Method for cutting black metal by diamond tool

Abstract

The invention provides a method for cutting black metal by a diamond tool. A barometric pressure cold plasma jet regulated and controlled cutting interface is combined with ultrasonic vibration auxiliary cutting. Under a barometric pressure condition, a cold plasma jet generated by discharging a graphite needle naked electrode is led out by an insulating guide pipe and then is conveyed to a cutting region so as to effectively regulate and control a contact interface of the diamond tool and black metal. Active carbon particles in the jet are gathered on the contact interface of the diamond tool and the black metal; active particles adsorbed on the surface of the black metal can be used for preventing the diamond tool from being directly contacted with the black metal so as to inhibit chemical abrasion of the diamond tool. The cavitation effect of ultrasonic vibration forms a high pressure and a complicated thermodynamic effect in the cutting process is used for promoting the active particles in the cold plasma jet to be reacted with the surface of the newly-generated black metal to generate a substance, and the chemical affinity between the substance and a diamond is lower than that between the substance and the black metal; the effect of inhibiting the abrasion of the diamond tool is enhanced.

Description

technical field [0001] The invention relates to a method for cutting ferrous metal with a diamond tool, which belongs to the technical field of cutting technology of mechanical manufacturing. Background technique [0002] Diamond knives have the characteristics of high hardness and good thermal conductivity, and can be ground into ultra-precision cutting tools with extremely sharp edges. However, its high chemical affinity with Fe atoms makes it easy to graphitize when cutting ferrous metals, resulting in severe chemical wear, which is difficult to apply to ultra-precision cutting of ferrous metals. [0003] Using ultrasonic vibration to assist in cutting ferrous metals can greatly improve tool wear, but the vibration pattern produced by ultrasonic vibration limits the improvement of surface quality. The use of liquid nitrogen cooling can effectively inhibit the chemical wear of diamond, but it is difficult to achieve high precision due to cooling deformation of the workpie...

AI Technical Summary

Problems solved by technology

Ultrasonic vibration-assisted cutting of diamond tools combined with atmospheric pressure-cooled plasma jets to control the cutting area to inhibit chemical wear of diamond tools has not been reported so far.

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