A method for cleaning the surface of electrical components and precision hydraulic components with dry ice

Abstract

The invention belongs to the technical field of precise instrument equipment; and in order to solve the problems of easy rusting of equipment, easy damage of equipment, reduction of assembly precision of equipment and lower safety in a traditional method of cleaning a surface of an electric device or a precise instrument, the invention provides a method for cleaning surfaces of an electric device and a precise hydraulic part by dry ice. Solid spherical dry ice particles with diameters of 2-4 mm are filled in a dry ice cleaning machine; the dry ice cleaning machine is connected with 220 V of voltage and pressure not smaller than 0.8 MPA; after a switch is opened, the pressure of an air compressor is set as 0.4-1 MPa, and the flow is set as 0.5-3.5 m3 / m; a distance from a gun nozzle to a surface to be cleaned is 25 mm; an angle between the nozzle and the cleaned surface is 45 degrees; a button of a spraying gun is pressed for spraying the surface of an object to be cleaned; the ice outlet quantity is 15-50 kg / h; the spraying pressure is 7-8 bar; and the lasting time is 20 s. Compared with a common paint and rust removing technology, the dry ice cleaning has such advantages as environmental protection, economy, high efficiency, long service life and safety.

Description

technical field [0001] The invention belongs to the technical field of precision instruments and equipment, and in particular relates to a method for cleaning the surfaces of electrical components and precision hydraulic components with dry ice. Background technique [0002] Common cleaning methods are high-pressure water cleaning and sandblasting cleaning, etc. The cleaning medium is water, sand, walnut shells, plastics and other abrasive media. The assembly accuracy and safety performance are relatively low. However, dry ice blasting has the characteristics of environmental protection, economy, long service life, safety and efficiency, and wide use. [0003] The invention patent with the application number 201310364061.1 discloses a method for cleaning metal molds, which includes the following steps: (1) Select a round bar-shaped dry ice with a length of 3~6mm and a diameter of 2.5~3.5mm, and add the dry ice to the dry ice cleaning machine (2) Put the nozzle of the dry i...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the existing method for cleaning the surface of electrical components or precision instruments is easy to rust the equipment, easily damage the equipment, reduce the assembly accuracy of the equipment, and have low safety performance, the invention provides a dry ice cleaning method for cleaning electrical components and precision instruments. Method for the surface of hydraulic parts

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