A thermal shock sand cleaning device for metal castings and a sand cleaning method thereof

Abstract

The invention relates to the technical field of sand cleaning devices for metal castings, and discloses a thermal shock sand cleaning device for metal castings and a sand cleaning method thereof. A sand cleaning platform is fixedly installed on the right side of the top of the inner cavity of the sand cleaning tank, and the outer surface of the sand cleaning platform is provided with sieve holes in a matrix. The thermal shock sand cleaning device for metal castings blasts high-temperature marbles into the interior of the sand cleaning tank through the shot blasting device. After the high-temperature metal marbles encounter water, they release heat instantly to vaporize and pressurize the water, and generate continuous explosion shock waves, shock waves Destroy the bond between metal and sand so that the sand will fall off. Sand cleaning by thermal shock can greatly shorten the sand cleaning time, especially for castings with complex structures. By controlling the frequency of shot blasting and the initial temperature of the shot, thermal shock treatment can be efficient. The sand cleaning work of castings can be completed stably, thus realizing the advantages of simple and labor-saving sand cleaning.

Description

Technical field [0001] The present invention relates to the technical field of metal casting sanding devices, and in particular, a thermal impact sanding device and a sanding method thereof thereof. Background technique [0002] The conventional sanding process of metal castings is mainly hand-made, hydraulic sand and water-proof sand. Handmade Sand Method will produce a large amount of dust in the sanding process of castings, the environment is bad, and there is a special ventilation cleaning facility in the workshop, and when the complex castings are hand-cleared, there is low working efficiency, and the labor intensity is large. Waiting for the quality of the sand, the hydraulic sanding method is sanding through the impact of water, avoiding the production of a large amount of dust during the sand, improves the working environment, but the hydraulic sanding system is huge, the area is large, the need Waste water treatment is also required to cool to low temperatures to make th...

AI Technical Summary

Problems solved by technology

The manual sand cleaning method will generate a lot of dust during the sand cleaning process of castings, and the environment is harsh. Special ventilation and cleaning facilities need to be equipped in the workshop. Moreover, when manual sand cleaning is performed on complex castings, there are low work efficiency, high labor intensity, Disadvantages such as poor sand cleaning quality; the hydraulic sand cleaning method uses the impact force of water to clean sand, avoiding the generation of a large amount of dust in the sand cleaning process, and improving the working environment, but the hydraulic sand cleaning system is huge and occupies a large area, requiring Sewage treatment also requires castings to be cooled to a low temperature before sand cleaning can be performed, prolonging the production cycle

[0003] The water blast sand cleaning method needs to put the metal castings and mud cores into water when they have a high temperature, and rely on the heat of the castings to vaporize and pressurize the explosive force to clean the sand, but it is necessary to strictly control the casting temperature and water temperature. During the water blasting process , it is easy to cause poor sand cleaning effect due to poor temperature control, reduce the fatigue strength of castings, and even cause defects such as cracks in castings

[0004] At the same time, using the existing water blasting sand cleaning method, it is necessary to put multiple castings into the sand cleaning tank and vaporize the water inside the sand cleaning tank, and when the castings are put into the sand cleaning tank, a crane is used Take the castings and put them into the sand cleaning tank, and there is no equipment for ejecting high-temperature castings, which consumes a lot of manpower and material resources during use, which cannot meet the requirements of the use.

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