Research on the High-Temperature Strength of Heavy Drilling Tool in the Rough Machining Process

DOI

10.2991/icmsa-15.2015.90How to use a DOI?

Keywords

Alternating Thermal Stress, Intermittent Cutting Process, 3D Cutting Model, Thermal Fatigue.

Abstract

In the rough machining process, the thermal fatigue fracture is the destructive phenomenon which often affects the service life of cemented carbide insert. This paper explores the problem of hot crack production of super-heavy turning tool, and the 3D cutting model is established. In order to simulate the interrupted cutting as accurately as possible, supposing that the heat flow in this model is the rectangular wave, and then using finite element method to simulate the distribution state of both the alternating temperature and the thermal stress. However, for accurate analyzing and researching the contact state between the tool and chips, the intermittent cutting test is made under the condition of laboratory. The experimental result shows that in different cutting process, the temperature distribution on tool’s surface is uneven and there are tensile stress together with compressive stress exist in the vicinity of the cutting edge. Besides the size of two kinds of stress depends on the performance of the tool material and cutting conditions, and they are the main reason for causing the thermal crack.

Copyright

© 2015, 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  - Geng-Huang He
AU  - Chong-Hu Wu
AU  - Xian-Li Liu
AU  - Shou-Quan Zhang
AU  - Ling-Li Zou
AU  - Dong-Jin Li
PY  - 2014/06
DA  - 2014/06
TI  - Research on the High-Temperature Strength of Heavy Drilling Tool in the Rough Machining Process
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 496
EP  - 501
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.90
DO  - 10.2991/icmsa-15.2015.90
ID  - He2014/06
ER  -