Title:
IN-MOLD COOLING SHAFT FOR WELDING ROLL USED IN HIGH-FREQUENCY PIPE MAKING, AND COOLING DEVICE FOR WELDING ROLL USED IN HIGH-FREQUENCY PIPE MAKING
Document Type and Number:
WIPO Patent Application WO/2022/088449
Kind Code:
A1
Abstract:
An in-mold cooling shaft for a welding roll used in high-frequency pipe making. The in-mold cooling shaft is internally provided with a cooling water input flow channel leading to one end of the cooling shaft, and a cooling water output flow channel leading to the other end of the cooling shaft, wherein a water inlet of the cooling water input flow channel and a water outlet of the cooling water output flow channel are respectively located in respective corresponding end faces. Two end faces of the cooling shaft are provided with water pipe connecting nozzles, which are in communication with the water inlet of the cooling water input flow channel and the water outlet of the cooling water output flow channel, and a water outlet of the cooling water input flow channel and a water inlet of the cooling water output flow channel are both located in a side face of the cooling shaft. A welded pipe cooling device using the in-mold cooling shaft has the effect of cooling a welding roll mold and a bearing. Severe losses caused by high-temperature damage to the mold and shutdown can be avoided; and cooling water circulates in the mold, and as such, a molten weld pass can also be prevented from coming into contact with the cooling water during welding. Therefore, the toughness of the weld pass is improved, and the production quality is stabilized.
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Inventors:
LIN JIANWEI (CN)
Application Number:
PCT/CN2020/138301
Publication Date:
May 05, 2022
Filing Date:
December 22, 2020
Export Citation:
Assignee:
ZHANGQUAN HARDWARE PRODUCTS KUNSHAN CO LTD (CN)
International Classes:
B23K13/00
Foreign References:
| JPS62107874A | 1987-05-19 | |||
| CN210817930U | 2020-06-23 | |||
| CN109676230A | 2019-04-26 | |||
| CN104607792A | 2015-05-13 | |||
| CN109877497A | 2019-06-14 | |||
| CN106041288A | 2016-10-26 | |||
| JPH10128557A | 1998-05-19 |
Attorney, Agent or Firm:
JIANGSU CO-FAR LAW FIRM (CN)
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