A high-temperature molding sand water mist cooling control method

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 pollution to the environment, which is the advantage of sand casting; An important issue of concern, qualified molding sand is the basis for ensuring the quality of castings. [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 latter two control the amount of coal powder added and effective dust removal The system can be easily solved, while the first two parameters, the moisture content of the molding sand and the content of effective bentonite, and the abili...

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; in the production process, it is a common technical means to add water to high-temperature sand from unpacking sand shakeout, but its effect Poorness has been perplexing those skilled in the art, and its main reason is that it cannot solve the problem of timely and appropriate water addition to avoid the blockage of the delivery device

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