CN104152837B - A kind of concrete mixer conveyance conduit and spray equipment thereof and preparation method - Google Patents
A kind of concrete mixer conveyance conduit and spray equipment thereof and preparation method Download PDFInfo
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- CN104152837B CN104152837B CN201410414374.8A CN201410414374A CN104152837B CN 104152837 B CN104152837 B CN 104152837B CN 201410414374 A CN201410414374 A CN 201410414374A CN 104152837 B CN104152837 B CN 104152837B
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Abstract
The invention discloses a kind of concrete mixer conveyance conduit, including pipeline body, pipeline body inwall is attached with the wear-proof metal ceramic coating prepared through HVAF, and the component of coating includes tungsten carbide and metal phase, and wherein metal is at least one in Ni, Co and Cr mutually.The invention also discloses the spray equipment preparing said delivery tube road for spraying, including mechanical hand, supersonic flame endoporus spray gun, rotational driving device and pipeline body, spray gun is by described manipulator clamping；The shower nozzle of spray gun facing to the inwall of pipeline body and keeps, with pipeline body, the displacement mode that can rotate against, and pipeline body passes through machine chuck or pipeline jig location and installation；During spraying, first pipeline body is carried out oil removing；Inwall sandblasting to pipeline body is roughened again；Last inner-wall spraying wear-proof metal ceramic coating under specific process conditions to pipeline body.The invention can ensure that concrete conveyance inside pipe wall has high rigidity, high-wearing feature and high corrosion-resistant.
Description
Technical field
The present invention relates to a kind of concrete conveying pipe and preparation thereof, particularly relate to a kind of concrete mixer conveyance conduit and spraying dress
Put and pipeline preparation method.
Background technology
In engineering machinery, widely used various concrete conveying pipes at work can be by the sandstone of the high rigidity in concrete
Strong friction and corrosiveness, often there is quickly abrasion and corrosion phenomenon.In order to slow down this Fast Wearing and corrosion
Effect, engineers and technicians, for the difformity of conveying pipe, are respectively adopted multiple different process for protecting surface.For pipeline,
Main employing carburizing and quenching or Hard Chromium Plating Technology.The former anti-wear performance is general, and the latter's wearability is preferable, but coating is relatively thin, and electricity
Chromium plating can produce serious industrial pollution.For the more serious bend pipe that weares and teares, in order to improve its Abrasive Resistance of Stubble-cleaning, some enterprises
Industry uses potassium steel one piece casting, and some enterprises paste potsherd inside the bend pipe of steel；Some enterprises then use high rigidity high
Wear-resisting rich chromium cast iron bend pipe is as inner tube, and outer layer uses mild steel bend pipe, the middle technique using binding agent to be filled with bonding.
Use potassium steel one piece casting, owing to conveying pipe inner concrete is little to the percussion of pipeline, it is impossible to produce and preferably process hardening,
So its abrasive wear resistance and corrosion resistance are poor, the inner liner portion of composite-curve will be through casting, heat treatment and and outer layer
Bend pipe carries out the techniques such as bonding is compound, this composite-curve also exists internal rich chromium cast iron hardness and toughness be difficult to well to mate with
And binding agent and bonding process are required the shortcomings such as high.The bend pipe of internal patch potsherd, owing to potsherd hardness is the highest, thus curved
Pipe is the most wear-resisting in the case of potsherd is adeciduate.But, this bend pipe is difficult to avoid potsherd to come off in actual use, and
And, after individual ceramic sheet comes off, locally potsherd slabbing falls off, so that bend pipe lost efficacy rapidly.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, it is provided that a kind of wear-resisting concrete conveying pipe and system
Preparation Method and the spray equipment of pipe internal coating: use special supersonic flame endoporus spray gun at concrete mixer conveying pipe
Inner-wall spraying layer of metal tungsten carbide composite ceramic coat, it is ensured that conveying inside pipe wall has the spy that high rigidity, high abrasion and height are anti-corrosion
Point.
The technical scheme that the present invention proposes be one concrete mixer conveyance conduit, including pipeline body, and described pipeline body interior
Wall is attached with the wear-proof metal ceramic coating prepared through HVAF, and described wear-proof metal ceramic coating is that tungsten carbide is multiple
Close ceramic coating；The component of described tungsten carbide composite ceramic coat includes tungsten carbide and the gold of 8～25wt% of 75～92wt%
Symbolic animal of the birth year, wherein metal is one or more in Ni, Co and Cr mutually.
As a total inventive concept, the present invention also provides for a kind of for spraying the spray preparing above-mentioned concrete mixer conveyance conduit
Coating device, including mechanical hand, supersonic flame endoporus spray gun, rotational driving device and pipeline body, in described supersonic flame
Hole spray gun is connected with fuel cylinder, powder feeder and air compressor respectively by conveying pipe；Described supersonic flame endoporus spray gun is by institute
State manipulator clamping；The shower nozzle of described supersonic flame endoporus spray gun extends in the inner chamber of pipeline body, and shower nozzle is facing to pipe
The inwall of road body also keeps, with pipeline body, the displacement mode that can rotate against, and described pipeline body is by machine chuck or pipe
Road fixture location and installation.
In above-mentioned spray equipment, one of preferred scheme is: described shower nozzle and pipeline body keep the displacement side that can rotate against
Formula refers to that shower nozzle is fixed and pipeline body is driven by described rotational driving device and rotates, and described pipeline body is fixed by machine chuck
Position is installed on described rotational driving device.Preferred: described pipeline body is a concrete conveyance straight tube；Described supersonic speed
The body axis keeping parallelism of the nozzle axis of flame endoporus spray gun and described concrete conveyance straight tube, and shower nozzle is arranged on concrete
Between inwall and the body axis of conveying straight tube radially.
In above-mentioned spray equipment, preferred another program is: described shower nozzle and pipeline body keep the displacement side that can rotate against
Formula refers to that shower nozzle rotates and pipeline body is fixed, and described pipeline body is fixed in a fixture mount by pipeline jig, described rotation
Driving equipment is an air motor, and described supersonic flame endoporus spray gun utilizes air motor to drive shower nozzle to rotate.Preferred:
Described pipeline body is a concrete conveying elbow pipe；The nozzle axis of described supersonic flame endoporus spray gun and described concrete conveyance
The body dead in line of bend pipe, and shower nozzle keep rotate while can carry out back and forth along the straight length axis of concrete conveying elbow pipe
Displacement.
As a total inventive concept, the present invention also provides for a kind of method preparing concrete mixer conveyance conduit, includes successively
Following steps:
(1) pipeline body is carried out oil removing；
(2) the inwall sandblasting to pipeline body is roughened；The general sandblasting air pressure used of sandblasting roughening is 0.25～0.6Mpa,
Sand used is preferably corundum, and granularity is 16～60 mesh；
(3) the inner-wall spraying wear-proof metal ceramic coating to pipeline body, described spraying abrasion-proof metal-cermic coating is on using
The inwall of pipeline body is sprayed by the spray equipment stated, and during spraying, fuel pressure is 50～80PSI, air pressure be 70～
95PSI, material powder powder feeding rate is 30～100g/min；The linear velocity rotated against between described shower nozzle and pipeline body is
300～1500mm/s.
In above-mentioned method, it is preferred that when the inwall of gunning concrete conveying straight tube, concrete conveyance straight tube passes through lathe card
Dish is fixed on described rotational driving device, and rotates along axis under the driving of rotational driving device, in described supersonic flame
Hole spray gun is by manipulator clamping the inner chamber that extends into pipeline body so that it is spray the concrete conveyance straight tube inwall rotated
Being coated with, concrete conveyance straight tube often rotates a circle, and supersonic flame endoporus spray gun moves the half of spray spot diameter along axis.
In above-mentioned method, it is preferred that when the inwall of gunning concrete transporting elbow, concrete conveying elbow pipe passes through piping clip
Tool is fixed in described fixture mount motionless, keeps the nozzle axis of supersonic flame endoporus spray gun and described concrete conveying elbow pipe
Body dead in line, and tangent with the axis portion of concrete conveying elbow pipe bend loss, start supersonic flame endoporus spray gun
Air motor drives shower nozzle to rotate, and shower nozzle often rotates a circle, and supersonic flame endoporus spray gun is along concrete conveying elbow pipe straight length axle
Line moves the half of spray spot diameter, after having sprayed straight length and the part bend loss of concrete conveying elbow pipe side, by concrete conveyance
Bend pipe turns around clamping, carries out straight length and the spraying of part bend loss of opposite side.
In above-mentioned method, it is preferred that described material powder includes tungsten carbide powder and the gold of 8～20wt% of 80～92wt%
Belonging to powder body, described metal-powder is Ni, Co or is Co and Cr；
When metal-powder is Ni powder, the mass fraction of tungsten carbide powder is at least up to more than 90wt%；
When metal-powder is Co powder, the mass fraction of tungsten carbide powder is at least up to more than 85wt%；
When metal-powder is Co and Cr powder, the mass fraction of tungsten carbide powder is at least up to more than 80wt%；And Co and Cr
Mass ratio >=5 of powder: 1.By the further preferred and formula of allotment material powder, so that high abrasion metal-cermic coating
There is difference to stress at aspect of performances such as wearability, corrosion resistance, durability, bond strength and hardness and highlight, and then preferably
Adapt to concrete mixer conveyance conduit working environment in different application is put into practice and requirement.
Compared with prior art, it is an advantage of the current invention that:
(1) the high abrasion metal-cermic coating that concrete mixer conveying pipeline inner wall uses, preferably metallic carbide tungsten composite coating
Hardness is the highest, wear-resisting fine with corrosion resisting property, and high with the bond strength of conveying pipe matrix；
(2) the highest due to metallic carbide tungsten composite coating hardness and the anti-wear performance of concrete mixer conveying pipeline inner wall, press
ASTM G105 weares and teares standard testing, and the abrasive wear resistance of this metallic carbide tungsten composite coating is higher more than 150 times than potassium steel,
So, the wall thickness of steel body pipe can be thinned to meet its rigidity and requirement of strength, and anti-abrasive wear is by metal-cermic coating
Undertaking, so can be substantially reduced the quality of conveying pipe, this has directly effect for improving pump truck dehvery lift；
(3) spraying after Coating Surface Roughness be about Ra3, roughness is better than routine casting sample, it is not necessary to through machining and
Heat treatment, production process is simple；
(4) use supersonic flame endoporus spray gun, can to pipeline and elbow internal wall spray metal tungsten carbide composite coating, spraying
Inner tube minimum diameter is 90mm；
(5) during spraying, conveying pipe temperature rise is little, tubular will not change, and the matrix of pipeline will not change, and conveying pipe remains to keep
The highest intensity and toughness.
Accompanying drawing explanation
Fig. 1 is the spray equipment schematic diagram of concrete mixer conveying straight pipeline inside coating in the embodiment of the present invention 1.
Fig. 2 is the spray equipment schematic diagram of concrete mixer transporting elbow road inside coating in the embodiment of the present invention 2.
Marginal data:
1, mechanical hand；2, supersonic flame endoporus spray gun；3, machine chuck；4, rotation driving platform；5, pipeline jig；
6, fixture mount；7, fuel cylinder；8, powder feeder；9, air compressor；10, concrete conveyance straight tube；11, concrete
Transporting elbow；12, air motor.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, the present invention is made more comprehensively, careful
Ground describes, but protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element is described as " be fixed on, be fixed in, be connected to or be communicated in " another yuan
Time on part, it can be directly the most fixing, affixed, connect or connect on another element, it is also possible to be by other centre connections
Part indirectly fixing, affixed, connect or connect on another element.
Embodiment 1:
The concrete mixer conveyance conduit of a kind of present invention, including pipeline body, pipeline body inwall is sprayed with wear-proof metal ceramic and is coated with
Layer, this wear-proof metal ceramic coating is tungsten carbide composite ceramic coat, and component includes the tungsten carbide of 86wt%, the Co of 10wt%
Cr with 4wt%.
As it is shown in figure 1, the spray equipment of the concrete mixer conveyance conduit of a kind of present invention, including mechanical hand 1, supersonic speed fire
Flame endoporus spray gun 2, machine chuck 3, concrete conveyance straight tube 10 and rotation driving platform 4, supersonic flame endoporus spray gun 2
It is connected with fuel cylinder 7, powder feeder 8 and air compressor 9 respectively by conveying pipe；The inwall of gunning concrete conveying straight tube 10
Time, concrete conveyance straight tube 10 is fixed on rotation driving platform 4, in the driving of rotation driving platform 4 by machine chuck 3
Lower along axis rotation, supersonic flame endoporus spray gun 2 is clamped by mechanical hand 1, and the shower nozzle of supersonic flame endoporus spray gun 2 extends
Enter in the inner chamber of concrete conveyance straight tube 10, be placed near concrete conveyance straight tube 10 inwall side, supersonic flame endoporus
The body axis keeping parallelism of the nozzle axis of spray gun 2 and concrete conveyance straight tube 10, and shower nozzle is arranged on concrete conveyance straight tube
Between inwall and the body axis of 10 radially.
The spray equipment using the present embodiment above-mentioned prepares tungsten carbide composite ceramic coat in concrete mixer conveying pipeline inner wall spraying
In method, specifically include following steps:
(1) first the inwall of concrete conveyance straight tube 10 is carried out oil removal treatment；
(2) inwall to concrete conveyance straight tube 10 carries out sandblasting roughening again, and the sand that sandblasting coarsening process uses is corundum,
Granularity is 16～60 mesh, and the air pressure of sandblasting is 0.25～0.6Mpa；
(3) use the above-mentioned spraying equipment of the present embodiment to concrete conveyance straight tube 10 inner-wall spraying tungsten carbide composite ceramic coat:
Concrete conveyance straight tube 10 first passes through machine chuck 3 be fixed on rotation driving platform 4, concrete conveyance straight tube 10 interior
Wall is 300～1500mm/s along with the linear velocity that rotation driving platform 4 carries out rotating, and mechanical hand 1 clamps supersonic flame endoporus
Inner-walls of duct is sprayed by spray gun 2, and when supersonic flame endoporus spray gun 2 sprays, the fuel propane pressure that spraying uses is 60
PSI, air pressure is 80PSI, and powder feeding rate is 50g/min, and powder body is connected with jet pipe in being placed in powder feeder 8, material powder bag
Include the tungsten carbide of 86wt%, the Cr of Co and 4wt% of 10wt%；Concrete conveyance straight tube 10 often rotates a circle, supersonic speed fire
Flame endoporus spray gun 2 moves the half of spray spot diameter along the axis of concrete conveyance straight tube 10, the moving step pitch of shower nozzle be about 2～
5mm.If concrete conveyance straight tube 10 is longer, a rear flank can be sprayed and turned around clamping again, spray opposite side.
Tungsten carbide composite ceramic coat after above-mentioned spraying is detected, the hardness of tungsten carbide composite ceramic coat after spraying >=
950HV0.3, the bond strength >=60Mpa of coating, porosity≤2%.
Embodiment 2:
The concrete mixer conveyance conduit of a kind of present invention, including pipeline body, pipeline body inwall is sprayed with wear-proof metal ceramic and is coated with
Layer, this wear-proof metal ceramic coating is tungsten carbide composite ceramic coat, and component includes the tungsten carbide of 88wt% and the Co of 12wt%.
As in figure 2 it is shown, the spray equipment of the concrete mixer conveyance conduit of a kind of present invention, including mechanical hand 1, supersonic speed fire
Flame endoporus spray gun 2, pipeline jig 5, fixture mount 6 and concrete conveying elbow pipe 11, supersonic flame endoporus spray gun 2 passes through
Conveying pipe is connected with fuel cylinder 7, powder feeder 8 and air compressor 9 respectively；During the inwall of gunning concrete transporting elbow 11,
Shower nozzle and concrete conveying elbow pipe 11 keep the displacement mode that can rotate against to refer to, and shower nozzle rotates and concrete conveying elbow pipe 11 is solid
Fixed, concrete conveying elbow pipe 11 is fixed in fixture mount 6 by pipeline jig 5, and rotational driving device is an air motor
12, supersonic flame endoporus spray gun 2 utilizes air motor 12 to drive shower nozzle to rotate.Supersonic flame endoporus spray gun 2 is by mechanical hand
1 clamping, the shower nozzle of supersonic flame endoporus spray gun 2 extends in the inner chamber of concrete conveying elbow pipe 11, supersonic flame endoporus
The nozzle axis of spray gun 2 and the body dead in line of concrete conveying elbow pipe 11, and shower nozzle can be along coagulation while keeping rotating
The straight length axis of soil transporting elbow 11 carries out shift reciprocately.
The spray equipment using the present embodiment above-mentioned prepares tungsten carbide composite ceramic coat in concrete mixer conveying pipeline inner wall spraying
In method, specifically include following steps:
(1) first the inwall of concrete conveying elbow pipe 11 is carried out oil removal treatment；
(2) inwall to concrete conveying elbow pipe 11 carries out sandblasting roughening again, and the sand that sandblasting coarsening process uses is corundum,
Granularity is 16～60 mesh, and the air pressure of sandblasting is 0.25～0.6Mpa；
(3) use the above-mentioned spraying equipment of the present embodiment to concrete conveying elbow pipe 11 inner-wall spraying tungsten carbide composite ceramic coat:
Concrete conveying elbow pipe 11 is fixed in fixture mount 6 motionless by pipeline jig 5, keeps supersonic flame endoporus spray gun 2
The body dead in line of nozzle axis and concrete conveying elbow pipe 11, and with the axis portion of concrete conveying elbow pipe 11 bend loss
Split-phase is cut, and the air motor 12 starting supersonic flame endoporus spray gun 2 drives shower nozzle to rotate, and air motor 12 drives shower nozzle to revolve
The linear velocity turned is 300～1500mm/s, and when supersonic flame endoporus spray gun 2 sprays, the fuel propane pressure that spraying uses is
70PSI, air pressure is 85PSI, and powder feeding rate is 80g/min, and powder body is connected with jet pipe in being placed in powder feeder 8, material powder
In comprise the tungsten carbide of 88wt% and the Co of 12wt%；Shower nozzle often rotates a circle, and supersonic flame endoporus spray gun 2 is defeated along concrete
Sending bend pipe 11 straight length axis to move the half of spray spot diameter, straight length and the part of having sprayed concrete conveying elbow pipe 11 side are curved
After pipeline section, turn around clamping by concrete conveying elbow pipe 11, carries out straight length and the spraying of part bend loss of opposite side.
Tungsten carbide composite ceramic coat after above-mentioned spraying is detected, the hardness of tungsten carbide composite ceramic coat after spraying >=
950HV0.3, the bond strength >=60Mpa of coating, porosity≤2%.
Embodiment 3:
The concrete mixer conveyance conduit of a kind of present invention, including pipeline body, pipeline body inwall is sprayed with wear-proof metal ceramic and is coated with
Layer, this wear-proof metal ceramic coating is tungsten carbide composite ceramic coat, and component includes the tungsten carbide of 90wt% and the Ni of 10wt%.
In addition to material powder difference, the present embodiment is used spraying equipment and spraying coating process is same as in Example 1, to spraying
After tungsten carbide composite ceramic coat detect, tungsten carbide composite ceramic coat hardness >=950HV0.3, the knot of coating after spraying
Close intensity >=60Mpa, porosity≤2%.
In the various embodiments described above, the determination of the velocity of rotation of opposite concrete conveying pipeline inner wall and supersonic flame endoporus spray gun
Along being defined below of axis translational speed:
1) determination of velocity of rotation n (unit: rev/min):
Before spraying, the internal diameter being typically based on pipeline body selects to determine velocity of rotation n of pipeline, and corresponding computing formula is:
Wherein v1For inner-walls of duct linear velocity (unit: mm/s), according to practical experience, v1It is traditionally arranged to be 300～1500mm/s,
D is inner bore of pipeline diameter (unit: mm)；From formula (1), on the premise of knowing inner bore of pipeline diameter, Ke Yiji
Calculate rotary speed n of pipeline, then corresponding rotating speed is set on rotational driving device.
2) spray gun is along axis movement speed v2The determination of (unit mm/s):
After determining pipeline rotary speed n, can be determined that supersonic flame endoporus spray gun is along axis translational speed by equation below (2)
v2:
Bring formula (1) into formula (2) can obtain:
Therefore, have only to before spraying measure internal diameter of the pipeline d, the empirical value v of linear velocity when rotating further according to inner-walls of duct1Just may be used
Linear velocity v moved along axis with the rotating speed n and supersonic flame endoporus spray gun that arrange pipeline rotation2。
Claims (3)
1. the method preparing concrete mixer conveying straight tube pipeline, comprises the following steps successively:
(1) straight tube pipeline body is carried out oil removing；
(2) the inwall sandblasting to straight tube pipeline body is roughened；
(3) the inner-wall spraying wear-proof metal ceramic coating to straight tube pipeline body, it is characterized in that: described spraying abrasion-proof metal-cermic coating is that the inwall of straight tube pipeline body is sprayed by the spray equipment using concrete mixer conveyance conduit, when the inwall of gunning concrete conveying straight tube (10), concrete conveyance straight tube (10) is fixed on rotational driving device by machine chuck (3), and rotate along axis under the driving of rotational driving device, supersonic flame endoporus spray gun (2) is clamped and extends into the inner chamber of pipeline body by mechanical hand (1), make it that concrete conveyance straight tube (10) inwall rotated to be sprayed, concrete conveyance straight tube (10) often rotates a circle, supersonic flame endoporus spray gun (2) moves the half of spray spot diameter along axis；During spraying, fuel pressure is 50～80 PSI, and air pressure is 70～95 PSI, and material powder powder feeding rate is 30～100 g/min；The linear velocity rotated against between shower nozzle and pipeline body is 300～1500 mm/s；
Described spray equipment includes mechanical hand (1), supersonic flame endoporus spray gun (2), rotational driving device and pipeline body, and described supersonic flame endoporus spray gun (2) is connected with fuel cylinder (7), powder feeder (8) and air compressor (9) respectively by conveying pipe；Described supersonic flame endoporus spray gun (2) is clamped by described mechanical hand (1)；The shower nozzle of described supersonic flame endoporus spray gun (2) extends in the inner chamber of pipeline body, and shower nozzle facing to the inwall of pipeline body and keeps, with pipeline body, the displacement mode that can rotate against, and described pipeline body is by machine chuck (3) location and installation；Described shower nozzle and pipeline body keep the displacement mode that can rotate against to refer to shower nozzle is fixed and pipeline body is driven by described rotational driving device and rotates, described pipeline body be by machine chuck (3) location and installation on described rotational driving device；The body axis keeping parallelism of the nozzle axis of described supersonic flame endoporus spray gun (2) and described concrete conveyance straight tube (10), and shower nozzle is arranged between inwall and the body axis of concrete conveyance straight tube (10) radially.
2. the method preparing concrete mixer transporting elbow pipeline, comprises the following steps successively:
(1) bend pipe pipeline body is carried out oil removing；
(2) the inwall sandblasting to bend pipe pipeline body is roughened；
null(3) the inner-wall spraying wear-proof metal ceramic coating to bend pipe pipeline body，It is characterized in that: described spraying abrasion-proof metal-cermic coating is that the inwall of bend pipe pipeline body is sprayed by the spray equipment using concrete mixer conveyance conduit，When the inwall of gunning concrete transporting elbow (11)，It is upper motionless that concrete conveying elbow pipe (11) is fixed on fixture mount (6) by pipeline jig (5)，Keep the nozzle axis of supersonic flame endoporus spray gun (2) and the body dead in line of described concrete conveying elbow pipe (11)，And it is tangent with the axis portion of concrete conveying elbow pipe (11) bend loss，The air motor (12) starting supersonic flame endoporus spray gun (2) drives shower nozzle to rotate，Shower nozzle often rotates a circle，Supersonic flame endoporus spray gun (2) moves the half of spray spot diameter along concrete conveying elbow pipe (11) straight length axis，After having sprayed straight length and the part bend loss of concrete conveying elbow pipe (11) side，Turn around clamping by concrete conveying elbow pipe (11)，Carry out straight length and the spraying of part bend loss of opposite side；During spraying, fuel pressure is 50～80 PSI, and air pressure is 70～95 PSI, and material powder powder feeding rate is 30～100 g/min；The linear velocity rotated against between described shower nozzle and pipeline body is 300～1500 mm/s；
Described spray equipment includes mechanical hand (1), supersonic flame endoporus spray gun (2), rotational driving device and pipeline body, and described supersonic flame endoporus spray gun (2) is connected with fuel cylinder (7), powder feeder (8) and air compressor (9) respectively by conveying pipe；Described supersonic flame endoporus spray gun (2) is clamped by described mechanical hand (1)；The shower nozzle of described supersonic flame endoporus spray gun (2) extends in the inner chamber of pipeline body, and shower nozzle facing to the inwall of pipeline body and keeps, with pipeline body, the displacement mode that can rotate against, and described pipeline body is by pipeline jig (5) location and installation；Described shower nozzle and pipeline body keep the displacement mode that can rotate against to refer to, and shower nozzle rotates and pipeline body is fixed, described pipeline body is fixed in a fixture mount (6) by pipeline jig (5), described rotational driving device is an air motor (12), and described supersonic flame endoporus spray gun (2) utilizes air motor (12) to drive shower nozzle to rotate；The nozzle axis of described supersonic flame endoporus spray gun (2) and the body dead in line of described concrete conveying elbow pipe (11), and shower nozzle can carry out shift reciprocately along the straight length axis of concrete conveying elbow pipe (11) while keeping rotating.
Method the most according to claim 1 and 2, it is characterised in that: described material powder includes tungsten carbide powder and the metal-powder of 8～20 wt% of 80～92 wt%, and described metal-powder is Ni, Co or is Co and Cr；
When metal-powder is Ni powder, the mass fraction of tungsten carbide powder is at least up to 90 more than wt%；
When metal-powder is Co powder, the mass fraction of tungsten carbide powder is at least up to 85 more than wt%；
When metal-powder is Co and Cr powder, the mass fraction of tungsten carbide powder is at least up to 80 more than wt%；And mass ratio >=5 of Co and Cr powder: 1.
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| CN105349933A (en) * | 2015-11-11 | 2016-02-24 | 无锡清杨机械制造有限公司 | Preparation method of metal ceramic coating |
| CN106756727A (en) * | 2016-12-02 | 2017-05-31 | 湖南省冶金材料研究院 | A kind of robot automation's spraying coating process of grinding roller wear-resistant coating |
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| CN108660457A (en) * | 2018-06-01 | 2018-10-16 | 东莞市天美新自动化设备有限公司 | Liner sprays equipment automatically |
| CN110965006A (en) * | 2019-12-30 | 2020-04-07 | 广东省新材料研究所 | Spray gun for thermally spraying inner hole, inner hole thermal spraying method and tungsten carbide coating |
| CN111471950A (en) * | 2020-03-31 | 2020-07-31 | 中煤科工集团西安研究院有限公司 | Supersonic thermal spraying manufacturing method for bimetal oil distribution sleeve |
| CN111765326B (en) * | 2020-06-23 | 2022-05-17 | 三一汽车制造有限公司 | Pipeline, preparation method of pipeline and concrete machine |
| CN112344989A (en) * | 2020-10-15 | 2021-02-09 | 济南万通铸造装备工程有限公司 | Rapid determination method for thermal insulation pipe spraying parameters |
| CN116116623B (en) * | 2023-04-13 | 2023-07-04 | 晋江市兰欣新材料科技有限公司 | Spraying equipment and spraying process for anti-corrosion paint |
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| CN2049154U (en) * | 1989-01-24 | 1989-12-13 | 谢宇金 | Plastics spraying machine with internal hole blast |
| CN103276340B (en) * | 2013-06-09 | 2015-08-19 | 天津大学 | There is the preparation method of the metal-ceramic coating of multiple dimensioned WC grain |
| CN103966595B (en) * | 2014-05-23 | 2016-03-30 | 中北大学 | The device and method of wear resistant and rustproof coating is prepared at inside pipe wall |
| CN203991000U (en) * | 2014-08-21 | 2014-12-10 | 湖南楚钢特种合金科技有限公司 | The spray equipment that can be used for interior gunning concrete carrier pipe |
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| CN104152837A (en) | 2014-11-19 |
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