CN103506232A - Internally and externally installed thermal spraying gun improved from internally installed thermal spraying gun and using method of internally and externally installed thermal spraying gun - Google Patents
Internally and externally installed thermal spraying gun improved from internally installed thermal spraying gun and using method of internally and externally installed thermal spraying gun Download PDFInfo
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- CN103506232A CN103506232A CN201310327928.6A CN201310327928A CN103506232A CN 103506232 A CN103506232 A CN 103506232A CN 201310327928 A CN201310327928 A CN 201310327928A CN 103506232 A CN103506232 A CN 103506232A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1693—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed with means for heating the material to be sprayed or an atomizing fluid in a supply hose or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
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- Coating By Spraying Or Casting (AREA)
Abstract
The invention provides an internally and externally installed thermal spraying gun improved from an internally installed thermal spraying gun and a using method of the internally and externally installed thermal spraying gun. The improved internally and externally installed thermal spraying gun comprises a spraying gun body (1), an inside powder feeding nozzle (2), a circumferential adjusting sleeve (6), an outside powder feeding nozzle (7) and a radial adjusting base (8). The inside powder feeding nozzle and the outside powder feeding nozzle achieve an inside and outside combined double powder-spraying system through external connection devices respectively, synchronous spraying is achieved in the mode that Al2O3 powder with a high melting point is fed as inside fed powder and TiO2 powder with a low melting point is fed as outside fed powder, and the problem that the melting point of the Al2O3 powder and the melting point of the TiO2 powder have a large difference can be effectively solved in a high-temperature area and a low-temperature area. Meanwhile, through the inside powder feeding nozzle and the outside powder feeding nozzle, the powder spraying flow and the power spraying speed of the Al2O3 powder and the powder spraying flow and the power spraying speed of the TiO2 powder can be adjusted timely, a composite plasma ceramic coating with an adjustable gradient is formed on the surface of a metallic matrix, and therefore an improvement to deposition efficiency or coating performance of the composite plasma ceramic coating is facilitated greatly.
Description
Technical field
The invention belongs to technical field of hot, especially a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof.
Background technology
The basic structure of built-in thermal spraying gun is referring to Fig. 1, built-in thermal spraying gun comprises spray gun 1, internal powder conveying mouth 2, on spray gun 1, angle mount has internal powder conveying mouth 2, the central axis of spray gun 1 is given to the vertical interval of internal powder conveying mouth 2 mouth mouths, internal powder conveying mouth 2 mouth mouths are given to the level interval of spray gun 1 port of export, during thermal spraying, built-in thermal spraying gun has adjustable voltage and current, along central axis 10 configurations of spray gun 1, carries and has H
2gas, carries and has Ar gas along 2 configurations of internal powder conveying mouth, under the protection of Ar gas, along internal powder conveying mouth 2, can spray separately A1
2o
3powder or TiO
2powder also can spray the A1 of the ratio of configuring simultaneously
2o
3powder+TiO
2powder, the external device of internal powder conveying mouth is given, internal powder conveying mouth under described external device coordinates dust flow and dusting speed adjustable respectively, H
2the flow of gas and Ar gas is also adjustable.
Built-in thermal spraying gun is mainly used in thermal spraying on metallic matrix and prepares plasma ceramic coating, this plasma ceramic coating can organically combine the obdurability of metal and the characteristics such as wear-resisting, anti-corrosion, high temperature resistant, electric insulation of pottery, for meeting the harsh requirement of a lot of special operation conditions to metal material combination property.
A1 after thermal spraying
2o
3on metallic matrix, form plasma ceramic coating, this plasma ceramic coating with its good wear-resisting, heat-resisting, anti-corrosion, electrical insulation capability is good and economy becomes output maximum, most widely used ceramic coating material, although the plurality of advantages such as hardness is high, coefficient of friction is low, chemical stability is good that this plasma ceramic coating has, but the defect that fragility is larger has greatly restricted and applied, but at Al
2o
3in powder, add appropriate TiO
2powder, can improve its toughness, reduces porosity, and the performance such as wear-resistant, shock resistance is better than pure alumina coating, has been widely used in the members such as roll, piston, valve, cylinder body, bearing shell of the industry such as machinery, naval vessel, automobile.
While using built-in thermal spraying gun, first by Al
2o
3powder and TiO
2powder or other component form and mix or composite spraying powder by design proportion formula, then pass through H
2plasma ceramic coating is prepared in the thermal spraying on metallic matrix that aids in of gas and Ar gas, and mainly there are the following problems for the built-in thermal spraying gun of single use:
First, by the plasma flame flow 9 of the synchronous spraying of above-mentioned mixing or composite spraying powder at spray gun 1 central axis in same position, because of A1
2o
3powder and TiO
2the fusing point of powder differs greatly, Al
2o
3powder and TiO
2the fusing degree of powder and state are difficult to coordinate, and the deposition efficiency of metallic matrix plasma ceramic coating and coating performance are produced to impact in various degree;
Secondly, be limited by above-mentioned mixing or the proportioning of composite spraying powder and form, such as: commercially available above-mentioned mixing or the proportioning of composite spraying powder form generally: Al
2o
3-3wt%TiO
2; Al
2o
3-13wt%TiO
2; Al
2o
3-40wt%TiO
2etc. several fixed mixing ratio, if want, obtain other proportioning, need special order, thereby bring the problems such as long in time limit, process variations, cost increase, both hindered above-mentioned mixing or the proportioning of composite spraying powder and expanded, be also unfavorable for the research and development of the special coatings such as gradient-structure.
Built-in thermal spraying gun is improved to interior external thermal spraying gun and is used for solution to the problems described above and there is not yet relevant report.
Summary of the invention
For addressing the above problem, the invention provides a kind of built-in thermal spraying gun and be improved to interior external thermal spraying gun and using method thereof, improved interior external thermal spraying gun can spray separately respectively A1
2o
3powder, TiO
2powder, sprays separately by dust flow and dusting speed of adjustment and can immediately change A1
2o
3powder and TiO
2the proportioning of powder forms, and makes the different Al of fusing point in thermal spray process
2o
3powder and TiO
2the molten state of powder is able to good coordination, thereby on metallic matrix, form easily the adjustable composite plasma ceramic coating of gradient, increase the deposition efficiency of metallic matrix composite plasma ceramic coating, improve the coating performance of metallic matrix composite plasma ceramic coating.
For achieving the above object, the present invention adopts following technical scheme:
A kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof, built-in thermal spraying gun comprises spray gun 1, internal powder conveying mouth 2, on spray gun 1, angle mount has internal powder conveying mouth 2, the central axis 10 of spray gun 1 is given to the vertical interval of internal powder conveying mouth 2 mouth mouths, internal powder conveying mouth 2 mouth mouths are given to the level interval of the spray gun port of export, during thermal spraying, built-in thermal spraying gun has adjustable voltage and current, along central axis 10 configurations of spray gun 1, carries and has H
2gas, carries and has Ar gas along 2 configurations of internal powder conveying mouth, under the protection of Ar gas, along internal powder conveying mouth 2, can spray separately A1
2o
3powder or TiO
2powder also forms plasma flame flow 9, and the external device of internal powder conveying mouth 2 is given, internal powder conveying mouth 2 under described external device coordinates dust flow and dusting speed adjustable respectively, H
2the flow of gas and Ar gas is also adjustable, Al
2o
3powder and TiO
2powder or other component form and mix or composite spraying powder by design proportion formula, and setting spray gun 1 external diameter is D; Feature of the present invention is as follows:
The structure that is improved to interior external thermal spraying gun by built-in thermal spraying gun is: first at external diameter end face car system one annular groove 3 apart from spray gun 1 port of export, the circumferential regulating sleeve 6 that internal diameter is mated with described D is fastened on spray gun 1 port of export by several screws 4, in the outside of internal powder conveying mouth 2, set markings 16, the radial end face of the circumferential regulating sleeve 6 corresponding with markings 16 sets ring-type dial 17, the internal diameter of the through hole internal diameter > spray gun 1 of circumferential regulating sleeve 6, by bolt 5, radiai adjustment seat 8 is fastened in the through hole of circumferential regulating sleeve 6, the baseplane of fastening rear radiai adjustment seat 8 is parallel to each other with the central axis of circumferential regulating sleeve 6, on the holder 12 of radiai adjustment seat 8, by the 3rd screw 13 clips, there is outer powder-feeding mouth 7, the index dial 14 of powder-feeding mouth 7 relative deflection angles outside near radiai adjustment seat 8 end faces holder 12 are provided with and show, the spout segment mark of outer powder-feeding mouth 7 is shown altitude scale line 15, the outer powder-feeding mouth 7 of installing on holder 12 is controlled at 60～120mm apart from the level interval of internal powder conveying mouth 2,
During use: due to arbitrary screw 4 and bolt 5 in the installation site of circumferential regulating sleeve 6 in same level axis, by ring-type dial 17, can demonstrate arbitrary screw 4 present position on circumferential regulating sleeve 6, with present position, be as the criterion and aim at markings 16, by the fastening of several screws 4, can guarantee that outer powder-feeding mouth 7 and internal powder conveying mouth 2 are in same level axis again, now according to the demand of thermal spraying, also first by the 3rd screw 13, adjust the deflection angle of relative spray gun 1 central axis 10 of outer powder-feeding mouth 7 mouth mouth, by the second screw 11, adjust outer powder-feeding mouth 7 mouth mouths apart from the jetting height of central axis 10 again, internal powder conveying mouth 2 and outer powder-feeding mouth 7 are connected with described external device respectively, internal powder conveying mouth 2 is by described external device spraying A1
2o
3powder, outer powder-feeding mouth 7 is by described external device spraying TiO
2powder, at H
2gas and Ar throughput are to making spray gun 1 form A1 on central axis 10 under stable condition and under described design proportion formula
2o
3powder plasma flame flow and TiO
2powder plasma flame flow, at H
2described A1 under the effect of gas
2o
3powder plasma flame flow is near internal powder conveying mouth 2 formation high-temperature regions, region and described TiO
2powder plasma flame flow is forming low-temperature space near outer powder-feeding mouth 7 regions, by the higher Al of fusing point
2o
3powder is in the interior mode and by the lower TiO of fusing point of dusting
2beyond powder, the mode of dusting efficiently solves A1
2o
3powder and TiO
2the fusing point of the powder problem that differs greatly can be adjusted Al by internal powder conveying mouth 2 and outer powder-feeding mouth 7 simultaneously immediately
2o
3powder and TiO
2dust flow and the dusting speed form the adjustable composite plasma ceramic coating of gradient at metal base surface of powder,
The technological parameter of interior external thermal spraying gun arranges as follows:
When the voltage adjustable extent of interior external thermal spraying gun during at 40～90V its preferred Control of Voltage at 60～70V;
When the electric current adjustable extent of interior external thermal spraying gun during at 400～900A its preferred Current Control at 500～600A;
When the Ar of interior external thermal spraying gun throughput adjustable extent during at 30～60L/min its preferred Ar throughput be controlled at 40～50L/min;
H when interior external thermal spraying gun
2throughput adjustable extent is its preferred H when 2～5L/min
2throughput is controlled at 3～4 L/min;
The flow-control of dusting of internal powder conveying mouth 2 is at 0～11L/min, and the dusting speed of internal powder conveying mouth 2 is controlled at 0～60g/min,
The flow-control of dusting of outer powder-feeding mouth 7 is at 0～11L/min, the dusting speed 0～60g/min of outer powder-feeding mouth 7.
Circumferentially regulating sleeve 6 can be around annular groove 3 rotating 360 degrees.
The angular range that index dial 14 shows and shows by degree is-90 °～90 °.
The outer powder-feeding mouth 7 of installing is in the vertical direction controlled at 80～100mm apart from the preferred levels spacing of internal powder conveying mouth 2.
Described deflection angle is controlled at-45 °～45 °.
Outer powder-feeding mouth 7 mouth mouths are controlled at 10～30mm apart from the jetting height of central axis 10, and preferred described jetting height is controlled at 15～25mm.
Owing to adopting technical scheme as mentioned above, the present invention produces following good effect:
1, in the improved interior external thermal spraying gun of the present invention, there is internal powder conveying mouth and outer powder-feeding mouth, internal powder conveying mouth and outer powder-feeding mouth have been realized two powder spraying systems of inside and outside combination by external device as Praxair 3710 type plasma spraying equipments, Metco 7M type plasma spraying equipment etc. respectively, by the higher Al of fusing point
2o
3powder in internal powder conveying mode by the lower TiO of fusing point
2beyond powder, automatic powder feeding system realization synchronous injection ， high-temperature region and low-temperature space can effectively solve A1
2o
3powder and TiO
2the fusing point of the powder problem that differs greatly can be adjusted Al by internal powder conveying mouth and outer powder-feeding mouth simultaneously immediately
2o
3powder and TiO
2dust flow and the dusting speed form the adjustable composite plasma ceramic coating of gradient at metal base surface of powder, this has very large facilitation to improving deposition efficiency or the coating performance of described composite plasma ceramic coating.
2, by circumferential regulating sleeve and radiai adjustment seat can realize outer powder-feeding mouth in three directions with the relative seat feature of central axis, thereby guarantee that outer powder-feeding mouth can be by TiO
2powder is ejected into the optimal site of plasma flame flow.
Accompanying drawing explanation
Fig. 1 is the basic structure simplified schematic diagram of interior external thermal spraying gun.
Fig. 2 is the local structure for amplifying simplified schematic diagram of interior external thermal spraying gun.
In above-mentioned figure: 1-spray gun; 2-internal powder conveying mouth; 3-annular groove; 4-screw; 5-bolt; The circumferential regulating sleeve of 6-; The outer powder-feeding mouth of 7-; 8-radiai adjustment seat; 9-plasma flame flow; 10-central axis; 11-the second screw; 12-holder; 13-the 3rd screw; 14-index dial; 15-altitude scale line; 16-markings; 17-ring-type dial.
The specific embodiment
The present invention is that a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof, and improved interior external thermal spraying gun can spray separately respectively A1
2o
3powder, TiO
2powder, sprays separately by dust flow and dusting speed of adjustment and can immediately change A1
2o
3powder and TiO
2the proportioning of powder forms, and makes the different Al of fusing point in thermal spray process
2o
3powder and TiO
2the molten state of powder is able to good coordination, thereby on metallic matrix, form easily the adjustable composite plasma ceramic coating of gradient, increase the deposition efficiency of metallic matrix composite plasma ceramic coating, improve the coating performance of metallic matrix composite plasma ceramic coating.
With reference to figure 1, built-in thermal spraying gun comprises spray gun 1, internal powder conveying mouth 2, on spray gun 1, angle mount has internal powder conveying mouth 2, the central axis 10 of spray gun 1 is given to the vertical interval of internal powder conveying mouth 2 mouth mouths, internal powder conveying mouth 2 mouth mouths are given to the level interval of the spray gun port of export, during thermal spraying, built-in thermal spraying gun has adjustable voltage and current, along central axis 10 configurations of spray gun 1, carries and has H
2gas, carries and has Ar gas along 2 configurations of internal powder conveying mouth, under the protection of Ar gas, along internal powder conveying mouth 2, can spray separately A1
2o
3powder or TiO
2powder also forms plasma flame flow 9, and the external device of internal powder conveying mouth 2 is given, internal powder conveying mouth 2 under described external device coordinates dust flow and dusting speed adjustable respectively, H
2the flow of gas and Ar gas is also adjustable, Al
2o
3powder and TiO
2powder or other component form and mix or composite spraying powder by design proportion formula, and described external device is as Praxair 3710 type plasma spraying equipments, Metco 7M type plasma spraying equipment etc.
The external diameter that the present invention sets spray gun 1 is D.
In conjunction with Fig. 1-2, structure and using method that built-in thermal spraying gun is improved to interior external thermal spraying gun are as follows:
First at external diameter end face car system one annular groove 3 apart from spray gun 1 port of export, the circumferential regulating sleeve 6 that internal diameter is mated with described D is fastened on spray gun 1 port of export by several screws 4, in the outside of internal powder conveying mouth 2, set markings 16, the radial end face of the circumferential regulating sleeve 6 corresponding with markings 16 sets ring-type dial 17, due to arbitrary screw 4 and bolt 5 in the installation site of circumferential regulating sleeve 6 in same level axis, by ring-type dial 17, can demonstrate arbitrary screw 4 present position on circumferential regulating sleeve 6, circumferentially regulating sleeve 6 can be as the criterion and aim at markings 16 around annular groove 3 rotating 360 degrees Bing Yi present positions, by the fastening of several screws 4, can guarantee that outer powder-feeding mouth 7 and internal powder conveying mouth 2 are in same level axis again.
The internal diameter of the through hole internal diameter > spray gun 1 of circumferential regulating sleeve 6, by bolt 5, radiai adjustment seat 8 is fastened in the through hole of circumferential regulating sleeve 6, the baseplane of fastening rear radiai adjustment seat 8 is parallel to each other with the central axis of circumferential regulating sleeve 6, on the holder 12 of radiai adjustment seat 8, by the 3rd screw 13 clips, there is outer powder-feeding mouth 7, the index dial 14 of powder-feeding mouth 7 relative deflection angles outside near radiai adjustment seat 8 end faces holder 12 are provided with and show, the angular range that index dial 14 shows and shows by degree is-90 °～90 °, but described deflection angle is controlled at-45 °～45 °, left end deflection angle is for just, right-hand member deflection angle is for negative, according to the demand of thermal spraying, by the 3rd screw 13, be the deflection angle that capable of regulating is sent relative spray gun 1 central axis 10 of powder mouth 7 mouth mouth outside, holder 12 can rotate fixing relative to radiai adjustment seat 8.
The spout segment mark of powder-feeding mouth 7 is shown altitude scale line 15 outside, outer powder-feeding mouth 7 mouth mouths are controlled at 10～30mm apart from the jetting height of central axis 10, preferred described jetting height is controlled at 15～25mm, by the second screw 11, can adjust outer powder-feeding mouth 7 mouth mouths apart from the jetting height of central axis 10.
The outer powder-feeding mouth 7 of installing on holder 12 is controlled at 60～120mm apart from the level interval of internal powder conveying mouth 2, and the outer powder-feeding mouth 7 of installing is in the vertical direction controlled at 80～100mm apart from the preferred levels spacing of internal powder conveying mouth 2.
Internal powder conveying mouth 2 and outer powder-feeding mouth 7 are connected with described external device respectively, and internal powder conveying mouth 2 is by described external device spraying A1
2o
3powder, outer powder-feeding mouth 7 is by described external device spraying TiO
2powder, at H
2gas and Ar throughput are to making spray gun 1 form A1 on central axis 10 under stable condition and under described design proportion formula
2o
3powder plasma flame flow and TiO
2powder plasma flame flow, at H
2described A1 under the effect of gas
2o
3powder plasma flame flow is near internal powder conveying mouth 2 formation high-temperature regions, region and described TiO
2powder plasma flame flow is forming low-temperature space near outer powder-feeding mouth 7 regions, by the higher Al of fusing point
2o
3powder is in the interior mode and by the lower TiO of fusing point of dusting
2beyond powder, the mode of dusting efficiently solves A1
2o
3powder and TiO
2the fusing point of the powder problem that differs greatly can be adjusted Al by internal powder conveying mouth 2 and outer powder-feeding mouth 7 simultaneously immediately
2o
3powder and TiO
2dust flow and the dusting speed form the adjustable composite plasma ceramic coating of gradient at metal base surface of powder, this has very large facilitation to improving deposition efficiency or the coating performance of described composite plasma ceramic coating.
In using, the technological parameter of external thermal spraying gun arranges as follows:
When the voltage adjustable extent of interior external thermal spraying gun during at 40～90V its preferred Control of Voltage at 60～70V;
When the electric current adjustable extent of interior external thermal spraying gun during at 400～900A its preferred Current Control at 500～600A;
When the Ar of interior external thermal spraying gun throughput adjustable extent during at 30～60L/min its preferred Ar throughput be controlled at 40～50L/min;
H when interior external thermal spraying gun
2throughput adjustable extent is its preferred H when 2～5L/min
2throughput is controlled at 3～4 L/min;
The flow-control of dusting of internal powder conveying mouth 2 is at 0～11L/min, and the dusting speed of internal powder conveying mouth 2 is controlled at 0～60g/min,
The flow-control of dusting of outer powder-feeding mouth 7 is at 0～11L/min, the dusting speed 0～60g/min of outer powder-feeding mouth 7.
embodiment 1:87wt%Al
2o
3+ 13wt%TiO
2composite plasma ceramic coating preparation
Internal powder conveying mouth and outer powder-feeding mouth connect with Praxair 3710 type plasma spraying equipments respectively.
Technological parameter is: voltage 70V, electric current 600A, Ar throughput 50L/min, H
2the flow 3L/min that dusts, the dusting speed 52.2g/min of internal powder conveying mouth of dust flow 10L/min, the outer powder-feeding mouth of throughput 3L/min, internal powder conveying mouth, the dusting speed 7.8g/min of outer powder-feeding mouth, outer powder-feeding mouth 7 are apart from 30 ° of level interval 80mm, deflection angles, the jetting height 15mm of internal powder conveying mouth, finally prepare even tissue, densification, the 87wt%Al that bond strength is good
2o
3+ 13wt%TiO
2composite plasma ceramic coating.
embodiment 2:60wt%Al
2o
3+ 40wt%TiO
2composite plasma ceramic coating preparation
Internal powder conveying mouth and outer powder-feeding mouth connect with Metco 7M type plasma spraying equipment respectively.
Technological parameter is: voltage 65V, electric current 550A, Ar throughput 45L/min, H
2the flow 6L/min that dusts, the dusting speed 36g/min of internal powder conveying mouth of dust flow 8L/min, the outer powder-feeding mouth of throughput 3L/min, internal powder conveying mouth, the dusting speed 24g/min of outer powder-feeding mouth, outer powder-feeding mouth 7 are apart from 10 ° of level interval 90mm, deflection angles, the jetting height 18mm of internal powder conveying mouth, finally prepare even tissue, densification, the 60wt%Al that bond strength is good
2o
3+ 40wt%TiO
2composite plasma ceramic coating.
embodiment 3:20wt%Al
2o
3+ 80wt%TiO
2composite plasma ceramic coating preparation
Internal powder conveying mouth and outer powder-feeding mouth connect with Praxair 3710 type plasma spraying equipments respectively.
Technological parameter is: voltage 60V, electric current 500A, Ar throughput 40L/min, H
2the flow 10L/min that dusts, the dusting speed 12g/min of internal powder conveying mouth of dust flow 4L/min, the outer powder-feeding mouth of throughput 3L/min, internal powder conveying mouth, the dusting speed 48g/min of outer powder-feeding mouth, outer powder-feeding mouth 7 are apart from the level interval 100mm of internal powder conveying mouth, deflection angle-15 °, jetting height 25mm, finally prepare even tissue, densification, the 20wt%Al that bond strength is good
2o
3+ 80wt%TiO
2composite plasma ceramic coating.
Claims (6)
1. a built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof, built-in thermal spraying gun comprises spray gun (1), internal powder conveying mouth (2), at the upper angle mount of spray gun (1), there is internal powder conveying mouth (2), the central axis (10) of spray gun (1) is given to the vertical interval of internal powder conveying mouth (2) mouth mouth, internal powder conveying mouth (2) mouth mouth is given to the level interval of the spray gun port of export, during thermal spraying, built-in thermal spraying gun has adjustable voltage and current, along central axis (10) configuration of spray gun (1), carries and has H
2gas, carries and has Ar gas along internal powder conveying mouth (2) configuration, under the protection of Ar gas, along internal powder conveying mouth (2), can spray separately A1
2o
3powder or TiO
2powder also forms plasma flame flow (9), and the external device of internal powder conveying mouth (2) is given, internal powder conveying mouth (2) under described external device coordinates dust flow and dusting speed adjustable respectively, H
2the flow of gas and Ar gas is also adjustable, Al
2o
3powder and TiO
2powder or other component form and mix or composite spraying powder by design proportion formula, and setting spray gun (1) external diameter is D; It is characterized in that:
The structure that is improved to interior external thermal spraying gun by built-in thermal spraying gun is: first at external diameter end face car system one annular groove (3) apart from spray gun (1) port of export, the circumferential regulating sleeve (6) that internal diameter is mated with described D is fastened on spray gun (1) port of export by several screws (4), in the outside of internal powder conveying mouth (2), set markings (16), the radial end face of the circumferential regulating sleeve (6) corresponding with markings (16) sets ring-type dial (17), the internal diameter of the through hole internal diameter > spray gun (1) of circumferential regulating sleeve (6), by bolt (5), radiai adjustment seat (8) is fastened in the through hole of circumferential regulating sleeve (6), the baseplane of fastening rear radiai adjustment seat (8) is parallel to each other with the central axis of circumferential regulating sleeve (6), holder (12) in radiai adjustment seat (8) above has outer powder-feeding mouth (7) by the 3rd screw (13) clip, the index dial (14) of the relative deflection angle of powder-feeding mouth (7) outside near radiai adjustment seat (8) end face holder (12) is provided with demonstration, the spout segment mark of outer powder-feeding mouth (7) is shown altitude scale line (15), the outer powder-feeding mouth (7) of above installing at holder (12) is controlled at 60～120mm apart from the level interval of internal powder conveying mouth (2),
During use: due to arbitrary screw (4) and bolt (5) in the installation site of circumferential regulating sleeve (6) in same level axis, by ring-type dial (17), can demonstrate arbitrary screw (4) in the upper present position of circumferential regulating sleeve (6), with present position, be as the criterion and aim at markings (16), by the fastening of several screws (4), can guarantee that outer powder-feeding mouth (7) and internal powder conveying mouth (2) are in same level axis again, now according to the demand of thermal spraying, also first by the 3rd screw (13), adjust the deflection angle of the relative spray gun of outer powder-feeding mouth (7) mouth mouth (1) central axis (10), by the second screw (11), adjust outer powder-feeding mouth (7) mouth mouth apart from the jetting height of central axis (10) again, internal powder conveying mouth (2) and outer powder-feeding mouth (7) are connected with described external device respectively, internal powder conveying mouth (2) is by described external device spraying A1
2o
3powder, outer powder-feeding mouth (7) is by described external device spraying TiO
2powder, at H
2gas and Ar throughput are to making spray gun (1) at the upper A1 of formation of central axis (10) under stable condition and under described design proportion formula
2o
3powder plasma flame flow and TiO
2powder plasma flame flow, at H
2described A1 under the effect of gas
2o
3powder plasma flame flow is near formation high-temperature region, internal powder conveying mouth (2) region and described TiO
2powder plasma flame flow is forming low-temperature space near outer powder-feeding mouth (7) region, by the higher Al of fusing point
2o
3powder is in the interior mode and by the lower TiO of fusing point of dusting
2beyond powder, the mode of dusting efficiently solves A1
2o
3powder and TiO
2the fusing point of the powder problem that differs greatly can be adjusted Al by internal powder conveying mouth (2) and outer powder-feeding mouth (7) simultaneously immediately
2o
3powder and TiO
2dust flow and the dusting speed form the adjustable composite plasma ceramic coating of gradient at metal base surface of powder,
The technological parameter of interior external thermal spraying gun arranges as follows:
When the voltage adjustable extent of interior external thermal spraying gun during at 40～90V its preferred Control of Voltage at 60～70V;
When the electric current adjustable extent of interior external thermal spraying gun during at 400～900A its preferred Current Control at 500～600A;
When the Ar of interior external thermal spraying gun throughput adjustable extent during at 30～60L/min its preferred Ar throughput be controlled at 40～50L/min;
H when interior external thermal spraying gun
2throughput adjustable extent is its preferred H when 2～5L/min
2throughput is controlled at 3～4 L/min;
The flow-control of dusting of internal powder conveying mouth (2) is at 0～11L/min, and the dusting speed of internal powder conveying mouth (2) is controlled at 0～60g/min,
The flow-control of dusting of outer powder-feeding mouth (7) is at 0～11L/min, the dusting speed 0～60g/min of outer powder-feeding mouth (7).
2. a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof according to claim 1, it is characterized in that: circumferentially regulating sleeve (6) can be around annular groove (3) rotating 360 degrees.
3. a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof according to claim 1, it is characterized in that: the angular range that index dial (14) shows and shows by degree is-90 °～90 °.
4. a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof according to claim 1, it is characterized in that: the outer powder-feeding mouth (7) of installing is in the vertical direction controlled at 80～100mm apart from the preferred levels spacing of internal powder conveying mouth (2).
5. a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof according to claim 1, it is characterized in that: described deflection angle is controlled at-45 °～45 °.
6. a kind of built-in thermal spraying gun is improved to interior external thermal spraying gun and using method thereof according to claim 1, it is characterized in that: outer powder-feeding mouth (7) mouth mouth is controlled at 10～30mm apart from the jetting height of central axis (10), and preferred described jetting height is controlled at 15～25mm.
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| CN201310327928.6A CN103506232B (en) | 2013-07-31 | 2013-07-31 | A kind of method built-in thermal spraying gun being improved to interior external thermal spraying gun |
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| CN103506232A true CN103506232A (en) | 2014-01-15 |
| CN103506232B CN103506232B (en) | 2015-12-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289913A (en) * | 2015-11-09 | 2016-02-03 | 郑州立佳热喷涂机械有限公司 | Liquid fuel axis powder feeding circular seam plug type supersonic speed spray gun |
| CN107447179A (en) * | 2017-07-21 | 2017-12-08 | 上海交通大学 | A kind of compound heat spraying method |
| TWI633937B (en) * | 2017-01-09 | 2018-09-01 | 漢翔航空工業股份有限公司 | Spraying device for stabilizing and concentrating flame flows and powder feeds |
| CN108504981A (en) * | 2018-05-31 | 2018-09-07 | 山东大学 | One kind adjustable multichannel powder feeding frame used for hot spraying and spraying equipment |
| CN110643919A (en) * | 2019-10-22 | 2020-01-03 | 兰州理工大学 | Method for preparing steel-based coating with shell-like structure on aluminum substrate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814575A (en) * | 1986-10-16 | 1989-03-21 | Compagnie Generale D'electricite | Method of surface-treating ceramic workpieces using a laser |
| CN2494710Y (en) * | 2001-08-31 | 2002-06-12 | 中国人民解放军第二炮兵工程学院 | Multifunction supersonic flame plating spray gun |
| CN2568314Y (en) * | 2002-08-13 | 2003-08-27 | 高阳 | Nozzle for plasma blast gun |
| CN201324710Y (en) * | 2008-11-28 | 2009-10-14 | 西北工业大学 | Kinetic-energy spraying gun using powder to prepare coatings |
-
2013
- 2013-07-31 CN CN201310327928.6A patent/CN103506232B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814575A (en) * | 1986-10-16 | 1989-03-21 | Compagnie Generale D'electricite | Method of surface-treating ceramic workpieces using a laser |
| CN2494710Y (en) * | 2001-08-31 | 2002-06-12 | 中国人民解放军第二炮兵工程学院 | Multifunction supersonic flame plating spray gun |
| CN2568314Y (en) * | 2002-08-13 | 2003-08-27 | 高阳 | Nozzle for plasma blast gun |
| CN201324710Y (en) * | 2008-11-28 | 2009-10-14 | 西北工业大学 | Kinetic-energy spraying gun using powder to prepare coatings |
Cited By (12)
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|---|---|---|---|---|
| CN105289913A (en) * | 2015-11-09 | 2016-02-03 | 郑州立佳热喷涂机械有限公司 | Liquid fuel axis powder feeding circular seam plug type supersonic speed spray gun |
| CN105289913B (en) * | 2015-11-09 | 2018-01-05 | 郑州立佳热喷涂机械有限公司 | Liquid fuel axle center powder feeding circumferential weld plug supersonic spray gun |
| TWI633937B (en) * | 2017-01-09 | 2018-09-01 | 漢翔航空工業股份有限公司 | Spraying device for stabilizing and concentrating flame flows and powder feeds |
| CN107447179A (en) * | 2017-07-21 | 2017-12-08 | 上海交通大学 | A kind of compound heat spraying method |
| CN107447179B (en) * | 2017-07-21 | 2019-12-10 | 上海交通大学 | Composite thermal spraying method |
| CN108504981A (en) * | 2018-05-31 | 2018-09-07 | 山东大学 | One kind adjustable multichannel powder feeding frame used for hot spraying and spraying equipment |
| CN108504981B (en) * | 2018-05-31 | 2024-01-02 | 山东大学 | Adjustable multi-path powder feeding frame for thermal spraying and spraying equipment |
| CN110643919A (en) * | 2019-10-22 | 2020-01-03 | 兰州理工大学 | Method for preparing steel-based coating with shell-like structure on aluminum substrate |
| CN112893024A (en) * | 2021-02-10 | 2021-06-04 | 深圳市成业机电设备有限公司 | Full-automatic integrated application transfer chain |
| CN112893024B (en) * | 2021-02-10 | 2022-05-10 | 深圳东方成业科技有限公司 | Full-automatic integrated application transfer chain |
| CN113426618A (en) * | 2021-05-12 | 2021-09-24 | 宁波环甬润保涂层科技有限公司 | Integrated bearing bush spraying process equipment and processing method |
| CN113373400A (en) * | 2021-06-11 | 2021-09-10 | 季华实验室 | Preparation method of wear-resistant ceramic coating and wear-resistant ceramic coating |
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| CN103506232B (en) | 2015-12-09 |
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