While hydraulic technology is widely used, people pay more and more attention to the deburring problem of the parts in the system, especially the valve parts, which are formed by a plurality of through holes and main valve holes. The resulting burr is difficult to remove because it is located in the deep part of the part and is invisible and invisible in many cases. Parts with sharp edges and burrs are detached by high pressure and ultra-high pressure liquid during work, causing the valve hole and stem surface to be scratched and the seal to be damaged.
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