Multi-layer pipe manufacturing apparatus and method of manufacturing multi-layer pipes using the same
AssigneeDongyeun Co., Ltd.
InventorsDongseok JANG, Jongbae PARK
Life of this patent
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Abstract
An apparatus for manufacturing a multi-layer pipe is provided. The apparatus includes a ram extruding a matrix pipe, which is formed by inserting one or more insert pipes having different diameters into a receiving pipe, with a constant compression force, a heat-treatment unit heat-treating the matrix pipe extruded from the ram, and a drawing unit drawing, with a constant drawing force, the matrix pipe passing through the heat-treatment unit into a multi-layer pipe having a predefined diameter.
Claims21
An apparatus for manufacturing a multi-layer pipe, the apparatus comprising:
- a ram extruding a matrix pipe, which is formed by inserting one or more insert pipes having different diameters into a receiving pipe, with a constant compression force;
- a heat-treatment unit heat-treating the matrix pipe extruded from the ram;
- and
- a drawing unit drawing, with a constant drawing force, the matrix pipe passing through the heat-treatment unit into a multi-layer pipe having a predefined diameter.
A method of manufacturing a multi-layer pipe using an apparatus for manufacturing a multi-layer pipe, the method comprising:
- a first stage of forming a matrix pipe by inserting one or more insert pipes having different diameters into a receiving pipe;
- a second stage of introducing the matrix pipe into a ram to extrude the matrix pipe with a constant compression or extrusion force;
- a third stage of introducing the matrix pipe extruded from the ram into a heat-treatment unit to heat-treat the matrix pipe;
- and
- a fourth stage of clamping an end of the matrix pipe heat-treated by the heat treatment unit and drawing the matrix pipe with a constant drawing force to form a multi-layer pipe having a desired diameter, using a drawing unit.
Dependencies are inferred from the claim text.