This paper mainly analyzes the case II of dynamic response model, which only considers the influence of the increase of sliding friction coefficient on the dynamic response of gear system, analyzes the influence of the aggravation of gear pitting fault on the friction coefficient of gear tooth surface, and...
This paper mainly analyzes the dynamic response model simulation case 1. That is to say, only the influence of gear meshing stiffness reduction on the dynamic response of gear system is considered. The influence of gear pitting failure on the time-varying meshing stiffness of gear system is calculated and...
(1) Fire protection requirements for buildings of heat treatment plant: The heat treatment workshop or working section shall be set at the periphery of the workshop and separated from other workshops by firewalls. There shall be a special warehouse for storing flammable or combustible liquids and meeting the fire...
The common materials for gears are 20Cr, 20CrMnTi and 18Cr2Ni4WA. (1) 20Cr It has high strength and hardenability, but poor toughness. During carburizing, there is a tendency of grain growth, and the direct cooling quenching has a great influence on the impact toughness. Therefore, after carburizing, the secondary quenching...