CN106148875B - The method for being used for superalloy surface spraying wear-resisting coating when combustion gas with propane - Google Patents
The method for being used for superalloy surface spraying wear-resisting coating when combustion gas with propane Download PDFInfo
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Abstract
The invention discloses a kind of methods being used for superalloy surface spraying wear-resisting coating when combustion gas with propane,The technical way of propane combustion gas and tungsten carbide powder as superalloy object surface wear-resisting coating,Stink agent Economical Purification and the filtering of ethyl mercaptan and paraffin wax (shin class) will wherein be contained in propane combustion gas by a spraying combustion gas purifying filtering control system,Flaring type high flow rate spray nozzle system is lengthened by one improve mixing ratio and acceleration lock pressure again,So that tungsten-carbide powder can be concentrated on to flame internal flame center in spraying process,Reach to melt completely and completely apply tungsten-carbide powder and invests one wear-resisting coating of superalloy surface formation,The another present invention prevents the propane combustion gas after gasification from becoming liquid again by gaseous state by a spraying combustion gas constant temperature and pressure liquid-proof networked control systems,Ensure that spray combustion gas is delivered to lengthening flaring type high flow rate spray nozzle system progress spray procedure with gaseous state shape always,Make superalloy surface that there is the wear-resisting coating characteristic of more high compressive strength and wear-resistant contour performance.
Description
Technical field
The present invention relates to superalloy surface spraying processing procedures, particularly relate to one kind with propane when combustion gas is sprayed for superalloy surface
Apply wear-resisting coating method.
Background technology
Domestic and international dealer constantly researched and developed the application power on superalloy surface in recent years, made the pressure resistance on its superalloy surface
Degree and wear resistence are promoted many so that various superalloy applications can continuously develop, and comparatively object alloy surface is needed more
The requirement threshold of high compressive strength and antiwear characteristic is also more and more high, such as：Apply in various gas-turbine engines and blade or
In terms of impeller, and it was used for being promoted the technology of superalloy case hardness and endurance at this several years and is done with propylene or propane nothing more than adopting
For spraying combustion gas its tungsten-carbide powder is sprayed at superalloy surface, use to form a wear-resisting coating, but propylene because price it is fast
Speed goes up, and more so that the supply of goods can not be stablized, using propylene as the spraying combustion gas of spraying processing procedure, leads to the spray of impacted workpiece
It applies process efficiency to be greatly reduced, therefore there have part dealer to start to be wear-resistant as superalloy spraying high-performance using propane replacement propylene
The spraying combustion gas for consuming coating processing procedure can more solve supply of material instability problem because propane prices are with respect to the cheap many of propylene.And
Using propane as spray combustion gas, ethyl mercaptan and paraffin are but contained because in（Hydro carbons）The stink agent of composition can make in spraying processing procedure
The servo motor flow meter from being blocked in combustion gas spraying equipment is obtained, and hinders spraying gas circulation that can not measure, combustion gas is caused to spray
Equipment works as machine, seriously affects wear-resisting coating quality and process stability.And because propane combustion gas is to belong to a kind of alkane of three carbon, change
Formula is C3H8, become by gaseous state when changing because of pressure and circumstance of temperature difference easily in spraying process because of the relationship of chemical property itself
Liquid is returned, equally because of ethyl mercaptan and paraffin（Hydro carbons）The servo motor flow meter from being blocked in combustion gas spraying equipment is caused, and is hindered
Spraying gas circulation can not measure, and cause combustion gas spraying equipment to work as machine, seriously affect wear-resisting coating quality and process stability.
Therefore, it is necessary to solve above-mentioned spraying combustion gas disadvantage and the spray for spraying processing procedure as superalloy with propane replacement propylene
The problem of applying the burning gases length of flame and short of width of combustion gas.
Invention content
Technical problem to be solved by the present invention lies in provide one kind with propane when combustion gas is anti-for superalloy surface spraying
Coating process is ground, is that solve will not be because smelly agent in propane combustion gas (including ethyl mercaptan and paraffin) adhesion be watched when spray processing procedure
It takes motor flowmeter and pollutes wear-resisting coating and influence spraying combustion gas control problem, promote superalloy face coat quality and processing procedure
Stability.
The present invention also technical problems to be solved are to provide one kind with propane when spraying combustion gas is sprayed for superalloy surface
Wear-resisting coating method is applied, spraying combustion gas is mainly solved and is become again by gaseous state due to pressure and circumstance of temperature difference change in spraying process
Liquid, the problem of causing servo motor flowmeter to hinder flow that combustion gas spraying equipment is caused to work as machine because of blocking, except making processing procedure more
Stablize outer further promotion superalloy surface high-performance wear-resisting coating quality.
The another technical problems to be solved of the present invention are to provide one kind with propane when combustion gas is anti-for superalloy surface spraying
Coating process is ground, is to solve to cause tungsten-carbide powder can not be by because of spraying gas flow and flow velocity deficiency in spray processing procedure
It is coated in flame flame, and leading to the problem of superalloy surface can not be by one wear-resisting coating of complete application, and then completely promote height
Flow velocity, which sprays effect, makes the wear-resisting coating on superalloy surface reach more high compressive strength and the characteristics such as wear-resisting.
To solve the above problems, the present invention is a kind of side with propane when combustion gas for superalloy surface spraying wear-resisting coating
Method is to use propane combustion gas and tungsten carbide powder as the technical way of superalloy abrasion-resistant surface coating, wherein being
It is by a spraying combustion gas purifying filtering control system that the stink agent for containing ethyl mercaptan and paraffin (hydro carbons) in propane combustion gas is complete
Purifying and filtering avoid polluting wear-resisting coating and influence combustion gas control problem because smelly agent adhesion is to servo motor flowmeter,
Again by one lengthen flaring type high flow rate spray nozzle system improve mixing ratio with accelerate lock pressure, improve spraying combustion gas flow with
Speed so that tungsten-carbide powder can be concentrated on to flame internal flame center in spraying process, reach melting completely and by tungsten carbide powder
Last complete apply invests the purpose that superalloy surface forms wear-resisting coating, according to making superalloy surface have more high compressive strength and wear-resistant
Etc. characteristics.
Wherein, it should be noted that must be by a spray in propane combustion gas carries out heating and gasifying and purifying, filter process
Combustion gas constant temperature and pressure liquid-proof networked control systems are applied, prevent the propane combustion gas after gasification from becoming liquid again by gaseous state, are fired in order to ensuring to spray
Gas, which is delivered to gaseous state shape always, lengthens flaring type high flow rate spray nozzle system progress spray procedure.
It more specifically points out, spraying combustion gas purifying filtering control system is provided with a filtering adsorption space and a gasification is empty
Between.
It more specifically points out, which is water conservancy diversion filter layer, the coarse net stainless steel steel wire by least more than one
Suede filter layer, fine-structure mesh stainless steel steel wool filter layer and adsorption cotton filter layer are constituted.
It more specifically points out, the water conservancy diversion filter layer is using generally in reverse V-shaped adsorption plate as most preferred embodiment.
It more specifically points out, which be made of heating layer, insulating layer and gasification layer.
It more specifically points out, which is to connect a flaring by an extended type arrival end
Type high flow rate nozzle exit end is composed.
It more specifically points out, the extended type arrival end of the lengthening flaring type high flow rate spray nozzle system is to extend one to lengthen
Portion.
It more specifically points out, the opening angle of the flaring type high flow rate jet expansion is using 1.0-3.0 degree as optimum value.
Description of the drawings
Fig. 1 is conventional nozzle arrangements sectional view
Fig. 2 is processing procedure schematic diagram of the present invention.
Fig. 3 is the flame schematic diagram that the present invention lengthens that flaring type high flow rate nozzle system is sprayed.
Fig. 4 is present invention spraying combustion gas constant temperature and pressure liquid-proof networked control systems schematic diagram.
Fig. 5 is present invention spraying combustion gas purifying filtering control system schematic diagram.
Fig. 6 is that the present invention lengthens flaring type high flow rate spray nozzle system schematic cross-sectional view.
Fig. 7 is that the present invention lengthens flaring type high flow rate spray nozzle system experimentation test data reference chart.
Fig. 8 is methods experiment data of the present invention with propane when combustion gas for superalloy object surface spraying wear-resisting coating
Meet GE F50TF71 code requirement data reference figures.
Reference sign
Nozzle 1
The upstream side of the injector 2
Nozzle exit end 3
Internal aperture A
Entrance B
Export C
Toast program a
Object pre-treatment program b
First of filter c
Water proof gasification program d
Spray procedure e
Gas cylinder T
Gas receiver T1
Spray combustion gas purifying filtering control system 10
Fuel gas inlet 11
Gas emission pipeline 110
Discharge orifice 1100
Gas outlet 12
Discharge port 13
Filter adsorption space 14
Water conservancy diversion filter layer 140
Coarse net stainless steel steel wool filter layer 141
Fine-structure mesh stainless steel steel wool filter layer 142
Adsorption cotton filter layer 143
Gasification space 15
Heating layer 150
Insulating layer 151
Gasification layer 152
Combustion gas spraying equipment 20
Servo motor flowmeter 21
Lengthen flaring type high flow rate nozzle system 30
Extended type arrival end 31
Oxygen intake 310
Powdering inlet 311
Propane fuel gas inlet 312
High-pressure air inlet 313
Flaring type high flow rate nozzle exit end 32
Lengthening part 33
Spray combustion gas constant temperature and pressure liquid-proof networked control systems 40
Anti- liquefier 41
Thermostat 42
Thermal detector 43
Constant-voltage equipment 44
Internal aperture A1
Entrance B1
Export C1
Flames F exiting
Superalloy K
Wear-resisting coating K1
Paraffin M.
Specific implementation mode
The present invention is mainly to provide a kind of method being used for superalloy surface spraying wear-resisting coating when spraying combustion gas with propane,
Using propane in its crucial processing procedure as spraying combustion gas, and the 8-18% containing cobalt tungsten carbide as superalloy k tables to be sprayed on
The dusty spray in face.
It please join shown in Fig. 2, be processing procedure schematic diagram of the present invention, to enable tungsten-carbide powder to be made in spraying with propane combustion gas
It is presented when journey and optimizes fusion, need first to carry out the baking program a of an appropriate time and temperature to tungsten carbide powder that (its temperature is
50-80 degrees Celsius, the time be 5-10 hour), and be to make the processed surfaces superalloy k for tungsten-carbide powder complete application,
Also need first to be object pre-treatment program b to the surfaces superalloy k, and object pre-treatment program b including the use of the third bronze medal first to object table
Face is cleaned, and high temperature gummed tape is recycled to screen superalloy, finally carries out sandblasting to the surfaces superalloy k using aluminum oxide sand,
The surface for making superalloy k form one for spraying.
It connects, after carrying out baking program a to tungsten-carbide powder and superalloy surface is object pre-treatment program b, to depositing
The propane combustion gas being put in a gas cylinder T carries out first of filter c, and the dirty contaminant filter in gas cylinder T is made to go
Except water proof gasification program d is carried out again, propane gas heating is gasificated into gaseous state shape and deposits in a gas receiver T1.
However as mentioned in prior art because in propane combustion gas contain ethyl mercaptan and paraffin（Hydro carbons）Stink agent,
Therefore the present invention need to utilize a spraying combustion gas purifying filtering control system 10 by the ethyl mercaptan and paraffin Economical Purification in propane combustion gas
And filter out, to obtain the propane combustion gas of best in quality, filtered propane fuel gas transmission will be purified to a combustion gas spraying equipment
20 are sprayed.
Furthermore the present invention is to lengthen flaring type high flow rate nozzle system 30 using one to connect the combustion gas spraying equipment 20 and carbon
Change tungsten powder, by the lengthening flaring type high flow rate nozzle system 30 so that by tungsten carbide in superalloy k surface spraying programs e
Powder concentrates on flames F exiting internal flame center, reaches and is melted in the surfaces superalloy k formation one wear-resisting coating K1, cooperation Fig. 3 institutes completely
Show, is the flames F exiting schematic diagram that the present invention lengthens that flaring type high flow rate nozzle system is sprayed.
For ensure the present invention propane combustion gas since spray processing procedure to progress superalloy K surface sprayings during always
Gaseous state is kept, without because of the phenomenon that external temperature difference or pressure cause propane combustion gas to become liquid again by gaseous state, therefore the present invention is
Prevent the propane combustion gas after having gasified from becoming liquid again by gaseous state by a spraying combustion gas constant temperature and pressure liquid-proof networked control systems 40.
40 main means of spraying combustion gas constant temperature and pressure liquid-proof networked control systems and function further illustrated the present invention, please match
It closes shown in Fig. 4, major function is to reach to carry out heating and gasifying formation gaseous state shape to the propane combustion gas in gas cylinder T, and prevent
Propane combustion gas becomes liquid again again by gaseous state, and designs this system and mainly substitute propylene as spraying combustion because the present invention changes with propane
Gas, and propane combustion gas is a kind of alkane of three carbon, chemical formula C3H8, also known as liquefied petroleum gas is the same with other hydro carbons, adds
Visible flame is generated when entering sufficient oxygen (Oxygen) and pressure-air (Compressed Air), but because of propane combustion gas itself
The relationship of chemical property becomes liquid again when pressure and circumstance of temperature difference change easily in spraying process by gaseous state, and propane combustion gas
The servo motor flowmeter 21 in combustion gas spraying equipment 20 will be made to block once becoming liquid, and hinders spraying gas circulation can not
It measures, causes combustion gas spraying equipment 20 to work as machine, lead to not carry out last spray procedure e.
Therefore the spraying combustion gas constant temperature and pressure liquid-proof networked control systems 40 of the present invention include：The anti-liquefaction of at least more than one
Device 41, thermostat 42, thermal detector 43, constant-voltage equipment 44, and above-mentioned utensil is arranged in the combustion gas steel according to actual quantity demand
On bottle T, gas receiver T1 and combustion gas spraying equipment 20, and spray the anti-liquefier in combustion gas constant temperature and pressure liquid-proof networked control systems 40
41 (can be a heating electrical blanket), utilize gas cylinder T, the gas receiver that chemical defence device 41 is mounted on to the storage propane combustion gas of each stage
In T1 and combustion gas spraying equipment 20, heating and gasifying can be carried out at any time to propane combustion gas, propane combustion gas is made to be always maintained at gaseous state.
Another profit, coordinating the thermostat 42 using the thermal detector 43, monitoring temperature changes at any time, and the thermostat 42
Temperature value is 50-80 degrees Celsius of section of setting, it is more acurrate for once monitor gas cylinder T, gas receiver when thermal detector 43
The temperature fall of T1 and combustion gas spraying equipment 20 is abnormal, that is, temperature exceeds 50-80 degrees Celsius of section, and the thermostat 42 is vertical
Start, so that temperature in utensil is maintained at optimum temperature value (i.e. 50-80 degrees Celsius of section) at any time, the thus combustion
Propane combustion gas in gas cylinder T, gas receiver T1 and combustion gas spraying equipment 20 just will not be become because of in transmittance process by the temperature difference
Change and liquid is become again by gaseous state again, and then block the servo motor flowmeter 21 in combustion gas spraying equipment 20, causes to spray combustion gas stream
It is logical to measure, the problem of causing combustion gas spraying equipment 20 to work as machine phenomenon.
In addition, becoming liquid phenomenon again by gaseous state because propane combustion gas can not only be generated in transmittance process because of difference variation, together
Sample is as pressure change generates the phenomenon that becoming liquid again by gaseous state, therefore is to prevent purified filtered propane combustion gas from existing
Being purified filtering control system 10 by spraying combustion gas and be transferred to during combustion gas spraying equipment 20 is influenced by external pressure difference, makes
Propane combustion gas becomes liquid again again by gaseous state shape, thus in the spraying combustion gas purify filtering control system 10 and combustion gas spraying equipment 20 it
Between add the constant-voltage equipment 44, so that propane combustion gas is not under pressure in transmittance process the shadow of change by the constant-voltage equipment 44
It rings, the wherein pressure value of the constant-voltage equipment 44 utilizes spraying combustion gas purifying filtering control accordingly using 90-120PSI as optimum value
System 10 can propane combustion gas will not be in the spraying combustion gas purifies filtering control system 10 and 20 transmittance process of combustion gas spraying equipment
The influence for the difference that is under pressure becomes liquid again by gaseous state.
Propane combustion gas can be effectively solved really whole through present invention spraying combustion gas constant temperature and pressure liquid-proof networked control systems 40
The phenomenon that a spraying processing procedure becomes liquid again (by gas cylinder T, gas receiver T1, combustion gas spraying equipment 20) because of gaseous state, causes combustion gas
Servo motor flowmeter 21 in spraying equipment 20 blocks, and hinders spraying gas circulation that can not measure, leads to combustion gas spraying equipment
20 the problem of working as machine, seriously affecting coating quality.
It is present invention spraying combustion gas purifying filtering control system schematic diagram, furtherly in addition, please coordinating again shown in Fig. 5
Bright present invention spraying combustion gas purifying filtering 10 main means of control system and function, spraying combustion gas purifying filtering control system 10
Including：Adsorption space 14 is filtered in one fuel gas inlet 11, a gas emission pipeline 110, a gas outlet 12, a discharge port 13, one
And a gasification space 15, and gas emission pipeline 110 is to connect the fuel gas inlet 11 and be set under the filtering adsorption space 14
Side, and the gasification space 15 is setting 14 top of filter space.
Wherein, filtering adsorption space 14 be by least one layer more than water conservancy diversion filter layer 140, a coarse net stainless steel steel wool
Filter layer 141, a fine-structure mesh stainless steel steel wool filter layer 142 and an adsorption cotton filter layer 143 are from bottom to top sequentially constituted, wherein
The water conservancy diversion filter layer 140 can be generally be in reverse V-shaped adsorption plate, and the steel wire diameter of the coarse net stainless steel steel wool filter layer 141 with
1mm is optimum value, the steel wire diameter of the fine-structure mesh stainless steel steel wool filter layer 142 using 0.25mm as optimum value.
The purifying filter type of spraying combustion gas purifying filtering control system 10, mainly utilizes the filtering adsorption space 14
By the paraffin M filtering removals in propane combustion gas, because paraffin M granular size itself differs, therefore filter type is to provide propane combustion
Gas enters spraying combustion gas purifying filtering 10 inner bottom of control system by the discharge pipe 110 that fuel gas inlet 11 is connected, and
It is filtered being discharged into the filtering adsorption space 14 upwards by the discharge orifice 1100 of discharge pipe 110, propane combustion gas first is first
The water conservancy diversion filter layer 140 that first layer can be passed through, using the water conservancy diversion filter layer 140 to be in generally the design of reverse V-shaped adsorption plate, first by third
Most coarse granule paraffin M is adsorbed and is filtered removal in alkane combustion gas.
Although can be by most in propane combustion gas and most coarse granule paraffin M is first filtered by first layer water conservancy diversion filter layer 140
Fall, but actually still have the paraffin M of remaining relatively fine particle in propane combustion gas, therefore the propane combustion gas enters coarse net stainless steel steel in regular turn
Velvet filter layer 141 and fine-structure mesh stainless steel steel wool filter layer 142, relatively fine particle paraffin M in propane combustion gas was carried out again
Elimination removes.
By the water conservancy diversion filter layer 140 of first layer, coarse net stainless steel steel wool filter layer 141 and fine-structure mesh stainless steel steel wool
It is very small to be left paraffin M particles after filter layer 142 filters, in propane combustion gas, but the spraying combustion gas of the present invention purifies filtering
10 major technique of control system is the paraffin M that filter completely in propane combustion gas, therefore last recycling adsorption cotton filter layer 143
More careful subtle hole design, removal is filtered by all paraffin M in propane combustion gas completely.
Accordingly, the only surplus ethyl mercaptans after being removed through the filtering filtering of adsorption space 14 of the paraffin M in propane combustion gas, and ethyl mercaptan
It is then opened into the gasification space 15 such as heating and gasifying, and a heating layer 150, an insulating layer is sequentially set in the gasification space 15
151 1 gasification layers 152 keep temperature again first with the heating layer 150 by after ethyl mercaptan heating and gasifying through the insulating layer 151
Into the gasification layer 152.
Last ethyl mercaptan and propane combustion gas are according to the different characteristic of proportion, and ethyl mercaptan is discharged by discharge port 13, and purified mistake
The propane combustion gas for filtering the best matter of gained is then exported by gas outlet 12.
It accordingly, really can be effectively by smellyization in propane combustion gas through spraying combustion gas purifying filtering control system 10 of the invention
It agent (containing ethyl mercaptan and paraffin M) Economical Purification and filters out, solving will not be because propane combustion gas still contain smellyization when spray processing procedure
Agent (containing ethyl mercaptan and paraffin M) and sticky pollute coating to the servo motor flowmeter 21 of combustion gas spraying equipment 20 and influence spray
Apply combustion gas control problem.
The present invention purifies filtering control system 10 via above-mentioned spraying combustion gas and the anti-liquefaction of spraying combustion gas constant temperature and pressure controls
System 40 by (containing the ethyl mercaptan and paraffin) Economical Purification of smelly agent in propane combustion gas and filtering, and controls propane combustion gas entire
Liquid will not be become again because of gaseous state in spraying processing procedure transmittance process, therefore can solve the servo motor in combustion gas spraying equipment 20 really
Flowmeter 21 results in blockage because of adhesion to smelly agent (containing ethyl mercaptan and paraffin), hinders to spray gas circulation and can not measure etc. and asks
Topic.
The present invention is the wear-resisting coating K1 on the further surfaces promotion object alloy K high-densit, high rigidity, height extend binding force
Effect, the combustion gas spraying equipment 20 connect the lengthening flaring type high flow rate nozzle system 30, please refer to shown in Fig. 6, are the present invention
Flaring type high flow rate spray nozzle system schematic cross-sectional view is lengthened, which is by one
Extended type arrival end 31 connects a flaring type high flow rate nozzle exit end 32 and is composed, and wherein the extended type arrival end 31 is packet
It includes a lengthening part 33 and an oxygen intake 310, a powdering inlet 311, a propane fuel gas inlet 312 and a pressure-air enters
Mouth 313.
After the propane combustion gas controls output quantity via the servo motor flowmeter 21 in the combustion gas spraying equipment 20, then via
Propane fuel gas inlet 312 enter the lengthening flaring type high flow rate spray nozzle system 30 in, while the oxygen, tungsten-carbide powder and
Pressure-air also enters lengthening flaring type height by oxygen intake 310, powdering inlet 311 and high-pressure air inlet 313 respectively
In flow velocity spray nozzle system 30, because propane combustion gas belongs to fuel gas, oxygen belongs to combustion-supporting gas, then imposes appropriate burning point and make
Gas generates combustion phenomena and forms a flames F exiting (belonging to known technology herein, repeat no more).
And it is to be that the extended type enters at the special designing of the lengthening flaring type high flow rate spray nozzle system 30 of the present invention
The extended lengthening part 33 in mouth end 31, can increase the length of the extended type arrival end 31, phase by the design of this lengthening part 33
The lengthening part 33 that more traditional nozzle 1 has no the present invention designs, and for the embodiment of the present invention, the extended type arrival end 31 length
Degree using between the sections 110-140mm as optimum value.
Another special designing is the flaring type high flow rate nozzle exit end 32, and the flaring type is shown by the sectional view of Fig. 6
The inside aperture A1 of high flow rate nozzle exit end 32 is to present to be gradually expanded to the mode of outlet C1 by entrance B1, is compared common
The inside aperture A of nozzle 1 is all that consistent design is completely different by entrance B to outlet C, and for the embodiment of the present invention, it should
The open end angle of flaring type high flow rate nozzle exit end 32 using between 1.0-3.0 degree section as optimum value.
Accordingly, it is to combine extended type arrival end 31 and flaring type that the present invention, which lengthens flaring type high flow rate spray nozzle system 30,
The design of high flow rate nozzle exit end 32, while via experiment test DOE of the present invention (Design Of Experiment), adjustment
To optimal parameter, level, blending thermal energy and kinetic energy (reaction time, reaction temperature, gas flame speed), reach really
To following advantages.
Propane gas flow rate and flow (160- can be promoted via the lengthening flaring type high flow rate spray nozzle system 30
210SCFH) and powder feeding pressure (80-110PSI) is improved, increases the burning gases length of flame and width of spraying combustion gas, and by carbon
Change tungsten powder and be totally absorbed in flame internal flame center, reaches complete syncretizing effect so that tungsten-carbide powder can completely be sprayed at this
The surfaces superalloy K, and high performance wear-resisting coating K1 is formed, it is that the present invention lengthens flaring type height stream shown in Fig. 7
Fast spray nozzle system experimentation test data reference chart.
Accordingly, method of the present invention with propane when combustion gas for the superalloy surface spraying wear-resisting coating, major technique hand
Section is added in conjunction with (1) spraying combustion gas purifying filtering control system, (2) spraying combustion gas constant temperature and pressure liquid-proof networked control systems, (3)
Long three kinds of systems of flaring type high flow rate spray nozzle system, and ordinary skill missing is solved really, and then reach following effect.
1st point, through present invention spraying combustion gas purifying filtering control system 10, can reach effectively will be in propane combustion gas really
Smelly agent (containing ethyl mercaptan and paraffin) Economical Purification and effect is filtered out, and then solved when spraying processing procedure because propane combustion gas still contains
There is a smelly agent (containing ethyl mercaptan and paraffin) and the sticky servo motor flowmeter 21 for arriving combustion gas spraying equipment 20, pollutes the wear-resistant painting
The problem of layer K1 and influence spraying combustion gas control, and promote process stability.
2nd point, can control really through present invention spraying combustion gas constant temperature and pressure liquid-proof networked control systems 40 propane combustion gas from
Spraying processing procedure starts all persistently to keep gaseous effect during to progress superalloy K surface sprayings, therefore effectively solves third
Alkane combustion gas causes the servo motor flow in combustion gas spraying equipment 20 because of the phenomenon that temperature difference or pressure difference become liquid again by gaseous state again
Meter 21 blocks, and hinders spraying gas circulation that can not measure, causes combustion gas spraying equipment 20 to work as machine problem, further promote high-performance
Wear-resisting coating K1 qualities.
3rd point, lengthen flaring type high flow rate spray nozzle system 30 through the present invention and can increase propane combustion gas really whole
Flow velocity in a spraying processing procedure and flow (160-210SCFH), and increase powder feeding pressure (80-110PSI), and improve spraying combustion
Tungsten-carbide powder is able to be totally absorbed in flame internal flame center, reaches and melt completely by the burning gases length of flame and width of gas
Effect is closed, so that tungsten-carbide powder can completely be sprayed at the surfaces superalloy K, forms high-performance compression strength and wear-resisting
Wear-resisting coating K1.
The wear-resisting coating K1 of the present invention obtains following data after people tests, and wear-resisting coating K1 reaches high-densit
(Porsity ＜ 1%), high rigidity (＞ 1,000HV), strong (＞ 10,000PSI) contour energy wear-resisting coating K1 characteristics of high bond are wanted
Ask, this data, which has been examined, meets GE F50TF71 code requirements (Required Limits), please refers to shown in Fig. 8, be the present invention with
Propane is wanted when combustion gas for the methods experiment data fit GE F50TF71 specifications of superalloy object K surface spraying wear-resisting coatings K1
Seek data reference figure.
In conclusion the various embodiments described above and schema are only presently preferred embodiments of the present invention, when cannot with restriction
Rights protection scope of the present invention should all belong to this hair according to equivalent changes and modifications made by rights protection scope of the present invention generally
It is bright cover in the range of.
Claims (10)
1. a kind of method being used for superalloy surface spraying wear-resisting coating when combustion gas with propane, it is characterised in that：Including：
A propane is provided as spraying combustion gas and a tungsten carbide as the powder on superalloy surface to be sprayed on, and propane is deposited
It is put at least one gas cylinder；
It is another that a superalloy is provided and does object pre-treatment program, and tungsten-carbide powder is subjected to baking program；
One spraying combustion gas constant temperature and pressure liquid-proof networked control systems are provided and are set to the gas cylinder, a gas receiver and combustion gas spraying
In equipment, and the gas cylinder, the gas receiver and the combustion gas spraying equipment are heated, propane gas heating is made to gasify to be formed
Gaseous state, the wherein gas cylinder, the gas receiver and the combustion gas spraying equipment are to be connected with each other, and gas receiver and combustion gas spraying equipment
Between connection one spraying combustion gas purifying filtering control system；
Wherein, spraying combustion gas purifying filtering control system receives the propane combustion gas transmitted from gas receiver, and by propane combustion gas
It interior smelly agent Economical Purification and filters out, to be transferred to again in the combustion gas spraying equipment after obtaining the propane combustion gas of best in quality；
One lengthening flaring type high flow rate spray nozzle system is provided and connects the combustion gas spraying equipment, lengthening flaring type high flow rate spray
It applies nozzle system and receives propane combustion gas and the tungsten-carbide powder from spraying combustion gas purifying filtering control system, and promote spraying
When flow, speed and powder feeding pressure, make tungsten-carbide powder that can concentrate on flame internal flame center and reach complete melting, and then spray
A wear-resisting coating is formed in superalloy surface.
2. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The object pre-treatment program including the use of the third bronze medal first to superalloy surface cleaning, recycle high temperature gummed tape to superalloy into
Row is screened, and finally carries out sandblasting to superalloy surface using aluminum oxide sand.
3. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The baking program temperature of the tungsten-carbide powder is 50-80 degrees Celsius, baking time is 5-10 hour.
4. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The spraying combustion gas constant temperature and pressure liquid-proof networked control systems include：Liquid-proof device, thermostat, the thermometric of at least more than one
Device and constant-voltage equipment, and be disposed on gas cylinder, gas receiver and combustion gas spraying equipment and the spraying combustion gas purified
The constant-voltage equipment is separately connected between filter control system and spraying equipment, and the liquid-proof device is a heating electrical blanket, the temperature of the thermostat
Degree is 50-80 degrees Celsius, and the pressure of the constant-voltage equipment is 90-120PSI.
5. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The spraying combustion gas constant temperature and pressure liquid-proof networked control systems are additionally provided with the thermal detector of at least more than one, and are arranged in combustion gas
On steel cylinder, gas receiver and combustion gas spraying equipment, with monitoring temperature at any time.
6. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The spraying combustion gas purifying filtering control system is provided with a fuel gas inlet, a gas outlet, a discharge port, a filtering suction
Attached space and a gasification space, the wherein fuel gas inlet are one gas emission pipelines of connection and are set to the filtering adsorption space most
Bottom excludes the filtering completely of paraffin in stink agent with absorption by filtering adsorption space, and by gasification space by stink
Ethyl mercaptan gasifies in agent, and with propane according to combustion gas proportion different characteristics, ethyl mercaptan is discharged last ethyl mercaptan by discharge port, and is purified
Propane combustion gas after filter is discharged by gas outlet.
7. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as described in claim 1 with propane, feature exist
In：The lengthening flaring type high flow rate spray nozzle system is to connect a flaring type high flow rate nozzle by an extended type arrival end to go out
Mouthful end is composed, wherein the extended type arrival end be include a lengthening part, the inside of the flaring type high flow rate nozzle exit end
Aperture is to design to be gradually expanded to the mode of outlet by entrance.
8. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as claimed in claim 6 with propane, feature exist
In：The filtering adsorption space of the spraying combustion gas purifying filtering control system is by a water conservancy diversion filter layer, a coarse net stainless steel steel
Velvet filter layer, a fine-structure mesh stainless steel steel wool filter layer and an adsorption cotton filter layer are constituted from bottom to top, wherein the water conservancy diversion mistake
Filtering layer can be in generally reverse V-shaped adsorption plate, the coarse net stainless steel steel wool and the fine-structure mesh stainless steel steel wool can be it is at least one layer of with
On, and the steel wire diameter of the coarse net stainless steel steel wool filter layer is 1mm, the steel wire of the fine-structure mesh stainless steel steel wool filter layer is straight
Diameter is 0.25mm and gasification space is made of a heating layer, an insulating layer and a gasification layer.
9. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as claimed in claim 7 with propane, feature exist
In：The length of the extended type arrival end is 110-140mm, and the opening angle of the flaring type high flow rate jet expansion is 1.0-
3.0 degree.
10. the method for being used for superalloy surface spraying wear-resisting coating when combustion gas as claimed in claim 7 with propane, feature exist
In：The extended type arrival end includes an oxygen intake, a powdering inlet, a propane fuel gas inlet and a high-pressure air inlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510152959.1A CN106148875B (en) | 2015-04-02 | 2015-04-02 | The method for being used for superalloy surface spraying wear-resisting coating when combustion gas with propane |
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|---|---|---|---|
| CN201510152959.1A CN106148875B (en) | 2015-04-02 | 2015-04-02 | The method for being used for superalloy surface spraying wear-resisting coating when combustion gas with propane |
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| CN106148875B true CN106148875B (en) | 2018-09-11 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110573A (en) * | 2013-04-18 | 2014-10-22 | 气体科技能源概念公司 | Fuel module used for spray gun, fuel cell device, thermal spraying device, thermal deburring device and fullerene manufacturing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5951860B2 (en) * | 1982-08-09 | 1984-12-17 | 和也 廣瀬 | Spraying method |
| US9730306B2 (en) * | 2013-01-31 | 2017-08-08 | Oerlikon Metco (Us) Inc. | Optimized thermal nozzle and method of using same |
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2015
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110573A (en) * | 2013-04-18 | 2014-10-22 | 气体科技能源概念公司 | Fuel module used for spray gun, fuel cell device, thermal spraying device, thermal deburring device and fullerene manufacturing device |
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| CN106148875A (en) | 2016-11-23 |
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