A Mechano-rheological Polishing Method for Fixed-point Release of Chemical Action

Abstract

Provided is a force rheological polishing method with the chemical action released at a fixed point. A wrapping body containing chemical polishing liquid is added into non-Newtonian fluid polishing liquid with a shearing thickening effect; in the polishing process, along with increasing of the relative movement speed of the polishing liquid and a workpiece, the shearing force caused by the workpiece on the polishing liquid is ceaselessly increased, the polishing liquid generates a rheological phenomenon, and viscosity is fast increased; thus, the acting force of the polishing liquid on the wrapping body dispersed in the polishing liquid is relatively enhanced, the wrapping body is extruded and broken on a face making contact the workpiece, and chemical substances in the wrapping body are released to a polished surface of the workpiece; and the chemical substances bear high speed and high pressure effects, a chemical reaction fast happens with the surface of the workpiece, chemical reactants formed on the surface of the workpiece are efficiently removed by abrasive particles in the polishing liquid, no mechanical damage is generated on a workpiece body material, and therefore the polishing efficiency and quality of the workpiece material are improved. The force rheological polishing method with the chemical action released at the fixed point is efficient, low in cost and environment-friendly.

Description

technical field [0001] The invention belongs to precision ultra-precision machining technology, and relates to a high-efficiency and high-quality force-rheological polishing method based on the shear thickening effect of non-Newtonian fluid. Background technique [0002] In recent years, in many application fields of science and technology, hard and brittle or soft and brittle difficult-to-process materials such as special optical glass, single crystal silicon, sapphire, lithium tantalate and various functional ceramics have appeared; The surface shape is also increasingly extended to curved surfaces and even complex curved surfaces, which further increases the difficulty of ultra-precision machining. [0003] Polishing processing technology has always been the main method of ultra-precision processing technology. Its purpose is to reduce the roughness of the workpiece surface and remove the damaged layer generated during processing. It can be used to process complex curved ...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid adverse effects on the rheological properties of the STP polishing base liquid by directly adding chemical substances, reduce the chemical corrosion of the equipment by the chemical components of the polishing liquid, and overcome the high processing cost of the existing chemical polishing liquid, the present invention provides a high-efficiency, low-cost Cost-effective and environmentally friendly mechano-rheological polishing method for site-release chemistry

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