CN209854231U - Low-temperature plasma spraying coating gun - Google Patents
Low-temperature plasma spraying coating gun Download PDFInfo
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- CN209854231U CN209854231U CN201920182862.9U CN201920182862U CN209854231U CN 209854231 U CN209854231 U CN 209854231U CN 201920182862 U CN201920182862 U CN 201920182862U CN 209854231 U CN209854231 U CN 209854231U
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Abstract
The utility model discloses a low temperature plasma spraying coating gun, it includes the casing, is located at least two sets of powder gas components, power coupling assembling and installation fixed subassembly that send in the casing, send powder gas components to include the trachea, cup joint the coupling assembling on the trachea, the current-conducting nozzle, the conductive screwed pipe, the trachea is connected with the conductive screwed pipe, the current-conducting nozzle is connected with conductive screwed pipe screw thread, power coupling assembling includes first cable conductor, second cable conductor, first cable conductor and first set send powder gas components to be connected, the second cable conductor is connected with second set send powder gas components; the installation fixing assembly comprises a spray gun seat, a spray gun tube, a light shield and an air shield, the spray gun tube is in threaded connection with the spray gun seat, and the light shield is in threaded connection with the air shield. The utility model discloses can realize that plasma spraying coating film reaches the steady job operation of certain degree centigrade, also can realize plasma spraying coating film under indoor normal atmospheric temperature to can also realize multiple medium and gaseous mixed selective use, stability is strong, the commonality is high.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of plasma spraying technique and specifically relates to a low temperature plasma spraying coating gun is related to.
[ background of the invention ]
The plasma spraying technique is a method of forming a firmly adhered surface layer by heating and melting or semi-melting a powder material such as ceramics, alloys, metals, etc. using a rigid non-transferred plasma arc as a heat source and spraying the powder material onto the surface of a pretreated workpiece at a high speed. In the conventional plasma spraying method, working gas is ionized into plasma in an electric arc formed by an anode and a cathode, so that powder conveyed by a powder opening is melted or semi-melted and is sprayed to the surface of a substrate along with plasma flow to form a coating.
Therefore, the plasma spraying process needs reasonable electric arc power and powder feeding amount, and parameters such as plasma gas, spraying distance, angle, workpiece relative speed and the like are crucial to improving the coating quality. The method comprises the following steps of (1) electric power and powder feeding amount, wherein the electric power is the most important process parameter of plasma spraying, and is required to be adjusted and changed frequently in the spraying process, otherwise, the power is too high, so that the spraying temperature is too high, powder is directly gasified, pores and powder sputtering are caused in a coating, the surface quality is influenced, the hardness is reduced, gaps are too large, even cracking and burning loss of a spray gun occur; when the power is too low, the flame temperature is insufficient, the powder is not fully melted, the adhesive force of liquid drops is too low, the bonding strength of the coating is reduced, and the spraying efficiency is reduced. The method must be adapted to the change of the types of the sprayed powder, the powder feeding amount and other factors, the excessive powder supply is insufficient, otherwise, the insufficient powder supply seriously affects the coating quality, the overheating deformation and the damage of the matrix and the like. The spraying distance influences the melting degree, flight time, speed and temperature of the powder, the influence on the coating is very large, when the distance is too large, the flight time of the powder is increased, the spraying efficiency is reduced, the speed and temperature of the powder are reduced, the pressure is too small when liquid drops are accumulated, the flowability is reduced, and the binding force and the density of the coating are reduced; conversely, short flight times, high speeds, resulting in inadequate heating, high impact forces to the substrate, low bond strengths, and possible damage to the substrate. The spray distance should be selected to be as small as possible without affecting the coating quality and the substrate, providing efficiency. The angle influences the deposition efficiency and the coating structure of the powder, the closer to vertical spraying generally, the better the spraying effect is, if the spraying angle is smaller, the coating structure is deteriorated, a cavity appears, the porosity is too large, and the coating hardness and the bonding strength are lower.
Therefore, the principle, process and control factors of the integrated plasma determine the problems and defects of the conventional plasma:
1. the traditional plasma spraying temperature is too high, and is between thousands of degrees centigrade and tens of thousands of degrees centigrade.
2. The traditional plasma spraying equipment has single application performance and is basically sprayed by a single medium.
3. The spraying base material has special requirements, and a high-temperature resistant substance is required to be used as the base material.
4. The plasma spraying equipment has a complex structure, and the generated plasma has poor stability and poor universality.
5. The production and application are not intelligent enough; the difficulty of the operation technology is high; the requirement on technical skill is high.
6. Atmospheric plasma spraying: spraying is carried out in the atmospheric environment, and the workpiece needs to be preheated to reduce the temperature of the substrate and the coating so as to improve the bonding strength and the like.
7. The traditional equipment security is low.
[ Utility model ] content
In order to overcome the defects of the prior art, the utility model aims to provide a low temperature plasma spraying coating gun, this spraying coating gun can realize that the plasma spraying coating film reaches the steady operation of certain degree centigrade, also can realize the plasma spraying coating film under indoor normal atmospheric temperature to can also realize the mixed alternative use of multiple medium and gas, stability is strong, the commonality is high.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a low-temperature plasma spraying coating gun comprises a shell, at least two groups of powder feeding components, a power supply connecting component and a mounting and fixing component, wherein the at least two groups of powder feeding components are positioned in the shell; the power supply connecting assembly comprises a first cable and a second cable, the first cable is connected with the first group of powder feeding air assemblies, and the second cable is connected with the second group of powder feeding air assemblies; the installation fixing assembly comprises a spray gun seat, a spray gun tube, a light shield and an air shield, the spray gun tube is in threaded connection with the spray gun seat, and the light shield is in threaded connection with the air shield.
The further scheme is that the first cable is connected with the conductive screwed pipe of the first group of powder feeding air components, and the second cable is connected with the conductive screwed pipe of the second group of powder feeding air components.
Still further, a power connector is arranged on one side of the outer surface of the shell.
In a further aspect, the power connector is an aircraft cable.
A further scheme is that an adapter is further arranged in the shell, and the air pipe is connected with the conductive solenoid through the adapter.
In a further aspect, the connection assembly is a straight-through threaded connection.
In a further scheme, the first cable is a positive cable, and the second cable is a negative cable.
The spray gun seat, the spray gun tube, the air hood and the light shield are made of precise ceramic materials.
The further proposal is that the shell and the spray gun seat are fixedly connected through a machine meter screw.
The utility model discloses mainly have following beneficial effect:
by adopting the technical scheme, the plasma spraying coating can be carried out at normal temperature; multiple plasma media are selectable and can be switched randomly according to requirements; the product base material is not selected, the operation can be carried out at normal temperature, and the surface modification of the base material does not influence the property of the substance body; the equipment has good stability and high universality; the intelligent programmed control can reduce the technical difficulty of production personnel, the application difficulty is low, and the safety is greatly improved.
[ description of the drawings ]
FIG. 1 is a schematic structural view of an embodiment of a low-temperature plasma spraying coating gun of the present invention.
Fig. 2 is an exploded perspective view of an embodiment of the low-temperature plasma spraying coating gun of the present invention.
Fig. 3 is a front view of an embodiment of the low-temperature plasma spraying coating gun of the present invention.
Fig. 4 is a left side view of an embodiment of the low-temperature plasma spraying coating gun of the present invention.
Fig. 5 is a top view of an embodiment of the low-temperature plasma spraying coating gun of the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
Referring to fig. 1 to 5, the utility model discloses a low temperature plasma spraying coating gun includes casing 12, is located two sets of powder gas components, power coupling assembling and the fixed subassembly of installation that send of casing 12, send the powder gas components to include trachea 3, cup joint coupling assembling, conductive nozzle 14, conductive solenoid 5 on trachea 3, trachea 3 is connected with conductive solenoid 5, conductive nozzle 14 and conductive solenoid 5 threaded connection. Wherein, the contact tip 14 in this embodiment is an ionization generator, and the gas tube 3 is a copper tube; an adapter 4 is further arranged in the shell 12, and the air pipe 3 is connected with the conductive solenoid 5 through the adapter 4.
Preferably, the connecting component is a through screw joint 2, the through screw joint 2 is used for connecting the air pipe 3 and is provided with an opening, namely a powder air inlet 16, above the through screw joint.
Specifically, the powder feeding assembly adopts a four-channel design and is divided into two groups, wherein one group is connected with a positive power supply, and the other group is connected with a negative power supply. The single channel is composed of a conductive nozzle 14, an adapter 4, an air pipe 3 and a straight-through threaded joint 2, all the channels share a powder-air shared channel mode, and a powder feeder and a gas source are used for feeding media and gas in a double-pipe combined mode. Therefore, the four-channel design is a double-multiplying-power design of the traditional design, and can realize the simultaneous implementation of multiple mediums or control the entry of different mediums on the structure, and also can realize the simultaneous implementation of multiple gases or control different gases as main gas and auxiliary gas; the program is set up and controlled, and the intelligent distribution is realized, so that the treatment of different surface requirements of different substrates is greatly facilitated.
In the embodiment, the two groups of powder feeding gas components have the same structure, have the functions of adding the spraying material and generating plasma, and can realize the mixing and selective use of multiple media and gases because the two groups of powder feeding gas components are independent from each other. Of course, the design of the channels of the powder feeding assembly is not limited to two groups, and the specific number can be designed according to the requirement of a user.
The power supply connecting assembly comprises a first cable 10 and a second cable 11, wherein the first cable 10 is connected with the first group of powder feeding air assemblies, and the second cable 11 is connected with the second group of powder feeding air assemblies. Specifically, a first cable 10 is connected with the conductive solenoid 5 of the first set of powder feeding components, and a second cable 11 is connected with the conductive solenoid 5 of the second set of powder feeding components. The first cable 10 is a positive cable, and the second cable 11 is a negative cable.
In the present embodiment, a power connector 15 is provided on one side of the outer surface of the housing 12. The power connector 15 is an aviation cable, and can be externally connected with a direct-current high-frequency power supply through the aviation cable to continuously and stably supply high-frequency current required by ionization of the contact tip 14, the power supply is low-voltage high-current, the current value is 300 amperes to 500 amperes, the voltage value is 12 volts to 20 volts, the outlet temperature of the spray gun is high, and the high temperature can be reached, such as 15000 ℃.
In this embodiment, the mounting and fixing assembly includes a gun seat 6, a gun tube 7, a light shield 9, and an air shield 8, wherein the gun tube 7 is screwed to the gun seat 6, and the light shield 9 is screwed to the air shield 8. Wherein, air shroud 8 plays the effect of water conservancy diversion, can dredge the circulation of air in the plasma processor, and lens hood 9 can effectively shelter from external light, has avoided the harmful effects that light brought. Preferably, the spray gun seat 6, the spray gun tube 7, the air hood 8 and the light shield 9 are all made of precise ceramic materials, so that the ionization reaction of the anode and the cathode improved by the connected high-frequency direct-current power supply can be ensured to be sufficient, short circuit is avoided, the contact tip 14 is fixed through a fixing screw, the distance between four channels and the optimal position of an electric arc can be adjusted, the distance between the closest points of adjacent channels is controlled to be within 3mm +/-0.05 mm, and the data is a data value obtained by application.
Preferably, the shell 12 is fixedly connected with the spray gun seat 6 through a machine meter screw 1.
In this embodiment, the outer surface of the casing 12 is provided with a plurality of through holes corresponding to the outer contour of the through threaded joint 2, two sets of powder feeding assemblies are both located in the casing 12 and run through the through holes through the outer end of the through threaded joint 2, the powder inlet 16 is exposed out of the surface of the casing 12, a user can directly add materials from the powder inlet 16, the device does not need to be uncapped to add materials, and the influence of uncapping on the inside of the device is avoided.
Preferably, the low-temperature plasma spraying coating gun further comprises a fixing plate 13, the fixing plate 13 is fixedly connected with the shell 12, and a hanging position is arranged on the surface of the fixing plate 13 and can be fixedly connected with other equipment through the hanging position.
The utility model discloses a but the direct application is in PCB circuit board production, the surface treatment trade of plasma spraying circuit trade, industrial product skin to can be applied to the spraying production volume production of chemical synthesis, material surface modification and large-scale integrated circuit, have advantages such as low cost, environmental protection pollution-free, high efficiency.
Therefore, the utility model discloses can realize that plasma spraying coating film reaches the steady job operation of 60 degrees centigrade, also can realize plasma spraying coating film under indoor normal atmospheric temperature to can also realize the mixed alternative use of multiple medium and gas, stability is strong, the commonality is high. Moreover, the surface treatment and the surface modification of all normal-temperature solid substances are realized under the combined action of intelligent control; the wear resistance, corrosion resistance, high temperature resistance, electric insulation, heat insulation, radiation protection and other properties of the normal temperature solid substance are improved.
Therefore, the low-temperature plasma spraying coating gun can carry out plasma spraying coating under the normal temperature condition; multiple plasma media are selectable and can be switched randomly according to requirements; the product base material is not selected, the operation can be carried out at normal temperature, and the surface modification of the base material does not influence the property of the substance body; the equipment has good stability and high universality; the intelligent programmed control can reduce the technical difficulty of production personnel, the application difficulty is low, and the safety is greatly improved.
It should be noted that the above is only the preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and all the insubstantial modifications made by using the design concept of the present invention also fall within the protection scope of the present invention.
Claims (9)
1. A low temperature plasma spraying coating gun, its characterized in that includes:
the powder feeding assembly comprises an air pipe, a connecting assembly sleeved on the air pipe, a conductive nozzle and a conductive solenoid, the air pipe is connected with the conductive solenoid, and the conductive nozzle is in threaded connection with the conductive solenoid;
the power supply connecting assembly comprises a first cable and a second cable, the first cable is connected with the first group of powder feeding air assemblies, and the second cable is connected with the second group of powder feeding air assemblies;
the mounting and fixing assembly comprises a spray gun seat, a spray gun tube, a light shield and an air shield, the spray gun tube is in threaded connection with the spray gun seat, and the light shield is in threaded connection with the air shield.
2. The low-temperature plasma spray coating gun according to claim 1, wherein:
the first cable is connected with the conductive screwed pipe of the first group of powder feeding air assembly, and the second cable is connected with the conductive screwed pipe of the second group of powder feeding air assembly.
3. The low-temperature plasma spray coating gun according to claim 1, wherein:
and one side of the outer surface of the shell is provided with a power connector.
4. The low-temperature plasma spray coating gun according to claim 3, wherein:
the power connector is an aviation cable.
5. The low-temperature plasma spray coating gun according to any one of claims 1 to 4, wherein:
still be equipped with the adapter in the casing, the trachea with electrically conductive screwed pipe passes through the adapter is connected.
6. The low-temperature plasma spray coating gun according to any one of claims 1 to 4, wherein:
the connecting component is a straight-through threaded joint.
7. The low-temperature plasma spray coating gun according to any one of claims 1 to 4, wherein:
the first cable is a positive cable, and the second cable is a negative cable.
8. The low-temperature plasma spray coating gun according to any one of claims 1 to 4, wherein:
the spray gun seat, the spray gun tube, the air hood and the light shield are all made of precise ceramic materials.
9. The low-temperature plasma spray coating gun according to any one of claims 1 to 4, wherein:
the shell is fixedly connected with the spray gun base through a machine-meter screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182862.9U CN209854231U (en) | 2019-02-01 | 2019-02-01 | Low-temperature plasma spraying coating gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920182862.9U CN209854231U (en) | 2019-02-01 | 2019-02-01 | Low-temperature plasma spraying coating gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209854231U true CN209854231U (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920182862.9U Active CN209854231U (en) | 2019-02-01 | 2019-02-01 | Low-temperature plasma spraying coating gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209854231U (en) |
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2019
- 2019-02-01 CN CN201920182862.9U patent/CN209854231U/en active Active
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Effective date of registration: 20220614 Granted publication date: 20191227 |