CN103233221A - Concrete pump vehicle wear plate surface ceramic powder clad layer and laser cladding method thereof - Google Patents
Concrete pump vehicle wear plate surface ceramic powder clad layer and laser cladding method thereof Download PDFInfo
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- CN103233221A CN103233221A CN2013101335347A CN201310133534A CN103233221A CN 103233221 A CN103233221 A CN 103233221A CN 2013101335347 A CN2013101335347 A CN 2013101335347A CN 201310133534 A CN201310133534 A CN 201310133534A CN 103233221 A CN103233221 A CN 103233221A
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Abstract
The invention provides a concrete pump vehicle wear plate surface ceramic powder clad layer and a laser cladding method thereof. The ceramic alloy powder clad layer comprises a bottom layer clad on the surface of the wear plate and a working layer arranged on the bottom layer. The bottom layer is composed of nickel-based alloy powder. The working layer is a mixed alloy power of spherical WC and Ni-Cr-B-Si self-fluxing alloy. According to the invention, through a laser cladding method, the material is uniformly clad on the surface of the concrete pump vehicle wear plate, such that a uniform and compact clad layer with excellent wear resistance and corrosion resistance can be formed; housing surface wear resistance can be greatly improved; wear plate wear resistance, corrosion resistance, and service life can be substantially improved; and concrete pump vehicle efficiency and operation safety can be ensured.
Description
Technical field
The present invention relates to the laser melting and coating technique field, particularly a kind of concrete pump truck cheater plate surface ceramic powdered alloy cladding layer and laser cladding method thereof.
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Background technology
Concrete pump truck is the machinery that utilizes pressure that concrete is carried continuously along pipeline, be divided into piston-type, extruding type, hydraulic diaphragm formula by structure formation, concrete pump truck is made up of the pump housing and transfer lime usually, the pump housing is contained on the automobile chassis, and the boom that remilitarizes scalable or flexion can be formed pump truck.
Wherein, cheater plate is the vitals of concrete pump truck, also is a consumable accessory, and its life-span length directly affects service efficiency and the use cost of pump truck.Cheater plate is the part of S shape pumping distribution valve, carry cylinder to link with concrete, moving parts S pipe is under the driving of oscillating oil cylinder, with concrete from a side concrete cylinder mouth shear, torsionoscillation is to opposite side concrete cylinder mouth, cut ring is being pasted the cheater plate swing with the S pipe, has formed the switching friction pair with cheater plate.Because the quick swing of cut ring makes cheater plate produce strong wear, also will bear the surging force that produces when cutting off stone simultaneously.The concrete that working medium is made up of cement, thin coarse aggregate, water and admixture, mechanical properties such as the routed intensity of its hardness, toughness, wear resistance and resistance to compression have certain requirement, and especially hardness number is about Rockwell hardness HRC40-50.Hence one can see that, and cheater plate is mainly worked at normal temperatures, the power that withstands shocks, shearing force and bigger frictional force.The cheater plate life-span is about 30000m at present
3, far can not satisfy demand of practical production.
The main failure forms of cheater plate lost efficacy for wearing and tearing, the cracked piece that collapses, and the wearing and tearing between this cheater plate and the cut ring belong to abrasive wear.Wearing and tearing at first show as cut ring and cheater plate aperture corner angle blunt, and form less arc surface wedge shape mouth, and along with the increase of the abrasive particle particle diameter that participates in wearing and tearing, wearing clearance also increases thereupon, and the gap can influence construction because of serious spillage during greatly to certain value.And along with pumping increase highly, the impact shear of cheater plate can increase, and it is more violent to wear and tear, and the easy chipping piece that collapses.
In the prior art, improve used method of cheater plate life-span usually and comprise: the one, seek thermal fatigue resistance and the good alloy material of wear resistance, the 2nd, cheater plate is carried out surface treatment, to improve its wear resisting property.Because the working conditions of cheater plate requires matrix adopting to have the medium carbon alloy steel manufacturing (as 35CrMo, 42CrMo, 40CrNiMo etc.) that good strength cooperates with toughness, its surface requirements has high hardness and wear resistance, thereby, usually adopt intermediate frequency thermal treatment or carburizing, carbonitriding to form wearing layer, but because its wear resistance is relatively poor, the life-span only is about 30000 tons.
In addition, cheater plate is carried out surface overlaying improves its work-ing life in addition, but this method hardness still lower (HRC45-52), and has the weld cracking tendency during built-up welding high hardness material.A kind of new method is that the cheater plate life-span is brought up to more than 50000 tons at steel matrix surface tungsten carbide button piece at present, but has cracking avalanche and the too high shortcoming of cost.
Summary of the invention
The objective of the invention is to propose a kind of concrete pump truck cheater plate surface ceramic powdered alloy cladding layer and laser cladding method thereof, can improve cheater plate corrosion resisting property and work-ing life, guarantee concrete pump truck efficient and operating safety.
For achieving the above object, the present invention proposes a kind of concrete pump truck cheater plate surface ceramic powder melting layer, comprise: cladding is in the prime coat on cheater plate surface and be located at working lining on the described prime coat, described prime coat is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
Described working lining is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni.
Further, in described concrete pump truck cheater plate surface ceramic powder melting layer, each composition weight percentage of described Co-based alloy powder is preferably: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
Further, in described concrete pump truck cheater plate surface ceramic powder melting layer, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
Further, in described concrete pump truck cheater plate surface ceramic powder melting layer, the thickness of described ceramal powder melting layer is 0.8～2mm, is preferably 1.2～2mm.
In addition, the present invention also provides a kind of concrete pump truck cheater plate surface laser cladding method, may further comprise the steps:
Step S1: pre-treatment is carried out on concrete pump truck cheater plate surface;
Step S2: select the ceramal powder:
The prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
The working lining of described ceramal powder is spherical WC(wolfram varbide) and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni;
Step S3: select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3000～4000W;
The focusing rectangle spot size: length is 8～10mm, and wide is 1～1.5mm;
Described high power focused laser beam scan velocity V=300～600mm/min, overlapping rate 40～60%;
The thickness of described ceramal powder melting layer is 0.8～2mm;
Step S4: with the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Further, in described a kind of concrete pump truck cheater plate surface laser cladding method, described step S1 specifically comprises:
At room temperature oil removing, rust cleaning are carried out in the laser melting coating position for the treatment of on concrete pump truck cheater plate surface, and clean with alcohol wash;
With the penetrant inspection method tested in cheater plate surface working position, guarantee this place's flawless, pore or the defective that is mingled with.
Further, in described a kind of concrete pump truck cheater plate surface laser cladding method, each composition weight percentage of described Co-based alloy powder is preferably: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
8, a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5, it is characterized in that, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
Further, in described a kind of concrete pump truck cheater plate surface laser cladding method, also comprise among the described step S3: by the defocusing amount that the arrowband integral mirror is regulated described CO2 gas laser, make that the hot spot of this focussed laser beam is rectangle.
Further, in described a kind of concrete pump truck cheater plate surface laser cladding method, described ceramal powder melting layer is preferably 1.2～2mm.
The present invention adopts has the ceramal powder of good erosion resistance and wear resistance as the cladding alloy material, with good toughness intensity high and with the good Co-based alloy powder of the metallurgical consistency of matrix as prime coat, again with the high Ni-Cr-B-Si powdered alloy of the good intensity of wear resistance high tenacity as working lining, by laser cladding method equably cladding on concrete pump truck cheater plate surface, form evenly, fine and close, cladding layer with good wear-resisting erosion resistance performance, cladding layer and matrix form firm metallurgical binding and do not produce and peel off, greatly improved the surface of shell wear resistance, reduced crackle formation, adopt the cheater plate of the technology of the present invention manufacturing to significantly improve wear-resisting erosion resistance performance and work-ing life, guaranteed concrete pump truck efficient and operating safety.
Description of drawings
Fig. 1 is the schematic flow sheet of a kind of concrete pump truck cheater plate of the present invention surface laser cladding method one embodiment;
Fig. 2 is the structural representation of a kind of concrete pump truck cheater plate of the present invention surface ceramic powder melting layer one embodiment.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
The present invention proposes a kind of concrete pump truck cheater plate surface ceramic powder melting layer and laser cladding method thereof, it adopts the ceramal powder with good erosion resistance and wear resistance as the cladding alloy material, with good toughness intensity high and with the good Co-based alloy powder of the metallurgical consistency of matrix as prime coat, again with the high Ni-Cr-B-Si powdered alloy of the good intensity of wear resistance high tenacity as working lining, by laser cladding method equably cladding on concrete pump truck cheater plate surface, form evenly, fine and close, cladding layer with good wear-resisting erosion resistance performance, cladding layer and matrix form firm metallurgical binding and do not produce and peel off, greatly improved the surface of shell wear resistance, reduced crackle formation, adopt the cheater plate of the technology of the present invention manufacturing to significantly improve wear-resisting erosion resistance performance and work-ing life, guaranteed concrete pump truck efficient and operating safety.
See also Fig. 1, a kind of concrete pump truck cheater plate of the present invention surface laser cladding method may further comprise the steps:
Step S1: pre-treatment is carried out on concrete pump truck cheater plate surface;
Step S2: select the ceramal powder:
The prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
The working lining of described ceramal powder is spherical WC(wolfram varbide) and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni;
Step S3: select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3000～4000W;
The focusing rectangle spot size: length is 8～10mm, and wide is 1～1.5mm;
Described high power focused laser beam scan velocity V=300～600mm/min, overlapping rate 40～60%;
The thickness of described ceramal powder melting layer is 0.8～2mm;
Step S4: with the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Wherein, described step S1 specifically comprises:
At room temperature oil removing, rust cleaning are carried out in the laser melting coating position for the treatment of on concrete pump truck cheater plate surface, and clean with alcohol wash;
With the penetrant inspection method tested in cheater plate surface working position, guarantee this place's flawless, pore or the defective that is mingled with.
Each composition weight percentage of Co-based alloy powder is preferably among the described step S2: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
Each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
In the present embodiment, described CO
2Gas laser is high power CO 2 gas lasers, and its maximum power is 10000W, and 10.6 microns of wavelength can realize that the arrowband scans and the broadband rectangular scanning is carried out cladding.
Also comprise among the described step S3: by the defocusing amount that the arrowband integral mirror is regulated described CO2 gas laser, make that the hot spot of this focussed laser beam is rectangle, wherein, described arrowband integral mirror is regulated the long 10mm that is, wide is 1mm.
Among the described step S3, in high power focused laser beam irradiation cheater plate surface, adopt the automatic powder feeding device to send into the ceramal powder to laser molten pool synchronously, this ceramal powder takes place to melt fast and solidify in the molten bath, form the wear-resisting erosion resistance cladding layer of even compact, this cladding layer and matrix form firm metallurgical binding.Described ceramal powder melting layer is preferably 1.2～2mm, and its hardness, thickness evenly distribute.
See also Fig. 2, the present invention also provides a kind of concrete pump truck cheater plate surface ceramic powder melting layer, comprise cladding in the prime coat 2 on cheater plate 1 surface and be located at working lining 3 on the described prime coat 2, described prime coat 2 is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
Described working lining 3 is spherical WC(wolfram varbide) and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni.
Wherein, described WC(wolfram varbide) also being called superhard alloy, is one to have the stupalith of high rigidity, abrasion performance characteristic concurrently, generally in the powder metallurgy mode, utilize liquid-phase sintering process to come silks work, under sintering temperature, form the eutectic liquid phase in conjunction with metal and wolfram varbide, the tungsten carbide particle location is coated.
Each composition weight percentage of described Co-based alloy powder is preferably: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
Each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
The thickness of described ceramal powder melting layer is 0.8～2mm, is preferably 1.2～2mm.
This ceramic powder cladding layer is even, fine and close, has good wear-resisting erosion resistance performance, adopt spherical WC as wear-resistant phase, greatly improve the surface of shell wear resistance, adopted the high Ni-Cr-B-Si powdered alloy of good toughness intensity as bonding phase, under the situation that satisfies the working lining characteristic, working lining and cheater plate surface substrate good binding intensity have been guaranteed, and can in use suppress crackle and expand to matrix, reduce crackle formation, significantly improve wear-resisting erosion resistance performance and the work-ing life of cheater plate.
Than prior art, the present invention adopts gradient cladding layer mode to process, select for use with the good IN625 Co-based alloy powder of matrix bond as prime coat, this Co-based alloy powder toughness is strong, intensity is high, can suppress in the laser cladding process because the difference between base material and the hot rerum natura of cladding material causes the structural stress that produces.In addition, in use can suppress crackle and expand to matrix, prolong cheater plate work-ing life.
The present invention also chooses spherical WC as the wear-resistant phase of hard, adopt the high Ni-Cr-B-Si powdered alloy of good toughness intensity as bonding phase, reduced crackle formation, because the cobalt among the spherical sintered WC has good wetting ability to WC, thereby make in the cladding layer bonding mutually and hard better combination mutually, under the situation that satisfies the working lining characteristic, working lining and base material good binding intensity have been guaranteed, and can in use suppress crackle expands to matrix, and then improved wear resistance and the impelling strength of cladding layer, greatly improved the cheater plate life cycle.
To sum up, the present invention by adopt good toughness, intensity is high and with the good Co-based alloy powder of the metallurgical consistency of matrix as prime coat, appropriate design is also optimized processing parameter, carries out the quick cladding of laser, form firm metallurgical binding with base material, realize and the good toughness transition of body material; And choose and adopt spherical WC as wear-resistant phase, greatly improved the cheater plate surface abrasion resistance, adopt the high Ni-Cr-B-Si powdered alloy of good toughness intensity as bonding phase, reduced crackle formation, form the good composite cladding layer of having strong resistance to heat and hard wearing of even compact.
The power of laser beam of the present invention, position and shape etc. can accurately be controlled, easily realize constituency even microcell cladding, and the cladding layer composition dilution is low, cladding layer thickness also can accurately be controlled, belong to contactless and handle, and whole process is easy to realize automatic control; In addition, laser melting and coating process environmentally safe, radiationless, lower noise also have the productivity height, energy consumption is low, cladding layer process redundancy is little, yield rate is high and comprehensive cost is low etc., and characteristics are widely used.Therefore, the cheater plate that adopts invention to make will produce remarkable economic efficiency and social benefit.
Below in conjunction with the furthermore bright concrete pump truck cheater plate surface laser cladding method of the present invention of specific embodiment.
Embodiment 1:
Pre-treatment is carried out on concrete pump truck cheater plate surface;
Select the ceramal powder, the prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01%, Cr:30%, Fe:1.0%, Mo:10%, Si:0.1%, Nb:4.0%, surplus is Ni;
The working lining of described ceramal powder is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28%, Cr:3.5%, Fe:2.8%, Si:3.0%, and surplus is Ni;
Select the CNC laser processing machine of 5000 type CO2 laser apparatus and SIMENS for use, regulate the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
Select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3000W;
The focusing rectangle spot size: long is 8mm, and wide is 1.5mm;
Described high power focused laser beam scan velocity V=300mm/min, overlapping rate 40%;
The thickness of described ceramal powder melting layer is 0.8mm;
With the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Embodiment 2
Pre-treatment is carried out on concrete pump truck cheater plate surface;
Select the ceramal powder, the prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.05%, Cr:20%, Fe:1.8%, Mo:6%, Si:0.8%, Nb:4.5%, surplus is Ni;
The working lining of described ceramal powder is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.35%, Cr:3.5%, Fe:3.3%, Si:4.5%, and surplus is Ni;
Select the CNC laser processing machine of 5000 type CO2 laser apparatus and SIMENS for use, regulate the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
Select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3800W;
The focusing rectangle spot size: long is 10mm, and wide is 1.5mm;
Described high power focused laser beam scan velocity V=600mm/min, overlapping rate 50%;
The thickness of described ceramal powder melting layer is 2mm;
With the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Pre-treatment is carried out on concrete pump truck cheater plate surface;
Select the ceramal powder, the prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni;
The working lining of described ceramal powder is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, and surplus is Ni;
Select the CNC laser processing machine of 5000 type CO2 laser apparatus and SIMENS for use, regulate the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
Select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=4000W;
The focusing rectangle spot size: long is 9mm, and wide is 1 mm;
Described high power focused laser beam scan velocity V=400mm/min, overlapping rate 60%;
The thickness of described ceramal powder melting layer is 1.2mm;
With the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Embodiment 4
Pre-treatment is carried out on concrete pump truck cheater plate surface;
Select the ceramal powder, the prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.5%, surplus is Ni;
The working lining of described ceramal powder is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.32%, Cr:3%, Fe:2.5%, Si:3.7%, and surplus is Ni;
Select the CNC laser processing machine of 5000 type CO2 laser apparatus and SIMENS for use, regulate the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
Select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3500W;
The focusing rectangle spot size: long is 9mm, and wide is 1.2 mm;
Described high power focused laser beam scan velocity V=400mm/min, overlapping rate 50%;
The thickness of described ceramal powder melting layer is 1.5mm;
With the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (10)
1. concrete pump truck cheater plate surface ceramic powder melting layer, it is characterized in that, comprise: cladding is in the prime coat on cheater plate surface and be located at working lining on the described prime coat, and described prime coat is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
Described working lining is spherical WC and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni.
2. concrete pump truck cheater plate surface ceramic powder melting layer according to claim 1, it is characterized in that, each composition weight percentage of described Co-based alloy powder is preferably: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
3. concrete pump truck cheater plate surface ceramic powder melting layer according to claim 1, it is characterized in that, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
4. according to each described concrete pump truck cheater plate surface ceramic powder melting layer of claim 1～3, it is characterized in that the thickness of described ceramal powder melting layer is 0.8～2mm, is preferably 1.2～2mm.
5. a concrete pump truck cheater plate surface laser cladding method is characterized in that, may further comprise the steps:
Step S1: pre-treatment is carried out on concrete pump truck cheater plate surface;
Step S2: select the ceramal powder:
The prime coat of described ceramal powder is Co-based alloy powder, and each composition weight percentage of described Co-based alloy powder is:
C:0.01～0.05%, Cr:20～30%, Fe:1.0～1.8%, Mo:6～10%, Si:0.1～0.8%, Nb:3.5～4.5%, surplus are Ni;
The working lining of described ceramal powder is spherical WC(wolfram varbide) and Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder, wherein, described WC weight percentage is not less than 60%, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is: C:0.28～0.35%, Cr:3.0～3.5%, Fe:2.5～3.3%, Si:3.0～4.5%, surplus are Ni;
Step S3: select CO for use
2Gas laser and CNC laser processing machine are regulated the synchronous powder feeding system device of CNC laser processing machine, make described ceramal powder send into automatically in the laser molten pool of CNC laser processing machine;
By described CO
2Gas laser or semiconductor laser produce high-power focussed laser beam, this focussed laser beam and automatic powder feeding head carry out laser melting coating along the assigned direction feeding of concrete pump truck cheater plate surface, and described concrete pump truck cheater plate surface working forms the ceramal powder melting layer of even compact;
Laser cladding technological parameter is as follows:
Laser power P=3000～4000W;
The focusing rectangle spot size: length is 8～10mm, and wide is 1～1.5mm;
Described high power focused laser beam scan velocity V=300～600mm/min, overlapping rate 40～60%;
The thickness of described ceramal powder melting layer is 0.8～2mm;
Step S4: with the penetrant inspection method tested in the laser melting coating position on above-mentioned concrete pump truck cheater plate surface, guarantee this place's flawless, pore or the defective that is mingled with.
6. a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5 is characterized in that described step S1 specifically comprises:
At room temperature oil removing, rust cleaning are carried out in the laser melting coating position for the treatment of on concrete pump truck cheater plate surface, and clean with alcohol wash;
With the penetrant inspection method tested in cheater plate surface working position, guarantee this place's flawless, pore or the defective that is mingled with.
7. a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5, it is characterized in that, each composition weight percentage of described Co-based alloy powder is preferably: C:0.03%, Cr:21.5%, Fe:1.4%, Mo:9%, Si:0.4%, Nb:3.8%, surplus is Ni.
8. a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5, it is characterized in that, each composition weight percentage of described Ni-Cr-B-Si self-fluxing alloy hybrid alloys powder is preferably: C:0.32%, Cr:3%, Fe:3%, Si:3.7%, surplus is Ni.
9. a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5, it is characterized in that, also comprise among the described step S3: by the defocusing amount that the arrowband integral mirror is regulated described CO2 gas laser, make that the hot spot of this focussed laser beam is rectangle.
10. a kind of concrete pump truck cheater plate surface laser cladding method according to claim 5 is characterized in that described ceramal powder melting layer is preferably 1.2～2mm.
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| CN103741137A (en) * | 2013-12-31 | 2014-04-23 | 武汉团结点金激光科技有限公司 | Laser surface cladding treatment technology for tooth surface of roller bit |
| CN104249225A (en) * | 2014-06-06 | 2014-12-31 | 上海中洲特种合金材料股份有限公司 | Nickel-based high-temperature alloy welding powder and preparation method thereof as well as special equipment |
| CN104384749A (en) * | 2014-09-23 | 2015-03-04 | 上海繁威能源工程有限公司 | Corrosion-resistance nickel-based alloy powder for use in plasma spray welding |
| CN105018926A (en) * | 2015-07-09 | 2015-11-04 | 青岛前进船厂 | Damage repair method for marine steam turbine rotor |
| CN105506620A (en) * | 2015-12-31 | 2016-04-20 | 安徽昱工机电科技有限公司 | Synchronous laser cladding method of copper-base-surface composite nickel-base alloy |
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| CN103741137A (en) * | 2013-12-31 | 2014-04-23 | 武汉团结点金激光科技有限公司 | Laser surface cladding treatment technology for tooth surface of roller bit |
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| CN104249225B (en) * | 2014-06-06 | 2017-12-26 | 上海中洲特种合金材料股份有限公司 | Nickel base superalloy welding powder, its preparation method and special equipment |
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| CN105506620B (en) * | 2015-12-31 | 2018-08-21 | 安徽昱工机电科技有限公司 | A kind of synchronization laser cladding method of the compound nickel-base alloy of copper-based surfaces |
| CN109483170A (en) * | 2018-12-04 | 2019-03-19 | 王晓军 | A kind of cheater plate of concrete pump truck and the manufacturing method of cut ring |
| CN109483170B (en) * | 2018-12-04 | 2022-08-05 | 烟台盛腾泵车管件有限公司 | Manufacturing method of glasses plate and cutting ring of concrete conveying pump truck |
| 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 |
| CN113586384A (en) * | 2021-07-27 | 2021-11-02 | 中联重科股份有限公司 | Method for manufacturing glasses plate, glasses plate and manufacturing system |
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