Fabrication process of cross-linked polyolefin insulation power cable

Abstract

The invention provides a fabrication process of a cross-linked polyolefin insulation power cable, and belongs to the technical field of power cable manufacturing. The technological process comprises the steps that cable conductor paying-off is performed; upward traction is performed; heating extrusion insulation is performed by a plastic extruding machine with an electromagnetic method; when a main body box of cross-linked equipment is irradiated by ultraviolet light, defined amount of a photo-crosslinking sensitizer is added into a polyolefin-based resin, the characteristic that the polyolefin material is in a transparent state during heating extrusion is used to focus the ultraviolet light irradiation and transmit into the material, the high-energy ultraviolet light triggers the photo-crosslinking sensitizer to form free radicals and further induces a polyolefin unit to generate macromolecular free radicals, and the cross-linked polyolefin material is formed through a bonding function between the free radicals; the cross-linked polyolefin material enters a water tank for sizing and cooling; checking out is performed by an electric discharge machine; downward traction is performed; and wire gathering and laying is performed. The process replaces the traditional silane cross-linked polyethylene insulation power cable, is energy-saving, shortens the production cycle of the cable, saves the production cost, and increases the market competitiveness.

Description

technical field [0001] The invention relates to the technical field of power cable production and manufacturing, in particular to a manufacturing process of cross-linked polyolefin insulated power cables. Background technique [0002] In general, traditionally, the production of power cables is based on the cast aluminum heating system of the extruder, which consumes a lot of electricity, consumes a lot of energy, has a long cable production cycle, relatively high production costs, and is greatly hindered in terms of market competitiveness. There is no advantage in the stability of production speed and product quality. Contents of the invention [0003] The technical task of the present invention is to solve the deficiencies of the prior art and provide a manufacturing process for cross-linked polyolefin insulated power cables. [0004] The technical solution of the present invention is realized in the following manner. The production process of the cross-linked polyolefi...

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Problems solved by technology

[0002] In general, traditionally, the production of power cables is based on the cast aluminum heating system of the extruder, which consumes a lot of electricity, consumes a lot of energy, has a long cable production cycle, relatively high production costs, and is greatly hindered in terms of market competitiveness. There is no advantage in the stability of production speed and product quality

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