CN107761095A - A kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure - Google Patents
A kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure Download PDFInfo
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- CN107761095A CN107761095A CN201710990760.5A CN201710990760A CN107761095A CN 107761095 A CN107761095 A CN 107761095A CN 201710990760 A CN201710990760 A CN 201710990760A CN 107761095 A CN107761095 A CN 107761095A
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- 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
- C23C24/106—Coating with metal alloys or metal elements only
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Abstract
The invention belongs to metallic element laser melting coating to repair field, more particularly to a kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure, including step：(1) dimensional measurement before repairing；(2) machining of damage location and cleaning；(3) laser melting coating reparation：Laser melting coating is Ni Cr Mo or Co Cr W alloy powder with alloy powder, and laser cladding equipment uses high-power optical fiber coupled semiconductor laser, and 40%~60% is overlapped between 1800~2500W of power, 3~5mm of spot diameter, 8~15mm/s of cladding speed, road.(4) finishing and nondestructive inspection after cladding：Cladding back part, which is processed, using lathe and grinding machine makes it meet size requirement, ensures the part flawless gas hole defect after repairing using penetrant inspection.Part distortion is small, pollution-free, cost is low and can significantly extend the service life of the base part in the automation of the achievable laser cladding process of the present invention, cladding process.
Description
Technical field
The invention belongs to metallic element laser melting coating to repair field, more particularly to a kind of band chromium coating Axle Parts coating
Wear laser melting coating restorative procedure.
Background technology
Electrodeposited chromium is to improve wear-resisting, the anti-corrosion effective means of metal parts, is especially applied in all kinds of hydraulic bracket systems
Extensively.Live post and piston rod in hydraulic support are most important parts, and its surface is all by chromium plating process.Due to live post
(bar) is often stretched out outside hydraulic cylinder when working, and the dust and hard particles in direct contact environment plating exfoliation easily occur and showed
As；In addition during long-term work, live post (bar) is also worn with sealing ring, causes seal failure.
For the above-mentioned damage occurred with coating Axle Parts, if using conventional build-up welding repair method, welding deformation
Greatly, and with unmarred chromium coating binding site inevitably crack；If carried out by the way of moving back chromium and plating again
Repair, this method not only spends very big but also electroplating industry is that one kind needs great lot of water resources to consume, and environmental pollution is serious
Industry.
The content of the invention
It is an object of the invention to provide a kind of full automation, deformation is small, cladding layer capability is superior, can significantly improve
Laser melting coating restorative procedure with chromium coating shaft element wearability and service life.
Technical scheme is as follows：
A kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure, comprises the following steps：
(1) outside dimension of abrading section does not occur using micrometer caliper measurement, is provided for the machining after reparation
Related data；
(2) thickness of chromium coating is determined using layer thickness meter；
(3) chromium coating that abrading section occurs is removed completely using the method for turning, and by the diameter chi of parent metal
0.8~1.0mm is fallen in very little turning；
(4) need the position of cladding to be cleaned using cleaning agent after turning, and dried with electric-heating air blower；
(5) alloy powder used in laser melting coating is Ni-Cr-Mo or Co-Cr-W alloy powders；
(6) laser cladding equipment is high-power optical fiber coupled semiconductor laser, 1800~2500W of power, spot diameter 3
Long Axle Parts are loaded on laser melting coating special purpose machine tool in overlap joint 40%~60%, laser cladding process between~5mm, road,
Holding member linear velocity is 8~15mm/s；
(7) cladding back part is processed using lathe and grinding machine makes it meet size requirement；It is true using penetrant inspection
Part flawless gas hole defect after guarantee is multiple, is delivered for use after qualified.
Described band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure, in step (5), used in laser melting coating
Ni-Cr-Mo alloy powders nominal composition be Ni-22Cr-10Mo-5Nb-4Fe；Co-Cr-W alloy powders nominal composition is Co-
30Cr-5W-1.2C；The granularity of alloy powder is 180~325 mesh.
Described band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure, in step (6), alloy powder adds
Add mode is the airborne powder feeding of twin-tub powder feeder, using four road coaxial powder-feeding formulas, 0.8~2r/min of powder disk rotating speed, carrier gas flux 1.5
~6L/min.
The present invention design philosophy be：
Axle Parts chromium plating is to improve wear-resisting, the anti-corrosion effective means of part, is had on hydraulic stem and sealing piston bar wide
General application, but wear out failure inevitably occurs in use.It is main for the conventional reparation means of inoperative component
There are strip rechroming and a manual electric arc welding Bead weld repair again, strip plates that big for environment pollution, efficiency is low, Manual arc welding again
Connect heat input and easily trigger matrix tissue deterioration and part distortion greatly.To surrounding matrix tissue heat in laser melting coating heat input set
Damage small, and full automation in Axle Parts cladding process, parts uniformity temperature distortion are minimum.In addition, laser melting coating is adopted
Filler is metal dust, and cladding dusty material selectivity is in extensive range compared with welding wire welding rod.
The present invention has the following advantages that compared with prior art and beneficial effect：
1st, to surrounding matrix tissue in present invention process full automation, process repeatability height, laser beam heat input set
Fire damage is small, energy-conserving and environment-protective, pollution-free.
2nd, after the present invention repairs microstructure of surface cladding layer is fine and closely woven, wear and corrosion behavior is excellent, Axle Parts can be greatly prolonged
Service life, effectively reduce enterprise cost.
Embodiment
In specific implementation process, present invention band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure is as follows：
(1) dimensional measurement before repairing：The outside dimension of abrading section does not occur using micrometer caliper measurement, after reparation
Machining provide relative dimensions data；The thickness of chromium coating is determined using layer thickness meter.
(2) machining of damage location and cleaning：It is using the method for turning that the chromium coating that damage location occurs is complete
Remove and 0.8~1.0mm (diameter dimension) is fallen into parent metal turning, whether coating removes completely may be referred to layer thickness meter
The thickness of coating of determination；Cleaned with cleaning agent after turning and dried with electric-heating air blower.
(3) laser melting coating reparation：Laser melting coating is Ni-Cr-Mo or Co-Cr-W alloy powders with alloy powder, Ni-Cr-
Mo alloy powders nominal composition is Ni-22Cr-10Mo-5Nb-4Fe；Co-Cr-W alloy powders nominal composition is Co-30Cr-5W-
1.2C；The granularity of alloy powder is 180~325 mesh.Laser cladding equipment uses high-power optical fiber coupled semiconductor laser, work(
40%~60% is overlapped between 1800~2500W of rate, 3~5mm of spot diameter, 8~15mm/s of cladding speed, road, is melted by laser
A layer thickness uniform (thickness in monolayer is up to 1.5~2.0mm), tissue can be obtained carefully on the shaft element surface being repaired by covering
Close wearing layer.
(4) finishing and nondestructive inspection after cladding：Cladding back part, which is processed, using lathe and grinding machine makes its satisfaction
Size requirement；Part flawless gas hole defect after repairing is ensured using penetrant inspection, is delivered for use after qualified.
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1：
Chromium coating abrasion occurs in use for certain crane amplitude variation cylinder piston rod, influences the normal work of crane,
Therefore the method for laser melting coating is used to repair the piston rod.Do not wear and wear using outside micrometer measurement first
The outside dimension at position, it is 0.3mm to determine piston rod uneven wear amount, use layer thickness meter determine chromium coating thickness for
0.2mm；The chromium coating that damage location occurs is removed completely using the method for turning and 1.0mm is fallen into parent metal turning simultaneously
(diameter dimension)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder used in laser melting coating is Co-Cr-W
Alloy powder (its nominal composition is Co-30Cr-5W-1.2C), the mesh of powder size 100~200；Four are used in laser cladding process
Road coaxial powder-feeding mouth carries out the addition of powder, powder feeder rotary speed 2r/min, carrier gas flux 3.5L/min；Laser melting coating power
50% is overlapped between 2200W, spot diameter 4.5mm, cladding speed 12mm/s, road, it is resistance to that 1.3mm thickness can be obtained after laser melting coating
Grind anti-corrosion alloy cladding layer；Piston rod is processed using numerically controlled lathe and grinding machine after cladding, to the piston rod after reparation
Carry out size, surface roughness and penetrant inspection to examine, delivering user after qualified uses.
Embodiment 2：
Chromium coating abrasion occurs in use for certain excavator working hydraulic pressure cylinder piston rod, influences the normal work of excavator
Make, therefore use the method for laser melting coating to repair the piston rod.First using outside micrometer measurement do not occur abrasion and
The outside dimension of abrading section, it is 0.4mm to determine piston rod uneven wear amount, use layer thickness meter determine chromium coating thickness for
0.25mm；The chromium coating that damage location occurs is removed completely using the method for turning and simultaneously fallen parent metal turning
1.0mm (diameter dimension)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder is used in laser melting coating
Co-Cr-W alloy powders (its nominal composition is Co-30Cr-5W-1.2C), the mesh of powder size 100~200；Laser cladding process
The middle addition that powder is carried out using four road coaxial powder-feeding mouths, powder feeder rotary speed 2.1r/min, carrier gas flux 3.4L/min；Swash
50% is overlapped between light cladding power 2400W, spot diameter 5mm, cladding speed 12mm/s, road, can be obtained after laser melting coating
The alloy cladding layer of 1.4mm thickness wear-and corrosion-resistants；Piston rod is processed using numerically controlled lathe and grinding machine after cladding, after reparation
Piston rod carry out size, surface roughness and penetrant inspection are examined, delivering user after qualified uses.
Embodiment 3：
Chromium coating abrasion occurs in use for certain concrete mixer hydraulic cylinder piston rod, influences the normal work of pump truck
Make, therefore use the method for laser melting coating to repair the piston rod.First using outside micrometer measurement do not occur abrasion and
The outside dimension of abrading section, it is 0.15mm to determine piston rod uneven wear amount, and chromium coating thickness is determined using layer thickness meter
For 0.18mm；The chromium coating that damage location occurs is removed completely using the method for turning and simultaneously fallen parent metal turning
1.0mm (diameter dimension)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder is used in laser melting coating
Ni-Cr-Mo alloy powders (nominal composition Ni-22Cr-10Mo-5Nb-4Fe), the mesh of powder size 100~200；Laser melting coating
During the additions of powder, powder feeder rotary speed 1.8r/min, carrier gas flux 3.0L/ are carried out using four road coaxial powder-feeding mouths
min；50% is overlapped between laser melting coating power 2000W, spot diameter 4mm, cladding speed 9mm/s, road, can be with after laser melting coating
Obtain the alloy cladding layer of 1.3mm thickness wear-and corrosion-resistants；Piston rod is processed using numerically controlled lathe and grinding machine after cladding, to repairing
Piston rod after multiple carries out size, surface roughness and penetrant inspection and examined, and delivering user after qualified uses.
Embodiment 4：
Chromium coating abrasion occurs in use for certain chemical industry equipment sealing fluid depression bar, influences the sealing of equipment, therefore adopt
The piston rod is repaired with the method for laser melting coating.Abrasion and abrading section are not occurred using outside micrometer measurement first
Outside dimension, it is 0.1mm to determine piston rod uneven wear amount, uses layer thickness meter to determine chromium coating thickness for 0.2mm；Adopt
The chromium coating that damage location occurs is removed completely with the method for turning and 0.8mm (diameter chis are fallen into parent metal turning simultaneously
It is very little)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder used in laser melting coating is Ni-Cr-Mo alloyed powders
Last (nominal composition Ni-22Cr-10Mo-5Nb-4Fe), the mesh of powder size 100~200；Four tunnels are used in laser cladding process
Coaxial powder-feeding mouth carries out the addition of powder, powder feeder rotary speed 1.5r/min, carrier gas flux 2.7L/min；Laser melting coating power
50% is overlapped between 1800W, spot diameter 3.5mm, cladding speed 8mm/s, road, it is resistance to that 1.2mm thickness can be obtained after laser melting coating
Grind anti-corrosion alloy cladding layer；Hydraulic stem is processed using numerically controlled lathe and grinding machine after cladding, to the piston rod after reparation
Carry out size, surface roughness and penetrant inspection to examine, delivering user after qualified uses.
Embodiment 5：
Chromium coating abrasion occurs in use for certain 250 tons of four-column press piston rod, influences the normal work of hydraulic press,
Therefore the method for laser melting coating is used to repair the piston rod.Do not wear and wear using outside micrometer measurement first
The outside dimension at position, it is 0.3mm to determine piston rod uneven wear amount, use layer thickness meter determine chromium coating thickness for
0.3mm；The chromium coating that damage location occurs is removed completely using the method for turning and 1.0mm is fallen into parent metal turning simultaneously
(diameter dimension)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder used in laser melting coating is Co-Cr-W
Alloy powder (its nominal composition is Co-30Cr-5W-1.2C), the mesh of powder size 100~200；Four are used in laser cladding process
Road coaxial powder-feeding mouth carries out the addition of powder, powder feeder rotary speed 2r/min, carrier gas flux 3L/min；Laser melting coating power
50% is overlapped between 1800W, spot diameter 3mm, cladding speed 10mm/s, road, it is wear-resisting that 1.1mm thickness can be obtained after laser melting coating
Anti-corrosion alloy cladding layer；Piston rod is processed using numerically controlled lathe and grinding machine after cladding, the piston rod after reparation is entered
Row size, surface roughness and penetrant inspection are examined, and delivering user after qualified uses.
Embodiment 6：
Chromium coating abrasion occurs in use for certain 6000 ton of three cylinder portal shaped hydraulic press piston rod, is influenceing hydraulic press just
Often work, therefore use the method for laser melting coating to repair the piston rod.Do not ground using outside micrometer measurement first
The outside dimension of abrading section is undermined, it is 0.7mm to determine piston rod uneven wear amount, and chromium plating thickness is determined using layer thickness meter
Spend for 0.25mm；The chromium coating that damage location occurs is removed completely using the method for turning and simultaneously fallen parent metal turning
1.0mm (diameter dimension)；Cleaned with cleaning agent after turning and dried up with electric-heating air blower；Powder is used in laser melting coating
Co-Cr-W alloy powders (its nominal composition is Co-30Cr-5W-1.2C), the mesh of powder size 100~200；Laser cladding process
The middle addition that powder is carried out using four road coaxial powder-feeding mouths, powder feeder rotary speed 3r/min, carrier gas flux 4L/min；Laser melts
Cover and overlap 50% between power 2600W, spot diameter 5mm, cladding speed 14mm/s, road, 1.8mm can be obtained after laser melting coating
The alloy cladding layer of thick wear-and corrosion-resistant；Piston rod is processed using numerically controlled lathe and grinding machine after cladding, to the work after reparation
Stopper rod carries out size, surface roughness and penetrant inspection and examined, and delivering user after qualified uses.
Embodiment result shows, in the automation of the achievable laser cladding process of the present invention, cladding process part distortion it is small,
It is pollution-free, cost is low and can significantly extend the service life of the base part.
Claims (3)
1. a kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure, it is characterised in that comprise the following steps：
(1) outside dimension of abrading section does not occur using micrometer caliper measurement, correlation is provided for the machining after reparation
Data；
(2) thickness of chromium coating is determined using layer thickness meter；
(3) chromium coating that abrading section occurs is removed completely using the method for turning, and by the diameter dimension car of parent metal
Ream 0.8~1.0mm；
(4) need the position of cladding to be cleaned using cleaning agent after turning, and dried with electric-heating air blower；
(5) alloy powder used in laser melting coating is Ni-Cr-Mo or Co-Cr-W alloy powders；
(6) laser cladding equipment is high-power optical fiber coupled semiconductor laser, 1800~2500W of power, spot diameter 3~
Long Axle Parts are loaded on laser melting coating special purpose machine tool in overlap joint 40%~60%, laser cladding process between 5mm, road, protected
It is 8~15mm/s to hold part linear velocity；
(7) cladding back part is processed using lathe and grinding machine makes it meet size requirement；Ensure to repair using penetrant inspection
Part flawless gas hole defect after multiple, is delivered for use after qualified.
2. wear laser melting coating restorative procedure according to the band chromium coating Axle Parts coating described in claim 1, it is characterised in that
In step (5), the Ni-Cr-Mo alloy powders nominal composition used in laser melting coating is Ni-22Cr-10Mo-5Nb-4Fe；Co-Cr-
W alloy powder nominal composition is Co-30Cr-5W-1.2C；The granularity of alloy powder is 180~325 mesh.
3. wear laser melting coating restorative procedure according to the band chromium coating Axle Parts coating described in claim 1, it is characterised in that
In step (6), the addition manner of alloy powder is the airborne powder feeding of twin-tub powder feeder, using four road coaxial powder-feeding formulas, powder disk rotating speed
0.8~2r/min, 1.5~6L/min of carrier gas flux.
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| CN201710990760.5A CN107761095A (en) | 2017-10-23 | 2017-10-23 | A kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure |
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| CN201710990760.5A CN107761095A (en) | 2017-10-23 | 2017-10-23 | A kind of band chromium coating Axle Parts coating abrasion laser melting coating restorative procedure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581369A (en) * | 2018-03-16 | 2018-09-28 | 中国石油天然气股份有限公司 | A kind of oil-field flooding pump plunger reproducing method based on laser melting coating |
| CN109207991A (en) * | 2018-08-13 | 2019-01-15 | 浙江翰德圣智能再制造技术有限公司 | A kind of renovation technique of axle sleeve |
| CN109352261A (en) * | 2018-11-14 | 2019-02-19 | 西安必盛激光科技有限公司 | A kind of cold-welding recovery method of cladding laser surfaces hydraulic vertical prop |
| CN111593343A (en) * | 2020-06-10 | 2020-08-28 | 中国航发北京航空材料研究院 | Process method for repairing flap slide rail chromium plating surface chipping defect by laser cladding |
| CN112226756A (en) * | 2020-08-04 | 2021-01-15 | 沈阳工业大学 | Machine tool spindle remanufacturing method based on laser cladding |
| CN114481120A (en) * | 2022-01-07 | 2022-05-13 | 营口裕隆光电科技有限公司 | Method for repairing coal mine support hydraulic pushing rod by using alloy powder laser cladding |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581369A (en) * | 2018-03-16 | 2018-09-28 | 中国石油天然气股份有限公司 | A kind of oil-field flooding pump plunger reproducing method based on laser melting coating |
| CN109207991A (en) * | 2018-08-13 | 2019-01-15 | 浙江翰德圣智能再制造技术有限公司 | A kind of renovation technique of axle sleeve |
| CN109207991B (en) * | 2018-08-13 | 2020-10-02 | 浙江翰德圣智能再制造技术有限公司 | Shaft sleeve repairing process |
| CN109352261A (en) * | 2018-11-14 | 2019-02-19 | 西安必盛激光科技有限公司 | A kind of cold-welding recovery method of cladding laser surfaces hydraulic vertical prop |
| CN109352261B (en) * | 2018-11-14 | 2019-11-15 | 西安必盛激光科技有限公司 | A kind of cold-welding recovery method of cladding laser surfaces hydraulic vertical prop |
| CN111593343A (en) * | 2020-06-10 | 2020-08-28 | 中国航发北京航空材料研究院 | Process method for repairing flap slide rail chromium plating surface chipping defect by laser cladding |
| CN111593343B (en) * | 2020-06-10 | 2022-03-15 | 中国航发北京航空材料研究院 | Process method for repairing flap slide rail chromium plating surface chipping defect by laser cladding |
| CN112226756A (en) * | 2020-08-04 | 2021-01-15 | 沈阳工业大学 | Machine tool spindle remanufacturing method based on laser cladding |
| CN114481120A (en) * | 2022-01-07 | 2022-05-13 | 营口裕隆光电科技有限公司 | Method for repairing coal mine support hydraulic pushing rod by using alloy powder laser cladding |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
| CN115772668B (en) * | 2022-12-09 | 2024-05-14 | 江苏智远激光装备科技有限公司 | Laser cladding process for wind power sliding shaft |
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Application publication date: 20180306 |