CN109807439A - A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness - Google Patents
A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness Download PDFInfo
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- CN109807439A CN109807439A CN201910015228.0A CN201910015228A CN109807439A CN 109807439 A CN109807439 A CN 109807439A CN 201910015228 A CN201910015228 A CN 201910015228A CN 109807439 A CN109807439 A CN 109807439A
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Abstract
A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, it is related to a kind of metal welding procedure, the technique comprises the following processes: being handled under clean experimental situation using surface of the acetone to plate to be processed, guarantees that plate surface to be processed does not have greasy dirt, impurity；It the heterogeneous dual phase sheet steel of uniform thickness will not be placed on testing stand at overlapping mode；Set bond pattern using the control panel of CMT welding machine, determine and welding gun is placed on automatic vehicle fixture and is adjusted good position and angle after bond pattern, determine test specimen position to be welded and welding gun walk it is consistent after, start to weld；It is welded using leftward welding.The present invention is welded by using cold metal transfer, is adjusted various welding conditions in the welding process and is improved process conditions, it is ensured that appearance of weld is good, uniform and smooth, non-nuclear density gauge.Especially this method effectively reduces thermal weld stress, save the cost, and the connector of good mechanical properties can be obtained.
Description
Technical field
The present invention relates to a kind of metal welding procedures, weld more particularly to a kind of heterogeneous dual phase steel cold metal transfer of not uniform thickness
Connect technique.
Background technique
Automobile manufacture lightweight in recent years, which has become, realizes one of the important means of energy-saving and emission-reduction this purpose, high-strength
Degree steel has become prevailing light weight material in automobile, and has very big application prospect.Either in current vehicle body
Manufacturing market still in the future for a long period of time, the high-strength steel capital by be vehicle body materials primary selection.Therefore uniform thickness is not different
Quality, efficiency and the reliability of matter double coherent correlation connector seem most important.
With automobile gradually lightweight, material thickness is thinner, and traditional MIG/MAG thermal weld stress amount is big, and being easy will be thin
Plate burn-through, post welding distortion are big.Electrode can gradually be worn in the welding process for resistance spot welding, its heat in this way after multiple welding
Input quantity will be unable to be guaranteed, can impact to welding result.Laser welding then has the high, highly reflective material to matching requirements
The disadvantages of (such as aluminium, copper) hardly possible is welded, cost of investment is high.Therefore novel welding apparatus and technique must be developed to realize new automobile
The welding of material.
CMT(cold metal transfer) technology is widely used field, it almost can be applied to known all welding fields,
Such as microelectronic component, locomotive manufacturing industry, aerospace field etc..CMT(cold metal transfer) technique by the movement of welding wire with molten
Drop transient process combines, and realizes that cold-hot is alternately welded in the welding process, heat input is greatly lowered, when having welding
Deform it is small, without splash, bridging ability is good, even weld is consistent, speed of welding is high, operating cost is low the features such as, be thin plate weldering
Connection technology provides perfect solution.
Summary of the invention
The purpose of the present invention is to provide one kind, the heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, the present invention do not pass through
It is welded using cold metal transfer, adjust various welding conditions in the welding process and improves process conditions, it is ensured that appearance of weld
Well, uniform and smooth, non-nuclear density gauge.Especially this method effectively reduces thermal weld stress, save the cost, and can be obtained
The connector of good mechanical properties.
The purpose of the present invention is what is be achieved through the following technical solutions:
The heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, the technique do not comprise the following processes one kind:
It is handled under clean experimental situation using surface of the acetone to plate to be processed, guarantees that plate surface to be processed does not have
There are greasy dirt, impurity；It the heterogeneous dual phase sheet steel of uniform thickness will not be placed on testing stand at overlapping mode, and design two different overlap joints
Sequentially；Test specimen is fixed on experimental bench in such a way that overlapped, does not have gap between guarantee steel plate as far as possible；Utilize CMT welding machine
Control panel sets bond pattern, determine after bond pattern by welding gun be placed on automatic vehicle fixture and adjust good position and
Angle attempts mobile welding gun, guarantees that welding gun walks with lap weld point-blank, determine test specimen position to be welded and welding gun
After walking unanimously, start to weld；It is welded using leftward welding, controls speed of welding, the wire feed rate in welding process.
A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, the two different overlap joints of design are suitable
Sequence: one is 1.4mm thick steel plates upper, and 1.2mm thick steel plate is under, and one is 1.2mm thick steel plates upper, and 1.4mm thick steel plate exists
Under, the width of the lap of two boards is 8-12mm.
A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, the welding condition range is such as
Under: using the low alloy welding wires of diameter 1.2mm, dry extension of electrode 10mm, wire feed rate is 1.5m/min ~ 5.0m/min, weldering
Connecing speed is 400mm/min ~ 600mm/min.
A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, the protective gas are 80%Ar+20%
CO2Argon gas and carbon dioxide gas mixture.
A kind of described not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, it is described to use leftward welding, welding gun with
CMT(cold metal transfer is selected at 70 ° of inclination angles with steel plate on the vertical direction of welding direction) mode, wire feed rate 1.5m/
Min ~ 5.0m/min, speed of welding are 400mm/min ~ 600mm/min, and arc length correction factor is 0, gas flow 25L/min, weldering
Silk stem elongation 10mm.
The advantages and effects of the present invention are:
The present invention is welded by using cold metal transfer, is adjusted various welding conditions in the welding process and is improved technique item
Part, it is ensured that appearance of weld is good, uniform and smooth, non-nuclear density gauge.Especially this method effectively reduces thermal weld stress, saves
Cost, and the connector of good mechanical properties can be obtained.Using the weld seam overlap joint of the resulting heterogeneous dual phase steel of not uniform thickness of the present invention
The tensile strength of connector is up to 12.28kN, and fracture position the heterogeneous dual phase steel of not uniform thickness weld seam lap joint it is endless
Full phase change zone.
Detailed description of the invention
Fig. 1 is the leftward welding schematic diagram that the present invention uses；
Fig. 2 is that weld seam overlaps schematic diagram；It is 1.4mm thick steel plate at the middle and upper levels, and long 150mm, width 150mm, lower layer is 1.2mm thickness steel
Plate, long 150mm, width 125mm；The overlap width of two steel plates is 10mm.Welding gun is on the direction vertical with welding direction
With steel plate at 70 ° of inclination angles, dry extension of electrode 10mm.
Fig. 3 is that weld seam overlaps schematic diagram；It is 1.2mm thick steel plate, long 150mm, width 125mm, lower layer 1.4mm at the middle and upper levels
Thick steel plate, long 150mm, width 150mm.The overlap width of two steel plates is 10mm.Welding gun is in the side vertical with welding direction
Upwards and steel plate is at 70 ° of inclination angles, dry extension of electrode 10mm.
Fig. 4 is embodiment 1.4mm thick steel plate upper, and 1.2mm thick steel plate is not after the heterogeneous dual phase steel of uniform thickness completes welding under
Front welding effect picture；
Fig. 5 is embodiment 1.4mm thick steel plate upper, and the heterogeneous dual phase steel of uniform thickness does not complete the back side after welding to 1.2mm thick steel plate under
Welding effect figure；
Fig. 6 is embodiment 1.4mm thick steel plate upper, and 1.2mm thick steel plate is not after the heterogeneous dual phase steel of uniform thickness completes welding under, welding
Bond pull sample fracture figure；
Fig. 7 is embodiment 1.2mm thick steel plate upper, and the heterogeneous dual phase steel of uniform thickness does not complete front after welding to 1.4mm thick steel plate under
Welding effect figure；
Fig. 8 is embodiment 1.2mm thick steel plate upper, and the heterogeneous dual phase steel of uniform thickness does not complete the back side after welding to 1.4mm thick steel plate under
Welding effect figure；
Fig. 9 is embodiment 1.2mm thick steel plate upper, and 1.4mm thick steel plate is not after the heterogeneous dual phase steel of uniform thickness completes welding under, welding
Bond pull sample fracture figure.
Specific embodiment
The present invention is described in detail for illustrated embodiment with reference to the accompanying drawing.
In the following description, a large amount of concrete details are provided so as to provide a more thorough understanding of the present invention.However,
It is obvious to the skilled person that the present invention may not need one or more of these details and be able to reality
It applies.In other examples, in order to avoid confusion with the present invention, some technical characteristics well known in the art are not retouched
It states.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Technical solution of the present invention is illustrated, present pre-ferred embodiments are described in detail as follows, however other than these detailed descriptions, this
Invention can also have other embodiments.
The present invention provides a kind of not heterogeneous dual phase steel CMT(cold metal transfers of uniform thickness) welding procedure, using thickness
The dual phase sheet steel and thickness 1.2mm, the dual phase sheet steel of long 150mm, wide 125mm of 1.4mm, long 150mm, wide 150mm are welded,
It needs to carry out pre-welding treatment to the heterogeneous dual phase sheet steel of not uniform thickness before weldering: conscientiously be wiped using surface of the acetone to plate to be processed
It wipes, it is therefore an objective to clean the grease stain of plate surface and dust, to guarantee the clean of plate.
The heterogeneous dual phase sheet steel of uniform thickness is placed on experimental bench in the form of overlapped later, the width of steel plate lap
For 10mm, welding condition range is as follows:
Using the low alloy welding wires of diameter 1.2mm, dry extension of electrode 10mm, wire feed rate is 1.5m/min ~ 5.0m/min, weldering
Connecing speed is 400mm/min ~ 600mm/min；
Test specimen is fixed on experimental bench in such a way that overlapped, does not have gap between guarantee steel plate as far as possible；Utilize CMT(cold metal
Transition) welding machine control panel set bond pattern, welding gun is placed on automatic vehicle fixture and is adjusted after determining bond pattern
Whole good position and angle attempt mobile welding gun, guarantee that welding gun walks with lap weld point-blank, determine that test specimen is to be welded
After socket part position and welding gun walk unanimously, start to weld；
In welding process, use protective gas composition for 80%Ar+20%CO2Argon gas and carbon dioxide gas mixture as protect
Gas, gas flow 25L/min.
It is welded using leftward welding, welding gun is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles.
It elaborates below with reference to Fig. 4-Fig. 9 to the present invention.
Embodiment 1:
In the implementation case, CMT(cold metal transfer) welding condition selection are as follows: 1.4mm thick steel plate is in upper, 1.2mm thickness steel
Plate is under, wire feed rate: 3.0m/min, speed of welding: 400mm/min.Welding gun on the direction vertical with welding direction with steel
Plate is at 70 ° of inclination angles.Welding wire is the low alloy welding wires of diameter 1.2mm, dry extension of electrode 10mm.Use protective gas composition for 80%
Ar+20%CO2Argon gas and carbon dioxide gas mixture as protection gas.
Lap joint will not be formed by the heterogeneous dual phase sheet steel of uniform thickness, overlap width is 10mm.Then cold using CMT(
Metal transfer) welding machine welded.
In the present embodiment, the weld seam obtained is as shown in figure 4, even weld, Welded lap joint forming are flat and smooth, beautiful
It sees；As shown in figure 5, the generation of the non-fusion phenomenon of backboard；Postwelding has carried out tension test, tensile speed 3mm/ to the weld seam
Min measures its tensile strength and reaches 12.28kN, as shown in fig. 6, the fracture of tension test fracture is in the heterogeneous dual phase steel weldering of not uniform thickness
The incomplete transformation area of connector.
Embodiment 2:
In the implementation case, CMT(cold metal transfer) welding condition selection are as follows: 1.4mm thick steel plate is in upper, 1.2mm thickness steel
Plate is under, wire feed rate: 3.0m/min, speed of welding: 500mm/min.Welding gun on the direction vertical with welding direction with steel
Plate is at 70 ° of inclination angles.Welding wire is the low alloy welding wires of diameter 1.2mm, dry extension of electrode 10mm.Use protective gas composition for 80%
Ar+20%CO2Argon gas and carbon dioxide gas mixture as protection gas.
Lap joint will not be formed by the heterogeneous dual phase sheet steel of uniform thickness, overlap width is 10mm.Then cold using CMT(
Metal transfer) welding machine welded.
In the present embodiment, the weld seam obtained is as shown in fig. 7, even weld, Welded lap joint forming are flat and smooth, beautiful
It sees；As shown in figure 8, the generation of the non-fusion phenomenon of backboard；Postwelding has carried out tension test, tensile speed 3mm/ to the weld seam
Min measures its tensile strength and reaches 12.05kN, as shown in figure 9, the fracture of tension test fracture is in the heterogeneous dual phase steel weldering of not uniform thickness
The incomplete transformation area of connector.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Specific embodiment, devices and structures not described in detail herein should be understood as is given with the common mode in this field
Implement；Anyone skilled in the art may be by above-mentioned without departing from the scope of the technical proposal of the invention
The methods and technical content of announcement makes many possible changes and modifications to technical solution of the present invention, or is revised as equivalent variations
Equivalent embodiment, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention,
Any simple modifications, equivalents, and modifications made to the above embodiment according to the technical essence of the invention still fall within this
In the range of inventive technique scheme protection.
Claims (5)
1. a kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness, which is characterized in that the technique comprises the following processes:
It is handled under clean experimental situation using surface of the acetone to plate to be processed, guarantees that plate surface to be processed does not have
There are greasy dirt, impurity；It the heterogeneous dual phase sheet steel of uniform thickness will not be placed on testing stand at overlapping mode, and design two different overlap joints
Sequentially；Test specimen is fixed on experimental bench in such a way that overlapped, does not have gap between guarantee steel plate as far as possible；Utilize CMT welding machine
Control panel sets bond pattern, determine after bond pattern by welding gun be placed on automatic vehicle fixture and adjust good position and
Angle attempts mobile welding gun, guarantees that welding gun walks with lap weld point-blank, determine test specimen position to be welded and welding gun
After walking unanimously, start to weld；It is welded using leftward welding, controls speed of welding, the wire feed rate in welding process.
2. a kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness according to claim 1, which is characterized in that institute
State design two different overlap joints sequence: one is 1.4mm thick steel plates upper, and 1.2mm thick steel plate is under, and one is 1.2mm thickness
Steel plate is upper, and for 1.4mm thick steel plate under, the width of the lap of two boards is 8-12mm.
3. a kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness according to claim 1, which is characterized in that institute
It is as follows to state welding condition range: using the low alloy welding wires of diameter 1.2mm, dry extension of electrode 10mm, wire feed rate is
1.5m/min ~ 5.0m/min, speed of welding are 400mm/min ~ 600mm/min.
4. a kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness according to claim 1, which is characterized in that institute
Stating protective gas is 80%Ar+20%CO2Argon gas and carbon dioxide gas mixture.
5. a kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness according to claim 1, which is characterized in that institute
It states using leftward welding, welding gun is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles, selection CMT(cold metal transfer)
Mode, wire feed rate are 1.5m/min ~ 5.0m/min, and speed of welding is 400mm/min ~ 600mm/min, and arc length correction factor is
0, gas flow 25L/min, dry extension of electrode 10mm.
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| CN201910015228.0A CN109807439A (en) | 2019-01-08 | 2019-01-08 | A kind of not heterogeneous dual phase steel cold metal transfer welding procedure of uniform thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110705020A (en) * | 2019-08-28 | 2020-01-17 | 南京理工大学 | Lap joint rate optimization method based on electric arc additive surface quality evaluation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049591A (en) * | 2010-12-29 | 2011-05-11 | 上海交通大学 | Dissimilar metal spot welding system of light metal and coated steel and welding method thereof |
| CN102500853A (en) * | 2011-10-14 | 2012-06-20 | 兰州理工大学 | Cold metal transfer connection method of aluminum/steel dissimilar metal |
| US20140183166A1 (en) * | 2012-12-27 | 2014-07-03 | Metal Industries Research & Development Centre | Manufacturing method for advanced high-strength steel wheel and jig device thereof |
| CN106624281A (en) * | 2017-02-28 | 2017-05-10 | 宝山钢铁股份有限公司 | Method for preparing steel-aluminum dissimilar metal overlap joint by adopting CMT technology |
| CN108465906A (en) * | 2018-03-27 | 2018-08-31 | 上海工程技术大学 | Aluminium-steel material cold metal transfer melts soldered seam bridging method |
| CN108856983A (en) * | 2018-07-10 | 2018-11-23 | 湖南机电职业技术学院 | A kind of cold metal transfer welding procedure |
-
2019
- 2019-01-08 CN CN201910015228.0A patent/CN109807439A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049591A (en) * | 2010-12-29 | 2011-05-11 | 上海交通大学 | Dissimilar metal spot welding system of light metal and coated steel and welding method thereof |
| CN102500853A (en) * | 2011-10-14 | 2012-06-20 | 兰州理工大学 | Cold metal transfer connection method of aluminum/steel dissimilar metal |
| US20140183166A1 (en) * | 2012-12-27 | 2014-07-03 | Metal Industries Research & Development Centre | Manufacturing method for advanced high-strength steel wheel and jig device thereof |
| CN106624281A (en) * | 2017-02-28 | 2017-05-10 | 宝山钢铁股份有限公司 | Method for preparing steel-aluminum dissimilar metal overlap joint by adopting CMT technology |
| CN108465906A (en) * | 2018-03-27 | 2018-08-31 | 上海工程技术大学 | Aluminium-steel material cold metal transfer melts soldered seam bridging method |
| CN108856983A (en) * | 2018-07-10 | 2018-11-23 | 湖南机电职业技术学院 | A kind of cold metal transfer welding procedure |
Non-Patent Citations (1)
| Title |
|---|
| 陈永满: "DP980双相钢冷金属过渡焊焊接工艺及接头组织性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110705020A (en) * | 2019-08-28 | 2020-01-17 | 南京理工大学 | Lap joint rate optimization method based on electric arc additive surface quality evaluation |
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