我国自1962年开始生产螺杆压缩机以来,由于对其关键零件——转子的加工及啮合精度无法检验,致使产品精度无法鉴定,质量难于提高。由于加工误差及啮合精度无法测定,设计时对用来补偿加工误差等的间隙值只得盲目增大,例如对φ200mm转子,国外通常取间隙值为0.04～0.06mm,国内则取0.18～0.20mm。又因空间接触线长,例如φ200mm长导程转子,接触线全长为971mm,由高压侧向低压侧产生严重漏气,据有关资料介绍,啮合 Since 1962, China began to produce screw compressors, due to its key parts - rotor machining and meshing accuracy can not be tested, resulting in product accuracy can not be identified, the quality is difficult to improve. Due to the processing error and meshing accuracy can not be determined, the design time to compensate for the machining error and so on the gap value has only blindly increased, for example, φ200mm rotor, usually take the gap abroad is 0.04 ~ 0.06mm, 0.18 ~ 0.20mm. Due to space contact with the wire length, such as φ200mm long lead rotor, the contact line length of 971mm, from the high-pressure side to the low-pressure side of a serious leak, according to the relevant information, engagement