Welding Electrode Manufacturing Technology for Marine Anchor Chain Flash Butt Welding Machine

Tuan Anh Phung1,
1 Military Technical Academy, 236 Hoang Quoc Viet, Bac Tu Liem, Ha Noi

Main Article Content

Abstract

In this paper, a study on manufacturing technology of welding electrodes from CuNi3Si alloy for marine anchor chain flash butt welding machine was reported. Remelting regime and heat treatment are clearly determined through experimental processes. Casting temperature was established in the range of (1170-1200) °C. After casting, the alloy was homogenized at temperature 900±10 °C for 4 hours. Forging temperature for casting blank was in the range of (750-900) °C. After forging, the electrode blank was remelted/solution treated and aged: time 2 hours. Finish heat treatment was carried out at heating to 600±10 °C in 2 hours. Heating solution treatment temperature was set at 850 °C. Optimizing annealing temperature and holding time: annealing was carried out at 450 °C, 3h. The mechanical properties of the welding alloy after 240 HV5, yield strength 757.9 MPa, tensile strength of 559.8 MPa, relative elongation of 8.5%, electrical conductivity reached 34.5% IACS. Welding electrodes meet the requirements of quality imported electrodes used in automatic welding lines.

Article Details

References

[1] Сисоеверг С. К., Чунинников П. Л. Электроди для контактной сварки. Л.: Машиностроение, 1972.
[2] Hongyan Zhang , Jacek Senkara. Resistance Welding: Fundamentals and Applications. CRC Press, Second Edition, 2011.
[3] Nguyễn Văn Chiến. Nghiên cứu và sản xuất các loại hợp kim đồng hợp kim dùng làm bán hàn ke neo xích cho hải quân. Báo cáo tổng kết đề tài cấp Bộ Công thương 2004.
[4] Phạm Bá Kiêm. Nghiên cứu công nghệ sản xuất hợp kim trung gian Cu-Zr-Mg-Cu-B sử dụng phương pháp hợp hình. Báo cáo tổng kết đề tài cấp Bộ Công thương 2006.
[5] Phạm Bá Kiêm. Dự án sản xuất thử nghiệm điện cực hàn từ hợp kim đồng hợp kim như hệ Cu-Cr-Zr. Báo cáo tổng kết đề tài cấp Bộ Công thương 2008.
[6] H. Tsubakihara, R. Nozato, A. Yamamoto. Precipitation sequence for simultaneous continuous and discontinuous modes in Cu-Be binary alloys. Materials Science and Technology, Volume 9, Issue 4 (1993), pp. 288-294.
[7] Djuric P, Jovanovic M, Drobnjak DJ. A study of precipitation in Cu-Be alloys. Metallography, 13 (1980), pp. 235-247.
[8] Corson M. G. Electrical conductor alloys
[9] Lu, De-ping, Wang Jun, Arens, A., Zou, Xing-quan, Lu, Lei and Sun, Bao-de. Calculation of Cu-rich part of Cu-Ni-Si phase diagram