CN102220580A - Special cobalt-based wear-resistant alloy powder for laser remanufacture of drilling jar - Google Patents
Special cobalt-based wear-resistant alloy powder for laser remanufacture of drilling jar Download PDFInfo
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Abstract
The invention relates to special cobalt-based wear-resistant alloy powder for laser remanufacture of a drilling jar. The powder is characterized by comprising the following components in percentage by weight: 0.6-1.0% of C, 32-36% of Cr, 7.5-9.5% of W, 3.0-3.6% of Mo, 0.8-1.2% of Ni, 0.2-0.6% of Mn, 2.0-2.4% of Si, 1.2-2.0% of Fe, 1.6-2.2% of B, 0.1-0.2% of Ce, 0.25-0.4% of Hf, 0.06-0.1% of Zr and the balance of Co. The cobalt-based wear-resistant alloy powder provided by the present invention is exclusively used in laser-cladding large-area failure working surfaces of the shaft journal of the drilling jar; and by cladding the alloy powder material, the drilling jar is restored to use, and the oxidation resistance, corrosion resistance and erosion and wear resistance are improved, thus effectively solving the difficulty in the repair of the failure shaft journal of the drilling jar.
Description
Technical field
The present invention relates to the powdered alloy that a kind of laser melting coating is used, the laser that particularly relates to higher, anti-oxidant, corrosion-resistant, the anti-erosive wear of a kind of hardness, has superior cladding performance, is fit to the cladding of drilling outfit drilling jar axle journal is made special-purpose cobalt-based wear resistant alloy powders again, belongs to the laser melting and coating technique field.
Background technology
In drilling operation, because tectonic structure complexity (as the plastic flow and the extruding on stratum in slump in, the bore hole), technical measures improper (as termination of pumping overlong time, bit balling etc.), the drilling tool bit freezing that is hampered usually takes place, and shock sub is one of effective tool of removing lock of tool drilling.
The shock sub of present domestic application, main product from producers such as Baker, Bowen, Rocan, Cougar, Guizhou Gaofeng Machinery Factory, Beijing Petroleum Machinery plant, but the import shock sub is all adopted in each oil field.The type of service of shock sub mainly contains drilling jar, fishing jar and surface bumper sub, and wherein drilling jar was both commonly used and easy to use.Drilling jar be design in drill string assembly, if creep into or the process that makes a trip in meet card, jarring releasing at any time.
Existing drilling jar all can carry out chromium plating according to the needs of operating mode to be handled at the axle journal place, but chromium coating is because lower with high base strength, and coating breaks under the interaction of corrosive medium and fatigue stress.Galvanic corrosion takes place in this chromium coating interface, place after breaking, and then causes chromium coating part or big area to be peeled off, and causes drilling jar to be scrapped.Therefore, selecting the suitable technology for preparing abrasion resistant coating at drilling jar axle journal place, make drilling jar axle journal place's abrasion resistant coating and substrate combinating strength height, wear resisting property thickness good, alloy clad even, is the current problem that needs to be resolved hurrily in affiliated field.
To various technology comparatively speaking, for the drilling jar that lost efficacy, effective, the most most economical restorative procedure is to adopt the laser melting and coating technique bonded wear-resistant to decrease the laser reproducing method of corrosion resistant powder at present.For example, the applicant's application for a patent for invention formerly " a kind of method for preparing abrasion resistant coating at drilling jar axle journal place ", it has avoided the limitation that other restorative procedure brought, deficiency and risk effectively, promoted the corrosion-proof wear performance of drilling jar axle journal working-surface effectively, cycle is short, the efficient height, improve significantly work-ing life.
Laser melting coating is an emerging high-tech processing technology, as a kind of advanced person's re-manufacturing technology, along with improving constantly of laser power and stability, has obtained rapid popularization and widespread use.Laser melting coating is to obtain and the firm metallurgical binding of matrix in the metallic surface, and the advanced re-manufacturing technology of the high-performance surface coating of defective such as pore-free, crackle, it can be with dystectic alloy material cladding at low-melting substrate surface, also can on low-cost base material, prepare high performance top coat, to replace senior in a large number, high performance integral material, save noble metal, reduce the component cost.Laser melting and coating technique has solved traditional repair method insurmountable material selection limitation such as vibration weldering, argon arc welding, spraying, coating, technological process thermal stresses, thermal distortion, material grains is thick, the body material bonding strength is difficult to guarantee contradiction.For product is made and the reparation of the component that lost efficacy provides a kind of technology uniqueness, advanced effective means again.
At present, about utilize laser melting coating or laser again manufacturing process to carry out patent and report that equipment component repairs a lot of, the wear resistant alloy powders material is quite a few, for example: publication number is " preparation method of laser fusion covered nickel base nanometer WC/Co precoated layer " that the Chinese invention patent application of CN1786272 provides, 1. this preparation method comprise the following steps: by the shellac of every grammes per square metre and the dehydrated alcohol weighing shellac and the dehydrated alcohol of 10～20 grammes per square metres, then will described shellac adds in the dehydrated alcohol to make binding agent; 2. as required in the ratio of the binding agent of every gram nickel base nanometer WC/Co powder and 0.1 milliliter～0.25 milliliter, weighing nickel base nanometer WC/Co powder and described binding agent also mix, and stir and make pre-gluing; 3. above-mentioned pre-gluing is coated in the workpiece surface for the treatment of Laser Cladding Treatment equably, makes precoated layer; 4. oven dry.Adopt homemade adhesive preparation nickel base nanometer WC/Co precoated layer, and then adopt laser melting and coating process, prepared that the surface is more smooth, finer and closely woven, basically eliminate crackle and hole and be the nickel base nanometer WC/Co compound coating of metallurgical binding with matrix.
Publication number is " laser melting and coating process of hydraulic support column cylinder, piston rod wear-resisting erosion resistance coating " that the Chinese invention patent application of CN101338427 provides, comprise following technological process: at first column cylinder, piston rod surface pre-treatment: column cylinder barrel, piston rod surface carry out oil removing, rust cleaning under the room temperature, and clean with alcohol wash; The adjusting of the selection of powdered alloy and automatic powder feeding device then: select for use have good wear-resisting erosion resistance performance and with the good iron(-)base powder of the metallurgical consistency of matrix, mainly contain Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B in the composition of iron(-)base powder; The adjusting of last automatic powder feeding device: regulate the automatic powder feeding device, the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.6-1.2mm.
Publication number is " the railroad switch sliding bed surface abrasion resistance non-corrosive alloy coating laser melting and coating process " that the Chinese invention patent application of CN101338425 provides, comprise following technological process: at first slide plate surface preparation, promptly at room temperature degreasing and rust removal is carried out on the slide plate surface, and clean with alcohol wash; Be presetting of powdered alloy then, promptly the iron-based for the treatment of cladding, Ni-based or Co-based alloy powder are preset in slide plate surface after the above-mentioned processing, and adjust prealloyed powder with the floating rule that has guide rail, make it to be evenly distributed on slide plate surface and have suitable thickness, to satisfy the requirement of coat-thickness after the cladding; Be that slide plate is strengthened in the light cladding at last, select gas CO for use
2Laser apparatus, worktable are numerically-controlled machine, carry out laser melting coating on the slide plate surface and strengthen.
Publication number is " the pick-like bit denticle head laser fusing and coating wear-resistant coating reinforcing process " that the Chinese invention patent application of CN101338428 provides, and comprises following technological process: at first be the pre-treatment of pick denticle head surface; Be the selection of powdered alloy and the adjustment of automatic powder feeding device then; Be pick head laser melting coating coated with wear-resisting alloy at last.
Though the technique scheme that prior art provides can be utilized laser melting and coating process that the equipment component parts are carried out abrasion resistant coating and handle, and obtains certain technique effect.But to other specific equipment unit, the ad hoc structure as drilling jar axle journal place for example, existing laser melting and coating process and the alloy powder material that is complementary obviously can not adapt to the development need that grows with each passing hour.
Re-manufacturing technology with this advanced person of laser melting coating, corrode wear-resistant Co-based alloy powder in conjunction with resistance to oxidation, it is to seek or provide laser melting coating needed suitable high-wear-resistant alloy powdered material that the drilling jar that lost efficacy is successfully repaired the key issue that makes its recovery and improve functions of use, this powdered material also will be fit to the cladding of axle journal large-area laser except that having property.
Retrieve verification through the applicant: domestic beyond example still, the external relevant report that is exclusively used in the cobalt-based wear resistant alloy powders material that drilling jar axle journal working-surface large-area laser makes again of yet not seeing does not also have this laser with specific properties and property to make the powdered alloy commodity of usefulness more at present on the domestic and international market.Therefore, seek out more suitable employing laser melting coating prepares abrasion resistant coating at drilling jar axle journal place special-purpose cobalt-based wear resistant alloy powders, still need the those skilled in the art further to make creationary research work.
Summary of the invention
Purpose of the present invention just provides higher, anti-oxidant, corrosion-resistant, the anti-erosive wear of a kind of hardness, has superior cladding performance, is fit to the special-purpose cobalt-based wear resistant alloy powders that this particular component journal surface large-area laser of drilling jar is made again.This special use cobalt-based wear resistant alloy powders is in conjunction with laser melting and coating technique, can be used for effectively repairing or the drilling jar of manufacturing failure again, and can guarantee defectives such as cladding layer flawless, pore, realizes that digging industry drilling rigs component repair effectively fast.
The present invention by adjusting the content of alloying element W, Mo, Ni, adds elements such as B, Si on cobalt chromium tungsten superalloy basis, form self-fluxing alloy, carries out alloy substrate and strengthens and improve the cladding performance.And on above-mentioned alloying constituent basis, add RE elements of Ce again, Zr, Hf carry out matrix grain refinement and grain-boundary strengthening, final formation is suitable for laser and makes special-purpose cobalt-based wear resistant alloy powders material again.
By interpolation alloy substrate strengthening element, grain refining grain-boundary strengthening element, and the degree of adjustment element, make alloy obtain superior over-all properties.Thereby realized that alloy when having higher hardness and intensity, has reduced alloy melting point again, increased anti-oxidant, corrosion-resistant and anti-erosive wear performance.Fundamentally solve and improved splitting resistance, formability, profile pattern, technology stability and the homogeneity of ingredients of powdered alloy in cladding layer, satisfied of the over-all properties requirement of drilling jar axle journal to high temperature resistant, corrosion-resistant, anti-erosive wear of cladding layer and higher-strength hardness etc., and laser make again back drilling jar axle journal working-surface smooth, do not need too many machine to add, only simply polish the requirement that gets final product.
The technical scheme that the present invention provides is: this drilling jar laser is made special-purpose cobalt-based wear resistant alloy powders again, is characterized in that each constituent mass percentage ratio of described special-purpose cobalt-based wear resistant alloy powders is: C:0.6～1.0%; Cr:32～36%; W:7.5～9.5%; Mo:3.0～3.6%; Ni:0.8～1.2%; Mn:0.2～0.6%; Si:2.0～2.4%; Fe:1.2～2.0%; B:1.6～2.2%; Ce:0.1～0.2%; Hf:0.25～0.4%; Zr:0.06～0.1%; Co: surplus.
Purpose to better implement the present invention, each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is: C:0.9%; Cr:33%; W:7.8%; Mo:3.2%; Ni:1.0%; Mn:0.3%; Si:2.0%; Fe:1.8%; B:1.8%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
Purpose to better implement the present invention, each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is: C:0.8%; Cr:34%; W:8.2%; Mo:3.2%; Ni:1.0%; Mn:0.3%; Si:2.0%; Fe:1.8%; B:2.0%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
Purpose to better implement the present invention, each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is: C:0.95%; Cr:35%; W:8.8%; Mo:3.2%; Ni:1.2%; Mn:0.5%; Si:2.4%; Fe:1.5%; B:2.0%; Ce:0.2%; Hf:0.35%; Zr:0.1%; Co: surplus.
The drilling jar laser that the present invention provides is made special-purpose cobalt-based wear resistant alloy powders material again, by the preparation meticulously of operations such as vacuum melting, aerosolization, screening, granularity-100+270 order.
Drilling jar laser of the present invention is made special-purpose cobalt-based wear resistant alloy powders again, can adopt 5000W CO in actual cladding operation
2Laser apparatus cooperates the three-shaft linkage processing machine that the drilling jar journal surface that lost efficacy is carried out laser and makes.On the drilling jar axle journal working-surface that lost efficacy, the laser technical parameters of cladding wear resistant alloy powders material of the present invention is: power: 4500W, focal length: 340～380mm, spot diameter: 3.5～4.5mm, sweep velocity: 360～480mm/min, put powder thickness: 0.6～1.0mm, overlapping rate: 30～40%.
Compared with prior art, the invention has the beneficial effects as follows.
1. the present invention adds alloy substrate strengthening element, grain refining and grain-boundary strengthening element on the cobalt-chromium-tungsten alloy basis, and adjusts the degree of each element, by multiple reinforcement means, the reinforced alloys matrix has improved the crystal boundary quality again, makes alloy obtain good comprehensive performances.Thereby realized that alloy is when having higher hardness and higher-strength, reduced alloy melting point again, increased anti-oxidant, corrosion-resistant, anti-erosive wear performance, fundamentally solved and improved splitting resistance, formability, technology stability and the homogeneity of ingredients of powdered alloy in laser cladding layer.
2. this powdered material is exclusively used in the laser melting coating of drilling jar axle journal (material is the 35CrMo steel) big area inefficacy working face at present, by this alloy powder material of cladding, make drilling jar not only recover use, and improved anti-oxidant, corrosion-resistant, anti-erosive wear performance.The drilling jar axle journal that efficiently solves inefficacy is repaired a difficult problem.
3. a large amount of experimental datas show, have carried out laser with cobalt-based wear resistant alloy powders of the present invention and have made, and are respond well.Through online actual survey, drilling jar working-surface wear resisting property improves 3 times, and corrosion resistance nature improves 10 times, guarantees that normal use at least one year not of drilling jar can carry out machine and add or change owing to the surface abrasion corrosion stops production.
Embodiment
Embodiment 1.
5000W CO with the cladding stable performance
2Laser apparatus, the homemade drilling jar that domestic certain company was lost efficacy carries out laser melting coating.The mass percent of the cobalt-based wear resistant alloy powders alloying element of design is: C:0.9%; Cr:33%; W:7.8%; Mo:3.2%; Ni:1.0%; Mn:0.3%; Si:2.0%; Fe:1.8%; B:1.8%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
Its melting and coating process parameter is: power: 4500W, and focal length: 340mm, spot diameter: 3.6mm, sweep velocity: 380mm/min puts powder thickness: 0.8mm, overlapping rate: 35%.
Embodiment 2.
5000W CO with the cladding stable performance
2Laser apparatus, the import drilling jar that domestic certain company was lost efficacy carries out laser melting coating.The mass percent of the cobalt-based wear resistant alloy powders alloying element of design is: C:0.8%; Cr:34%; W:8.2%; Mo:3.2%; Ni:1.0%; Mn:0.3%; Si:2.0%; Fe:1.8%; B:2.0%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
Its melting and coating process parameter is: power: 4500W, and focal length: 360mm, spot diameter: 3.6mm, sweep velocity: 400mm/min puts powder thickness: 0.8mm, overlapping rate: 35%.
Embodiment 3.
5000W CO with the cladding stable performance
2Laser apparatus, the homemade drilling jar that Guizhou company was lost efficacy carries out laser melting coating.The mass percent of the cobalt-based wear resistant alloy powders alloying element of design is: C:0.95%; Cr:35%; W:8.8%; Mo:3.2%; Ni:1.2%; Mn:0.5%; Si:2.4%; Fe:1.5%; B:2.0%; Ce:0.2%; Hf:0.35%; Zr:0.1%; Co: surplus.
Its melting and coating process parameter is: power: 4600W, and focal length: 370mm, spot diameter: 3.6mm, sweep velocity: 450mm/min puts powder thickness: 1.0mm, overlapping rate: 35%.
Claims (4)
1. a drilling jar laser is made special-purpose cobalt-based wear resistant alloy powders again, it is characterized in that each constituent mass percentage ratio of described special-purpose cobalt-based wear resistant alloy powders is:
C:?0.6～1.0%;?Cr:?32～36%；W:?7.5～9.5%；Mo:?3.0～3.6%;
Ni：0.8～1.2%；Mn：0.2～0.6%；Si：2.0～2.4%；Fe:1.2～2.0%;
B:1.6～2.2%;Ce：0.1～0.2%；Hf：0.25～0.4%；Zr：0.06～0.1%;
Co: surplus.
2. drilling jar laser according to claim 1 is made special-purpose cobalt-based wear resistant alloy powders again, it is characterized in that each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is:
C:0.9%;?Cr:33%；W:7.8%；Mo:3.2%；Ni:1.0%；?Mn：0.3%；Si：2.0%；
Fe:1.8%; B:1.8%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
3. drilling jar laser according to claim 1 is made special-purpose cobalt-based wear resistant alloy powders again, it is characterized in that each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is:
C:0.8%;?Cr:34%；W:8.2%；Mo:3.2%；Ni:1.0%；?Mn：0.3%；Si：2.0%；
Fe:1.8%; B:2.0%; Ce:0.16%; Hf:0.3%; Zr:0.08%; Co: surplus.
4. drilling jar laser according to claim 1 is made special-purpose cobalt-based wear resistant alloy powders again, it is characterized in that each constituent mass percentage ratio of special-purpose preferably cobalt-based wear resistant alloy powders is:
C:0.95%;?Cr:35%；W:8.8%；Mo:3.2%；Ni:1.2%；?Mn：0.5%；Si：2.4%；
Fe:1.5%; B:2.0%; Ce:0.2%; Hf:0.35%; Zr:0.1%; Co: surplus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110146946 CN102220580B (en) | 2011-06-02 | 2011-06-02 | Special cobalt-based wear-resistant alloy powder for laser remanufacture of drilling jar |
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| CN 201110146946 CN102220580B (en) | 2011-06-02 | 2011-06-02 | Special cobalt-based wear-resistant alloy powder for laser remanufacture of drilling jar |
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| CN102220580B CN102220580B (en) | 2012-11-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805813A (en) * | 2013-12-05 | 2014-05-21 | 鞍山煜宸科技有限公司 | Gradient alloy material and method for laser strengthening of copper plate of crystallizer of continuous casting machine |
| CN107344271A (en) * | 2017-08-19 | 2017-11-14 | 安徽鼎恒再制造产业技术研究院有限公司 | A kind of hot-die, hot extruding die built-up welding continuous casting casting rod and its welding procedure |
| CN110747465A (en) * | 2019-11-28 | 2020-02-04 | 上海大陆天瑞激光表面工程有限公司 | Laser manufacturing method of hearth roll of hot-rolling annealing furnace |
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| CN102021558A (en) * | 2009-09-09 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Alloy powder for circulating fluidized bed boiler water wall tube laser cladded coating |
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| CN101187022A (en) * | 2007-12-11 | 2008-05-28 | 沈阳大陆激光技术有限公司 | Laser cladding Co-based alloy powder for conductor roll |
| CN102021558A (en) * | 2009-09-09 | 2011-04-20 | 沈阳大陆激光技术有限公司 | Alloy powder for circulating fluidized bed boiler water wall tube laser cladded coating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103805813A (en) * | 2013-12-05 | 2014-05-21 | 鞍山煜宸科技有限公司 | Gradient alloy material and method for laser strengthening of copper plate of crystallizer of continuous casting machine |
| CN103805813B (en) * | 2013-12-05 | 2016-03-02 | 鞍山煜宸科技有限公司 | A kind of continuous caster crystallizer copperplate laser reinforcing graded alloy materials and methods |
| CN107344271A (en) * | 2017-08-19 | 2017-11-14 | 安徽鼎恒再制造产业技术研究院有限公司 | A kind of hot-die, hot extruding die built-up welding continuous casting casting rod and its welding procedure |
| CN107344271B (en) * | 2017-08-19 | 2019-12-31 | 安徽鼎恒再制造产业技术研究院有限公司 | A continuous casting rod for hot pressing die and hot extrusion die surfacing |
| CN110747465A (en) * | 2019-11-28 | 2020-02-04 | 上海大陆天瑞激光表面工程有限公司 | Laser manufacturing method of hearth roll of hot-rolling annealing furnace |
| CN110747465B (en) * | 2019-11-28 | 2021-11-16 | 上海大陆天瑞激光表面工程有限公司 | Laser manufacturing method of hearth roll of hot-rolling annealing furnace |
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| CN102220580B (en) | 2012-11-07 |
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Effective date of registration: 20160831 Address after: 200941, A-171, room 1, 1758 Hong Kong Road, Nanhui new town, Shanghai, Pudong New Area Patentee after: SHANGHAI DALU TIANRUI LASER SURFACE ENGINEERING CO.,LTD. Address before: 110136 Shenyang, Shenbei New Area Province Economic Development Zone, justice, Shen North Road, No. 29, No. Patentee before: Shenyang Dalu Laser Technology Co.,Ltd. |
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