Process for coating the surface of elongated materials

Details Process for coating the surface of elongated materials Process for coating the surface of elongated materials

C - Chemistry, Metallurgy

23

C

C23C 2/40 (2006.01) C23C 2/00 (2006.01) C23C 2/38 (2006.01)

Patent

CA 2131912

In a process for coating the surface of elongated materials, the materials go through a container for the molten coating ma- terial without reversing their direction. The container has a through channel surrounded by an electric field in which an electrom- agnetic force is generated and the dwelling time of the strip in the melt can be controlled independently from the strip advance speed. In order to improve the conventional strip coating process, so that favourable intermediate layers that ensure a good ad- herence and a good plasticity of the coating can be achieved, the molten coating material is continuously moved against the sur- face of the elgongated material and is circulated in an atmosphere free from atmospheric oxygen while the hank-shaped goods go through the container. A device used therefor is characterized in that a pre- melting container (12) is associated to the coating con- tainer for the molten coating material (2), and the melt (2) can circulate between the pre-melting container (12) and the coat- ing container (1) in an atmosphere free from atmospheric oxygen.

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