Recently, Ren Yanming, a member of the Xuangong Hydraulics Plant, proposed a process improvement proposal for the problem of poor concentricity of the valve hole in the control valve processing, so that the valve hole changes from “centrifugal†to “concentricâ€.
The control valve is a key component of the main machine. The original process requires that the hole in the interior of the car be reamed before the hole, which can easily lead to two step holes with a left/right valve body diameter of 22 mm, and the valve stem and the valve body cooperate. The gap is only 0.02-0.03 mm, and the misalignment will cause the valve stem to confess in the valve body, and the operation is inflexible, thereby affecting the work performance of the complete machine. In this regard, Ren Yanming broke the boundaries of the type of work, proposed to change the processing technology to the first reaming hole, and then the rationalization of the car slot, and increase the deburring process. After repeated trials, the quality has been greatly improved, ensuring the concentricity of the valve hole, solving the old problem of relieving the gap between the stem and the valve hole by hand, and improving the work efficiency by more than doubled.
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