CN102248265A - Method for performing surface cladding by adopting metal-inert gas (MIG) welding - Google Patents
Method for performing surface cladding by adopting metal-inert gas (MIG) welding Download PDFInfo
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- CN102248265A CN102248265A CN2011101671724A CN201110167172A CN102248265A CN 102248265 A CN102248265 A CN 102248265A CN 2011101671724 A CN2011101671724 A CN 2011101671724A CN 201110167172 A CN201110167172 A CN 201110167172A CN 102248265 A CN102248265 A CN 102248265A
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Abstract
The invention provides a method for performing surface cladding by adopting metal-inert gas (MIG) welding and relates to a surface cladding method. By the method, the problems of high porosity and low strength of the surface coating tissue prepared by the conventional surface coating technique and low quality of a cladding layer are solved. The method comprises the following steps of: 1, using an MIG welding machine, placing a metal base to be cladded on a workbench, jointing a welding wire, introducing the welding wire into a conductive nozzle of an MIG welding gun, and introducing protective gas; and 2, switching on a continuous pulse MIG welding power supply, turning on the MIG welding machine, adjusting current and welding speed, feeding the wire, arcing, moving the metal base or the welding gun and welding sequentially to finish surface cladding of the metal base. The cladding layer obtained by the method is bound with a base body tightly; the porosity is less than 2 percent; the bonding strength is close to or higher than the strength of the coating material; the coating adhesive force is large; and the quality of the cladding layer is high. The method is applied in the technical fields of surface coating and cladding.
Description
Technical field
The present invention relates to a kind of method of surface cladding.
Background technology
The face coat technology can be organically combines the characteristics of base material and face coat, bring into play the comprehensive advantage of two class materials, satisfy the needs wear-resisting, anti-corrosion, high temperature resistant etc. simultaneously, obtain quite desirable composite structure structural behaviour intensity, toughness etc. and environmental performance.
Face coat technology commonly used at present has plasma spray technology and laser cladding method.The face coat of plasma spray technology preparation organizes porosity higher, is 5%~15%, make oxygen by the time diffusion very fast, unfavorable to antioxygenic property, and internal stress is higher relatively, intensity is relatively low.Laser cladding method is because in laser treatment process, coating is by Fast Heating, fusing, sharply cooling again then, belong to nonequilibrium freezing, and the differing greatly of coating material and matrix material, it is more to add in the laser treatment process influence factor, causes coating quality wayward, the result is everlasting and some defective occurs in the coating, as pore, crackle, scaling loss etc.
Summary of the invention
The present invention is that the face coat that will solve existing face coat technology preparation organizes porosity higher, and intensity is low, and the ropy problem of cladding layer provides a kind of MIG of employing to weld the method for carrying out surface cladding.
The present invention adopts MIG weldering to carry out the method for surface cladding, carries out according to the following steps: one, use the MIG welding machine, the mother metal for the treatment of cladding is put into workbench, insert welding wire, welding wire is fed ignition tip in the MIG welding gun, feed protective gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 70~130A, and speed of welding is 1.2m/min, wire feed, and wire feed rate is 3~7m/s, the starting the arc, mobile mother metal or welding gun weld successively, promptly finish the surface cladding of mother metal; Wherein welding wire described in the step 1 is the low-melting alloy silk, and the fusing point of alloy silk is 150~500 ℃.
The present invention adopts the method for MIG weldering carrying out surface cladding to compare with existing method, and in conjunction with tight, porosity is lower than 2% between cladding layer and the matrix, and bond strength is close to or higher than the intensity of coating material own, the coating adhesion height, and the cladding layer quality is good.The present invention can adopt single electrode MIG weldering, also can adopt multielectrode multifibres MIG weldering; But and large tracts of land cladding, multilayer cladding, but also compartment cladding.
Description of drawings
Fig. 1 is a surface cladding method schematic diagram in the specific embodiment one; Use two wire feeders feeding method schematic diagram of wire feed simultaneously in Fig. 2 specific embodiment eight; Fig. 3 is the mother metal surface fused coating schematic diagram of the specific embodiment eight described large tracts of land claddings; Fig. 4 realizes the mother metal surface fused coating schematic diagram of large tracts of land cladding for the specific embodiment ten described modes with the interval cladding.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: present embodiment adopts the method for MIG weldering carrying out surface cladding, carry out according to the following steps: one, use the MIG welding machine, the mother metal for the treatment of cladding is put into workbench, insert welding wire, welding wire is fed ignition tip in the MIG welding gun, feed protective gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 70~130A, and speed of welding is 1.2m/min, wire feed, and wire feed rate is 3~7m/s, the starting the arc, mobile mother metal or welding gun weld successively, promptly finish the surface cladding of mother metal; Wherein welding wire described in the step 1 is the low-melting alloy silk, and the fusing point of alloy silk is 150~500 ℃.
The cladding method schematic diagram of present embodiment comprises two motors as shown in Figure 1 in the MIG welding machine, the walking of one of them Electric Machine Control welding gun, the motion of another Electric Machine Control mother metal.1 is leading screw among Fig. 1, and 2 is motor A, and 3 is support, and 4 is wire feeder, and 5 are protection gas, and 6 is nozzle, and 7 is electric arc, and 8 is the MIG source of welding current, and 9 is motor B, and 10 is driver, controller.
Any and mother metal low-melting alloy silk good wet can adopt the method for present embodiment to carry out surface cladding.
In conjunction with tight, porosity is lower than 2% between cladding layer that the method for employing present embodiment obtains and the matrix, and bond strength is higher, the coating adhesion height, and the cladding layer quality is good.
The specific embodiment two: what present embodiment and the specific embodiment one were different is: protective gas is pure Ar gas or contains 5% (volume) H in the step 1
2Ar gas.Other is identical with the specific embodiment one.
The specific embodiment three: what present embodiment was different with the specific embodiment one or two is: regulating electric current in the step 2 is 90~110A.Other is identical with the specific embodiment one or two.
The specific embodiment four: what present embodiment was different with the specific embodiment one or two is: regulating electric current in the step 2 is 100A.Other is identical with the specific embodiment one or two.
The specific embodiment five: what present embodiment was different with one of specific embodiment one to four is: wire feed rate is 4~6m/s in the step 2.Other is identical with one of specific embodiment one to four.
The specific embodiment six: what present embodiment was different with one of specific embodiment one to four is: wire feed rate is 5m/s in the step 2.Other is identical with one of specific embodiment one to four.
The specific embodiment seven: what present embodiment was different with one of specific embodiment one to six is: wire feed described in the step 2 is for using a wire feeder wire feed or using two wire feeders wire feed simultaneously.Other is identical with one of specific embodiment one to six.
The specific embodiment eight: present embodiment adopts the method for MIG weldering carrying out surface cladding, carry out according to the following steps: one, use the MIG welding machine, the mother metal Q235 steel for the treatment of cladding is put into workbench, insert welding wire, welding wire is fed ignition tip in the MIG welding gun, feed the pure Ar of protective gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 90A, and speed of welding is 1.2m/min, wire feed, and wire feed rate is 5m/s, the starting the arc, it is motionless that mother metal keeps, and makes the welding gun translation, welds successively, promptly finishes the surface cladding of mother metal; Wherein welding wire described in the step 1 is the tin-base babbit silk.
Wire feed described in the present embodiment step 2 is for using two wire feeders wire feeds simultaneously, its schematic diagram as shown in Figure 2,11 is a wire feeder among Fig. 2,12 is another wire feeder, 13 is a MIG source of welding current, 14 is another MIG source of welding current.
The described tin-base babbit silk of present embodiment contains antimony 3%~15%, copper 1%~5%, cadmium<1%, the tin of silver 0.5%~2% and surplus.
Present embodiment can realize the large tracts of land cladding, and the mother metal surface fused coating schematic diagram after the cladding as shown in Figure 3.
In conjunction with tight, porosity is lower than 2% between cladding layer that the method for employing present embodiment obtains and the matrix, and bond strength is higher, the coating adhesion height, and the cladding layer quality is good.
The specific embodiment nine: present embodiment adopts the method for MIG weldering carrying out surface cladding, carry out according to the following steps: one, use the MIG welding machine, the mother metal Q215 steel for the treatment of cladding is put into workbench, insert welding wire, welding wire is fed ignition tip in the MIG welding gun, feed the pure Ar of protective gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 80A, and speed of welding is 1.2m/min, wire feed, and wire feed rate is 4m/s, the starting the arc, it is motionless that welding gun keeps, and makes the mother metal translation, welds successively, promptly finishes the surface cladding of mother metal; Wherein welding wire described in the step 1 is the tin-base babbit silk.
The described tin-base babbit silk of present embodiment contains antimony 3%~15%, copper 1%~5%, cadmium<1%, the tin of silver 0.5%~2% and surplus.
Present embodiment can realize the multilayer cladding.
In conjunction with tight, porosity is lower than 2% between cladding layer that the method for employing present embodiment obtains and the matrix, and bond strength is higher, the coating adhesion height, and the cladding layer quality is good.
The specific embodiment ten: present embodiment adopts the method for MIG weldering carrying out surface cladding; carry out according to the following steps: one, use the MIG welding machine; the mother metal Q235 steel for the treatment of cladding is put into workbench; insert welding wire; welding wire is fed ignition tip in the MIG welding gun, feed protective gas for containing 5% (volume) H
2Ar gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 100A, speed of welding is 1.2m/min, wire feed, wire feed rate are 6m/s, the starting the arc, cladding for the first time: mother metal keeps motionless, make the welding gun translation, weld successively, cladding for the second time: mother metal keeps motionless, make welding gun move on to not the cladding zone and weld, promptly finish the surface cladding of mother metal; Wherein welding wire described in the step 1 is the tin-base babbit silk.
The described tin-base babbit silk of present embodiment contains antimony 3%~15%, copper 1%~5%, cadmium<1%, the tin of silver 0.5%~2% and surplus.
Present embodiment realizes large-area cladding in the mode of interval cladding, the mother metal surface fused coating schematic diagram after the cladding as shown in Figure 4, dashed region is represented cladding for the first time among Fig. 4, the cladding for the second time of solid region domain representation.
In conjunction with tight, porosity is lower than 2% between cladding layer that the method for employing present embodiment obtains and the matrix, and bond strength is higher, the coating adhesion height, and the cladding layer quality is good.
Claims (7)
1. one kind is adopted MIG to weld the method for carrying out surface cladding, it is characterized in that adopting the method for MIG weldering carrying out surface cladding, carry out according to the following steps: one, use the MIG welding machine, the mother metal for the treatment of cladding is put into workbench, insert welding wire, welding wire is fed ignition tip in the MIG welding gun, feed protective gas; Two, connect the continuous impulse MIG source of welding current, open the MIG welding machine, the adjusting electric current is 70~130A, and speed of welding is 1.2m/min, wire feed, and wire feed rate is 3~7m/s, the starting the arc, mobile mother metal or welding gun weld successively, promptly finish the surface cladding of mother metal; Wherein welding wire described in the step 1 is the low-melting alloy silk, and the fusing point of alloy silk is 150~500 ℃.
2. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 1 is characterized in that protective gas is pure Ar gas or contains 5% (volume) H in the step 1
2Ar gas.
3. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 1 and 2 is characterized in that regulating electric current in the step 2 is 90~110A.
4. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 1 and 2 is characterized in that regulating electric current in the step 2 is 100A.
5. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 3 is characterized in that wire feed rate is 4~6m/s in the step 2.
6. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 3 is characterized in that wire feed rate is 5m/s in the step 2.
7. the method for a kind of MIG of employing weldering carrying out surface cladding according to claim 5 is characterized in that wire feed described in the step 2 is for using a wire feeder wire feed or using two wire feeders wire feed simultaneously.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103586567A (en) * | 2013-11-14 | 2014-02-19 | 上海沈达空调配件厂(普通合伙) | Method for fusion covering of shaped metal clad plate by adoption of gas shield welding manner |
CN105935828A (en) * | 2016-05-30 | 2016-09-14 | 重庆理工大学 | Electric arc three-dimensional rapid forming and manufacturing method based on pulse current forcible molten drop transition |
CN106994546A (en) * | 2017-05-11 | 2017-08-01 | 江苏阿斯美特精工科技有限公司 | The common molten bath arc increasing material manufacturing TIG welding guns of multifibres and welder and increasing material manufacturing method |
CN112222575A (en) * | 2020-09-03 | 2021-01-15 | 江苏科技大学 | Sliding bearing bush material and preparation method thereof |
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JPS6462279A (en) * | 1987-09-01 | 1989-03-08 | Kyodo Sanso | Mig welding method for al and al alloy |
JP2003320457A (en) * | 2002-04-26 | 2003-11-11 | Nippon Steel Corp | Method for mig welding titanium and titanium alloy |
CN1751834A (en) * | 2005-10-20 | 2006-03-29 | 武汉理工大学 | Magnetic control melting electrode welding method, and its developed application, and its universal equipment |
CN101032788A (en) * | 2007-04-28 | 2007-09-12 | 罗键 | Consumable electrode surfacing method of electromagnetic complex field, and the device and extension application thereof |
CN101733525A (en) * | 2009-11-30 | 2010-06-16 | 哈尔滨工业大学 | Method for overlaying SiCp/Al composite material coating by melting pole inert-gas protective arc welding |
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2011
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Patent Citations (5)
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JPS6462279A (en) * | 1987-09-01 | 1989-03-08 | Kyodo Sanso | Mig welding method for al and al alloy |
JP2003320457A (en) * | 2002-04-26 | 2003-11-11 | Nippon Steel Corp | Method for mig welding titanium and titanium alloy |
CN1751834A (en) * | 2005-10-20 | 2006-03-29 | 武汉理工大学 | Magnetic control melting electrode welding method, and its developed application, and its universal equipment |
CN101032788A (en) * | 2007-04-28 | 2007-09-12 | 罗键 | Consumable electrode surfacing method of electromagnetic complex field, and the device and extension application thereof |
CN101733525A (en) * | 2009-11-30 | 2010-06-16 | 哈尔滨工业大学 | Method for overlaying SiCp/Al composite material coating by melting pole inert-gas protective arc welding |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103586567A (en) * | 2013-11-14 | 2014-02-19 | 上海沈达空调配件厂(普通合伙) | Method for fusion covering of shaped metal clad plate by adoption of gas shield welding manner |
CN105935828A (en) * | 2016-05-30 | 2016-09-14 | 重庆理工大学 | Electric arc three-dimensional rapid forming and manufacturing method based on pulse current forcible molten drop transition |
CN105935828B (en) * | 2016-05-30 | 2017-11-07 | 重庆理工大学 | A kind of electric arc three-dimensional rapid forming manufacture method based on the pulse current pressure droplet transfer |
CN106994546A (en) * | 2017-05-11 | 2017-08-01 | 江苏阿斯美特精工科技有限公司 | The common molten bath arc increasing material manufacturing TIG welding guns of multifibres and welder and increasing material manufacturing method |
CN112222575A (en) * | 2020-09-03 | 2021-01-15 | 江苏科技大学 | Sliding bearing bush material and preparation method thereof |
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Application publication date: 20111123 |