Test and analysis of electric arc machining characteristics of high-temperature alloy materials

DOI

10.2991/icmse-18.2018.62How to use a DOI?

Keywords

High-temperature alloy；Electric arc machining；Electrical machining parameters.

Abstract

Short electric arc machining is a new type of non-contact strong current machining, it has the charactristics of no cutting force, simple electrode manufacturing, high processing efficiency, etc. In order to study the machining properties of Ni-base high-temperature alloy materials,the mechanical machining properties and the arc machining characteristics of Ni-base high-temperature alloy materials are analyzed theoretically and the corresponding short arc machining mechanism is determined, then it uses that orthogonal test to carry out short arc machining experiment on Ni-base high-temperature alloy and determines the primary factor and optimal electrical machining parameter which affect the quality of the machined surface. The result shows that the lower the discharge voltage, the better the surface quality of the processed materials under the same electrical parameters. The factors that affect the surface quality of the workpiece are the power supply voltage > discharge gap > spindle speed and the best electrical machining parameters are 0.5mm in discharge gap, 60r/min in spindle speed and 10V in power voltage. At the same time, thermal impact analysis is carried out by using infrared thermography and surface heat affected layer after processing is tested and analyzed. Finally, the change rule of metallographic structure, hardness and heat affected layer of it after arc machining are determined. Experiments show that the strength and hardness are improved and the matrix structure of crystal is less affected by heat, metallographic structure has no obvious change and it can get a better surface quality, which provides a theoretical basis for high-temperature alloy materials for arc machining.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hai Peng
AU  - Xuliang Pan
PY  - 2018/05
DA  - 2018/05
TI  - Test and analysis of electric arc machining characteristics of high-temperature alloy materials
BT  - Proceedings of the 2018 8th International Conference on Manufacturing Science and Engineering (ICMSE 2018)
PB  - Atlantis Press
SP  - 317
EP  - 323
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-18.2018.62
DO  - 10.2991/icmse-18.2018.62
ID  - Peng2018/05
ER  -