Water-based magneto-rheological polishing liquid for optical processing and preparation method thereof

Abstract

The invention relates to a water-based magnetorheological polishing solution for optical manufacture, which is formed by the following volume components, water-based remixed carrier liquid 25%-75% and additive component 25%-75%, wherein the additive component is dispensed by the following volume percentage, carbonyl iron powder 80%-90%, nanometer iron powder 4%-10% and polishing powder 4%-10%, the water-based remixed carrier liquid which is measured according to volume percentage comprises deionized water 85%-90%, dispersing agent 3%-5%, wetting agent 2%-5% and thixotropic agent 3%-5%, the method for preparing comprises the following steps: mixing deionized water and thixotropic agent, stirring in indoor temperature for 1-2 hours, and adding dispersing agent, stirring in indoor temperature for 0.5-1 hour, and then adding wetting agent, stirring in indoor temperature for 0.5-1 hour, getting water-based remixed carrier liquid, mixing additive component and water-based remixed carrier liquid, adding into a ball-milling tank, adding into a steel ball according to mass ratio which is 1:10, grinding for 3-5 hours in the speed which is 20-30r / m, separating out a steel ball, and getting products. The polishing solution of the invention has the advantages of excellent stability, high rheological property, excellent oxidation resistance property and simple and environmental-friendly preparation technology.

Description

technical field The invention belongs to the field of processing and manufacturing of precision optical parts, and in particular relates to a water-based magnetorheological polishing liquid for manufacturing optical parts and a preparation method thereof. Background technique Magnetorheological polishing technology is a deterministic advanced optical manufacturing technology. It uses the solid-liquid phase transient characteristics of magnetorheological fluid under high-intensity gradient magnetic field, and the shear yield stress and Due to the influence of local shape, a "flexible polishing mold" that can match the processed surface is formed, so as to realize the deterministic, high-precision and quantitative modification and polishing of optical components, while ensuring the surface processing quality of sub-nanometer roughness, tiny Workpiece subsurface damage and high machining efficiency. To achieve high-precision and high-efficiency magnetorheological polishing, on...

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Problems solved by technology

However, the use of water as the base carrier liquid has the following problems: 1. Poor compatibility with the magnetically sensitive particles, the magnetically sensitive particles are easy to settle and agglomerate, making the coagulation stability and sedimentation stability of the magnetorheological polishing fluid worse; 2. Sensitive particles are easily oxidized, resulting in reduced shear stress and poor rheology

This method is complicated in process and high in production cost. It will be very expensive for the polishing of optical parts that require a large amount of magnetorheological polishing fluid.

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