Measurement method of graphite concentration in insulating oil during roll EDM texturing

Abstract

The invention provides a device and a method for measuring the concentration of graphite in insulating oil during a mill roll electro-discharge texturing process. The device comprises a measuring groove and two electrodes, wherein the measuring groove is internally provided with an insulating oil inlet header pipe; the insulating oil inlet header pipe is provided with a pump and two insulating oil pipes; the two insulating oil pipes are respectively connected to two insulating oil tanks; the insulating oil pipes are provided with control valves; the two electrodes are horizontally arranged in the parts, which are close to the bottom, of the measuring groove and are respectively connected with a power source. By virtue of the device for measuring the concentration of graphite, the content of graphite in the insulating oil tanks can be measured, so as to ensure that the content of graphite in the insulating oil tanks is always kept at a stable value, and the mill roll texturing effect and the mill roll texturing quality are improved.

Description

technical field [0001] The invention relates to roll texturing equipment, in particular to a method for measuring graphite concentration in insulating oil during roll electric spark texturing. Background technique [0002] With the rapid development of industries such as automobiles and home appliances, the demand for high-quality cold-rolled strip steel is increasing year by year. The user's requirements for the surface quality and performance of strip steel are constantly improving, which promotes the rapid development of roll surface texturing technology. The surface topography of cold-rolled strip steel is directly transmitted by the surface topography of the roll, which is a "attenuation copy" process. At present, in order to control and adjust the surface morphology of the finished strip steel, the work rolls of the cold rolling pass mill or skin pass mill basically use textured rolls. At the same time, in order to solve the problem of low roughness or strip steel adh...

AI Technical Summary

Problems solved by technology

[0004] The graphite concentration in the dielectric liquid needs to maintain a stable value in order to obtain the best roughening effect. When the graphite concentration is too high, the roughness of the textured roll surface is generally low; on the contrary, when the graphite concentration is too low, the textured roll The surface roughness of the roll is relatively high, which may even cause problems such as electrode vibration, contact between the roll and the electrode to scratch the roll surface, and impossibility of roughening.

In the general electric spark process, after a certain amount of graphite is added to an insulating oil tank, it is used continuously for about 24 to 32 hours. Under the process parameters, the surface roughness of the roughened rolls is different, which has an adverse effect on production

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