TWI551727B - Method for spraying an anti-wear coating on a super alloy surface by using propane as fuel gas and the system thereof - Google Patents

Description

Method for spraying anti-wear coating on surface of superalloy with propane as gas

The invention relates to a superalloy surface spraying process, in particular to a method for spraying anti-wear coating on a superalloy surface with propane as gas.

In recent years, domestic and foreign industry's application of superalloy surface has been continuously researched, which has improved the pressure resistance and wear resistance of superalloy surfaces, which makes the development of various superalloys continuous, relatively speaking, the surface of the alloy needs to be more The requirements for high compressive strength and wear resistance are also increasing. For example, it is applied to various gas turbine engines and blades or impellers. In the past few years, the technology used to improve the surface hardness and wear resistance of superalloys has not been used. Except for propylene or propane as spray gas, its tungsten carbide powder is sprayed on the superalloy surface to form an anti-wear coating, but propylene is rapidly rising due to the Kaohsiung gas explosion event, which makes the supply Unstable, using propylene as a spray process gas for spraying process, resulting in a significant reduction in the efficiency of the spray process of the affected workpiece, so some operators began to use propane instead of propylene as a superalloy spray high-performance anti-wear coating process Gas, because the price of propane is much cheaper than propylene, it can solve the problem of unstable supply.

The use of propane as the gas for spraying, but because of the odorant containing ethanethiol and paraffin (smoke) components, the servo motor flowmeter in the gas spraying equipment will be blocked during the spraying process, and the spraying is hindered. The gas circulation cannot be measured, causing the gas spraying equipment to crash, which seriously affects the quality of the anti-wear coating and the stability of the process.

And because the propane gas belongs to a three-carbon alkane, the chemical formula is C3H8. Because of its chemical properties, it is easy to change from a gaseous state to a liquid state during the spraying process due to pressure and environmental temperature difference, also because of ethanethiol and paraffin. (胫) causes the servo motor flowmeter in the gas spraying equipment to be blocked, which hinders the flow of the sprayed gas and cannot be measured, which causes the gas spraying equipment to crash, which seriously affects the quality of the anti-wear coating and the stability of the process.

As well as the nozzle of the conventional gas spraying device, please refer to FIG. 1 , which is a cross-sectional view of a conventional nozzle structure. The conventional nozzle 1 has a nozzle inlet end 2 and a nozzle outlet end 3 , and the spray gas is introduced from the nozzle inlet end 1 . And sprayed from the nozzle outlet end 2 for spraying. However, the internal aperture A of the nozzle outlet end 3 is linear from the inlet B to the outlet C. Therefore, the conventional nozzle 1 cannot raise the flow rate and flow rate of the spraying and powder feeding. Back pressure, the length and width of the combustion gas flame of the sprayed gas are insufficient, so that the tungsten carbide powder cannot be completely melted in the flame inner flame center, so that the tungsten carbide powder can not be densely and uniformly sprayed on the superalloy surface, so that the anti-wear coating is Performance does not meet the specification characteristics of high performance anti-wear coatings (GE F50TF71 specification requirements).

Therefore, how to overcome the above problems of propane instead of propylene as a super-alloy spraying process, and the shortage of the length and width of the combustion gas flame of the sprayed gas are the primary research and development issues of the present invention.

The object of the present invention is to provide a method for spraying anti-wear coating on a surface of a superalloy with propane as a gas, which mainly solves the problem that the propellant (including ethanethiol and paraffin) is not contained in the propane gas during the spraying process. Adhesive servo motor flowmeter contaminates anti-wear coating and affects spray gas control problems, improving super-alloy surface coating quality and process stability.

The object of the present invention is to provide a method for spraying anti-wear coating on a superalloy surface by spraying propane gas, which mainly solves the problem that the spray gas changes from a gaseous state to a liquid state due to a change in pressure and environmental temperature difference during the spraying process, resulting in a servo. The motor flowmeter obstructs the flow due to the blockage, which causes the gas spraying equipment to crash. In addition to making the process more stable, the quality of the high-performance anti-wear coating on the superalloy surface is further improved.

The object of the present invention is to provide a method for spraying anti-wear coating on a surface of a superalloy with propane as a gas, which mainly solves the problem that the tungsten carbide powder cannot be coated due to insufficient flow rate and flow rate of the spray gas during the spraying process. In the flame flame, the superalloy surface cannot be completely coated with an anti-wear coating, thereby fully improving the high-flow spray effect, so that the anti-wear coating on the superalloy surface achieves higher compressive strength and wear resistance.

In order to achieve the above object, the present invention is a method for spraying an anti-wear coating on a surface of a superalloy with propane as a gas, which uses propane gas and tungsten carbide powder as a super-alloy surface anti-wear coating. The main technical means of the layer, in which the odorant containing ethanethiol and paraffin (propane) in propane gas is completely purified and filtered by a spray gas purification filter control system to avoid sticking due to the odorant. To the servo motor flowmeter to contaminate the anti-wear coating and affect the gas control problem, and then increase the mixing ratio and the acceleration chamber pressure by a lengthening and diverging high-flow spray nozzle system to improve the flow rate and speed of the sprayed gas, so that During the spraying process, the tungsten carbide powder can be concentrated in the center of the flame inner flame to achieve complete melting and the tungsten carbide powder is completely coated on the surface of the superalloy to form an anti-wear coating. According to the superalloy surface, the superalloy surface has higher compressive strength and resistance. Grinding and other characteristics.

Among them, it is worth noting that in the process of heating gasification, purification and filtration of propane gas, it is necessary to prevent the propane gas after gasification from returning to liquid state by gas-cooling and constant pressure anti-liquefaction control system. Ensure that the spray gas is delivered in a gaseous state to the extended, diverging, high-flow spray nozzle system for the spray program.

More specifically, the spray gas purification filter control system is provided with a filter adsorption space and a gasification space.

More specifically, the filtered adsorption space is composed of at least one or more flow-through filter layer, a coarse mesh stainless steel wool wool filter layer, a fine mesh stainless steel steel wool filter layer, and an absorbent cotton filter layer.

More specifically, the flow-through filter layer is a preferred embodiment with an inverted inverted V-shaped adsorption plate.

More specifically, the gasification space is composed of a heating layer, a heat insulating layer, and a gasification layer.

More specifically, the extended diverging high-rate spray nozzle system is formed by combining an elongated inlet end and a diverging high-flow nozzle outlet end.

More specifically, the elongated inlet end of the elongated divergent high velocity spray nozzle system extends an elongated portion.

More specifically, the opening angle of the diverging high-flow nozzle outlet is preferably 1.0-3.0 degrees.

The techniques, means, and other effects of the present invention in order to achieve the above objects are exemplified as preferred embodiments and described in detail with reference to the drawings

"Knowledge"

1‧‧‧ nozzle

2‧‧‧ nozzle inlet end

3‧‧‧ nozzle outlet

A‧‧‧Internal aperture

B‧‧‧ entrance

C‧‧‧Export

"this invention"

A‧‧‧ baking procedure

b‧‧‧Object pre-processing procedures

C‧‧‧first filter

D‧‧‧Water-tight gasification program

e‧‧‧Spray procedure

T‧‧‧ gas cylinder

T1‧‧‧ gas storage barrel

10‧‧‧Spray gas purification filter control system

11‧‧‧ gas inlet

110‧‧‧ gas discharge pipeline

1100‧‧‧Drain hole

12‧‧‧ gas export

13‧‧‧Excretion

14‧‧‧Filter adsorption space

140‧‧‧ diversion filter

141‧‧‧Rough mesh stainless steel wool fleece filter

142‧‧‧ Fine mesh stainless steel wool fleece filter

143‧‧‧Adsorbed cotton filter

15‧‧‧ gasification space

150‧‧‧heating layer

151‧‧‧Insulation

152‧‧‧ gasification layer

20‧‧‧Gas spraying equipment

21‧‧‧Servo motor flowmeter

30‧‧‧Extended divergent high flow nozzle system

31‧‧‧Long inlet end

310‧‧‧Oxygen inlet

311‧‧‧ powder entrance

312‧‧‧propane gas inlet

313‧‧‧High pressure air inlet

32‧‧‧Expanded high flow nozzle outlet end

33‧‧‧Extended Department

40‧‧‧Spray gas constant temperature and constant pressure anti-liquefaction control system

41‧‧‧Anti-liquefaction device

42‧‧‧ thermostat

43‧‧‧ Thermometer

44‧‧‧ Constant pressure device

A1‧‧‧Internal aperture

B1‧‧‧ entrance

C1‧‧‧Export

F‧‧‧flame

K‧‧‧ superalloy

K1‧‧‧anti-wear coating

M‧‧‧

Figure 1 is a cross-sectional view of a conventional nozzle structure

Figure 2 is a schematic view showing the process of the present invention.

Fig. 3 is a schematic view showing the flame ejected by the elongated and divergent high-flow nozzle system of the present invention.

4 is a schematic view of a spray gas constant temperature and constant pressure anti-liquefaction control system of the present invention.

Figure 5 is a schematic view of a spray gas purification filtration control system of the present invention.

Fig. 6 is a schematic cross-sectional view showing the system of the elongated and divergent high-rate spray nozzle of the present invention.

Fig. 7 is a reference diagram of experimental test data of the extended and divergent high-rate spray nozzle system of the present invention.

Fig. 8 is a reference diagram of the data of the method for spraying the anti-wear coating on the surface of the superalloy object with propane as gas in the present invention. The experimental data conforms to the data reference drawing of the GE F50TF71 specification.

The invention mainly provides a method for spraying an anti-wear coating on a superalloy surface by spraying propane gas, wherein a key process comprises using propane as a spray gas and a cobalt carbide containing 8-18% cobalt as a tungsten carbide. Spray powder to be sprayed on the superalloy k surface.

Referring to FIG. 2, it is a schematic diagram of the process of the present invention. In order to optimize the fusion of the tungsten carbide powder with the propane gas during the spraying process, the tungsten carbide powder is first baked at an appropriate time and temperature. Procedure a (the temperature is 50-80 degrees C, the time is 5-10 hours), and in order to make the surface of the processed superalloy k available for the complete coating of the tungsten carbide powder, it is also necessary to first make the object on the superalloy k surface. Process b, and the object pre-processing program b includes first cleaning the surface of the object with copper, and then shielding the superalloy with high temperature tape. Finally, the surface of the superalloy k is sandblasted with alumina sand to form a superalloy k. Surface that can be sprayed.

After the baking process a of the tungsten carbide powder and the pre-treatment procedure b of the superalloy surface, the first filtration procedure c is performed on the propane gas stored in a gas cylinder T to make the gas cylinder T The dirty impurities inside are filtered and removed, and then a water vaporization process d is performed, and the propane gas is heated and vaporized into a gaseous state and stored in a gas storage tank T1.

However, as mentioned in the prior art, since the propane gas contains an odorant of ethanethiol and paraffin, the present invention requires a spray gas purification filter control system 10 to be used in propane gas. The ethanethiol and paraffin are completely purified and filtered to obtain the best quality propane gas, and the purified filtered propane gas is sent to a gas spraying device 20 for spraying.

Furthermore, the present invention utilizes an elongated diverging high velocity nozzle system 30 to connect the gas spraying apparatus 20 and tungsten carbide powder, and by the elongated diverging high velocity nozzle system 30, the superalloy k surface spraying procedure e The tungsten carbide powder is concentrated in the inner flame center of the flame F, and is completely melted on the surface of the super alloy k to form an anti-wear coating K1. As shown in FIG. 3, it is sprayed by the elongated and high-flow nozzle system of the present invention. Schematic diagram of flame F.

However, in order to ensure that the propane gas of the present invention is kept in a gaseous state from the beginning of the spraying process to the spraying of the superalloy K surface, the propane gas does not change from a gaseous state to a liquid state due to an external temperature difference or pressure, so The invention prevents the gasified propane gas from changing from a gaseous state to a liquid state by a spray gas constant temperature and constant pressure anti-liquefaction control system 40.

Further explaining the main means and functions of the spray gas constant temperature and constant pressure anti-liquefaction control system 40 of the present invention, please refer to FIG. 4, the main function is to achieve gasification of the propane gas in the gas cylinder T by heating and gasification. And to prevent the propane gas from returning from the gaseous state to the liquid state, and the system is mainly designed according to the invention, the propane is replaced by propane as the spray gas, and the propane gas is a three-carbon alkane, the chemical formula is C ₃ H ₈ Liquefied petroleum gas, also known as other hydrocarbons, produces a visible flame when added with sufficient oxygen (Oxygen) and high pressure air (Compressed Air), but due to the chemical properties of propane gas itself, it is easy to be used during the spraying process. When the pressure and ambient temperature difference change, the gas state changes back to the liquid state, and once the propane gas becomes liquid, the servo motor flow meter 21 in the gas spraying device 20 will be blocked, and the flow of the gas flowing through the gas spraying device cannot be measured, resulting in the gas spraying device. 20 crashes, resulting in the inability to perform the final spray procedure e.

Therefore, the spray gas constant temperature and constant pressure anti-liquefaction control system 40 of the present invention comprises: at least one anti-liquefaction device 41, a thermostat device 42, a temperature detector 43, a constant pressure device 44, and the above-mentioned instruments are set according to actual quantity requirements. The gas cylinder T, the gas storage tank T1 and the gas spraying equipment 20, and the anti-liquefaction device 41 (which can be a heating blanket) in the spray gas constant temperature and constant pressure anti-liquefaction control system 40, utilizes the anti-chemicalizer 41 amps The gas cylinder T, the gas storage tank T1 and the gas spraying equipment 20 which are installed at each stage for storing propane gas can heat and gasify the propane gas at any time, so that the propane gas is kept in a gaseous state at all times.

In addition, the temperature detector 43 is used to monitor the temperature change at any time, and the temperature value of the thermostat 42 is set in the range of 50-80 degrees C. More precisely, when the temperature detector 43 detects the combustion The temperature difference between the gas cylinder T, the gas storage tank T1 and the gas spraying equipment 20 is abnormal, that is, the temperature exceeds the range of 50-80 degrees C, and the thermostat 42 is immediately activated, so that the temperature inside the appliance can be maintained at the optimum temperature value at any time ( That is, the interval of 50-80 degrees C), so that the gas cylinder T, the gas storage tank T1 and the propane gas in the gas spraying equipment 20 will not change back from the gaseous state due to the temperature difference during the transfer process. The liquid state, which in turn blocks the servo motor flow meter 21 in the gas spraying device 20, causes the flow of the sprayed gas to be unmeasurable, causing a problem of the gas spraying device 20 being down.

In addition, because the propane gas in the transfer process will not only change from the gaseous state to the liquid state due to the change of the temperature difference, but also the phenomenon that the gas state changes back to the liquid state due to the pressure change, so the propane gas is prevented from being purified and filtered. When the spray gas purification filter control system 10 is transferred to the gas spraying device 20, the external pressure difference is affected, and the propane gas is changed from the gaseous state to the liquid state, so the spray gas purification filter control system 10 and the fuel are burned. The constant pressure device 44 is added between the gas spraying devices 20, and the constant pressure device 44 prevents the propane gas from being affected by the pressure change during the transfer process, wherein the pressure value of the constant pressure device 44 is 90-120 PSI. The optimum value, according to which the spray gas purification filter control system 10 can be used, the propane gas is not affected by the pressure difference during the transfer of the spray gas purification filter control system 10 and the gas spraying device 20 from the gaseous state. Liquid.

The spraying gas constant temperature and constant pressure anti-liquefaction control system 40 of the present invention can effectively solve the gaseous state of the propane gas in the whole spraying process (from the gas cylinder T→gas storage tank T1→gas spraying equipment 20) The phenomenon of changing back to the liquid state causes the servo motor flow meter 21 in the gas spraying equipment 20 to be blocked, hindering the flow of the sprayed gas and failing to measure, causing the gas spraying equipment 20 to crash, seriously affecting the quality of the coating.

In addition, please refer to FIG. 5, which is a schematic diagram of the spray gas purification filter control system of the present invention, further illustrating the main means and function of the spray gas purification filter control system 10 of the present invention, and the spray gas purification filter control system 10 includes: a gas inlet 11, a gas discharge line 110, a gas outlet 12, a drain port 13, a filter adsorption space 14 and a gasification space 15, and a gas discharge line 110 is connected to the gas inlet 11 And disposed below the filtered adsorption space 14, and the gasification space 15 is disposed above the filtration space 14.

The filter adsorption space 14 is composed of at least one layer of the flow guiding filter layer 140, a coarse mesh stainless steel wool wool filter layer 141, a fine mesh stainless steel wool wool filter layer 142 and an adsorbent cotton filter layer 143 from bottom to top. The flow guiding filter layer 140 can be a substantially inverted V-shaped adsorption plate, and the wire diameter of the coarse mesh stainless steel steel wool filter layer 141 is 1 mm, and the wire of the fine mesh stainless steel steel wool filter layer 142 The diameter is preferably 0.25 mm.

The purification and filtration method of the spray gas purification filter control system 10 mainly uses the filter adsorption space 14 to filter and remove the paraffin M in the propane gas. Since the particle size of the paraffin M itself is different, the filtration method provides propane. The gas is discharged from the exhaust pipe 110 connected to the gas inlet 11 into the bottom end of the spray gas purification filter control system 10, and is discharged upward from the discharge hole 1100 of the discharge pipe 110 into the filter adsorption space 14 to start filtering. The propane gas first passes through the first layer of the flow-through filter layer 140, and the flow-through filter layer 140 is used to design the inverted V-shaped adsorption plate, and the coarsest-grained paraffin M in the propane gas is first adsorbed and filtered. .

Although most of the coarsest particles of paraffin M are first filtered out by the first layer of the flow-through filter layer 140, in fact, there are still fine particles of paraffin M remaining in the propane gas. The propane The gas continues to enter the coarse mesh stainless steel wool wool filter layer 141 and the fine mesh stainless steel wool wool filter layer 142, and the finer particulate wax wax M in the propane gas is filtered again and removed.

After filtering through the first layer of the flow guiding filter layer 140, the coarse mesh stainless steel wool wool filter layer 141 and the fine mesh stainless steel wool wool filter layer 142, the paraffin M particles remaining in the propane gas are very small, but the spraying of the present invention The main technology of the gas purification filtration control system 10 is to completely filter the paraffin M in the propane gas. Therefore, the fine pores of the adsorption cotton filter layer 143 are finally used to completely remove all the paraffin M in the propane gas. .

Accordingly, the paraffin M in the propane gas is filtered and removed by the filtered adsorption space 14 to leave only ethyl mercaptan, and the ethyl mercaptan enters the gasification space 15 to be heated and vaporized, and the gasification space 15 is A heating layer 150, a heat insulating layer 151 and a gasifying layer 152 are sequentially disposed. The heating layer 150 is used to heat and vaporize the ethanethiol, and then the temperature is maintained through the insulating layer 151 to enter the gasifying layer 152.

Finally, the ethanethiol and the propane gas have different characteristics according to the specific gravity, the ethanethiol is discharged from the discharge port 13, and the optimally purified propane gas obtained by the purification and filtration is output from the gas outlet 12.

Accordingly, the spray gas purification filter control system 10 of the present invention can effectively purify and filter out the dissolving agent (containing ethanethiol and paraffin M) in the propane gas, thereby solving the problem in the spraying process. Propane gas still contains a odorant (containing ethanethiol and paraffin M) and sticks to the servo motor flow meter 21 of the gas spraying device 20 to contaminate the coating and affect the control of the spray gas.

The invention completely purifies and filters the dissolving agent (containing ethanethiol and paraffin) in the propane gas through the above-mentioned spray gas purification filter control system 10 and the spray gas constant temperature and pressure anti-liquefaction control system 40, and controls the propane. The gas does not change back to the liquid state due to the gaseous state during the entire spraying process, so it can be surely solved by the servo motor flow meter 21 in the gas spraying device 20 due to sticking to the odorant (containing ethanethiol and paraffin). Causing blockages, hindering the flow of spray gas and measuring problems.

The invention further enhances the effect of high-density, high-hardness and high-strength adhesion of the anti-wear coating K1 on the surface of the alloy K. The gas spraying device 20 is connected to the elongated and divergent high-flow nozzle system 30, see FIG. Shown is a schematic cross-sectional view of the extended diverging high velocity spray nozzle system of the present invention. The extended diverging high velocity spray nozzle system 30 is connected by an elongated inlet end 31 to a divergent high flow nozzle outlet end 32 combination. The elongated inlet end 31 includes an elongated portion 33, an oxygen inlet 310, a powder inlet 311, a propane gas inlet 312, and a high pressure air inlet 313.

The propane gas is controlled by the servo motor flow meter 21 in the gas spraying device 20, and then enters the extended diverging high-rate spray nozzle system 30 via the propane gas inlet 312, and the oxygen, tungsten carbide The powder and the high-pressure air also enter the elongated and divergent high-rate spray nozzle system 30 through the oxygen inlet 310, the powder inlet 311, and the high-pressure air inlet 313, respectively. Since the propane gas belongs to the combustible gas, the oxygen belongs to the combustion-supporting gas, and the application is repeated. The flame is generated by the combustion of the gas by a suitable ignition point (this is a prior art, so the inventors will not repeat them).

The special design of the elongated diverging high-rate spray nozzle system 30 of the present invention is the extension portion 33 extending from the elongated inlet end 31, whereby the elongated inlet end 31 can be increased by the design of the elongated portion 33. The length, compared to the conventional nozzle 1, does not have the design of the elongated portion 33 of the present invention, and for the embodiment of the present invention, the length of the elongated inlet end 31 is preferably in the range of 110-140 mm.

Another special design is at the outlet end 32 of the divergent high flow nozzle. The cross-sectional view of FIG. 6 shows that the internal aperture A1 of the diverging high flow nozzle outlet end 32 is gradually expanded from the inlet B1 to the outlet C1. Compared with the conventional design, the internal aperture A of the nozzle 1 is completely different from the design of the inlet B to the outlet C. For the embodiment of the present invention, the opening end angle of the outlet end 32 of the diverging high-flow nozzle is interposed. The 1.0-3.0 degree interval is the best value.

Accordingly, the extended diverging high-rate spray nozzle system 30 of the present invention combines the design of the elongated inlet end 31 and the divergent high-flow nozzle outlet end 32, and is adjusted to the DOE (Design Of Experiment) by the present invention. Under the conditions of optimal parameters, level, blending heat energy and kinetic energy (reaction time, reaction temperature, gas flame speed), the following advantages are indeed achieved.

Through the extended diverging high-flow spray nozzle system 30, the propane gas flow rate and flow rate (160-210 SCFH) and the feed back pressure (80-110 PSI) can be increased, and the length and width of the combustion gas flame of the sprayed gas can be increased, and The tungsten carbide powder is completely concentrated in the center of the flame inner flame to achieve a complete fusion effect, so that the tungsten carbide powder can be completely sprayed on the surface of the super alloy K, and a high-performance anti-wear coating K1 is formed, as shown in FIG. The invention test data reference drawing of the extended diverging high-rate spray nozzle system of the present invention.

Accordingly, the present invention uses propane as a gas to spray the anti-wear coating on the surface of the superalloy, and the main technical means is combined with (1) spraying gas purification filter control system, (2) spraying gas constant temperature and constant pressure prevention The liquefaction control system and (3) the lengthening and expanding type high-flow spray nozzle system are three systems, and indeed solve the lack of the prior art, thereby achieving the following effects.

In the first point, the spray gas purification filter control system 10 of the present invention can effectively achieve the effect of completely purifying and filtering out the dissolving agent (containing ethanethiol and paraffin) in the propane gas, thereby solving the problem in the spraying process. The propane gas still contains a odorant (containing ethanethiol and paraffin) and adheres to the servo motor flow meter 21 of the gas spraying device 20, contaminating the anti-wear coating K1 and affecting the control of the spray gas, and Improve process stability.

In the second point, the sprayed gas constant temperature and constant pressure anti-liquefaction control system 40 of the present invention can surely control the effect that the propane gas continuously maintains a gaseous state from the beginning of the spraying process to the superalloy K surface spraying process, thereby effectively solving the propane burning. Because the temperature difference or pressure difference changes from the gaseous state to the liquid state, The servo motor flow meter 21 in the gas-fired spraying device 20 is blocked, hindering the flow of the sprayed gas and cannot be measured, resulting in a problem of the gas-spraying equipment 20 being down, further improving the high-performance anti-wear coating K1 quality.

At the third point, the elongated and high-flow spray nozzle system 30 of the present invention can increase the flow rate and flow rate (160-210 SCFH) of the propane gas throughout the spraying process, and increase the powder back pressure (80-110 PSI). The length and width of the combustion gas flame of the sprayed gas are increased, and the tungsten carbide powder is completely concentrated in the center of the flame inner flame to achieve a complete fusion effect, so that the tungsten carbide powder can be completely sprayed on the surface of the super alloy K to form a high performance resistant Compressive coating K1 with compressive strength and wear resistance.

The anti-wear coating K1 of the present invention is subjected to human testing to obtain the following data, and the anti-wear coating K1 achieves high density (Porsity <1%), high hardness (>1,000 HV), high bond strength (>10,000 PSI), etc. High performance anti-wear coating K1 characteristic requirements, this data has been checked to meet GE F50TF71 specification requirements (Required Limits), please refer to Figure 8, the present invention uses propane as gas for super-alloy object K surface anti-wear coating The experimental data of the layer K1 method is in accordance with the data reference diagram of the GE F50TF71 specification.

In the above, the above embodiments and drawings are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention. It should be within the scope of the patent of the present invention.

A‧‧‧ baking procedure

b‧‧‧Object pre-processing procedures

C‧‧‧first filter

D‧‧‧Water-tight gasification program

e‧‧‧Spray procedure

T‧‧‧ gas cylinder

T1‧‧‧ gas storage barrel

10‧‧‧Spray gas purification filter control system

20‧‧‧Gas spraying equipment

21‧‧‧Servo motor flowmeter

30‧‧‧Extended divergent high flow nozzle system

40‧‧‧Spray gas constant temperature and constant pressure anti-liquefaction control system

41‧‧‧Anti-liquefaction device

42‧‧‧ thermostat

43‧‧‧ Thermometer

44‧‧‧ Constant pressure device

Claims (10)

A method for spraying an anti-wear coating on a surface of a superalloy with propane as a gas, comprising: providing a propane as a spray gas and a tungsten carbide as a powder to be sprayed on the surface of the superalloy, and storing the propane in At least one gas cylinder; another super alloy is prepared for the object pretreatment process, and the tungsten carbide powder is baked; a spray gas constant temperature constant pressure anti-liquefaction control system is provided in the gas cylinder, a gas storage tank and a gas spraying device, and heating the gas cylinder, the gas storage barrel and the gas spraying equipment to heat and gasify the propane gas to form a gaseous state, wherein the gas cylinder and the gas storage The barrel and the gas spraying device are connected to each other, and a gas spraying purification filter control system is connected between the gas storage barrel and the gas spraying device; wherein the spraying gas purification filtering control system receives the delivery from the gas storage barrel Propane gas, and completely purify and filter out the propane gas internal odorant to obtain the best quality propane gas and then transfer it to the gas spraying equipment; provide a lengthening and diverging high flow rate The coating nozzle system is connected to the gas spraying device, and the extended diverging high-rate spraying nozzle system receives propane gas and the tungsten carbide powder from the spray gas purification filter control system, and improves the flow rate, speed and delivery during spraying. The powder back pressure allows the tungsten carbide powder to be concentrated in the flame inner flame center to be completely melted, and then sprayed on the superalloy surface to form an anti-wear coating. A method for spraying an anti-wear coating on a surface of a superalloy with propane as described in claim 1, wherein the pretreatment of the article comprises first cleaning the surface of the superalloy with copper, and then performing the superalloy with a high temperature tape. Covering, finally sandblasting the superalloy surface with alumina sand. A method for spraying an anti-wear coating on a superalloy surface with propane as a gas as described in claim 1, wherein the tungsten carbide powder has a baking process temperature of 50-80 degrees C and a baking time of 5-10 The hour is the best value. The method for spraying an anti-wear coating on a surface of a superalloy with propane as described in claim 1, wherein the spray gas constant temperature and constant pressure anti-liquefaction control system is composed of at least one liquid trap and a thermostat Forming and arranging it on a gas cylinder, a gas storage tank and a gas spraying device, and connecting a constant pressure device between the spray gas purification filter control system and the spraying device, and the liquid pressure device is a heating device The electric blanket has a temperature of 50-80 degrees C as an optimum value, and the constant pressure is preferably 90-120 PSI. The method of claim 1, wherein the propane gas is used for spraying an anti-wear coating on a superalloy surface, wherein the spray gas constant temperature and constant pressure anti-liquefaction control system further comprises at least one temperature detector and is set On gas cylinders, gas storage tanks and gas spraying equipment, the temperature can be monitored at any time. The method for spraying an anti-wear coating on a surface of a superalloy with propane as described in claim 1, wherein the spray gas purification filter control system is provided with a gas inlet, a gas outlet, a drain, a filter adsorption space and a gasification space, wherein the gas inlet is connected to a gas discharge pipe and disposed at the bottom of the filter adsorption space, and the filter adsorption space is used to completely filter and adsorb the paraffin in the odor agent, and The gasification space vaporizes the ethanethiol in the odorant, and finally the ethanethiol and propane have different characteristics according to the specific gravity of the gas, the ethanethiol is discharged from the discharge port, and the purified and filtered propane gas is discharged from the gas outlet. . A method for spraying an anti-wear coating on a superalloy surface with propane as a gas as described in claim 1, wherein the elongated diverging high-rate spray nozzle system is connected by a lengthened inlet end to a diverging high flow rate The nozzle outlet ends are combined, wherein the elongated inlet end includes an extension, and the internal aperture of the divergent high flow nozzle outlet end is designed to gradually expand from the inlet to the outlet. As described in claim 6, the propane is used as a gas for the superalloy surface spray anti-wear coating. The method, wherein the filtered adsorption space of the spray gas purification filter control system comprises a flow-through filter layer, a coarse mesh stainless steel steel wool filter layer, a fine mesh stainless steel steel wool filter layer and an adsorption cotton filter layer from bottom to top The flow guiding filter layer may be a substantially inverted V-shaped adsorption plate, the coarse mesh stainless steel wool and the fine mesh stainless steel steel wool may be at least one layer, and the wire diameter of the coarse mesh stainless steel steel wool filter layer is 1 mm. For the optimum value, the wire diameter of the fine mesh stainless steel wool wool filter layer is 0.25 mm, and the gasification space is composed of a heating layer, a heat insulating layer and a gasifying layer. A method for spraying an anti-wear coating on a surface of a superalloy with propane as described in claim 7, wherein the length of the elongated inlet end is preferably 110-140 mm, and the diverging high-flow nozzle outlet The opening angle is preferably 1.0-3.0 degrees. A method for spraying an anti-wear coating on a superalloy surface with propane as a gas as described in claim 7, wherein the elongated inlet end comprises an oxygen inlet, a powder inlet, a propane gas inlet, and a high pressure air inlet. .