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水泵的主体零件是泵体和叶轮。一台水泵性能是否合格,取决于泵体和叶轮过流道的形状、尺寸精度和光洁平整度的好坏。流道的形状和尺寸是容易控制的;但如何提高泵体、叶轮过流道的光洁平整度,是我厂一直在探索的问题。我们采用单一滑石粉作砂芯敷料进行了试验取得成功,现已正式用于生产,质量稳定,效果很好,大大提高了水泵的性能合格率。79年我省水泵行业来厂检查质量,检查了铸件,认为泵体、叶轮过流道光洁平整度很好,要求我厂总结这一经验材料,以便在水泵行业中推广。现将砂芯单一滑石粉敷料工艺介绍如下:
The main parts of the pump body and impeller. A pump performance is qualified, depends on the pump body and impeller over-flow channel shape, size and smoothness of smoothness is good or bad. The shape and size of the runner is easy to control; however, how to improve the smoothness and smoothness of the pump body and the impeller runner is a problem that our factory has been exploring. We use a single talcum powder for sand core dressing has been successfully tested, is now officially used in the production, quality and stability, the effect is very good, greatly improving the performance of the pump passing rate. 79 years to pump factory in our province to check the quality of the factory to inspect the castings, that the pump body, impeller over the smooth and smooth flow well, requiring our plant to summarize the experience of materials in order to promote the pump industry. Now the sand core talcum powder dressing process described below: