Title:
METAL COMPOSITE PIPE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/088648
Kind Code:
A1
Abstract:
A metal composite pipe and a manufacturing method therefor. The metal composite pipe comprises a base material pipe and a surfacing layer. For the surfacing layer, a nickel-based, stainless steel or cobalt-based material is surfaced by using a GMAW or LBW method on the base material pipe made of carbon steel, alloy steel or stainless steel, and the surfacing layer is polished by using a mechanical polishing method. The manufacturing method is not restricted by a production mold, small-batch production can be carried out, the process is relatively simple, the quality is stable, the precision is high, a composite layer and a base material are metallurgically combined, the shear strength is higher than that of the prior art, and the production efficiency is high.
Inventors:
LI HAISHENG (CN)
DUAN JUNJIE (CN)
LI YINGSHEN (CN)
GUO JUNFEI (CN)
JIANG CHONGFU (CN)
DUAN JUNJIE (CN)
LI YINGSHEN (CN)
GUO JUNFEI (CN)
JIANG CHONGFU (CN)
Application Number:
PCT/CN2021/093114
Publication Date:
May 05, 2022
Filing Date:
May 11, 2021
Export Citation:
Assignee:
POURIN SPECIAL WELDING TECH CO LTD (CN)
International Classes:
B23P15/00; F16L9/02
Foreign References:
| CN112303344A | 2021-02-02 | |||
| CN102909463A | 2013-02-06 | |||
| CN1991291A | 2007-07-04 | |||
| US6013890A | 2000-01-11 | |||
| EP1535696A1 | 2005-06-01 | |||
| JPH07256450A | 1995-10-09 | |||
| JP2016123992A | 2016-07-11 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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