Process for the production of a coating on the surface of...

Details Process for the production of a coating on the surface of... Process for the production of a coating on the surface of...

C - Chemistry, Metallurgy

23

C

C23C 4/12 (2006.01) B29C 45/60 (2006.01) B29C 47/60 (2006.01)

Patent

CA 2206702

A process is disclosed for producing a coating on the surface of plastifier screws for injection-moulding machines. A metallic, hard-metallic or ceramic substance with a low distortion is applied to a steel screw base element by high-speed flame spraying. During this coating process, a spray jet treats the different surface regions of the screw base element (1) namely, rib top (3), flanks (4) and screw base (5), partially independently.

L'invention a pour objet un procédé de production d'un revêtement à la surface de vis de plastification pour presses d'injection. Sur la vis constituée par un matériau de base en acier, on applique un matériau métallique, métallique dur ou céramique, à faible distorsion, par projection à la flamme à grande vitesse. Lors du processus de revêtement, un jet frappe les différentes zones de la surface du matériau de base de la vis (1), partiellement indépendamment les unes des autres, à savoir, la partie supérieure (3) et les flancs (4) des nervures, ainsi que la base (5) de la vis.

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