在检修中发现,罗茨风机叶轮轴承台的磨损十分严重,磨损速率约0.05mm/年,磨损量很快使轴承台尺寸超过工差要求,针对这种情况,我们选用热喷涂方法对其进行修复,效果比较好.采用氧乙炔热喷涂,选SPH-E喷枪,喷涂两层粉末,其中用镍包铝粉打底,镍基合金粉末作为工作层粉末.操作过程如下:(1)将工件夹到车床上,调整车床转速150r/m(工件直径为φ80mm).(2)调整好气体压力,氧气为0.5～0.7MPa,乙炔为0.03～0.05MPa. Overhaul found that Roots blower impeller bearing wear is very serious, the wear rate of about 0.05mm / year, the wear quickly so that the size of the bearing table exceeds the work requirements, in view of this situation, we use the thermal spray method to its Repair, the effect is better.Using oxyacetylene thermal spraying, the election SPH-E spray gun, spray two layers of powder, which with nickel-coated aluminum powder base, nickel-based alloy powder as a working layer powder.Processing is as follows: (1) Clip to the lathe, adjust the lathe speed 150r / m (workpiece diameter φ80mm). (2) adjust the gas pressure, oxygen is 0.5 ~ 0.7MPa, acetylene is 0.03 ~ 0.05MPa.