金属热处理 ›› 2020, Vol. 45 ›› Issue (3): 158-161.DOI: 10.13251/j.issn.0254-6051.2020.03.030

• 工艺研究 • 上一篇    下一篇

保护气氛中丝电爆喷射沉积工艺

白学虎1, 朱亮1,2, 韩峰1, 王旭东1   

  1. 1. 兰州理工大学 材料科学与工程学院, 甘肃 兰州 730050;
    2. 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室, 甘肃 兰州 730050
  • 收稿日期:2019-09-23 出版日期:2020-03-25 发布日期:2020-04-03
  • 通讯作者: 朱 亮,博士生导师,主要从事焊接工艺及设备、电爆喷涂工艺及设备研究,E-mail:zhul@lut.cn
  • 作者简介:白学虎(1989—),男,硕士研究生,主要从事电爆喷射沉积方法及设备研究,E-mail:502915748@qq.com。
  • 基金资助:

    国家自然科学基金(51765038)

Spray deposition process of wire electrical explosion in protective atmosphere

Bai Xuehu1, Zhu Liang1,2, Han Feng1, Wang Xudong1   

  1. 1. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou Gansu 730050, China;
    2. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou Gansu 730050, China
  • Received:2019-09-23 Online:2020-03-25 Published:2020-04-03

摘要:

开发了在保护气氛中丝电爆喷射沉积装置,在小直径圆柱体上选用纯铝丝进行电爆喷射沉积试验。分析沉积层形成过程中的影响因素与显微硬度。结果表明:在试验沉积距离下,宽度为3 mm的约束槽中发生电爆获得约4 mm宽的沉积层。整个圆柱面搭接沉积后,沉积层的厚度趋于均匀。当电容充电压为9 kV,铝丝直径为0.3 mm时,获得的沉积层的孔洞率最小、硬度值最高。沉积层中晶粒尺寸约为4 μm。

关键词: 丝电爆, 喷射沉积, 孔洞率, 硬度

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

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