Patent ID: 9321188
Filing Date: 2016-04-26
CPC Classification: B28B,B30B,C04B

Claim Text:
1. A method for manufacturing of ceramic electro-insulating pipes having an external diameter between 30 mm and 100 mm, a wall thickness between 5 mm and 10 mm, a length between 15 cm and 150 cm, the method comprising: providing a mould comprising a rigid cylindrical lower punch and a flexible cylindrical outer membrane placed around the lower punch, wherein a cylindrical gap for ceramic powder is present between the lower punch and the flexible cylindrical outer membrane, filling the cylindrical gap of the mould with a ceramic powder consisting of Al compacting the filled mould in an isostatic press to obtain a compacted element, comprising pressing the mould isostatically: glazing the compacted element to obtain a glazed element, firing the glazed element in a furnace to obtain a fired element, and shaping the fired element to the shape of the ceramic insulating pipe.