The investigation of the influence of thermomechanical treatment of the material of rotary cutter bit toolholders on its hardness

International Conference on Mechanical Engineering, Automation and Control Systems 2016

机械制造;无线电电子学;计算机科学

Chupin, S.A.^1 ; Bolobov, V.I.^1

Saint-Petersburg Mining University, 2, 21st Liniya, Saint-Petersburg

199106, Russia^1

关键词: Material hardness;    Medium strengths;    Road headers;    Rotary cutters;    Strain intensity;    Toolholders;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/177/1/012062/pdf
DOI  :  10.1088/1757-899X/177/1/012062

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The causes of failure of the tangential rotary cutter bits of the road header during stonedrift in rocks of medium strength are analyzed in the article. It was revealed that the most typical cause of failure of cutter bits is premature wear of the toolholder (body) of the cutter bit. It is well known that the most effective way to improve the wear resistance is to increase hardness. The influence of the thermomechanical treatment of the material of the cutter bit toolholder on its hardness is studied. It was established that the thermomechanical treatment of the cutter bit toolholder material results in the increase of its hardness. It was found that the increase of material hardness is proportional to the increase of material strain intensity during thermomechanical treatment. It was concluded that the use of thermomechanical treatment can lead to the increase of both the hardness and wear resistance of the cutter bit material.