Method of manufacturing pipe for heat exchanger

The present invention provides a method for manufacturing a pipe for a heat exchanger, which comprises: (a) a step of sequentially laminating a first coating member and a second coating member on a surface of a metal pipe raw material; and (b) a step of manufacturing the pipe for the heat exchanger...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SHIN, YOON HO
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:The present invention provides a method for manufacturing a pipe for a heat exchanger, which comprises: (a) a step of sequentially laminating a first coating member and a second coating member on a surface of a metal pipe raw material; and (b) a step of manufacturing the pipe for the heat exchanger on which a first coating substrate layer and a second coating substrate layer are formed on the outer surface by heating the first coating member and the second coating member laminated on the metal pipe raw material at 250-500°C and contracting the first coating member and the second coating member. According to the present invention, the method for manufacturing a pipe for a heat exchanger forms a coating layer having excellent features such as acid resistance and corrosion resistance on the surface by laminating the first coating member and the second coating member on the surface of the metal pipe raw material, heating and contracting the same at a high temperature, and preventing a problem such as hole generation due to melting which occurs when a single-layer coating substrate is laminated. 본 발명은 (a) 금속 파이프 원재의 표면에 제1 코팅 기재 및 제2 코팅 기재를 순차적으로 적층시키는 단계; 및 (b) 상기 금속 파이프 원재에 적층시킨 제1 코팅 기재 및 제2 코팅 기재를 250 내지 500 ℃의 온도로 가열하여 상기 제1 코팅 기재 및 제2 코팅 기재를 수축시켜 외면에 제1 코팅 기재층 및 제2 코팅 기재층이 형성된 열교환기용 파이프를 제조하는 단계;를 포함하는 열교환기용 파이프의 제조방법을 제공한다. 본 발명에 따른 열교환기용 파이프의 제조방법은, 제1 코팅 기재 및 제2 코팅 기재를 각각 금속 파이프 원재의 표면에 적층한 다음, 고온으로 가열 수축시켜 단일층 코팅 기재를 적층할 경우 발생되는 용융에 의한 홀 발생 등의 문제점을 방지하여 표면에 내산성, 내부식성 등의 특성이 우수한 코팅층을 형성시킬 수 있도록 한다.