CN110303221A - A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique - Google Patents
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique Download PDFInfo
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- CN110303221A CN110303221A CN201910529206.6A CN201910529206A CN110303221A CN 110303221 A CN110303221 A CN 110303221A CN 201910529206 A CN201910529206 A CN 201910529206A CN 110303221 A CN110303221 A CN 110303221A
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- welding
- cmt
- superelevation
- dual phase
- phase steel
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Classifications
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- 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
- B23K9/02—Seam welding; Backing means; Inserts
-
- 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
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, are related to a kind of metal welding procedure, firstly, being handled under clean experimental situation using surface of the acetone to experiment plate；The strong dual phase steel overlap joint of two pieces of superelevation is placed on testing stand；Utilize CMT(cold metal transfer) control panel of welding machine setting bond pattern, determine and welding gun be placed on automatic vehicle fixture and 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.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.Using the tensile strength of the weld seam lap joint of the resulting strong dual phase steel of superelevation of the present invention, it is up to 13.40kN, and fracture position is in the incomplete transformation area of the weld seam lap joint of the strong dual phase steel of superelevation.
Description
Technical field
The present invention relates to a kind of metal welding procedures, more particularly to a kind of strong dual phase steel CMT of superelevation and CMT pulse welding
Technique.
Background technique
Global high speed development and bring environmental pollution is got worse, vehicle exhaust is one of primary pollution source, passes through vapour
Vehicle lightweight may be implemented to reduce exhaust emissions, while can also greatly improve the security performance of automobile.Steel is still automobile
Preferred material in manufacture, and high strength steel has become prevailing light weight material in automobile, and has very big application
Prospect.Either current Auto-body manufacturing market still in the future for a long period of time, high-strength steel especially super-high strength steel
It all will be that main in Auto-body manufacturing uses material.Therefore efficiency, quality and the reliability of the strong double coherent correlation connector of superelevation are weights
In it is weight.
With automobile gradually lightweight, material thickness is thinner, uses traditional MIG(welding)/
MAG(metal active gas welding) welding manner welding thin plate since heat input is big is easy to appear thin plate burn-through, it welds
After deform the problems such as big.And resistance spot welding not can guarantee hot defeated due to the consumption of electrode in welding process after prolonged work
Enter amount, not can guarantee the quality of welding point.Laser welding then has the disadvantages of equipment cost is high, and matching requirements are high.Therefore necessary
Novel welding apparatus and technique are developed to realize the welding of new automobile 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, space industry etc..CMT(cold metal transfer) technique by the movement of welding wire with molten drop mistake
Transient combines, and realizes that cold-hot is alternately welded in the welding process, heat input is greatly lowered, so that deforming when welding
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, CMT pulse technique is more
These features are highlighted, provide perfect solution for the welding technique of thin plate.
Summary of the invention
The purpose of the present invention is to provide a kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, the present invention is by adopting
It is welded with cold metal transfer, adjust various welding conditions in the welding process and improves process conditions, it is ensured that appearance of weld is good
It is good, uniform and smooth, non-nuclear density gauge.Using the tensile strength of the weld seam lap joint of the resulting strong dual phase steel of superelevation of the present invention,
It is up to 13.40kN, and fracture position is in the incomplete transformation area of the weld seam lap joint of the strong dual phase steel of superelevation.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, the technique includes following preparation process:
Firstly, being handled under clean experimental situation using surface of the acetone to experiment plate；Guarantee experiment plate surface
There is no greasy dirt, impurity；It is slightly polished using grinding wheel at place to be welded and removes surface oxide layer, guarantee quality of weld joint；By two pieces
The strong dual phase steel overlap joint of superelevation is placed on testing stand, and the width of the lap of two boards is 8mm ~ 12mm, as far as possible guarantee steel
There is no gap between plate；Utilize CMT(cold metal transfer) control panel of welding machine setting bond pattern, determining will after bond pattern
Welding gun is placed on automatic vehicle fixture and adjusts good position and angle, attempts mobile welding gun, guarantees that welding gun is walked and overlapped
Weld seam point-blank, after determining that test specimen position to be welded and welding gun walk unanimously, starts to weld；Welding condition range
As follows: using the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode is 8mm ~ 12mm, welding current
For 104A ~ 178A, weldingvoltage is 10.4V ~ 12.2V, and speed of welding is 350mm/min ~ 600mm/min；Utilize the cold gold of CMT(
Belong to transition) the control panel setting bond pattern (including CMT and CMT pulse both of which) of welding machine, determining will after bond pattern
Welding gun is placed on small vehicle clamper and adjusts good position and angle, and test specimen is placed on testing stand and tries welding tractor of walking about, really
Determine to guarantee there is no gap between steel plate with clamp after position to be welded walks unanimously with welding gun；It is welded using leftward welding
It connects.
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, alloy melting pole gas in the welding use
Body protects welding wire；The protective gas of selection is argon gas and carbon dioxide gas gaseous mixture.
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, the welding procedure use leftward welding, weldering
Rifle is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles, selection CMT(cold metal transfer) mode.
A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, the welding current are 104A ~ 178A, weldering
Connecing voltage is 10.4V ~ 12.2V, and speed of welding is 350mm/min ~ 600mm/min, and arc length correction factor is 0, gas flow
20L/min, dry extension of electrode 8mm ~ 12mm；CMT pulse mode is selected, welding current is 104A ~ 178A, and weldingvoltage is
10.4V ~ 12.2V, speed of welding are 350mm/min ~ 600mm/min, and arc length correction factor is 0, gas flow 20L/min, weldering
Silk stem elongation 8mm ~ 12mm.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.In CMT(cold metal transfer) under mode using the resulting superelevation of the present invention
The tensile strength of the weld seam lap joint of strong dual phase steel, is up to 13.33kN；It is resulting using the present invention in CMT pulse mode
The tensile strength of the weld seam lap joint of the strong dual phase steel of superelevation is up to 13.40kN, and fracture position is in the strong dual phase steel of superelevation
The incomplete transformation area of weld seam lap joint.
Detailed description of the invention
It, below will be to embodiment or description of the prior art for the clearer technical solution illustrated in the embodiment of the present invention
Required attached drawing is briefly described, and the attached drawing in description is only a part of the embodiment in the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the leftward welding schematic diagram that the present invention uses；
Fig. 2 is welding example 1, welding 2 weld seam of example overlap joint schematic diagram.Steel plate thickness 1.2mm, the overlap width of two steel plates
For 11mm.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 the strong dual phase steel CMT(cold metal transfer of embodiment superelevation) complete welding under mode after, the strong dual phase steel face bonding of superelevation
Connect effect picture；
Fig. 4 is the strong dual phase steel CMT(cold metal transfer of embodiment superelevation) complete welding under mode after, the strong dual phase steel back side weldering of superelevation
Connect effect picture；
Fig. 5 is the strong dual phase steel CMT(cold metal transfer of embodiment superelevation) complete welding under mode after, welding point tensile sample is disconnected
Split figure；
Fig. 6 is the strong dual phase steel back side welding effect of superelevation after completing welding under the strong dual phase steel CMT pulse mode of embodiment superelevation
Figure；
Fig. 7 is the strong dual phase steel back side welding effect of superelevation after completing welding under the strong dual phase steel CMT pulse mode of embodiment superelevation
Figure；
Fig. 8 is welding point tensile sample fracture after completing welding under the strong dual phase steel CMT pulse mode of embodiment superelevation.
Specific embodiment
The present invention is described in detail for illustrated embodiment with reference to the accompanying drawing.
The present invention is to provide a kind of CMT(cold metal transfer of strong dual phase steel of superelevation) and CMT pulse welding technique, comprising:
It is handled under clean experimental situation using surface of the acetone to plate to be processed.Guarantee plate surface to be processed without oil
Dirty, impurity；It is slightly polished using grinding wheel at place to be welded and removes surface oxide layer, guarantee quality of weld joint；Two pieces of superelevation are strong
Dual phase steel overlap joint is placed on testing stand, and the width of the lap of two boards is 8mm ~ 12mm, as far as possible between guarantee steel plate
There is no gap；Utilize CMT(cold metal transfer) control panel of welding machine setting bond pattern, welding gun is put after determining bond pattern
Good position and angle are set on automatic vehicle fixture and adjusted, mobile welding gun is attempted, guarantees that welding gun walks and lap weld exists
On straight line, after determining that test specimen position to be welded and welding gun walk unanimously, start to weld.Welding condition range is as follows:
Using the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode is 8mm ~ 12mm, in CMT(cold metal mistake
Cross) in mode, speed of welding is 350mm/min ~ 600mm/min, and welding current is 104A ~ 178A, weldingvoltage be 10.4V ~
12.2V；In CMT pulse mode, speed of welding is 350mm/min ~ 600mm/min, and welding current is 104A ~ 178A, welding
Voltage is 10.4V ~ 12.2V；In further welding process, use protective gas composition for argon gas and carbon dioxide gas gaseous mixture
As protection gas, gas flow 20L/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.
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 strong dual phase steel CMT(cold metal transfers of superelevation) and CMT pulse welding technique, using thickness
The strong dual phase sheet steel of the superelevation of 1.0mm ~ 1.4mm is welded, and is needed to carry out pre-welding treatment to the strong dual phase sheet steel of superelevation before weldering: be used
Acetone conscientiously wipes the surface of experiment plate, it is therefore an objective to clean the grease stain of plate surface and dust, to protect
Demonstrate,prove the clean of plate.It is slightly polished using grinding wheel at place to be welded and removes surface oxide layer, guarantee quality of weld joint.
The strong dual phase sheet steel of superelevation is placed on experimental bench in the form of overlapped later, the width of steel plate lap is
11mm, welding condition range are as follows:
Using the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode is 8mm ~ 12mm, in the cold gold of CMT(
Belong to transition) in mode, speed of welding is 350mm/min ~ 600mm/min, and welding current is 104A ~ 178A, and weldingvoltage is
10.4V~12.2V；In CMT pulse mode, speed of welding be 350mm/min ~ 600mm/min, welding current be 104A ~
178A, weldingvoltage are 10.4V ~ 12.2V；
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, using protective gas composition is argon gas and carbon dioxide gas gaseous mixture as protection gas, and gas flow is
20L/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. 3-Fig. 8 to the present invention.
Embodiment 1: in CMT(cold metal transfer) under mode.
In the implementation case, CMT(cold metal transfer) welding condition selection are as follows: welding current: 104A, welding electricity
Pressure: 10.4V, speed of welding: 500mm/min.Welding gun is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles.Welding wire
For the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode 10mm.Use protective gas composition for argon gas
With carbon dioxide gas gaseous mixture as protection gas.
The strong dual phase sheet steel of superelevation is formed into lap joint, overlap width is 11mm.Then CMT(cold metal is utilized
Transition) welding machine welded using CMT mode.
In the present embodiment, the weld seam obtained is as shown in figure 3, even weld, Welded lap joint forming are beautiful；Such as Fig. 4
Shown, the back side meets the welding quality requirement that dual phase steel carries out continuous melting weldering without through welding phenomenon；Postwelding carries out the weld seam
Tension tension test, tensile speed 2mm/min measure its tensile strength and reach 13.33kN, as shown in figure 5, stretching experiment is disconnected
Mouth fracture is in the incomplete transformation area of the strong double coherent correlation connector of superelevation.The welding point of this function admirable is fully able to meet
The demand of practical application.
Embodiment 2: under CMT pulse mode.
In the implementation case, CMT(cold metal transfer) welding condition selection are as follows: welding current: 139A, welding electricity
Pressure: 10.4V, speed of welding: 550mm/min.Welding gun is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles.Welding wire
For the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode 10mm.Use protective gas composition for argon gas
With carbon dioxide gas gaseous mixture as protection gas.
The strong dual phase sheet steel of superelevation is formed into lap joint, overlap width is 11mm.Then CMT(cold metal is utilized
Transition) welding machine strobe pulse mode welded.
In the present embodiment, the weld seam obtained is as shown in fig. 6, even weld, Welded lap joint forming are beautiful；Such as Fig. 7
Shown, the back side meets the welding quality requirement that dual phase steel carries out continuous melting weldering without through welding phenomenon；Postwelding carries out the weld seam
Tension test, tensile speed 2mm/min measure its tensile strength and reach 13.40kN, as shown in figure 8, tension test fracture is disconnected
It splits in the incomplete transformation area of the strong double coherent correlation connector of superelevation.The welding point of this function admirable is fully able to meet practical
The demand of application.
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 (4)
1. a kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique, which is characterized in that the technique includes following prepared
Journey:
Firstly, being handled under clean experimental situation using surface of the acetone to experiment plate；Guarantee experiment plate surface
There is no greasy dirt, impurity；It is slightly polished using grinding wheel at place to be welded and removes surface oxide layer, guarantee quality of weld joint；By two pieces
The strong dual phase steel overlap joint of superelevation is placed on testing stand, and the width of the lap of two boards is 8mm ~ 12mm, as far as possible guarantee steel
There is no gap between plate；Utilize CMT(cold metal transfer) control panel of welding machine setting bond pattern, determining will after bond pattern
Welding gun is placed on automatic vehicle fixture and adjusts good position and angle, attempts mobile welding gun, guarantees that welding gun is walked and overlapped
Weld seam point-blank, after determining that test specimen position to be welded and welding gun walk unanimously, starts to weld；Welding condition range
As follows: using the middle alloy melting pole welding wire for gas shielded welding of diameter 1.0mm, dry extension of electrode is 8mm ~ 12mm, welding current
For 104A ~ 178A, weldingvoltage is 10.4V ~ 12.2V, and speed of welding is 350mm/min ~ 600mm/min；Utilize the cold gold of CMT(
Belong to transition) the control panel setting bond pattern (including CMT and CMT pulse both of which) of welding machine, determining will after bond pattern
Welding gun is placed on small vehicle clamper and adjusts good position and angle, and test specimen is placed on testing stand and tries welding tractor of walking about, really
Determine to guarantee there is no gap between steel plate with clamp after position to be welded walks unanimously with welding gun；It is welded using leftward welding
It connects.
2. the strong dual phase steel CMT of a kind of superelevation according to claim 1 and CMT pulse welding technique, which is characterized in that described
Weld alloy melting pole welding wire for gas shielded welding in use；The protective gas of selection is argon gas and carbon dioxide gas gaseous mixture.
3. the strong dual phase steel CMT of a kind of superelevation according to claim 1 and CMT pulse welding technique, which is characterized in that described
Welding procedure uses leftward welding, and welding gun is on the direction vertical with welding direction with steel plate at 70 ° of inclination angles, selection CMT(cold metal
Transition) mode.
4. the strong dual phase steel CMT of a kind of superelevation according to claim 3 and CMT pulse welding technique, which is characterized in that described
Welding current is 104A ~ 178A, and weldingvoltage is 10.4V ~ 12.2V, and speed of welding is 350mm/min ~ 600mm/min, arc length
Correction factor is 0, gas flow 20L/min, dry extension of electrode 8mm ~ 12mm；Select CMT pulse mode, welding current 104A
~ 178A, weldingvoltage are 10.4V ~ 12.2V, and speed of welding is 350mm/min ~ 600mm/min, and arc length correction factor is 0, gas
Body flow 20L/min, dry extension of electrode 8mm ~ 12mm.
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| CN201910529206.6A CN110303221A (en) | 2019-06-19 | 2019-06-19 | A kind of strong dual phase steel CMT of superelevation and CMT pulse welding technique |
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Citations (5)
| 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 |
| 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
- 2019-06-19 CN CN201910529206.6A patent/CN110303221A/en not_active Withdrawn
Patent Citations (5)
| 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 |
| 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》 * |
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