Process for the manufacture of substantially...

Details Process for the manufacture of substantially... Process for the manufacture of substantially...

H - Electricity

01

B

H01B 17/26 (2006.01) B28B 1/20 (2006.01) B29C 41/20 (2006.01) H01B 19/00 (2006.01) B29C 41/04 (2006.01)

Patent

CA 2164631

For the manufacture of substantially hollow-cylindrical castings (5), especially leading-in insulators for conductors under high voltage, a more or less liquid casting material (50) is introduced into a substantially hollow-cylindrical casting mould (2) that is driven in rotation. Before the introduction of the casting material, the casting mould is heated to a temperature above the gelling temperature of the casting material. The casting mould (2) filled with casting material (50) is driven in rotation until a casting (5) that is substantially set solid has been formed. The casting so formed is then removed from the casting mould. Before the introduction of the casting material into the casting mould, however, a substantially hollow-cylindrical mesh fabric (1) is introduced into the heated casting mould (2) concentrically to the axis of rotation (22) thereof, and only then is the casting material (50) introduced into the casting mould (2).

Pour la fabrication de pièces moulées (5) sensiblement cylindriques et creuses, en particulier des isolateurs d'entrée pou des conducteurs soumis à une tension élevée, un matériau de moulage (50) plus ou moins liquide est introduit dans un moule (2) sensiblement cylindrique et creux entraîné en rotation. Avant l'introduction du matériau de moulage, le moule est chauffé à une température supérieure à la température de gélification du matériau. Le moule (2) rempli dudit matériau (50) est entraîné en rotation jusqu'à ce qu'une pièce moulée sensiblement solide soit obtenue. La pièce ainsi formée est ensuite retirée du moule. Toutefois, avant l'introduction du matériau de moulage dans le moule, un tissu à mailles (1) sensiblement cylindrique et creux est introduit dans le moule chauffé (2) de façon concentrique par rapport à son axe de rotation (22), alors seulement le matériau de moulage (50) peut être introduit dans le moule (2).

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