CN102019505A - Method for laser cladding by using laser cladding welding wire - Google Patents
Method for laser cladding by using laser cladding welding wire Download PDFInfo
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- CN102019505A CN102019505A CN2009101874030A CN200910187403A CN102019505A CN 102019505 A CN102019505 A CN 102019505A CN 2009101874030 A CN2009101874030 A CN 2009101874030A CN 200910187403 A CN200910187403 A CN 200910187403A CN 102019505 A CN102019505 A CN 102019505A
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Abstract
The invention discloses a method for laser cladding by using a laser cladding welding wire. The method is characterized in that the welding wire passes through a high-frequency induction coil at uniform speed for preheating before entering a weld pool and the uniform preheating of the welding wire can be ensured; in the laser cladding process, the welding wire enters the weld pool in a preheating state at the preheating temperature of 100-800DEG C; on parts made of carbon steel, structural steel, hardened and tempered steel, stainless steel and other materials, the welding wire made of cladding iron-based alloy material comprises the following cladding technical parameters: the power is 1,800-3,800W, the focal distance is 32-400mm, the spot diameter is 3-6mm, the scanning speed is 240-600mm/min and the wire feeding speed is 600-1,000mm/min. By using the welding wire as welding flux for laser cladding, the invention not only utilizes the excellent performances of laser cladding, but also solves the problem of high cost brought by alloy powder, effectively reduces the cost and greatly propels the development of the laser cladding technology.
Description
Technical field:
The present invention relates to a kind of laser cladding method, particularly relate to a kind of reliably, use laser melting coating welding wire that applicability is wide carries out the method for laser melting coating, belongs to C23C24/10 (2006.01) the I technical field in the IPC International Patent Classification (IPC).
Background technology:
In present welding procedure, some insurmountable problems are all arranged as traditional welding technologies such as electric welding, argon arc weldings.Such as: from the materialogy angle, the heat affected area of mother metal is very big, cause welding the back and form a very dark phase change zone to mother metal inside from weld seam, very easily form some thick textures (as: Wei Shi body etc.) in this zone, and these tissues are easy to cause generation of defects such as crackle, thereby destroy the whole mechanical property of mother metal, cause workpiece to damage or shorten service life; From the angle of machinery assembling, workpiece can inevitably produce big thermal deformation, and it is very difficult or may not recover primary standard to recover the former design standard of workpiece, problem such as cause the workpiece effective utilization to descend or directly to scrap.
And laser melting coating along with improving constantly of laser power and stability, has obtained rapid popularization and extensive use as a kind of advanced person's re-manufacturing technology.Because the fast cold miniature smelting feature of the fast heat of the uniqueness of laser melting coating, its outstanding characteristics are that the mother metal heat affected area is very little, and workpiece does not have thermal deformation substantially.Therefore, laser melting coating has solved many conventional methods and has been difficult to the problem that processing maybe can't be processed, and making for product provides a kind of technology uniqueness, advanced effective method again.
But laser melting coating is because the process characteristic of himself causes present scolder based on various alloy powders.And the problem of using alloy powder is that the preparation cost of alloy powder is higher and utilization rate is not high, makes that the cost of present laser melting coating is higher.Therefore, the use laser melting coating welding wire that can effectively solve laser melting coating cost problem carries out laser melting coating and finishes that part of appliance is repaired or anticorrosion process, will have extensive market prospects.
Retrieve verification through the applicant: use the laser melting coating welding wire to carry out laser melting coating and finish that part of appliance is repaired or anticorrosion process, domestic beyond example is not still seen relevant report abroad yet.Therefore, seek out suitable use laser melting coating welding wire and carry out laser melting coating and finish that part of appliance is repaired or corrosion-resistant technology, still need the those skilled in the art further to make creationary research work.
Summary of the invention:
The objective of the invention is to solve the problem that prior art exists, provide a kind of use laser melting coating welding wire that reliably, has an applicability to carry out the method for laser melting coating.This method is used the scolder of welding wire as laser melting coating, not only utilized laser melting coating premium properties but also solved the expensive problem of using alloy powder to bring, effectively reduced cost, promoted the development of laser melting and coating technique greatly, application prospect is extremely wide.
The technical scheme that the present invention provides is: this use laser melting coating welding wire carries out the method for laser melting coating, is characterized in
1. welding wire at the uniform velocity passes radio-frequency induction coil and carries out preheating before entering the molten bath, guarantee that the welding wire preheating is even, laser melting coating is different from traditional manual build up welding mode, is a continuous uninterrupted process, therefore welding wire must carry out preheating at the volley, and will guarantee that the welding wire preheating is even;
2. in laser cladding process, welding wire enters the molten bath under preheat mode, preheat temperature is: 100～800 ℃, so that welding wire self has carried lot of energy when entering the molten bath, in the process of fusing, can not absorb lot of energy from hot spot again, make hot spot can fully melt the mother metal surface and form the molten bath, form metallurgical binding thereby allow welding wire and mother metal fully smelt.And preheating makes the welding wire deliquescing, the easier less molten bath of area that enters, thereby the processability of assurance cladding layer;
3. on the parts of materials such as carbon steel, structural steel, quenched and tempered steel and stainless steel, the melting and coating process parameter of the welding wire that the cladding ferrous alloy material is made is: power: 1800～3800W, focal length: 320～400mm, spot diameter: 3～6mm, sweep speed: 240～600mm/min, wire feed rate: 600～1000mm/min;
The equipment that in cladding operation, adopts: 2000～5000W continuous CO that flows over
2Laser instrument, automatic feeding machine, Efco-Northrup furnace.
The equipment that in the laser melting coating of technique scheme, adopts: 2000～5000W continuous CO that flows over
2Laser instrument, automatic feeding machine, Efco-Northrup furnace are the general professional equipment of the existing industry.
Using the laser melting coating welding wire in the laser melting coating of technique scheme, is to adopt the alloy material of existing laser melting coating to make.
Compared with prior art, the invention has the beneficial effects as follows: use the scolder of welding wire as laser melting coating, not only utilized laser melting coating premium properties but also solved the expensive problem of using alloy powder to bring, effectively reduced cost, promoted the development of laser melting and coating technique greatly, application prospect is extremely wide.
The specific embodiment:
Embodiment 1:
The mother metal that present embodiment is selected for use is a roll bending machine aided winding up roller (42CrMo).The roller surface processes with wheel grinding, and surface roughness Ra=0.5 μ m cleans up with acetone before the cladding.Selected wire feed rate 800mm/min, preheat temperature is 500 ℃, adjusts wire-feed motor and high-frequency induction equipment to duty.The melting and coating process parameter of the welding wire that the cladding ferrous alloy material is made is: power: 1800～3800W, focal length: 320～400mm, spot diameter: 3～6mm.
Through laser melting coating, the cladding layer thickness that obtains about 1mm, the cladding layer surfacing, defectives such as flawless, pore, cladding layer and mother metal are combined into metallurgical binding, combination property is good.
Embodiment 2:
The mother metal that present embodiment is selected for use is the 45# steel workpiece.Surface of the work is processed with wheel grinding, and surface roughness Ra=0.5 μ m cleans up with acetone before the cladding.Selected wire feed rate 1000mm/min, preheat temperature is 300 ℃, adjusts wire-feed motor and high-frequency induction equipment to duty.The melting and coating process parameter of the welding wire that the cladding ferrous alloy material is made is: power: 1800～3800W, focal length: 320～400mm, spot diameter: 3～6mm.
Through laser melting coating, the cladding layer thickness that obtains about 1mm, the cladding layer surfacing, defectives such as flawless, pore, cladding layer and mother metal are combined into metallurgical binding, combination property is good.
Claims (1)
1. method of using the laser melting coating welding wire to carry out laser melting coating is characterized in that:
(1) welding wire at the uniform velocity passes radio-frequency induction coil and carries out preheating before entering the molten bath, guarantees that the welding wire preheating is even;
(2) in laser cladding process, welding wire enters the molten bath under preheat mode, and preheat temperature is: 100～800 ℃;
(3) on the parts of materials such as carbon steel, structural steel, quenched and tempered steel and stainless steel, the melting and coating process parameter of cladding iron-based welding wire is: power: 1800～3800W, focal length: 320～400mm, spot diameter: 3～6mm, sweep speed: 240～600mm/min, wire feed rate: 600～1000mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101874030A CN102019505A (en) | 2009-09-17 | 2009-09-17 | Method for laser cladding by using laser cladding welding wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101874030A CN102019505A (en) | 2009-09-17 | 2009-09-17 | Method for laser cladding by using laser cladding welding wire |
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| CN102019505A true CN102019505A (en) | 2011-04-20 |
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| CN2009101874030A Pending CN102019505A (en) | 2009-09-17 | 2009-09-17 | Method for laser cladding by using laser cladding welding wire |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588879A (en) * | 2014-12-16 | 2015-05-06 | 天津滨海雷克斯激光科技发展有限公司 | Pulse laser welding technology for precise coupling part |
| CN105624672A (en) * | 2015-12-30 | 2016-06-01 | 无锡透平叶片有限公司 | Method for preventing turbine blade from water erosion through wire heating and laser cladding |
| CN108472712A (en) * | 2016-01-14 | 2018-08-31 | 奥科宁克公司 | Method for producing forging product and other converted products |
| CN110744198A (en) * | 2018-07-19 | 2020-02-04 | 林肯环球股份有限公司 | Laser hot wire additive deposition head with omnidirectional construction path |
| CN115044904A (en) * | 2022-07-05 | 2022-09-13 | 长沙理工大学 | Additive manufacturing method of high-strength high-work-hardening stainless steel |
| CN115747786A (en) * | 2022-09-17 | 2023-03-07 | 兰州城市学院 | Enhancement treatment method for laser cladding of ultra-thick material at X80 steel welding joint |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588879A (en) * | 2014-12-16 | 2015-05-06 | 天津滨海雷克斯激光科技发展有限公司 | Pulse laser welding technology for precise coupling part |
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| CN108472712A (en) * | 2016-01-14 | 2018-08-31 | 奥科宁克公司 | Method for producing forging product and other converted products |
| CN110744198A (en) * | 2018-07-19 | 2020-02-04 | 林肯环球股份有限公司 | Laser hot wire additive deposition head with omnidirectional construction path |
| CN115044904A (en) * | 2022-07-05 | 2022-09-13 | 长沙理工大学 | Additive manufacturing method of high-strength high-work-hardening stainless steel |
| CN115747786A (en) * | 2022-09-17 | 2023-03-07 | 兰州城市学院 | Enhancement treatment method for laser cladding of ultra-thick material at X80 steel welding joint |
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Application publication date: 20110420 |