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    • 40. 发明公开
    • 복합관 제조방법
    • 制造复合管的方法
    • KR1020040009988A
    • 2004-01-31
    • KR1020020045699
    • 2002-07-25
    • 김형근
    • 김형근
    • B29C63/34
    • B29C65/10B29C47/0023B29C65/44B29C65/48B29C65/66B29C66/522B29C66/742B29K2705/00B29L2023/22
    • PURPOSE: A method for manufacturing a complex pipe is provided to improve corrosion resistance and intensity by attaching a synthetic resin pipe to the inside of a metal pipe. CONSTITUTION: A method for manufacturing a complex pipe comprises the steps of: coating the outer surface of a synthetic resin pipe(2) with adhesive resins(3) having a lower melting point than synthetic resin; inserting the synthetic resin pipe into a metal pipe(1); closing both ends of the synthetic resin pipe; applying air pressure to the inside of the synthetic resin pipe; heating the metal pipe from the center or one end; and expanding the synthetic resin pipe and heating the adhesive resins.
    • 目的:提供一种制造复合管的方法,通过将合成树脂管附接到金属管的内部来提高耐腐蚀性和强度。 构成:制造复合管的方法包括以下步骤:用合成树脂熔点低的粘合剂树脂(3)涂覆合成树脂管(2)的外表面; 将合成树脂管插入金属管(1)中; 关闭合成树脂管的两端; 将空气压力施加到合成树脂管的内部; 从中心或一端加热金属管; 并扩大合成树脂管并加热粘合剂树脂。