Apparatus for gasodynamic deposition of powder materials

FIELD: portable apparatuses for applying coatings of powder materials by gasodynamic deposition.

SUBSTANCE: apparatus includes compressed gas source, powder meter, deposition unit in the form of portable manual tool with remote control having supersonic nozzle and gas heater rigidly connected with it. Gas heater includes metallic body inside which electric and heat insulation having through mutually parallel pneumatic ducts with inserted in them heating members. Apparatus also includes pneumatic duct for feeding powder from powder meter to supersonic nozzle, locking devices and unit for controlling deposition process, said units are mutually connected through flexible pneumatic ducts and electric connection wires. According to invention electric and heat insulation of gas heater includes inner and outer cylinders coaxially arranged one inside other. Inner cylinder has central through passage for placing pneumatic duct for feeding powder from meter to supersonic nozzle. Pneumatic ducts along its periphery are in the form of grooves. Inner and outer cylinders of electric heat insulation of gas heater are made of heat resistant material having electric and heat insulated coating on surfaces restricting pneumatic ducts.

EFFECT: enlarged manufacturing possibilities, simplified design, lowered mass, improved capability for repairing works, enhanced operational efficiency.

2 cl, 3 dwg

 

The invention relates to a device applying a coating of powder materials gas-dynamic spraying portable type and may find application in mechanical engineering, power engineering, metallurgy and other industries to obtain single and multilayer coatings for various applications.

A device for spray containing a source of compressed gas dispenser powder, supersonic allow the node, the working gas heater, and control system of the speed of the powder particles, including shut-off and regulating bodies. [1].

The disadvantage of this design is the limited technology and functionality, namely, that the heating element is made in the form of long conductive tube, the inner part of which is there is a working gas, which causes an increase in the size and weight of the heater as a whole and complicates its use as a portable tool.

It is also known a device for gas-dynamic spraying of powder materials portable type [2]. This device is made in the form of a spraying unit and a control unit connected by a flexible pneumoelectropositioner. The spraying unit is designed as a portable hand tool with remote control and with the costs of the supersonic nozzle and rigidly associated gas heater.

The disadvantage of this design is that the axis of the supersonic nozzle is not aligned with the heater gas, and the supply of powder from the dispenser to the supersonic nozzle is made with a flexible pneumotropica; elektroteploventilyatory heater gas supplied through primocanale, difficult to contain heating elements. Making elektroteploventilyatory through parallel primocanale has technological difficulties, and misalignment supersonic nozzle with heater gas reduces the efficiency of the installation.

The task of the technical solution is the expansion of technological capabilities, simplifying the design and reducing its weight, increase maintainability, and efficiency of the device of the gas-dynamic spraying of powder materials portable type.

This object is achieved due to the fact that the device of the gas-dynamic spraying a powder material containing a source of compressed gas, a powder dispenser, a spraying unit, designed as a portable hand tool with remote control and consisting of a supersonic nozzle and rigidly associated with gas heater, made in the form of the metallic casing is placed inside electrodeposition with end-to-end computers is Linyi primocanale and the built-in heating elements, and air tube feeding powder from the dispenser to the supersonic nozzle, valves and control unit and control spraying, interconnected flexible pneumoelectropositioner. The gas heater is installed coaxially supersonic nozzle, elektroteploventilyatory heater gas made of inner and outer coaxially installed one in another cylinder, the inner cylinder is made through Central channel for the passage of pneumotropica supply of powder from the dispenser to the supersonic nozzle, and primocanale made on its periphery in the form of grooves, while the inner and outer cylinders elektroteploventilyatory heater gas made from heat-resistant material with electrodeposition coating on the surfaces bounding primocanale.

Electrodeposition coating on the surfaces bounding primocanale made by microarc oxidation.

The Central through channel for the passage of pneumotropica from the powder dispenser to a supersonic nozzle, made in the inner cylinder elektroteploventilyatory, allows you to set the supersonic nozzle coaxially with the gas heater that ensures alignment directions of streams of heated gas and gas-powder mixture, and it improves technical characteristics of the installation and increases the t of the effectiveness of its work.

The proposed construction of elektroteploventilyatory heater gas improves the manufacturability of manufacture and Assembly, and also creates the possibility of making it from heat-resistant materials with electrodeposition coating surfaces bounding primocanale. For example, from non-ferrous alloys (aluminum or titanium) with a surface bounding primocanale, microarc oxidation. While the inner and outer cylinders elektroteploventilyatory can be performed in various combinations of these materials.

These characteristics have been identified in other technical solutions in the study of the level of the art, and therefore, the solution is new and involves an inventive step.

Figure 1 shows a block spraying with a gas heater device of the gas-dynamic spraying of powder materials.

Figure 2 shows the heater strip, where the inner cylinder is made of metal with electrodeposition coating, or from an alloy of non-ferrous metals processing surfaces bounding primocanale, microarc oxidation, and an external cylinder made of ceramic.

Figure 3 shows a gas heater, where the inner cylinder is made of metal with electrodeposition coating, and an outer cylinder made of an alloy of base metals is processed by microarc oxidation.

The device of the gas-dynamic spraying a powder material is made of blocks, interconnected by a flexible pneumoelectropositioner: block deposition, is shown in figure 1, the powder dispenser and a control unit and control.

The spraying unit is designed as a portable hand tool with a remote control. It consists of a gas heater 1, comprising a metal casing 2, elektroteploventilyatory 3, primocanale 4, the heating elements 5, a pipe for supplying the working gas 6, a sensor 7, 8 button remote control dispenser powder and supersonic nozzle 9, rigidly connected to the gas heater 1.

Elektroteploventilyatory 3 gas heater made of two cylinders: internal 10 primocanale in the form of grooves 11 on the outer surface and a Central through channel 12 and the outer cylinder 13. In the slots of the inner cylinder stacked heating elements 5, and through the Central through channel passes air tube 14 from the powder dispenser to corsocomo the nozzle 9.

Collapsible design elektroteploventilyatory made of two cylinders, simplifies the laying of the heating elements in primocanale and allows for its manufacture new and promising technological processes of obtaining electrodeposition coatings such as plasma spraying,microarc oxidation and other The design of elektroteploventilyatory allows you to perform it in various combination of materials depending on the technological capabilities and the required heating of the working gas.

The device of the gas-dynamic spraying of powder materials is as follows.

The device is connected to the compressed gas and power. On the control unit and the control set and install the necessary temperature and pressure of the working gas. The compressed gas is fed to the dispenser and spraying unit. The working gas passing through primocanale 4 heater comes in a supersonic nozzle 9. To the supersonic nozzle through the Central through channel 12 is fed from the dispenser gas-powder mixture. Gas-powder mixture together with the heated gas in the nozzle is accelerated to supersonic speed and is transferred to the workpiece.

The proposed design solution spraying unit provides the expansion of technological capabilities, simplified design and reduced weight, but also improves the maintainability of the device of the gas-dynamic spraying of powder materials portable type and increases the efficiency of its work.

Sources of information

1. RF patent №1674585, MKI 23 With 26/00, 1989.

2. RF patent №2190695, MKI 23 With 26/00, 20.04.2000, prototype.

1. The device gasodynamic the ski spraying of powder materials, contains a source of compressed gas, a powder dispenser, a spraying unit, designed as a portable hand tool with remote control and consisting of a supersonic nozzle and rigidly associated with gas heater, made in the form of the metallic casing is placed inside electrodeposition through parallel primocanale and the built-in heating elements and also air tube feeding powder from the dispenser to the supersonic nozzle, valves and control unit and control spraying, interconnected flexible pneumoelectropositioner, characterized in that the gas heater is installed coaxially supersonic nozzle, elektroteploventilyatory heater gas made of internal and external coaxially installed one in another cylinder, the inner cylinder is made through Central channel for the passage of pneumotropica supply of powder from the dispenser to the supersonic nozzle, and primocanale made on its periphery in the form of grooves, while the inner and outer cylinders elektroteploventilyatory heater gas made from heat-resistant material with electrodeposition coating on the surfaces bounding primocanale.

2. The device according to claim 1, characterized in that electrodeposition floor on which ernostar, limiting primocanale made by microarc oxidation.



 

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FIELD: portable apparatuses for applying coatings of powder materials by gasodynamic deposition.

SUBSTANCE: apparatus includes compressed gas source, powder meter, deposition unit in the form of portable manual tool with remote control having supersonic nozzle and gas heater rigidly connected with it. Gas heater includes metallic body inside which electric and heat insulation having through mutually parallel pneumatic ducts with inserted in them heating members. Apparatus also includes pneumatic duct for feeding powder from powder meter to supersonic nozzle, locking devices and unit for controlling deposition process, said units are mutually connected through flexible pneumatic ducts and electric connection wires. According to invention electric and heat insulation of gas heater includes inner and outer cylinders coaxially arranged one inside other. Inner cylinder has central through passage for placing pneumatic duct for feeding powder from meter to supersonic nozzle. Pneumatic ducts along its periphery are in the form of grooves. Inner and outer cylinders of electric heat insulation of gas heater are made of heat resistant material having electric and heat insulated coating on surfaces restricting pneumatic ducts.

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