The method of applying a powder of composite alloys

 

(57) Abstract:

The invention can be used in the manufacture and repair of parts subject to frictional wear. The method of applying a powder of composite alloys includes heating the powder by high frequency currents, feeding it to the surface of the product transporting gas is air and the cladding deposited powder by high frequency currents. 1 Il.

The invention relates to a method of applying the powder composition of the alloys and can be used in the manufacture and repair of moving parts.

The known method of gas-plasma deposition of powder coating materials with melting by high frequency currents [1]

The disadvantages of this method are the increased energy consumption, powder materials, low productivity of the process and the complexity of the automation, as well as a high degree of cracking due to internal stresses arising.

Known method of applying a powder of composite alloys, including warm-up and the supply of powder on the surface of the product transport medium containing the air [2]

The disadvantage of this method is the low adhesion St is etenia is to reduce the cost of the process, the reduction of thermal effects on hardening item with a simultaneous increase in the adhesion, strength and antisnore properties.

Another objective is carried out by applying a powder of composite alloys, including warm-up and the supply of powder on the surface of the product by air, characterized in that the heating of the powder produced in the field of high-frequency currents, and after the filing of the powder on the surface of the product is carried out welding by high frequency currents.

The invention is illustrated in the drawing.

The proposed method of applying a powder of composite alloys provides high adhesive properties, high wear resistance and strength of the applied coating due to the high hardness of the melted areas, toughness and ductility of the base material.

For the implementation of the method requires a small amount of carbide powder materials and energy due to the minimal heat loss. The positive features of the method include: use as a carrier powder materials of atmospheric air, low noise process, high automation process, etc.

Example. induction metallization.

Roller water pump (1), made of steel 45 (0.45% of carbon), is installed in the rotating device, for example, cartridge screw-cutting lathe (2), combined with the installation of HDTV type VCG-60/044 (not shown in the figure). On the processed surface of the deposited heated by high frequency currents by means of special inductor (3) of powder material (4), for example, carbon doped alloy GHG-On 27 (3,9%C, 26%Cr, 1.5% of Si, 1.7%of Ni, 0.3%of W, 1.1%of Mn, and the rest Fe) supplied from a dispenser (5) in the zone of treatment of the air stream (6) from the injection device (not shown in the figure), with subsequent reflow the deposited layer with the main material of the workpiece. The melting temperature is equal to 1280-1320 degrees C. High strength and wear resistance of the hardened surface caused by the microstructure and hardness of fused areas (55-60 HRC).

Sources of information

1. Potapov, K. Mamleev H M Flame surfacing plating reflow HDTV. J. engineering in S.-H. N 12. 1978.

Auth. St. USSR N 1759559. A method of obtaining a wear resistant composite coating.

The method of applying a powder of composite alloys, involving heating of the powder and applying it to a surface the filing of powder on the surface of the product carry out his welding by high frequency currents.

 

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