Spray deposition process of wire electrical explosion in protective atmosphere

doi:10.13251/j.issn.0254-6051.2020.03.030

Abstract

Abstract:

A wire electrical explosion spray deposition device was developed with a protective atmosphere, and a pure aluminum wire was used for the electrical explosion spray deposition test on a small diameter cylinder. The influencing factors and the micro-hardness were analyzed. The results show that under the test deposition distance, an electrical explosion is occurred in the constrained groove with a width of 3 mm and a deposition layer with width of about 4 mm is obtained. After the entire cylindrical surface is lapped, the thickness of the deposition layer is tended to be uniform. When the charging voltage of the capacitor is 9 kV and the diameter of the aluminum wire is 0.3 mm, the obtained deposition layer has the smallest void ratio and the highest micro-hardness. The grain size in the deposited layer is about 4 μm.

Key words: wire electrical explosion, spray deposition, void ratio, hardness

CLC Number:

TG174.44

Bai Xuehu, Zhu Liang, Han Feng, Wang Xudong. Spray deposition process of wire electrical explosion in protective atmosphere[J]. HTM, 2020, 45(3): 158-161.

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