CN101347857B - Production method for improving wearing resistance of plasma arc surfacing - Google Patents
Production method for improving wearing resistance of plasma arc surfacing Download PDFInfo
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- CN101347857B CN101347857B CN2007100122009A CN200710012200A CN101347857B CN 101347857 B CN101347857 B CN 101347857B CN 2007100122009 A CN2007100122009 A CN 2007100122009A CN 200710012200 A CN200710012200 A CN 200710012200A CN 101347857 B CN101347857 B CN 101347857B
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- welding
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- surfacing
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- plasma arc
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Abstract
The invention discloses a production method for improving the wear resistance of plasma arc surfacing, which relates to the improvement of a welding processing method of plasma arc surfacing. Based on common surfacing alloy, the invention changes the crystallization process of a surfacing layer by applied magnetic field, and controls the distribution pattern of hard phase in the surfacing layer, thus improving the wear resistance of the surfacing layer. The invention comprises power supply equipment, which is characterized in that the power supply equipment is connected with coils arranged in a braced frame by wires. A plasma welding torch can weld under the action of magnetic lines of force of the coils.
Description
Technical field:
The present invention relates to the improvement of plasma arc surfacing welding processing.
Background technology:
Wearing and tearing are one of three kinds of main failure forms of material, and the economic loss that it causes is very huge.Point out in the portion report that US Congress proposes in American National material policy committee: because the loss that fretting wear causes makes the annual a huge sum of money of paying 1,000 hundred million dollars of America's economy, the material in this loss partly is about 20,000,000,000 dollars; In the once investigation of preceding Germany in 1996, point out: because the estimated amount of damage that fretting wear causes is 38,700,000,000 marks; In Britain,, be equivalent to 1.1% of nineteen sixty-five gross national product because the economic loss that fretting wear causes is at least more than 51,500 ten thousand pounds every year.The economic loss that China causes fretting wear has been carried out comprehensively investigation and analysis completely, points out annual at least 1.8% of the gross national product that accounts for of this loss.Patent by the loose well integer application of Mitsubishi Heavy Industry Ltd.: the dusty material and the powder plasma built-up welding added metal that are used for powder plasma body built-up welding welding; Application number is 99801813.9; It mainly is the performance of assigning to improve overlay cladding through the one-tenth of regulating the hardfacing alloy powder; Make the applied environment of hardfacing alloy powder obtain expansion, and obtained good overlay cladding performance.But because this patent is the composition that changes the hardfacing alloy powder, and the price of metal dust significantly rises now, so this rises the built-up welding cost, has limited the application and the popularization of invention.
Summary of the invention:
The present invention is on the basis of hardfacing alloy commonly used, through the crystallization process of externally-applied magnetic field change overlay cladding, and the distributional pattern of hard phase in the control overlay cladding, and then the anti-wear performance of raising overlay cladding.
The present invention adopts following technical scheme, the present invention includes supply unit, it is characterized in that supply unit passes through lead and links to each other with the coil in the support frame; Plasma (welding) torch welds under the magnetic line of force effect that coil produces.
Beneficial effect of the present invention:
1, can be through the function composite by electromagnetic stirring in magnetic field, effectively the tissue of refinement overlay cladding makes and the even tissue refinement improves the whole physical property of overlay cladding.
2, through the electromagnetic action in magnetic field, control quantity, size, shape and the distributional pattern of hard phase in the overlay cladding, and make that the section hexagonal vertical of hard phase is surperficial in overlay cladding, improve the overall wear resistance ability of overlay cladding.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment:
The present invention includes supply unit 1, supply unit 1 links to each other with the coil in the support frame 65 through lead 7; Plasma (welding) torch 8 welds under the magnetic line of force effect that coil 5 produces.
Silicon steel sheet 10 can be set in coil 5; Increase magnetic field intensity with this.
Coil 5 is enclosed within the outer surface of the plasma (welding) torch 8 that links to each other with cable 9 and is fixed on the corresponding feed arrangement with support frame 6, the integral body of coil 5 of the present invention be placed on workpiece 4 directly over, and adjusting distance between the two as required.During use; At first connect the supply unit 1 of welding machine equipment; Start welding machine; The switch 2 of opening magnetic field power supply device 1 subsequently makes coil 5 energisings and produces corresponding magnetic field, lets plasma (welding) torch 8 contact with workpiece 4 then and carries out the starting the arc 3, welds through moving 8 pairs of workpiece 4 of plasma (welding) torch subsequently.In the process of welding, the weld seam of plasma (welding) torch 8 and workpiece 4 is among the magnetic field all the time.
Table 1 optimum welding process parameter
Table 2-table 12 is performance variation of overlay cladding under the different magnetic field parameter
Joint performance under the table 2 different magnetic field parameter role
Table 3 field frequency f=5Hz, surfacing layer metal hardness and wear extent are with the variation in magnetic field
Table 4 field frequency f=10Hz, surfacing layer metal hardness and wear extent are with the variation in magnetic field
Table 5 field frequency f=15Hz, surfacing layer metal hardness and wear extent are with the variation in magnetic field
Table 6 field frequency f=20Hz, surfacing layer metal hardness and wear extent are with the variation in magnetic field
Under the effect of table 7 D.C. magnetic field, surfacing layer metal hardness and wear extent are with the variation of field supply
During table 8 field supply I=1A, the hardness and the wear extent of overlay cladding under the different field frequency effects
During table 9 field supply I=2A, the hardness and the wear extent of overlay cladding under the different field frequency effects
During table 10 field supply I=3A, the hardness and the wear extent of overlay cladding under the different field frequency effects
During table 11 field supply I=4A, the hardness and the wear extent of overlay cladding under the different field frequency effects
During table 12 field supply I=5A, the hardness and the wear extent of overlay cladding under the different field frequency effects
Claims (1)
1. a production method that improves wearing resistance of plasma arc surfacing comprises supply unit (1), and supply unit (1) links to each other through the coil (5) in the same support frame of lead (7) (6); Plasma (welding) torch (8) welds under the magnetic line of force effect that coil (5) produces, and silicon steel sheet (10) is set in coil (5); The DC current that it is characterized in that producing the magnetic line of force is that 3 amperes or the alternating current that produces the magnetic line of force are that 3 amperes, field frequency are f=20Hz; Optimum welding process parameter: the welding current of plasma (welding) torch (8) is 90A, and argon flow amount is 6Lmin
-1, the gait of march of plasma (welding) torch (8) is 100mmmin
-1, tungsten electrode is 1.5～3mm apart from the height of workpiece, and nozzle diameter is 13mm, and the tungsten electrode diameter is 2.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100122009A CN101347857B (en) | 2007-07-20 | 2007-07-20 | Production method for improving wearing resistance of plasma arc surfacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100122009A CN101347857B (en) | 2007-07-20 | 2007-07-20 | Production method for improving wearing resistance of plasma arc surfacing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101347857A CN101347857A (en) | 2009-01-21 |
| CN101347857B true CN101347857B (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100122009A Expired - Fee Related CN101347857B (en) | 2007-07-20 | 2007-07-20 | Production method for improving wearing resistance of plasma arc surfacing |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056486B (en) * | 2013-01-06 | 2015-02-25 | 昆山众备机械设备有限公司 | Numerical control surfacing process applied to TBM (tunnel boring machine) cutters |
| CN105127570A (en) * | 2015-09-08 | 2015-12-09 | 刘文斌 | Weld joint processing method and device |
| CN108866544B (en) * | 2018-07-20 | 2020-08-07 | 合肥工业大学 | WC (wolfram carbide) enhanced Fe-based coating and preparation method thereof |
| CN109732183B (en) * | 2019-01-21 | 2020-12-29 | 湘潭大学 | Magnetic control plasma arc additive manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5379941A (en) * | 1991-12-16 | 1995-01-10 | Partel; Robert | Electromagnetic feed device for variable forward motion of solder wire or welding wire in a soldering iron or welding gun |
| CN2301780Y (en) * | 1997-08-05 | 1998-12-23 | 蓝小全 | Energy-saving ring core welder |
| CN1369347A (en) * | 2002-03-22 | 2002-09-18 | 北京工业大学 | Magnetically controlled mixed gas protected consumable-electrode weld (MAG) with high deposition coefficient and its special equipment |
| CN1621192A (en) * | 2004-12-23 | 2005-06-01 | 北京工业大学 | Magnetic field assistant laser welding device |
-
2007
- 2007-07-20 CN CN2007100122009A patent/CN101347857B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5379941A (en) * | 1991-12-16 | 1995-01-10 | Partel; Robert | Electromagnetic feed device for variable forward motion of solder wire or welding wire in a soldering iron or welding gun |
| CN2301780Y (en) * | 1997-08-05 | 1998-12-23 | 蓝小全 | Energy-saving ring core welder |
| CN1369347A (en) * | 2002-03-22 | 2002-09-18 | 北京工业大学 | Magnetically controlled mixed gas protected consumable-electrode weld (MAG) with high deposition coefficient and its special equipment |
| CN1621192A (en) * | 2004-12-23 | 2005-06-01 | 北京工业大学 | Magnetic field assistant laser welding device |
Non-Patent Citations (1)
| Title |
|---|
| JP昭63-90366A 1988.04.21 |
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| CN101347857A (en) | 2009-01-21 |
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Application publication date: 20090121 Assignee: Shenyang Swat Auto Parts Co., Ltd. Assignor: Shenyang University of Technology Contract record no.: 2013210000018 Denomination of invention: Production method for improving wearing resistance of plasma arc surfacing Granted publication date: 20120208 License type: Exclusive License Record date: 20130327 |
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Granted publication date: 20120208 Termination date: 20130720 |