A washing device for casting water-soluble salt core

Abstract

The invention discloses a washing device of a casting water-soluble salt core. The washing device comprises a circulating water tank used for providing a washing water source and recovering washing water, a pressurizing water pump used for pressurizing the washing water source and an air compressor pump used for providing compressed air, wherein a washing and water spraying pipe is arranged above the circulating water tank, and a plurality of washing nozzles are arranged at the water flow downstream end of the washing and water spraying pipe; the water inlet end of the pressurizing water pump is connected with the circulating water tank by virtue of a water inlet pipe, and the water outlet end of the pressurizing water pump is connected with the washing and water spraying pipe by virtue of a water outlet pipe; the air inlet end of the air compressor pump is communicated with atmosphere, and the air outlet end of the air compressor pump is connected with the water flow upstream end of the washing and water spraying pipe. The washing device of the casting water-soluble salt core, disclosed by the invention, can be used for improving the washing operation efficiency of the water-soluble salt core, reducing the residual rate of the water-soluble salt core in an inner cooling oil path, and meeting the actual use requirement.

Description

technical field [0001] The invention relates to a flushing device for casting a water-soluble salt core, which belongs to the technical field of salt core aluminum piston casting. Background technique [0002] Since the aluminum piston is subjected to large mechanical and thermal loads for a long time during work, in order to prevent cracks on the top of the aluminum piston, its temperature should not exceed 350°C to 375°C; in addition, in order to maintain good lubrication and prevent carbon deposits, the ring groove should not Rapid wear and tear, the temperature of the first ring groove should be controlled below 200 ° C ~ 220 ° C; for this reason, it is necessary to cast an austenitic cast iron wear-resistant insert at the first or first and second ring grooves of the aluminum piston. The inner cooling oil channel is processed with a water-soluble salt core near the top of the piston against the ring, and the water-soluble salt core filled in the inner cooling oil channe...

AI Technical Summary

Problems solved by technology

In the prior art, the method of flushing the water-soluble salt core in the internal cooling oil passage of the formed aluminum piston is usually to directly connect tap water to the oil passage hole for flushing, which has defects such as long working time and incomplete flushing of the water-soluble salt core. The attached residual water-soluble salt core has a great corrosion effect on the piston, and cannot form a smooth internal cooling oil passage

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