Paper Title:
Technical Study of Exhaust Valve Overlaying Based on Micro-Plasma Arc Welding
  Abstract

The micro-plasma arc welding technology(MPAW) was used to remanufacture the exhaust valve of W615 engine. The ST6 Co alloy powder was selected as overlaying material, the processing parameters of overlaying was optimized considering the geometry demand of deposited layer, and the current downslope method was adopted to weaken the arc crater. The microstructure characteristics and the micro-hardness of the weld were investigated, no defects were found in the deposited layer or at the interface, and the heat-affected zone among joint was not evident. The maximum hardness situated at the top layer being 657.8HV, with a slight decrease towards the bottom layer and fusion zone.

  Info
Periodical
Key Engineering Materials (Volumes 373-374)
Main Theme
Edited by
M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
Pages
330-333
DOI
10.4028/www.scientific.net/KEM.373-374.330
Citation
Y. H. Xiang, B. S. Xu, Y. H. Lv, D. Xia, "Technical Study of Exhaust Valve Overlaying Based on Micro-Plasma Arc Welding", Key Engineering Materials, Vols. 373-374, pp. 330-333, 2008
Online since
March 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chun Xia Zhang, Fu Shun Liu, Sheng Kai Gong, Hui Bin Xu
Abstract:Two layer thermal barrier coatings (TBCs) were prepared by EB-PVD (Electron Beam-Physical Vapor Deposition) at different substrate...
3997
Authors: Zhi Qiang Fu, Cheng Biao Wang, Wei Wang, Zhi Jian Peng, Xiang Yu, Song Sheng Lin, Ming Jiang Dai
Abstract:W-doped DLC films were synthesized from ethyne and tungsten by ion beam deposition and magnetron sputtering, and the influence of W target...
477
Authors: Pei Quan Guo, Shou Ren Wang, Huan Yong Cui
Abstract:The study reports a new surface formation technology during manufacturing process of parallel indexing cam mechanism, ion beam sputtering...
465
Authors: Fei Xiong Mao, Tao Liu, Shi Wei Liu, Jing Kun Yu
Chapter 16: Sustainable Manufacturing Technologies
Abstract:Mg films were prepared by magnetron sputtering on zirconia substrate. The surface morphology, structure and adhesion performance were...
2834