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近几年来,国外液压行业研制成可调电镀金刚石铰刀加工阀孔新工艺。这种新工艺方法,使阀孔的尺寸精度、几何精度稳定可靠地达到0.0025毫米以内的新水平。我厂于1979年研制成功φ16毫米电镀金刚石铰刀以来,现已将我厂生产的各种孔径规格的阀孔,全采用了这种新工艺,获得了与国外同样的效果。最近又研制成立方氮化硼铰刀,解决了软钢、淬硬钢等材料的阀孔超精加工问题。
In recent years, the foreign hydraulic industry developed into adjustable diamond plating reamers machining valve hole new technology. This new process, the valve hole size accuracy, geometric accuracy and stability to achieve a new level of 0.0025 mm or less. Since our factory successfully developed φ16 mm electroplated diamond reamers in 1979, the valve holes of various pore sizes produced by our factory have been fully adopted and gained the same effect with foreign countries. The recent development of the establishment of the square boron nitride reamers to solve the soft steel, hardened steel and other materials, valve hole superfinishing problems.