CN103909378A - Optical fiber laser remanufacturing process of positive-addendum-modification large-modulus gear of ball mill - Google Patents

Optical fiber laser remanufacturing process of positive-addendum-modification large-modulus gear of ball mill Download PDF

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Publication number
CN103909378A
CN103909378A CN201410137710.9A CN201410137710A CN103909378A CN 103909378 A CN103909378 A CN 103909378A CN 201410137710 A CN201410137710 A CN 201410137710A CN 103909378 A CN103909378 A CN 103909378A
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China
Prior art keywords
gear
fiber laser
cladding layer
ball mill
optical fiber
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CN201410137710.9A
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CN103909378B (en
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金朝龙
颜瑞峰
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SUZHOU TIANHONG LASER CO Ltd
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SUZHOU TIANHONG LASER CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention discloses an optical fiber laser remanufacturing process of a positive-addendum-modification large-modulus gear of a ball mill. The optical fiber laser remanufacturing process includes adopting alloy powder to design surface layer performance, using a six-axis robot to program to generate a processing program, and adopting optical fiber laser cladding technology and large-modulus gear processing technology to repair a worn gear. By the above mode, corrosion resistance and wear resistance of the gear are improved, and service life of the gear is prolonged.

Description

A kind of ball mill normal shift large module gear optical-fiber laser manufacturing process again
Technical field
The present invention relates to gear re-manufacturing technology field, particularly relate to a kind of ball mill normal shift large module gear optical-fiber laser manufacturing process again.
Background technology
In prior art, be applied in normal shift large module gear (tooth depth 50mm, tip diameter 600mm on ball mill, the facewidth 450, modulus 22, the number of teeth 19, length 2500mm) manufacturing process be that medium carbon alloy steel 40Cr is through casting, milling, stress relief annealing, surface hardening.As ball mill drive disk assembly, in use be subject to the effects such as abrasive material, cyclic stress, corrosion, failure mode has abrasive wear, fatigue wear, excessive plastic deformation, adhesive wear and corrosive wear, the long-term phenomenons such as causing dimension overproof, wearing and tearing groove, local fracture that uses, causes gear failure.The conventional re-manufacturing technology adopting is as surface overlaying, surface ion melting and coating technique, because bond strength is low, porosity is high, organize the defects such as thick, heat affected area is large, manufacture again backgear in use peel off, wear no resistance and service life short, be difficult to meet the actual needs that use.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of ball mill normal shift large module gear optical-fiber laser manufacturing process again, has improved the corrosion-resistant and wear-resistant of gear, has extended the service life of gear.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of ball mill normal shift large module gear optical-fiber laser manufacturing process is again provided, comprises the steps:
Step 1: determine cladding layer material, design Fe-Cr series alloy powder, hardening constituent and the toughness phase of design cladding layer material, meet wear-resistant and corrosion-resistant requirement, select the alloy powder close with gear matrix material thermal coefficient of expansion, component and the mass fraction of described alloy powder are: Fe:(78%-81%); C:(0.1%-0.2%); Cr:(13%-16%); Ni:(4%-4.8%) Mo:(1.5%-2%); Described alloy powder by melting after atomization to prepare granularity be the spherical powder of 50～200 microns;
Step 2: gear surface, through oil removing-removal of impurities-rust cleaning cleaning-dye penetrant inspection-mill off damage location, obtains clean surface;
Step 3: Gear by Laser is manufactured again, the flexible laser system of processing that adopts optical fiber laser six-joint robot to form, beam mode is multimode, and power output is 2400W, and spot diameter is 10mm × 4mm, and focal length is 300mm; Powder sending quantity 15g/s, side direction powder feeding; Scanning pattern: utilize robot language programming, adopt relative instruction, limited circulation, 40% overlapping rate, sweep speed 600mm/min, generates automatic processing program; Single track cladding layer average thickness 1mm, width 4mm;
Step 4: in conjunction with Fe-Cr phasor, by metallographic microscope, SEM(SEM), frictional wear experiment, the analysis means such as microhardness testers, obtain cladding layer pattern, tribology experiments data;
Step 5: according to analysis of experimental data, the composition of optical-fiber laser cladding layer solidified structure is Fe-Cr solid solution and carbide mutually, pattern is column crystal, dendrite feature and irregular carbide, pore-free and crackle, the metallurgical binding that cladding layer and gear matrix combination interface are white band, wear extent is 1/2 of gear matrix;
Step 6: through multi-track overlapping and multilayer cladding, obtain the smooth cladding layer that thickness is about 6mm;
Step 7: tooth Profile Machining.
In a preferred embodiment of the present invention, in described step 1, alloying element Ni and Mo form solid solution, and hardening constituent is generated in-situ Cr 3c 2.
In a preferred embodiment of the present invention, described step 7 is according to reference diameter, root circle and outside circle data, in conjunction with normal shift coefficient, obtain standard tooth form data, utilize planer-type milling machine and profile of tooth data, programme by CNC, generate tooth Profile Machining program, process the annealed processing acquisition profile of tooth consistent with master gear.
The invention has the beneficial effects as follows: the laser of the present invention performance that manufactures a product again, through surface layer material and performance design, utilize laser melting and coating technique, the laser cladding layer that the thickness that to obtain with matrix combination be metallurgical binding is 6mm, size and dimension is consistent with new gear, but performance far above the laser of new gear manufacture a product again, wearability is 2 times of matrix, can reach 2 times of new gear service life.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
The embodiment of the present invention:
A kind of ball mill normal shift large module gear optical-fiber laser manufacturing process again, comprises the steps:
Step 1: determine cladding layer material, design Fe-Cr series alloy powder, hardening constituent and the toughness phase of design cladding layer material, meet wear-resistant and corrosion-resistant requirement, selects the alloy powder close with gear matrix material thermal coefficient of expansion, wherein; 40Cr matrix alloy is average coefficient of linear expansion 12.3 × 10 in 20～400 DEG C in temperature -6/ DEG C,
Component and the mass fraction of described alloy powder are: Fe:79.17% C:0.13% Cr:15% Ni:4.1% Mo:1.6%; Alloy powder is that 100～500 DEG C of average lines expand several 12.1 × 10 in temperature -6/ DEG C, approach with the hot physical property of 40Cr matrix alloy; Described alloy powder by melting after atomization to prepare granularity be the spherical powder of 50～200 microns; Wherein alloying element Ni and Mo form solid solution, and Ni puies forward heavy alloyed corrosion resistance, and Mo improves grain-boundary strength, increase toughness, and hardening constituent is generated in-situ Cr 3c 2;
Step 2: gear surface, through oil removing-removal of impurities-rust cleaning cleaning-dye penetrant inspection-mill off damage location, obtains clean surface;
Step 3: Gear by Laser is manufactured again, the flexible laser system of processing that adopts optical fiber laser six-joint robot to form, beam mode is multimode, and power output is 2400W, and spot diameter is 10mm × 4mm, and focal length is 300mm; Powder sending quantity 15g/s, side direction powder feeding; Scanning pattern: utilize robot language programming, adopt relative instruction, limited circulation, 40% overlapping rate, sweep speed 600mm/min, generates automatic processing program; Single track cladding layer average thickness 1mm, width 4mm.
Step 4: in conjunction with Fe-Cr phasor, by metallographic microscope, SEM(SEM), frictional wear experiment, the analysis means such as microhardness testers, obtain cladding layer pattern, tribology experiments data;
Step 5: according to analysis of experimental data, the composition of optical-fiber laser cladding layer solidified structure is Fe-Cr solid solution and carbide mutually, pattern is column crystal, dendrite feature and irregular carbide, pore-free and crackle, the metallurgical binding that cladding layer and gear matrix combination interface are white band, wear extent is 1/2 of gear matrix;
Step 6: through multi-track overlapping and multilayer cladding, obtain the smooth cladding layer that thickness is about 6mm;
Step 7: tooth Profile Machining, according to reference diameter, root circle and outside circle data, in conjunction with normal shift coefficient, obtain standard tooth form data, utilize planer-type milling machine and profile of tooth data, programme by CNC, generate tooth Profile Machining program, process the annealed processing acquisition profile of tooth consistent with master gear.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (3)

1. a ball mill normal shift large module gear optical-fiber laser manufacturing process again, is characterized in that, comprises the steps:
Step 1: determine cladding layer material, design Fe-Cr series alloy powder, hardening constituent and the toughness phase of design cladding layer material, meet wear-resistant and corrosion-resistant requirement, select the alloy powder close with gear matrix material thermal coefficient of expansion, component and the mass fraction of described alloy powder are: Fe:(78%-81%); C:(0.1%-0.2%); Cr:(13%-16%); Ni:(4%-4.8%) Mo:(1.5%-2%); Described alloy powder by melting after atomization to prepare granularity be the spherical powder of 50～200 microns;
Step 2: gear surface, through oil removing-removal of impurities-rust cleaning cleaning-dye penetrant inspection-mill off damage location, obtains clean surface;
Step 3: Gear by Laser is manufactured again, the flexible laser system of processing that adopts optical fiber laser six-joint robot to form, beam mode is multimode, and power output is 2400W, and spot diameter is 10mm × 4mm, and focal length is 300mm; Powder sending quantity 15g/s, side direction powder feeding; Scanning pattern: utilize robot language programming, adopt relative instruction, limited circulation, 40% overlapping rate, sweep speed 600mm/min, generates automatic processing program; Single track cladding layer average thickness 1mm, width 4mm;
Step 4: in conjunction with Fe-Cr phasor, by metallographic microscope, SEM(SEM), frictional wear experiment, the analysis means such as microhardness testers, obtain cladding layer pattern, tribology experiments data;
Step 5: according to analysis of experimental data, the composition of optical-fiber laser cladding layer solidified structure is Fe-Cr solid solution and carbide mutually, pattern is column crystal, dendrite feature and irregular carbide, pore-free and crackle, the metallurgical binding that cladding layer and matrix combination interface are white band, wear extent is matrix 1/2;
Step 6: through multi-track overlapping and multilayer cladding, obtain the smooth cladding layer that thickness is about 6mm;
Step 7: tooth Profile Machining.
2. ball mill normal shift large module gear optical-fiber laser according to claim 1 manufacturing process again, is characterized in that: in described step 1, alloying element Ni and Mo form solid solution, and hardening constituent is generated in-situ Cr 3c 2.
3. ball mill normal shift large module gear optical-fiber laser according to claim 1 manufacturing process again, it is characterized in that: described step 7 is according to reference diameter, root circle and outside circle data, in conjunction with normal shift coefficient, obtain standard tooth form data, utilize planer-type milling machine and profile of tooth data, programme by CNC, generate tooth Profile Machining program, process the annealed processing acquisition profile of tooth consistent with master gear.
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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN104141129A (en) * 2014-07-24 2014-11-12 燕山大学 Repairing method for threaded rod
CN105908181A (en) * 2015-12-01 2016-08-31 新疆汇翔激光科技有限公司 Method for repairing ethylene extrusion machine gear shaft through laser cladding
CN108367398A (en) * 2015-11-30 2018-08-03 格里森工场 The addition of gear manufactures
CN109055932A (en) * 2018-09-03 2018-12-21 湘潭大学 A kind of heavy-duty gear reparation alloy powder and its restorative procedure using waste hand alloy material
CN109371393A (en) * 2018-11-05 2019-02-22 阳泉煤业集团华越机械有限公司煤机装备研究院 A kind of laser melting coating gear reconstruction restorative procedure
CN109536955A (en) * 2019-01-23 2019-03-29 南京工业大学 Cladding mold repairing process adopting laser coaxial synchronous powder feeding method
CN110387543A (en) * 2019-09-10 2019-10-29 西安煤矿机械有限公司 A kind of method that laser melting coating repair welding answers planet carrier external splines
CN110666168A (en) * 2019-09-20 2020-01-10 航发优材(镇江)增材制造有限公司 Method for repairing turbine guider through laser material increase
CN114310206A (en) * 2021-12-09 2022-04-12 宁夏银星能源股份有限公司 Laser remanufacturing method and system for wind power gear

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141129A (en) * 2014-07-24 2014-11-12 燕山大学 Repairing method for threaded rod
CN108367398A (en) * 2015-11-30 2018-08-03 格里森工场 The addition of gear manufactures
CN105908181A (en) * 2015-12-01 2016-08-31 新疆汇翔激光科技有限公司 Method for repairing ethylene extrusion machine gear shaft through laser cladding
CN109055932A (en) * 2018-09-03 2018-12-21 湘潭大学 A kind of heavy-duty gear reparation alloy powder and its restorative procedure using waste hand alloy material
CN109371393A (en) * 2018-11-05 2019-02-22 阳泉煤业集团华越机械有限公司煤机装备研究院 A kind of laser melting coating gear reconstruction restorative procedure
CN109536955A (en) * 2019-01-23 2019-03-29 南京工业大学 Cladding mold repairing process adopting laser coaxial synchronous powder feeding method
CN109536955B (en) * 2019-01-23 2019-09-24 南京工业大学 Cladding mold repairing process adopting laser coaxial synchronous powder feeding method
CN110387543A (en) * 2019-09-10 2019-10-29 西安煤矿机械有限公司 A kind of method that laser melting coating repair welding answers planet carrier external splines
CN110387543B (en) * 2019-09-10 2021-06-29 西安煤矿机械有限公司 Method for repairing planet carrier external spline through laser cladding welding
CN110666168A (en) * 2019-09-20 2020-01-10 航发优材(镇江)增材制造有限公司 Method for repairing turbine guider through laser material increase
CN114310206A (en) * 2021-12-09 2022-04-12 宁夏银星能源股份有限公司 Laser remanufacturing method and system for wind power gear

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