding method which is characterized by comprising the following steps: a, to-be-welded base metals are an alloy steel material and a low-carbon steel material; b, the alloy steel material is preheated at a preheating temperature of 320-450 DEG C, and the low-carbon steel material does not need to be preheated; c, a to-be-welded welding rod is heated to 230-280 DEG C; e, V-shaped grooves are respectively formed in the welded parts of the alloy steel material and the low-carbon steel material; f, a tungsten electrode argon arc welding machine is adopted, the power type of the machine is direct-current straight polarity, the welding current of the tungsten electrode argon arc welding machine is 80-120 A, the arc voltage of the tungsten electrode argon arc welding machine is 12-14 V, and the diameter Pi of the welding rod is 1.5-2.0 mm; g, interval spot welding is adopted; and h, after the welding is completed, annealing is performed. Through the adoption of the metal plate welding method, the comprehensive welding performance of low-carbon steel and alloy steel can be improved.
Description
Technical field
The invention belongs to field of machining, specifically a kind of panel beating welding method。
Background technology
The welding uneven chemical components of dissimilar steel panel beating, the fusing amount of its both sides mother metal, the composition of deposited metal and fusion zone can change because of diluting effect, the uneven components degree of connector area depends not only on mother metal, the respective primitive component of filler metal, also by the impact of welding procedure, easily adopt small area analysis, shallow fusion penetration, the inhomogeneities of tissue。Under the impact of Thermal Cycle, each regional organization in joint is different, and there is also the organizational structure of complexity in respective regions；The inhomogeneities of its performance；Due to the change of tissue, composition, in generation, has carried out the difference in performance, and the heat affected area impact value that various changes can be multiple proportion change, particularly weld seam both sides changes more greatly, and same high-temperature behavior such as creep rupture strength, creep strength change also very greatly；Its Stress Field Distribution is uneven, and due to the difference of tissue, composition, the thermal coefficient of expansion of joint and heat conductivity are also different, and thermal coefficient of expansion difference causes plastic region different, and residual stress is different；And prior art exists shortcoming in preventing intermetallic compound generation, to be improved。
Summary of the invention
It is an object of the invention to provide a kind of dissimilar steel panel beating welding method, to stop the generation of intermetallic compound in different steel weld process, thus improving the quality of different steel weld of the prior art。
The technical scheme realizing the object of the invention is as follows:
A kind of panel beating welding method, it is characterised in that this welding method comprises the following steps:
A. two kinds of described mother metal respectively alloy steel materials to be welded and low-carbon steel material；
B. will treat that alloy steel material carries out the pre-heat treatment, and preheat temperature 320-450 DEG C, but mild steel need not preheat；
C. welding rod to be welded is heated to 230 DEG C-280 DEG C；
E. offering V-butt in the welding position of alloy steel material and low-carbon steel material before being subjected to, the unlimited angle of its groove is 45-60 °；
F. adopting TIG Welding Machine, its power type is straight polarity direct current, welding current 80-120A, arc voltage 12-14V, shield gas flow rate 9-12L/min, and the diameter of welding rod is Φ 1.5mm-Φ 2.0mm；
G. the interval spot welding adopted, spot size diameter is Φ 3mm-Φ 4mm；
H., after welding, annealing after welding, rate of cooling is 50-70 DEG C/h。
A kind of panel beating welding method of the present invention, the temperature of mother metal and welding rod in strict control welding process, it is possible to prevent the abrupt change of weldment temperature such that it is able to the mother metal and the deposited metal that control the fusing in weld seam stop the time in a liquid state。Thus, it is possible to the intersolubility of mother metal and dissolubility in raising welding process, effectively stop the formation of intermetallic compound and the precipitation of solid solution residual components, such that it is able to prevent welding position from cracking, improve and weld combination property between mild steel and steel alloy。
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and its operating procedure is as follows:
A kind of panel beating welding method, this welding method comprises the following steps:
A. two kinds of described mother metal respectively alloy steel materials to be welded and low-carbon steel material；
B. will treat that alloy steel material carries out the pre-heat treatment, and preheat temperature 320-450 DEG C, but mild steel need not preheat；
C. welding rod to be welded is heated to 230 DEG C-280 DEG C；
E. offering V-butt in the welding position of alloy steel material and low-carbon steel material before being subjected to, the unlimited angle of its groove is 45-60 °；
F. adopting TIG Welding Machine, its power type is straight polarity direct current, welding current 80-120A, arc voltage 12-14V, shield gas flow rate 9-12L/min, and the diameter of welding rod is Φ 1.5mm-Φ 2.0mm；
G. the interval spot welding adopted, spot size diameter is Φ 3mm-Φ 4mm；
H., after welding, annealing after welding, rate of cooling is 50-70 DEG C/h。
A kind of panel beating welding method of the present invention, the temperature of mother metal and welding rod in strict control welding process, it is possible to prevent the abrupt change of weldment temperature such that it is able to the mother metal and the deposited metal that control the fusing in weld seam stop the time in a liquid state。Thus, it is possible to the intersolubility of mother metal and dissolubility in raising welding process, effectively stop the formation of intermetallic compound and the precipitation of solid solution residual components, such that it is able to prevent welding position from cracking；Before welding, preheating can obtain better welding performance, weld preheating, controls interlayer temperature；Post weld heat treatment eliminates stress, adopts tungsten argon arc welding rod can avoid ftractureing during multiple-bead deposit, and argon has fabulous protective effect, can effectively completely cut off surrounding air；Itself neither with metal chemically reactive, be also insoluble in metal so that the reaction in welding process is simple and easy to control, therefore obtain better quality weld seam provide good condition；Tungsten electrode arc is highly stable, even if still can smooth combustion under only small current conditions；The steel of weldability difference, it is necessary to preheating prevents cold crack。
The preferred embodiment of the present invention described in detail above。Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work。Therefore, all technical staff in the art, all should at the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by logic minute analysis, reasoning or the available technical scheme of limited experiment。
Claims (1)
1. a panel beating welding method, it is characterised in that this welding method comprises the following steps:
A. two kinds of described mother metal respectively alloy steel materials to be welded and low-carbon steel material；
B. will treat that alloy steel material carries out the pre-heat treatment, and preheat temperature 320-450 DEG C, but mild steel need not preheat；
C. welding rod to be welded is heated to 230 DEG C-280 DEG C；
E. offering V-butt in the welding position of alloy steel material and low-carbon steel material before being subjected to, the unlimited angle of its groove is 45-60 °；
F. adopting TIG Welding Machine, its power type is straight polarity direct current, welding current 80-120A, arc voltage 12-14V, shield gas flow rate 9-12L/min, and the diameter of welding rod is Φ 1.5mm-Φ 2.0mm；
G. the interval spot welding adopted, spot size diameter is Φ 3mm-Φ 4mm；
H., after welding, annealing after welding, rate of cooling is 50-70 DEG C/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688499.XA CN105689854A (en) | 2014-11-26 | 2014-11-26 | Metal plate welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688499.XA CN105689854A (en) | 2014-11-26 | 2014-11-26 | Metal plate welding method |
Publications (1)
| Publication Number | Publication Date |
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| CN105689854A true CN105689854A (en) | 2016-06-22 |
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| CN201410688499.XA Pending CN105689854A (en) | 2014-11-26 | 2014-11-26 | Metal plate welding method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363406A (en) * | 2017-08-11 | 2017-11-21 | 武汉天琪激光设备制造有限公司 | A kind of method of laser welding metal plate |
| CN108098175A (en) * | 2017-05-18 | 2018-06-01 | 宁波君铭钣金有限公司 | A kind of metal plate welding method |
| CN108620765A (en) * | 2018-05-09 | 2018-10-09 | 长沙小如信息科技有限公司 | A kind of automobile metal plate work welding material and welding procedure |
| CN110640273A (en) * | 2019-08-30 | 2020-01-03 | 合肥通快钣金科技有限公司 | Welding method for cold-rolled sheet metal part |
| CN112676682A (en) * | 2020-12-24 | 2021-04-20 | 东风（十堰）汽车部件有限公司 | Automatic welding equipment and process for automobile door assembly |
| CN114603234A (en) * | 2022-04-02 | 2022-06-10 | 鲁西工业装备有限公司 | Method for welding 42CrMo alloy steel and low-carbon steel dissimilar steel |
-
2014
- 2014-11-26 CN CN201410688499.XA patent/CN105689854A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098175A (en) * | 2017-05-18 | 2018-06-01 | 宁波君铭钣金有限公司 | A kind of metal plate welding method |
| CN107363406A (en) * | 2017-08-11 | 2017-11-21 | 武汉天琪激光设备制造有限公司 | A kind of method of laser welding metal plate |
| CN108620765A (en) * | 2018-05-09 | 2018-10-09 | 长沙小如信息科技有限公司 | A kind of automobile metal plate work welding material and welding procedure |
| CN110640273A (en) * | 2019-08-30 | 2020-01-03 | 合肥通快钣金科技有限公司 | Welding method for cold-rolled sheet metal part |
| CN112676682A (en) * | 2020-12-24 | 2021-04-20 | 东风（十堰）汽车部件有限公司 | Automatic welding equipment and process for automobile door assembly |
| CN114603234A (en) * | 2022-04-02 | 2022-06-10 | 鲁西工业装备有限公司 | Method for welding 42CrMo alloy steel and low-carbon steel dissimilar steel |
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Application publication date: 20160622 |
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| WD01 | Invention patent application deemed withdrawn after publication |