CN104005020A - Manufacturing method for radial bearing of screw drill - Google Patents
Manufacturing method for radial bearing of screw drill Download PDFInfo
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- CN104005020A CN104005020A CN201410234544.4A CN201410234544A CN104005020A CN 104005020 A CN104005020 A CN 104005020A CN 201410234544 A CN201410234544 A CN 201410234544A CN 104005020 A CN104005020 A CN 104005020A
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- laser
- cladding
- melting coating
- transverse bearing
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Abstract
The invention discloses a manufacturing method for a radial bearing of a screw drill, and belongs to the technical field of laser machining. A Fe-based composite material wearing resistant layer which is 1.5mm-2.5mm thick is arranged on the outer circular surface of an inner shaft sleeve of the radial bearing by laser-cladding; an Ni-based superhard wearing resistant alloy coating which is 1.5mm-2.5mm thick is arranged on the inner hole surface of an outer shaft sleeve of the radial bearing by laser-cladding; the Ni-based alloy consists of the following chemical components: 0.8wt%-1.2wt% of C, 1.5wt%-2.5wt% of B, 5wt%-8wt% of Mn, 10wt%-15wt% of Cr, 2.0wt%-3.0wt% of Si, 1.0wt%-3.0wt% of Al, 1.0wt%-2.0wt% of Nb, 0.2wt%-0.6wt% of N and the balance of Ni. The Fe-based composite material consists of the following chemical components: 20wt%-40wt% of Cr3C2, 15wt%-30wt% of WC, 2.0wt%-5.0wt% of Mo, 3wt%-6wt% of Cr, 2.0wt%-3.0wt% of Ni, 0.4wt%-0.8wt% of Si, 0.3wt%-0.6wt% of Mn, 0.5wt%-1.5wt% of Ti, and the balance of Fe. The manufacturing method disclosed by the invention adopts different processes for cladding two different materials on the outer circle of the inner shaft sleeve and in the inner hole of the outer shaft sleeve, so that processes are simplified and cost is lowered.
Description
Technical field
The present invention relates to helicoid hydraulic motor transverse bearing and laser melting coating sufacing, belong to technical field of laser processing.
Background technology
Helicoid hydraulic motor is one of most widely used well dynamic instrument in petroleum drilling.Helicoid hydraulic motor transverse bearing is positioned at its driving part, is the key part that affects the helicoid hydraulic motor life-span.Helicoid hydraulic motor transverse bearing is divided into inside and outside bearing housing, and internal axle sleeve coordinates with transmission shaft and locks, and outer axle sleeve is together with the assembling of mud motor housing, and the two coordinates formation working face, and major function is that the moment of torsion of motor and rotating speed are passed to drill bit.Axial and the radial force that is subject to universal bearing and drill bit in working process, internal axle sleeve has around outer shaft eccentric movement trend.The normal failure mode of helicoid hydraulic motor transverse bearing is cylindrical layer wearing and tearing.Due to the erosion of bearing for a long time containing sand drain liquid, therefore require the wear resistance and corrosion resistance having had.The preparation method who generally adopts be at present in radially outer bearing surface tungsten carbide button piece and scolder, dose thing and form through high temperature sintering.Having subject matter is that matrix and hard block difference in hardness are large, inhomogeneous, the hard block of wearing and tearing peels off, and causes a large amount of TC bearings to scrap.
Chinese patent CN103032028A provides a kind of Ni-Mn composite soldering of high Ni content, adopts brazing mode to prepare transverse bearing wearing layer.Chinese patent CN202108868U provides in the mode of transverse bearing surface inserting rectangle YG8 hard alloy blocks and prepares wearing layer.Chinese patent CN202628826U provides by the method for dipping high temperature sintering and prepares transverse bearing wearing layer, and matrix strengthens with the Wimet microballoon of certain particle diameter, but complex process, cost is higher.
To manufacturing the subject matter of helicoid hydraulic motor transverse bearing technology of preparing existence, be that between hard alloy blocks, the solder in gap is softer above, very easily wear and tear, cause the crack at edge of hard alloy blocks, even come off.Laser melting coating is a kind of advanced person's increasing material manufacturing technology.Adopt laser melting and coating technique not only can simplify preparation technology, and obtain organize fine and closely woven, metallurgical quality good, the coating of even wearing.For the feature of exterior and interior axle sleeves friction work, adopt different process at internal axle sleeve cylindrical and two kinds of differing materials of outer shaft endoporus cladding, reach simplification technique, the effect of reducing production costs.
Summary of the invention
For solving helicoid hydraulic motor transverse bearing wearing and tearing inequality and hard block, peel off problem, improve helicoid hydraulic motor transverse bearing work-ing life and simplify technique and reduce costs, a kind of helicoid hydraulic motor transverse bearing preparation method is provided.
A kind of manufacture method of helicoid hydraulic motor transverse bearing, it is characterized in that: the Fe based composites wearing layer that is 1.5-2.5mm at the internal axle sleeve outer round surface laser melting coating thickness of transverse bearing, the Ni base superhard wear alloy coat that is 1.5-2.5mm at the outer shaft bore surface laser melting coating thickness of transverse bearing; Described Ni base alloy composition is C:0.8-1.2wt%, B:1.5-2.5wt%, Mn:5-8wt%, Cr:10-15wt%, Si:2.0-3.0wt%, Al:1.0-3.0wt%, Nb:1.0-2.0wt%, N:0.2-0.6wt%, surplus Ni;
Described Fe based composites chemical composition is Cr
3c
2: 20-40wt%, WC:15-30wt%, Mo:2.0-5.0wt%, Cr:3-6wt%, Ni:2.0-3.0wt%, Si:0.4-0.8wt%, Mn:0.3-0.6wt%, Ti:0.5-1.5wt%, surplus Fe;
(1) the internal axle sleeve cylindrical through Overheating Treatment and mechanical workout is carried out to laser cladding wear material, powdered material used is Fe base composite powder, and chemical composition as above.Laser technical parameters is: power 2.0-4.0KW, and beam flying linear velocity 200-600mm/min, spot size scope is at 3-6mm, powder sending quantity 20-40g/min, argon flow amount scope is at 10-20L/min, and overlapping rate is 30-50%, after laser melting coating finishes, carries out stress relief annealing and mechanical workout.
(2) the outer shaft endoporus through Overheating Treatment and mechanical workout is carried out to laser cladding wear material, powder used is Ni base alloy powder, and chemical composition as above.Laser technical parameters is: power 1.5-3.0KW; beam flying linear velocity 180-500mm/min; spot size is 2-4mm; powder sending quantity 20-40g/min; it is 8-15L/min argon shield that laser cladding process adopts flow; overlapping rate is 30-50%, after laser melting coating finishes, carries out stress relief annealing and ground finish.
(3) internal axle sleeve, outer shaft after precision work are assembled.
Effect of the present invention is embodied in the powder that laser melting coating material therefor is different from normal sintering Wimet, requires powder to have certain self-fluxing nature, is suitable for laser melting and coating process.By two kinds of different-alloy materials of the exterior and interior axle sleeves cladding at transverse bearing, can obtain that metallurgical junction gets togather, the uniform wearing layer of composition, realize the uniform wear of inside and outside bearing working face, the work-ing life of greatly improving transverse bearing.
Accompanying drawing explanation
Fig. 1 is the exterior and interior axle sleeves wiring layout of transverse bearing
Fig. 2 is laser melting coating internal axle sleeve cylindrical schematic diagram
Fig. 3 is laser melting coating outer shaft endoporus schematic diagram
1. housing 2. internal axle sleeve 3. outer shaft 4. transmission shaft 5.Fe based composites wearing layer 6.Ni base superhard wear alloy coat 7. laser beam 8.Fe based composites powder stream 9.Ni base superhard wear powdered alloy lines
Embodiment
Embodiment 1
(1) select the blanking of 42CrMo cylindrical steel body to be rigid body idiosome, rigid body idiosome is carried out to forge hot, complete the roughing of both ends of the surface, external diameter, internal diameter and the chamfering of rigid body blank.After processing, bearing steel body heat is processed.
(2) laser cladding equipment is Trumpf6000 watt of CO
2laser apparatus (wavelength 10.6 μ m).Internal axle sleeve cylindrical material therefor is Fe based composites, and chemical composition is Cr
3c
2: 20wt%, WC:15wt%, Mo:2.0wt%, Cr:3wt%, Ni:2.0wt%, Si:0.4wt%, Mn:0.3wt%, Ti:0.5wt%, surplus Fe.
Internal axle sleeve cylindrical laser melting coating output rating is 4.0KW, and beam flying speed is 600mm/min, and spot size scope is at 3mm, powder sending quantity 20g/min, and argon flow amount scope is at 20L/min, and overlapping rate is 50%.The thickness that obtains cladding layer is 1.5mm.
Outer shaft endoporus material therefor is Ni base ultra-hard abrasive material, and chemical composition is C:0.8wt%, B:1.5wt%, Mn:5wt%, Cr:10wt%, Si:2.0wt%, Al:1.0wt%, Nb:1.0wt%, N:0.2wt%, surplus Ni.
Outer shaft inner hole laser cladding output rating is 3.0KW, and beam flying speed is 500mm/min, and spot size is 2mm, powder sending quantity 20g/min, and it is 15L/min argon shield that laser cladding process adopts flow, overlapping rate is 50%.The thickness that obtains cladding layer is 1.5mm.
(3) part after cladding is put into process furnace, with the speed of 50 ℃/h, be heated to 600 ℃, and be incubated 4h, cool to afterwards room temperature with the furnace.
(4) precision work, carries out size control with dial gauge in the course of processing, with contourgraph and three-coordinates measuring machine, carries out the control of the geometrical and tolerangings such as circularity, linearity.Finally with cutter backhaul, complete the smoothing cutting of piece surface.
(5) grinding end face-external diameter-internal diameter is to required precision size.Finally complete exterior and interior axle sleeves assembling.
Practical effect shows, prepare helicoid hydraulic motor transverse bearing with conventional high-temperature sintering and compare, significantly improve the work-ing life of the threaded spindle of kinds of alloy drilling tool transverse bearing of laser melting coating manufacture, more than reaching 300h, exterior and interior axle sleeves even wearing, without superhard cladding layer without coming off or avalanche phenomenon.
Embodiment 2
(1) select 45 steel cylindrical steel body blankings to be rigid body idiosome, rigid body idiosome is carried out to accurate hot rolling, complete the roughing of both ends of the surface, external diameter, internal diameter and the chamfering of rigid body blank.After processing, bearing steel body heat is processed.
(2) laser cladding equipment is 3000 watts of optical fibre output semiconductor lasers (wavelength 808-975nm).Internal axle sleeve cylindrical material therefor is Fe based composites, and chemical composition is Cr
3c
2: 40wt%, WC:30wt%, Mo:5.0wt%, Cr:6wt%, Ni:3.0wt%, Si:0.8wt%, Mn:0.6wt%, Ti:1.5wt%, surplus Fe.
Internal axle sleeve cylindrical laser melting coating output rating is 2.0KW, and beam flying speed is 200mm/min, and spot size scope is at 6mm, powder sending quantity 40g/min, and argon flow amount scope is at 10L/min, and overlapping rate is 30%.The thickness that obtains cladding layer is 2.5mm.
Outer shaft endoporus material therefor is Ni base ultra-hard abrasive material, and chemical composition is C:1.2wt%, B:2.5wt%, Mn:8wt%, Cr:15wt%, Si:3.0wt%, Al:3.0wt%, Nb:2.0wt%, N:0.6wt%, surplus Ni.
Outer shaft inner hole laser cladding output rating is 1.5KW, and beam flying speed is 180mm/min, and spot size is 4mm, powder sending quantity 40g/min, and it is 8L/min argon shield that laser cladding process adopts flow, overlapping rate is 30%.The thickness that obtains cladding layer is 2.5mm.
(3) part after cladding is put into process furnace, with the speed of 70 ℃/h, be heated to 400 ℃, and be incubated 6h, cool to afterwards room temperature with the furnace.
(4) precision work, carries out size control with dial gauge in the course of processing, with contourgraph and three-coordinates measuring machine, carries out the control of the geometrical and tolerangings such as circularity, linearity.Finally with cutter backhaul, complete the smoothing cutting of piece surface.
(5) grinding end face-external diameter-internal diameter is to required precision size.Finally complete exterior and interior axle sleeves assembling.
Practical effect shows, prepare helicoid hydraulic motor transverse bearing with conventional high-temperature sintering and compare, significantly improve the work-ing life of the threaded spindle of kinds of alloy drilling tool transverse bearing of laser melting coating manufacture, more than reaching 500h, exterior and interior axle sleeves even wearing, without superhard cladding layer without coming off or avalanche phenomenon.
Embodiment 3
(1) select the blanking of 9Cr18 steel cylindrical steel body to be rigid body idiosome, rigid body idiosome is carried out to hot rolling, complete the roughing of both ends of the surface, external diameter, internal diameter and the chamfering of rigid body blank.After processing, bearing steel body heat is processed.
(2) laser cladding equipment is 4000 watts of optical fibre output semiconductor lasers (1070nm).Internal axle sleeve cylindrical material therefor is Fe based composites, and its chemical composition is Cr
3c
2: 30wt%, WC:20wt%, Mo:3.0wt%, Cr:4.0wt%, Ni:2.5wt%, Si:0.6wt%, Mn:0.5wt%, Ti:1.0wt%, surplus Fe.
Internal axle sleeve cylindrical laser melting coating output rating is 3.0KW, and beam flying speed is 400mm/min, and spot size scope is at 4mm, powder sending quantity 20g/min, and argon flow amount scope is at 15L/min, and overlapping rate is 40%.The thickness that obtains cladding layer is 2.0mm.
Outer shaft endoporus material therefor is Ni base ultra-hard abrasive material, and chemical composition is C:1.0wt%, B:2.0wt%, Mn:6.0wt%, Cr:12wt%, Si:2.5wt%, Al:2.0wt%, Nb:1.5wt%, N:0.4wt%, surplus Ni.
Outer shaft inner hole laser cladding output rating is 2.0KW, and beam flying speed is 300mm/min, and spot size is 3mm, powder sending quantity 40g/min, and it is 10L/min argon shield that laser cladding process adopts flow, overlapping rate is 40%.The thickness that obtains cladding layer is 2.0mm.
(3) part after cladding is put into process furnace, with the speed of 60 ℃/h, be heated to 500 ℃, and be incubated 5h, cool to afterwards room temperature with the furnace.
(4) precision work, carries out size control with dial gauge in the course of processing, with contourgraph and three-coordinates measuring machine, carries out the control of the geometrical and tolerangings such as circularity, linearity.Finally with cutter backhaul, complete the smoothing cutting of piece surface.
(5) grinding end face-external diameter-internal diameter is to required precision size.Finally complete exterior and interior axle sleeves assembling.
Practical effect shows, prepare helicoid hydraulic motor transverse bearing with conventional high-temperature sintering and compare, significantly improve the work-ing life of the threaded spindle of kinds of alloy drilling tool transverse bearing of laser melting coating manufacture, more than reaching 400h, exterior and interior axle sleeves even wearing, without superhard cladding layer without coming off or avalanche phenomenon.
Claims (1)
1. the manufacture method of a helicoid hydraulic motor transverse bearing, it is characterized in that: the Fe based composites wearing layer that is 1.5-2.5mm at the internal axle sleeve outer round surface laser melting coating thickness of transverse bearing, the Ni base superhard wear alloy coat that is 1.5-2.5mm at the outer shaft bore surface laser melting coating thickness of transverse bearing; Described Ni base alloy composition is C:0.8-1.2wt%, B:1.5-2.5wt%, Mn:5-8wt%, Cr:10-15wt%, Si:2.0-3.0wt%, Al:1.0-3.0wt%, Nb:1.0-2.0wt%, N:0.2-0.6wt%, surplus Ni; Described Fe based composites chemical composition is Cr
3c
2: 20-40wt%, WC:15-30wt%, Mo:2.0-5.0wt%, Cr:3-6wt%, Ni:2.0-3.0wt%, Si:0.4-0.8wt%, Mn:0.3-0.6wt%, Ti:0.5-1.5wt%, surplus Fe;
Preparation process is specific as follows:
(1) the internal axle sleeve cylindrical through Overheating Treatment and mechanical workout is carried out to laser cladding wear material, powdered material used is Fe base composite powder, and chemical composition as above; Laser technical parameters is: power 2.0-4.0KW, and beam flying linear velocity 200-600mm/min, spot size scope is at 3-6mm, powder sending quantity 20-40g/min, argon flow amount scope is at 10-20L/min, and overlapping rate is 30-50%, after laser melting coating finishes, carries out stress relief annealing and mechanical workout;
(2) the outer shaft endoporus through Overheating Treatment and mechanical workout is carried out to laser cladding wear material, powder used is Ni base alloy powder, and chemical composition as above; Laser technical parameters is: power 1.5-3.0KW; beam flying linear velocity 180-500mm/min; spot size is 2-4mm; powder sending quantity 20-40g/min; it is 8-15L/min argon shield that laser cladding process adopts flow; overlapping rate is 30-50%, after laser melting coating finishes, carries out stress relief annealing and ground finish.
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| CN201410234544.4A CN104005020B (en) | 2014-05-29 | 2014-05-29 | A kind of manufacture method of helicoid hydraulic motor transverse bearing |
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| CN104005020B CN104005020B (en) | 2016-01-06 |
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| CN107338436A (en) * | 2017-06-28 | 2017-11-10 | 河海大学 | A kind of iron-based composite coating and its preparation method and application |
| CN109825830A (en) * | 2019-02-25 | 2019-05-31 | 盐城工业职业技术学院 | A kind of self-lubricating bearing and preparation method thereof |
| CN111321356A (en) * | 2020-04-09 | 2020-06-23 | 莆田学院 | Laser additive manufacturing sink roller composite shaft sleeve and preparation method thereof |
| CN111485137A (en) * | 2020-05-19 | 2020-08-04 | 北京工业大学 | Preparation method of coating material for strengthening ocean lifting platform bolt oil cylinder rod |
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| CN107338436A (en) * | 2017-06-28 | 2017-11-10 | 河海大学 | A kind of iron-based composite coating and its preparation method and application |
| CN109825830A (en) * | 2019-02-25 | 2019-05-31 | 盐城工业职业技术学院 | A kind of self-lubricating bearing and preparation method thereof |
| CN111321356A (en) * | 2020-04-09 | 2020-06-23 | 莆田学院 | Laser additive manufacturing sink roller composite shaft sleeve and preparation method thereof |
| CN111485137A (en) * | 2020-05-19 | 2020-08-04 | 北京工业大学 | Preparation method of coating material for strengthening ocean lifting platform bolt oil cylinder rod |
| CN111485137B (en) * | 2020-05-19 | 2021-11-05 | 北京工业大学 | Preparation method of coating material for strengthening ocean lifting platform bolt oil cylinder rod |
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