Possible ways to expand range of rock strength, destroyed by cutter bit

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Bolobov, V.I.^1 ; Iusupov, G.A.^1

Saint-Petersburg Mining University, 21 Liniya V.O. 2., Saint-Petersburg

199106, Russia^1

关键词: Durable materials;    High-strength materials;    Rock destruction;    Rock strength;    Strength analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/2/022003/pdf
DOI  :  10.1088/1755-1315/87/2/022003

来源: IOP

【 摘 要 】

The strength analysis of the rotary tangential cutter in the conditions of rock destruction has shown that the stresses in the most dangerous section of the tool (at the junction of the head and shank of the holder) are distributed, mainly, near the surface. This makes it possible to increase the overall strength of the tool by making its holder in the form of a bimetallic construction, the shell of which is made of high-strength material, and the core of a highly viscous, not necessarily durable material. By the example of the RKS-2 it is shown that the use of a bimetallic holder extends the range of tool work on rocks with a strength up to f = 8.