Suspension type waterborne grinding fluid preparation method

Abstract

The invention provides a suspension type waterborne grinding fluid preparation method. The preparation method comprises the step one of preparing sub-nanometer montmorillonite suspension liquid; the step two of evenly mixing a dispersing agent, a chelating agent, a lubricating agent, an antirust agent and water according to a proportion to obtain a mixture; the step three of evenly mixing the suspension fluid and the mixture according a proportion to obtain suspension type waterborne grinding liquid. According to the preparation method, the sub-nanometer montmorillonite is utilized as a suspension agent, the colloid dispersion and the lamella adsorption property of particles of the montmorillonite are utilized, and the suspension dispersion montmorillonite colloid has a suspension and adsorption effect on abrasive micro powder when the abrasive micro powder is used. Due to the stability of the montmorillonite colloid, the grinding fluid also has a good suspension effect even if the grinding fluid is diluted by 20 times or more. Thus, the effects that the abrasive micro powder is good in suspension, low in viscosity and high in machining precision are achieved, the grinding fluid has the advantages of being low in cost, strong in dilution capacity and easy to clean, and the raw materials of the grinding fluid are easy to obtain.

Description

technical field [0001] The invention belongs to the technical field of precision grinding and polishing, and in particular relates to a preparation method of a suspension-type aqueous grinding liquid. Background technique [0002] Grinding is a micro-cutting of the surface of the workpiece with free abrasive grains through the grinding tool, including physical and chemical comprehensive effects. It is one of the important means for workpiece finishing and precision machining. down to the nanometer level. In the grinding process of the workpiece, from the grinding device to the grinding process parameters, to the configuration of the grinding fluid, etc., all have a great impact on the surface quality of the workpiece, and the grinding fluid is the primary factor affecting the surface quality of the workpiece. [0003] There are two types of grinding fluid: water-based and oil-based. High-quality grinding liquid should have the following characteristics: (1) good suspension...

AI Technical Summary

Problems solved by technology

[0004] At present, there are still some problems in the grinding liquid developed in China, such as poor suspension and dispersion ability; low dilution ability; difficult to clean; high preparation cost and other problems.

Chinese Patent Application No. 02138718.4 patent name is "high suspension power water-soluble anti-rust grinding liquid, using bentonite as suspending agent, its 24h suspension rate is above 80%, but because the composition of bentonite is relatively complicated and its particle size is not strictly limited, If it is made into a grinding liquid with a small-sized abrasive, it will greatly affect its grinding effect and the quality of the surface of the processed workpiece, and its preparation method requires high temperature and vacuum, and the production cost is high.

Patent No. 201110143348.2 of the Chinese patent "Permanent Suspended Diamond Grinding Liquid" uses 80% to 90% alkanes as a suspending agent to prepare an oily grinding liquid, which is not easy to clean, and the waste liquid is difficult to recycle

The oil-based grinding liquid prepared by the Chinese patent "A Suspended Grinding Oil and Its Preparation Method" with the patent number 201510880294.6 also has problems such as high preparation cost, difficult cleaning, and weak dilution ability.