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我厂生产的空气压缩机和氮氢气压缩机的环状阀阀座与阀片配合的密封面要求较高,光洁度达（?）9,不允许有任何缺陷,材质为QT60-2。过去,密封面由手工研磨,劳动强度大,质量不易保证,因而不能适应生产迅速发展的需要。 今年,我厂装配车间技革组工人师傅和技术人员一起,设计制造了阀座研磨机,经使用证明效果良好。该机工作情况参见图1。
I plant the production of air compressors and nitrogen and hydrogen compressor ring valve seat and valve with the sealing surface demanding, finish (?) 9, does not allow any defects, the material is QT60-2. In the past, the sealing surface by manual grinding, labor-intensive, quality is not easy to guarantee, and therefore can not meet the needs of the rapid development of production. This year, our factory assembly workshop technician leather workers and technical staff together, the design and manufacture of the seat grinding machine, the use of proven good results. The aircraft working situation shown in Figure 1.