How to control the normal stress between sealing faces is a critical factor while using metal face seals for rollingcutter rock bits.
在牙轮钻头中成功应用单金属浮动金属密封结构的关键在于控制密封端面之间的接触压力。
2
The structure and material of rollingcutter, the corresponding heat treatment, the edge grinding technology and the machine structure have been improved and renovated.
The new rollingcutter for the recoiling vest-like plastic bag manufacturing device is developed, the structure, material, heat treatment process and edge grinding techniques are improved.