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转子是构成滑片式回转空气压缩机的重要零件,转子槽的加工难度较大。图1是HY37型滑片式回转空压机转子工作图。转子由40Cr合金结构钢锻造毛坯,热处理后的机械性能是:抗拉强度σ_b≥650N/mm~2;弯曲疲劳极限σ_(-1)≥295N/mm~2;屈服强度σ≥450N/mm~2;布氏硬度为HB229～269。转子上有8个等分径向槽,槽宽为9.5_0~(+0.09)、槽深为89.2_0~(+0.14)、槽长度为1115.5,槽表面粗糙度R。值应小于2.5μm、形位公差要求如图1所注,转子净重750kg。
Rotor is composed of vane rotary air compressor important parts, rotor groove machining more difficult. Figure 1 is a HY37 vane rotary compressor rotor work map. The rotor is forged by a 40Cr alloy structural steel. The mechanical properties after heat treatment are: tensile strength σ_b ≥ 650N / mm ~ 2; bending fatigue limit σ _ (-1) ≥295N / mm ~ 2; yield strength σ≥450N / mm ~ 2; Brinell hardness HB229 ~ 269. There are 8 radial grooves on the rotor, the groove width is 9.5_0 ~ (+0.09), the groove depth is 89.2_0 ~ (+0.14), the groove length is 1115.5, the groove surface roughness R The value should be less than 2.5μm, the form of tolerance requirements shown in Figure 1 Note, the rotor net weight 750kg.