Water mist cooling control method of high-temperature molding sand

Abstract

The invention discloses a water mist cooling control method of high-temperature molding sand. A stroke switch SQ is arranged on a hoisting device on a vibration shakeout machine to be used for being in contact with a hoisting box to trigger, an arc-shaped stainless steel semi-closed cover is made on a conveyor belt to cover the conveyor belt, a plurality of high-pressure atomizing water injectionnozzles are installed on the central axis of the semi-closed stainless steel cover at equal intervals, each high-pressure atomizing water injection nozzle is controlled by a solenoid valve, the time taken form the hoisting box to vibrate sand falling to high temperature sand spreading over the conveyor belt is denoted as t1, when a vibration sand falling device is opened and the hoisting box is started, hoisting box equipment moves to be in contact with the stroke switch to enable the stroke switch close, the solenoid valve is opened again after delaying t1, thus the high-pressure atomizing water injection nozzles work, after working the time t2, the solenoid valve is closed, after waiting for a period of time, that is t3, thehoisting box equipment moves to be in contact with the travel switch again to enable the stroke switch close, and the steps are cycled and repeated in this way.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a high-temperature molding sand water mist cooling control method. Background technique [0002] The casting production line is usually continuous production, and the molding sand is recycled after being processed; this not only reduces the production cost but also reduces the environmental pollution, which is the advantage of sand casting; professional and technical personnel engaged in casting are well aware of the impact of molding sand on the quality of castings It is no exaggeration to say that there is no qualified casting without qualified molding sand. Qualified molding sand is the basis for ensuring the quality of castings; without the foundation, everything else is zero! [0003] Several important parameters affecting the quality of molding sand are: (1) moisture, (2) effective bentonite content, (3) effective coal powder content, (4) dead ash content; the l...

AI Technical Summary

Problems solved by technology

[0004] Baking the sand mold during high-temperature molten iron molding will increase the sand temperature, and the local sand temperature can reach 500-600 degrees, or even higher; while the molding sand temperature for the finished product must be controlled below 50 degrees to ensure the stability of the molding sand, which is determined by the temperature of the reused sand. Although there are many ways to reduce the temperature of recycled sand, the most effective method is to add water to cool down; this is the consensus of experts. In the production process, it is everyone’s responsibility to add water to the high-temperature sand during the production process. It is a good method that everyone knows, but it cannot be effectively implemented. The main reason is that it cannot solve the problem of timely and appropriate water addition to avoid the blockage of the conveying device. This problem has always plagued our foundry manufacturers.

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