Metal casting thermal shock sand cleaning device and sand cleaning method thereof

Abstract

The invention relates to the technical field of metal casting sand cleaning devices, and discloses a metal casting thermal shock sand cleaning device and a sand cleaning method thereof. The metal casting thermal shock sand cleaning device comprises a sand cleaning pool, a circulating water pump is fixedly installed at the left side of the top end of an inner cavity of the sand cleaning pool, and asand cleaning platform is fixedly installed at the right side of the top end of the inner cavity of the sand cleaning pool; and sieve holes are formed at the outer side face of the sand cleaning platform in a matrix shape. According to the metal casting thermal shock sand cleaning device, high-temperature marbles are bounced into the sand cleaning pool through a shot blasting device, after the high-temperature metal marbles meet water, heat is instantly released to vaporize and pressurize water, continuous explosive shock waves are generated, bonding of metal and sand is damaged by the shockwaves, accordingly, the sand falls off, and the sand cleaning time can be greatly shortened through thermal shock sand cleaning; and especially for castings with complex structures, by controlling theshot blasting frequency and the initial temperature of shots, the sand cleaning work of the castings can be efficiently and stably completed through thermal shock treatment, and therefore the beneficial effects that sand cleaning is easy, convenient and labor-saving are achieved.

Description

technical field [0001] The invention relates to the technical field of sand cleaning devices for metal castings, in particular to a thermal shock sand cleaning device for metal castings and a sand cleaning method thereof. Background technique [0002] The traditional sand cleaning processes for metal castings are mainly manual sand cleaning, hydraulic sand cleaning and water blasting sand cleaning. 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 environmen...

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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