SU1211335A1 - Device for deposition of metal coating on shaped rigid articles - Google Patents

Description

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The invention relates to the field of applying hot protective coatings, in particular, to devices for agonizing hard shaped articles, such as gons.

The purpose of the invention is to simplify the device and improve the quality of the coating.

The drawing shows schematically the proposed device, about - 1CH, section. .

The device comprises a metal melting bath 1 with windows 2 and 3 for the threading of the products being processed. Window

2dl of the product entry is offset from the output window 3 and placed above the metal level in the 1 K bath window

3 outputs of the product docked capacitance 4, placed in the zone of action of the inductor 5 running magnetic field, made in the form of packages of a magnetic conductor with a three-phase current winding. Capacity 4 together with the inductor 5 forms a magnetic hydrodynamic stopper (MHD-stopper). Bath 1 and capacity 4 are lined with refractory material. At the outlet of the MHD stopper, in the lower part of the tank 4, a vertical partition is placed - the threshold 6, which prevents the metal from leaking out at the moment of launching the device. In the MHD stopper, the nonmagnetic gap to the exit of the product 7, for example, a square, is reduced, which provides an increase in

/ ponderomotive force acting on the molten metal 8 as the product moves in the tank of the MHD-stopper, and leads to a decrease in the metal in it

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bones, excluding metal emissions from the bath 1. Window 2 has a high-frequency inductor 9 for preheating the workpiece 7. The molten metal 8 in the bath 1 is covered with a layer of flux 10.

The device works as follows.

When power is applied to the inductor 5

create a running magnetic field. The bath 1 is filled with the molten metal 8. Under the action of a traveling magnetic field, the molten metal from the tank 4 is forced into the melting bath 1. The workpiece 7 is pre-heated in the high-frequency inductor 9 through the window 2 of the broach. Since the product entry window 2 is located above the level of the metal melt B, in the melting bath 1 the product 7 is introduced into the metal melt 8 directly through the flux 10. surface product 7, passage through the bath 1 "

metallized. The MHD stopper at the exit of the bath 1 prevents the melt of metal 8 from leaking out during the passage of the product 7.

Due to the displacement of windows 2 and 3, it is possible to eliminate one of the MHD stoppers previously required at the entrance to bath 1, which simplifies the design, eliminating the mixing of the material 8 melt at the inlet of va 1) well 1, and due to the introduction of product 7 through the flux 10 in a protective atmosphere provides improved quality coating.

Claims (1)

DEVICE FOR METALIZATION OF RIGID PROFILED PRODUCTS, including a melting bath with windows for drawing the product through the metal and a magnetohydrodynamic stopper located at the product output window from the bath, characterized in that, in order to simplify the device and improve the quality of the coating, the product input window is shifted vertically relative to output window and placed above the level of the molten metal in the melting bath. 121