FREMGANGSMAATE OG INNRETNING FOR PAAFOERING AV ET METALLOVERTREKK PAA GJENGEAVSNITTET TIL MED HVERANDRE SAMMENSKRUBARE KUNSTSTOFFROER OG KUNSTSTOFFROER FREMSTILT DERVED.

摘要

The invention relates to a process for applying a metallic coating to the thread sections of plastic pipes which can be screwed to one another, in particular fibre-reinforced plastic pipes, the said thread sections being formed at the ends as a tap or socket part. To provide a process for applying a metallic coating to the thread sections of plastic pipes which can be screwed to one another, in particular fibre-reinforced plastic pipes, said thread sections being formed at the ends as a tap or socket element, which process is faster and cheaper than known processes, can be readily integrated in the production line and is advantageous with regard to preventive environmental protection, it is proposed to spray droplets of a metal or of a metal alloy to the thread section at high speed and at an adjustable angle of contact, the pipe or the socket being rotated during spraying and the spray apparatus and the pipe or the socket moving relative to one another in the longitudinal direction. ……