CN104233002A - Nickel base alloy powder for laser repair of supercharger air outlet housing of internal combustion engine - Google Patents
Nickel base alloy powder for laser repair of supercharger air outlet housing of internal combustion engine Download PDFInfo
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- CN104233002A CN104233002A CN201310244908.2A CN201310244908A CN104233002A CN 104233002 A CN104233002 A CN 104233002A CN 201310244908 A CN201310244908 A CN 201310244908A CN 104233002 A CN104233002 A CN 104233002A
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Abstract
The invention discloses nickel base alloy powder for laser repair of a supercharger air outlet housing of an internal combustion engine. The nickel base alloy powder comprises Ni, Cr, Ti and Si and is characterized by also comprising Nb, Y and B, wherein all the components of the nickel base alloy powder are shown as follows (in percentage by mass): 10-15% of Cr, 4-8% of Ti, 0.1-0.4% of Si, 0.3-0.4% of Nb, 0.1-0.2% of Y, 0.5-1% of B and the balance of Ni. The nickel base alloy powder is relatively high in hardness and strength, favorable in toughness, incapable of forming a white cast microstructure when reacting with cast iron and extremely low in crack tendency; the crack resistance, moldability, process stability and component uniformity of the alloy powder are fundamentally improved in the laser cladding process of an air inlet housing; and the requirements for the strength and toughness of laser cladding of the air inlet housing are met.
Description
Technical field
The present invention relates to a kind of alloy powder material being suitable for laser melting coating, particularly relate to a kind of have crack resistance, resistance to high temperature oxidation for internal-combustion engine booster air inlet housing repair Co-based alloy powder, belong to C23C24/10 (2006.01) the I technical field in International Patent Classification (IPC).
Background technology
Supercharging blower is that diesel locomotive improves power, and reduce the visual plant of energy consumption, in supercharging blower, air inlet housing is vitals.Owing to working under 650 ~ 700 DEG C of high temperature, the phenomenon that fatigue causes stress concentration position to ftracture is commonplace.And due to actuator temperature very high, high temperature corrosion can occur with hot gas contact site, this corrosion can cause strength degradation.Once there is crackle or corrosion, the intensity of air inlet housing will be affected, and then has influence on safety, the Effec-tive Function of whole supercharging blower, must change.
Along with the growth requirement of China railways fortune cause, the continuous speedup of diesel locomotive, current most of locomotive all runs under event of overload, the failure rate of the key part supercharging blower in diesel locomotive also constantly increases, and most gas inlet shell needs to change in supercharging blower maintenance process, annual approximately replacing more than 2,000 times, consumes very large.Therefore, select suitable internal-combustion engine booster gas inlet shell restorative procedure and material, ensureing to repair rear internal-combustion engine booster service requirements, is current problem urgently to be resolved hurrily.
Laser melting coating recovery technique, as the re-manufacturing technology of a kind of advanced person, obtains in recent years and promotes rapidly and widespread use.
The feature that laser melting coating recovery technique utilizes high energy laser beam focused energy high, instantaneously by preset at substrate surface or automatically send powdered alloy that put, that have specific physical, chemistry or mechanical property to melt completely with laser synchronization, base material part fusing simultaneously, form a kind of new composite shape matl, rapid solidification after laser beam flying, obtain the fine and close coating with matrix metallurgical binding, to reach the object recovering geometrical dimension and surface strengthening.
What select during fabrication due to air inlet housing is that heat resisting iron material weldability is very poor, conventional restorative procedure is welding, the material selected is generally electrode for cast iron, but these materials all once went wrong, as cracking, whitening, pore, sealing-off etc. in reparation and use procedure.Laser melting coating repair mode can well solve some above Welding Problems, but laser melting coating also needs corresponding powdered material, does not have corresponding material at present on heat resisting iron laser melting coating.The good material of cladding effect on other ferrous metal more in the past, all the defects such as pore can be cracked to this cast iron cladding, therefore for carrying out the reparation of the air inlet housing of internal-combustion engine booster, specially a kind of laser repairing special powder for air-intake of combustion engine shell has been invented through theoretical analysis and test test.
Summary of the invention
The object of the present invention is to provide a kind of have crack resistance, the Co-based alloy powder of the laser repairing oil engine air inlet housing of resistance to high temperature oxidation, for the crackle adopting the method for laser melting coating to repair gas inlet shell.This Co-based alloy powder is on the component base of pure nickel electrode, the high temperature oxidation resistance in cladding region is improved by adding more Cr, matrix grain-boundary strengthening is carried out by the one of at least adding in micro-Nb, Y element, particularly pass through at least one of adding in Ti, B, Si element and carry out alloy substrate strengthening, while this powder has higher hardness, intensity, there is again good toughness and high temperature oxidation resistance, white structure is not formed, the feature that crack tendence is minimum with cast iron effect.
The technical scheme that the present invention provides is: this Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing, and its composition includes Ni, Cr, Ti, Si; Be characterized in also including Nb, Y, B, wherein (mass percent) of each component of Co-based alloy powder is.
Cr：10~15%；Ti：4~8%；Si:0.1~0.4%；Nb：0.3~0.4%。
Y:0.1 ~ 0.2%; B; 0.5 ~ 1%; Ni: surplus.
The present invention provides this Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing, and it preferably forms, and (mass percent) is: Cr:12%; Ti:4%; Si:0.3%; Nb:0.3%; Y:0.2%; B; 0.8%; Ni: surplus.
The present invention provides this Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing, and it preferably forms, and (mass percent) is: Cr:10%; Ti:4%; Si:0.1%; Nb:0.3%; Y:0.1%; B; 0.5%; Ni: surplus.
The present invention provides this Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing, and it preferably forms, and (mass percent) is: Cr:15%; Ti:8%; Si:0.4%; Nb:0.4%; Y:0.2%; B; 1 %; Ni: surplus.
The present invention improves high temperature oxidation resistance by adding Cr element; By selecting alloy substrate strengthening element, grain refining boundary-strengthening element, control the degree of each group element, powdered alloy is made to obtain superior over-all properties, thus there is achieve alloy while moderate hardness, intensity, there is good toughness and high temperature oxidation resistance, form fine and close metallurgical bonding layer with heat resisting iron, crack tendence is minimum, meets the requirement of laser melting coating heat resisting iron.
The Co-based alloy powder that the present invention provides is prepared by operations such as vacuum melting, vacuum aerosolization, screenings, and granularity is-100+270 order.
The Co-based alloy powder that the present invention provides, be applicable to Full solid-state solid laser, in the melting and coating process parameter of repairing the described powdered material of application be: power: 800 ~ 1600W, spot diameter: 2 ~ 3mm, sweep velocity: 10 ~ 30mm/s, puts powder thickness: 0.2 ~ 0.7mm.
Compared with prior art, the invention has the beneficial effects as follows.
1. add alloy substrate strengthening element, grain refining and boundary-strengthening element, and adjust the degree of each element.By strengthening means, reinforced alloys matrix, turn to improves grain boundary quality, makes alloy obtain good over-all properties.Thus there is achieve alloy while higher hardness and intensity, there is again good toughness, white structure is not formed with cast iron effect, crack tendence is minimum, fundamentally solve and improve splitting resistance, formability, technology stability and the homogeneity of ingredients of powdered alloy when laser melting coating gas inlet shell, meeting the intensity of gas inlet shell laser melting coating and the requirement of toughness.
2. by adding relatively large Cr element, improving the high temperature oxidation resistance after this powder laser cladding, ensureing that cladding region does not continue high temperature oxidation occurs under the operating mode of internal combustion engine turbocharger, improving the quality that device is repaired.
3. air inlet housing after repair, detected the requirement of intensity and the tough sexual satisfaction gas inlet shell use all proving this material, repair position and again do not occur crackle by carrying out flaw detection, bench testing and actual motion.
Embodiment
Example 1.
The oil engine air inlet housing of Dalian rolling stock plant, in use, 12 link bolt hole have 5 places to occur crackle, crack length be 5 ~ 30mm not etc.First defect detecting test is carried out, and manual finishing crackle, until all crackles are cleaned out, after flaw detection zero defect, cleaning cleaning position, cleans out all dirts in this region and oxide compound.Be grinding into suitable groove, use this material to carry out laser melting coating.Laser melting coating parameter is that " sweep velocity: 20mm/s, puts powder thickness: 0.5mm for power: 1600W, spot diameter: 3mm." use granularity to be that this powder of 200 objects carries out cladding, composition is: Cr:12%; Ti:4%; Si:0.3%; Nb:0.3%; Y:0.2%; B; 0.8%; Ni: surplus.
After cladding, mechanical workout recovers size and the precision of original screw, reaches design requirements.Detect after zero defect through penetrant inspection, be assembled on experiment table and carry out test run, after test run, dismounting detects, zero defect; Installation, to actual motion on vehicle, again detects after running to certain milimeter number (being 100,000 kilometers), does not still have defect.Prove that toughness and the intensity of this material meet design objective completely, and do not occur high temperature corrosion phenomenon.
Embodiment 2.
Certain model oil engine air inlet housing, in use, there is crackle in edge.First carry out defect detecting test, and manual finishing crackle, until all crackles are cleaned out, after flaw detection zero defect, cleaning cleaning position.Be grinding into suitable groove, use this material to carry out laser melting coating.Laser melting coating parameter is that " sweep velocity: 12mm/s, puts powder thickness: 1mm for power: 900W, spot diameter: 3mm." use granularity to be that this powder of 200 objects carries out cladding, composition is: Cr:10%; Ti:4%; Si:0.1%; Nb:0.3%; Y:0.1%; B; 0.5%; Ni: surplus.
After cladding, mechanical workout recovers size and the precision of original screw, reaches design requirements.Detect after zero defect through penetrant inspection, be assembled on experiment table and carry out test run, after test run, dismounting detects, zero defect.
Embodiment 3.
Certain model oil engine air inlet housing, in use, there is crackle in edge.First carry out defect detecting test, and manual finishing crackle, until all crackles are cleaned out, after flaw detection zero defect, cleaning cleaning position.Be grinding into suitable groove, use this material to carry out laser melting coating.Laser melting coating parameter is that " sweep velocity: 12mm/s, puts powder thickness: 1mm for power: 900W, spot diameter: 3mm." use granularity to be that this powder of 200 objects carries out cladding, composition is: Cr:15%; Ti:8%; Si:0.4%; Nb:0.4%; Y:0.2%; B; 1 %; Ni: surplus.
After cladding, mechanical workout recovers size and the precision of original screw, reaches design requirements.Detect after zero defect through penetrant inspection, be assembled on experiment table and carry out test run, after test run, dismounting detects, zero defect.
Claims (4)
1., for a Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing, its composition includes Ni, Cr, Ti, Si; Be characterized in also including Nb, Y, B, wherein (mass percent) of each component of Co-based alloy powder is:
Cr：10~15%；Ti：4~8%；Si:0.1~0.4%；Nb：0.3~0.4%；
Y:0.1 ~ 0.2%; B; 0.5 ~ 1%; Ni: surplus.
2. the Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing according to claim 1, it is characterized in that (mass percent) of each component of preferred Co-based alloy powder is:
Cr:12%; Ti:4%; Si:0.3%; Nb:0.3%; Y:0.2%; B; 0.8%; Ni: surplus.
3. the Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing according to claim 1, it is characterized in that (mass percent) of each component of preferred Co-based alloy powder is:
Cr:10%; Ti:4%; Si:0.1%; Nb:0.3%; Y:0.1%; B; 0.5%; Ni: surplus.
4. the Co-based alloy powder for internal-combustion engine booster air inlet housing laser repairing according to claim 1, it is characterized in that (mass percent) of each component of preferred Co-based alloy powder is:
Cr:15%; Ti:8%; Si:0.4%; Nb:0.4%; Y:0.2%; B; 1 %; Ni: surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244908.2A CN104233002A (en) | 2013-06-20 | 2013-06-20 | Nickel base alloy powder for laser repair of supercharger air outlet housing of internal combustion engine |
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| CN201310244908.2A CN104233002A (en) | 2013-06-20 | 2013-06-20 | Nickel base alloy powder for laser repair of supercharger air outlet housing of internal combustion engine |
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| CN104233002A true CN104233002A (en) | 2014-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884109A (en) * | 2017-03-13 | 2017-06-23 | 北京大学深圳研究院 | A kind of method of Ni-based multicomponent laser cladding powder and the laser melting coating powder |
| CN107760930A (en) * | 2017-12-07 | 2018-03-06 | 山西鑫盛激光技术发展有限公司 | A kind of semiconductor laser deposited nickel-base alloy powder end for being used to repair centrifugation ball milling pipe die inwall |
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| CN101228295A (en) * | 2005-06-20 | 2008-07-23 | 普莱克斯S.T.技术有限公司 | Laser Deposition on Low Heat Resistant Substrates |
| CN102021567A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Nickel base alloy powder for manufacturing anticorrosive coating of boiler tube |
| CA2688647A1 (en) * | 2009-12-16 | 2011-06-16 | Villares Metals S/A | Wear resistant alloy for high temperature applications |
| WO2012081346A1 (en) * | 2010-12-16 | 2012-06-21 | 福田金属箔粉工業株式会社 | Nickel-based brazing filler metal with excellent heat resistance |
| CN102965665A (en) * | 2012-12-09 | 2013-03-13 | 华北电力大学 | Powdered material used for preparing high-temperature wear-resistant cladding layer and preparation method thereof |
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2013
- 2013-06-20 CN CN201310244908.2A patent/CN104233002A/en active Pending
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| CN101228295A (en) * | 2005-06-20 | 2008-07-23 | 普莱克斯S.T.技术有限公司 | Laser Deposition on Low Heat Resistant Substrates |
| CN102021567A (en) * | 2009-09-23 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Nickel base alloy powder for manufacturing anticorrosive coating of boiler tube |
| CA2688647A1 (en) * | 2009-12-16 | 2011-06-16 | Villares Metals S/A | Wear resistant alloy for high temperature applications |
| WO2012081346A1 (en) * | 2010-12-16 | 2012-06-21 | 福田金属箔粉工業株式会社 | Nickel-based brazing filler metal with excellent heat resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884109A (en) * | 2017-03-13 | 2017-06-23 | 北京大学深圳研究院 | A kind of method of Ni-based multicomponent laser cladding powder and the laser melting coating powder |
| CN107760930A (en) * | 2017-12-07 | 2018-03-06 | 山西鑫盛激光技术发展有限公司 | A kind of semiconductor laser deposited nickel-base alloy powder end for being used to repair centrifugation ball milling pipe die inwall |
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Application publication date: 20141224 |