CN102337534A - Technology of extending service life of packer with wear resistant metal spray welding cladding layer - Google Patents
Technology of extending service life of packer with wear resistant metal spray welding cladding layer Download PDFInfo
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- CN102337534A CN102337534A CN2010102284777A CN201010228477A CN102337534A CN 102337534 A CN102337534 A CN 102337534A CN 2010102284777 A CN2010102284777 A CN 2010102284777A CN 201010228477 A CN201010228477 A CN 201010228477A CN 102337534 A CN102337534 A CN 102337534A
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- cladding layer
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- resistant metal
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Abstract
The invention discloses technology of extending the service life of a packer with a wear resistant metal spray welding cladding layer. The technology is used for extending the service life of a packer of a railway large-scale tamping machine. According to the invention, a wear resistant metal cladding layer is obtained through spray welding; the wear resistant metal cladding layer is a nickel-base alloy material; the structure of the layer is mainly tungsten carbide in diffuse distribution; chemical components of the wear resistant metal cladding layer comprise 8 to 15 of Cr, 3.0 to 4.5 of B, 4.0 to 6.0 of Si, no more 5.0 of Fe, 20 to 40 of WC, no more than 6 of Mo and a trace amount of Re, with the balance being Ni. Utilization of the technology provided in the invention not only enables the service life of domestic packers to be substantially prolonged and working intensity of on-site staff to be alleviated, but also allows line working performance to be enhanced and cost to be reduced.
Description
Affiliated technical field
The invention belongs to the automobile-used tamping pickaxe specific equipment of railway large-scale line tamping and make the field.
Background technology
Tamping pickaxe is one of part of big consumption on the tamping car, can carry out smooth-going degree to rail track, and the upkeep operation of degree of compactness guarantees safe train operation.By the end of the year 2009, the China railways revenue kilometres reach 8.6 ten thousand kilometers, and present homemade tamping pickaxe is made firm by ramming apart from being about 20 kilometers, cause annual national line to safeguard that required tamping pickaxe quantity increases severely.
At present, homemade tamping pickaxe type and external tamping pickaxe basically identical are mainly built-up welding tamping pickaxe and wimet tamping pickaxe; But on life-span and use properties; External and homemade tamping pickaxe differs greatly, and the difference of performance directly causes increasing substantially of import tamping pickaxe price, and delivery cycle is long.If direct dependence on import tamping pickaxe, then the China railways operation cost will significantly improve, and this is unfavorable for the extensive maintenance of way of China railways.Therefore develop a kind of novel tamping pickaxe, promote and make distance firm by ramming the work-ing life of improving tamping pickaxe,, break foreign technology monopolization and be necessary for reducing maintenance of way cost.
The built-up welding of the most employing in present domestic tamping pickaxe pick metacarpus position CrMoWV welding rod, surfacing hardness is about HRC55～60; The parted type tamping pick pick boots of Kunming University of Science and Technology adopt mould steel, can reach HRC 52～60 through certain back hardness of handling.Although domestic tamping pickaxe has higher hardness, hardness is not remarkable to the influence of wear resisting property.
Summary of the invention
Above shortcoming in view of prior art the objective of the invention is to make the better tamping pickaxe of a kind of wear resisting property, the objective of the invention is to realize through following means.
The objective of the invention is to realize through following means.
A kind of tamping pickaxe antifriction metal (AFM) surfacing overlay life-prolonging technique is slapped position easy to wear pick and is adopted surfacing to obtain the antifriction metal (AFM) overlay work-ing life that is used to improve railway large-scale tamping car tamping pickaxe, and said antifriction metal (AFM) overlay is a nickel-bass alloy material; Tissue is main with the wolfram varbide that disperse distributes, the chemical ingredients of wearing layer deposited metal: Cr:8～15, B:3.0～4.5; Si:4.0～6.0, Fe :≤5.0, WC:20～40; Mo :≤6, Re: trace, Ni: surplus.
Adopt means of the present invention, utilize spray welding technology, guarantee that deposited metal organizes the highly malleablized optimum matching, hardness reaches HRC65～70.
Embodiment
Embodiment 1:
1. adopt the die forging mode to prepare tamping pickaxe;
2. before the surfacing with powdered alloy 150 ℃ of oven dry, substrate surface purifies, dries processing;
3. adopt plasma spraying welding equipment to carry out surfacing. concrete processing parameter is: sample is preheated to 300 ℃, gas flow of ions amount 450L/h, powder feeding gas flow 300L/h; Protection airshed 500L/h, transferred arc electric current 90A, transferred arc voltage 30V; Surfacing speed 6cm/min, welding gun amplitude of oscillation 30mm, spray is apart from 10mm.
4. in the surfacing process, adopt the laser remolten technology, further guarantee the bonding properties of spray-welding coating and matrix, guarantee the spray-welding coating quality.Laser cladding equipment adopts CO
2Laser apparatus is used the circular light spot single-channel scanning, nitrogen blowing protection molten bath, spot diameter 6～7mm, laser power 2～2.2kW, sweep velocity 4.5～6.5mm/s.
Typical case's cladding metallochemistry composition: Cr:13, B:3.5, Si:4.5, Fe:3.6, WC:30, Mo:4.5, Re:0.08, Ni: surplus.
Embodiment 2:
4. adopt the die forging mode to prepare tamping pickaxe;
5. before the surfacing with powdered alloy 150 ℃ of oven dry, substrate surface purifies, dries processing;
6. adopt the oxy-acetylene flame spray welding technology to carry out surfacing. concrete processing parameter is: sample is preheated to 300 ℃, acetylene pressure 0.08MPa, oxygen pressure 0.8MPa.The surfacing process adopts two step method, welding gun amplitude of oscillation 30mm, and spray is apart from 20mm, and remelting is apart from 10mm.
Typical case's wearing layer alloying constituent: Cr:9.7, B:3.8, Si:4.3, Fe:4.3, WC:31, Mo:3.0, Re:0.12, Ni: surplus.
Adopting the tamping pickaxe of the comprehensive life-prolonging technique development of this novel tamping pickaxe is the monopolization of breaking external high-performance tamping pickaxe, and the production domesticization that improves the crucial wear part of Chinese large-scale maintenance machinery provides foundation, has great economic worth and far-reaching social effect.Technique for overlaying and high-abrasive material not only can be used for large-scale tamping car and use tamping pickaxe in this technology, can also be applicable to a series of consumable products easy to wear such as pulling out tooth, slag stopper.
Claims (2)
1. a tamping pickaxe antifriction metal (AFM) surfacing overlay life-prolonging technique in the work-ing life that is used to improve railway large-scale tamping car tamping pickaxe, is characterized in that; Slap position easy to wear pick and adopt spray welding technology to obtain the antifriction metal (AFM) overlay, said antifriction metal (AFM) overlay is a nickel-bass alloy material, and tissue is main with the wolfram varbide that disperse distributes; The chemical ingredients of wearing layer deposited metal: Cr:8～15, B:3.0～4.5, Si:4.0～6.0; Fe :≤5.0, WC:20～40, Mo :≤6; Re: trace, Ni: surplus.
2. the tamping pickaxe antifriction metal (AFM) surfacing overlay life-prolonging technique according to claim 1 is characterized in that the chemical ingredients of said antifriction metal (AFM) overlay deposited metal: Cr:13, B:3.5; Si:4.5, Fe:3.6, WC:30; Mo:4.5, Re: trace, Ni: surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102284777A CN102337534A (en) | 2010-07-16 | 2010-07-16 | Technology of extending service life of packer with wear resistant metal spray welding cladding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102284777A CN102337534A (en) | 2010-07-16 | 2010-07-16 | Technology of extending service life of packer with wear resistant metal spray welding cladding layer |
Publications (1)
| Publication Number | Publication Date |
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| CN102337534A true CN102337534A (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102284777A Pending CN102337534A (en) | 2010-07-16 | 2010-07-16 | Technology of extending service life of packer with wear resistant metal spray welding cladding layer |
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| CN (1) | CN102337534A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935817A (en) * | 2010-08-25 | 2011-01-05 | 西南交通大学 | Life-prolonging technique for antifriction metal spray welding deposited layer of tamping pick |
| CN103276338A (en) * | 2013-06-04 | 2013-09-04 | 华芳雄 | Process for repairing and reinforcing surfaces of agricultural machinery components and parts by plasma spray welding |
| CN103866222A (en) * | 2014-03-06 | 2014-06-18 | 西安交通大学 | Coating material and cutting tooth body with coating layer of coal cutter and preparation method of coating layer |
| CN104385703A (en) * | 2014-11-20 | 2015-03-04 | 西安交通大学 | Composite gradient coating for repairing surface of vane and preparation method thereof |
| WO2016049972A1 (en) * | 2014-09-30 | 2016-04-07 | 株洲西迪硬质合金科技股份有限公司 | Wear-resistant material, wear-resistant impeller and preparation method therefor |
| CN104388926B (en) * | 2014-11-12 | 2016-11-30 | 中国矿业大学 | A kind of wear-resistant transfer roller manufacture method |
| CN107326221A (en) * | 2017-06-30 | 2017-11-07 | 西南交通大学 | Cladding layer prepared by cobalt-base alloys and its cobalt-base alloys |
| CN109680201A (en) * | 2019-02-28 | 2019-04-26 | 浙江华业塑料机械有限公司 | A kind of Ni-based spherical carbide tungsten alloy powder of machine barrel wearing layer |
| CN109825831A (en) * | 2019-02-28 | 2019-05-31 | 浙江华业塑料机械有限公司 | A kind of preparation method of machine barrel anticorrosion antiwear layer |
| CN111440979A (en) * | 2020-05-18 | 2020-07-24 | 唐山中茂科技有限公司 | High-wear-resistance cladding metal ceramic powder for surface strengthening and use method thereof |
-
2010
- 2010-07-16 CN CN2010102284777A patent/CN102337534A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935817A (en) * | 2010-08-25 | 2011-01-05 | 西南交通大学 | Life-prolonging technique for antifriction metal spray welding deposited layer of tamping pick |
| CN103276338A (en) * | 2013-06-04 | 2013-09-04 | 华芳雄 | Process for repairing and reinforcing surfaces of agricultural machinery components and parts by plasma spray welding |
| CN103276338B (en) * | 2013-06-04 | 2015-06-17 | 华芳雄 | Process for repairing and reinforcing surfaces of agricultural machinery components and parts by plasma spray welding |
| CN103866222A (en) * | 2014-03-06 | 2014-06-18 | 西安交通大学 | Coating material and cutting tooth body with coating layer of coal cutter and preparation method of coating layer |
| CN103866222B (en) * | 2014-03-06 | 2016-04-27 | 西安交通大学 | A kind of coating material, with the coal winning machine cutting bit denticle of coat and preparation method |
| WO2016049972A1 (en) * | 2014-09-30 | 2016-04-07 | 株洲西迪硬质合金科技股份有限公司 | Wear-resistant material, wear-resistant impeller and preparation method therefor |
| US10107300B2 (en) | 2014-09-30 | 2018-10-23 | Zhu Zhou Seed Cemented Carbide Technology Co., Ltd. | Wear resistant material, wear resistant impeller and preparation method of wear resistant impeller |
| CN104388926B (en) * | 2014-11-12 | 2016-11-30 | 中国矿业大学 | A kind of wear-resistant transfer roller manufacture method |
| CN104385703A (en) * | 2014-11-20 | 2015-03-04 | 西安交通大学 | Composite gradient coating for repairing surface of vane and preparation method thereof |
| CN104385703B (en) * | 2014-11-20 | 2016-06-08 | 西安交通大学 | Complex gradient coating that a kind of blade surface is repaired and preparation method thereof |
| CN107326221A (en) * | 2017-06-30 | 2017-11-07 | 西南交通大学 | Cladding layer prepared by cobalt-base alloys and its cobalt-base alloys |
| CN109680201A (en) * | 2019-02-28 | 2019-04-26 | 浙江华业塑料机械有限公司 | A kind of Ni-based spherical carbide tungsten alloy powder of machine barrel wearing layer |
| CN109825831A (en) * | 2019-02-28 | 2019-05-31 | 浙江华业塑料机械有限公司 | A kind of preparation method of machine barrel anticorrosion antiwear layer |
| CN111440979A (en) * | 2020-05-18 | 2020-07-24 | 唐山中茂科技有限公司 | High-wear-resistance cladding metal ceramic powder for surface strengthening and use method thereof |
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Application publication date: 20120201 |