The tunnels and underground projects bring an unprecedented development of hard rock tunneling *** forming process and material properties of the 20 inch disccutterring has been studied by the finite element simulat...
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The tunnels and underground projects bring an unprecedented development of hard rock tunneling *** forming process and material properties of the 20 inch disccutterring has been studied by the finite element simulation and test *** effects of blank size,blank heating temperature,mold preheating temperature and friction coefficient on the forming load,minimum surface temperature and blank deformation uniformity of 20 inch cutterring were *** results show the optimum combination of the forming process of the 20 inch disccutterring is when the blank height is 90 mm,the blank heating temperature is 1200 °C,the preheating temperature is 280 °C,and the friction coefficient is *** test and hardness test were carried out on the edge material of the cutter *** test results show that when the temperature exceeds 600 °C,the hardness and compressive strength of the cutterring material will drop ***,the tbm should be properly cooled during *** research results in this paper can provide a basis for the optimization of tbmdisccutterring processing technology and engineering applications.
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