Oily water-soluble quenching liquid and preparation method thereof

Abstract

The invention discloses an oily water-soluble quenching liquid and a preparation method thereof. The liquid comprises the following components of, in percentage by mass, 5%-15% of polyvinylpyrrolidone, 5%-10% of complex amine, 1%-5% of polycarboxylic acid, 1%-5% of boric acid, 0%-2% of defoamer, 0%-2% of corrosion inhibitor, and the balance deionized water. The method comprises the following stepsthat firstly, the complex amine is dissolved, the polycarboxylic acid is added, the mixture is uniformly mixed at the temperature of 40-70 DEG C, the corrosion inhibitor is continuously added, then the polyvinylpyrrolidone and the defoamer are sequentially added, and uniform stirring is conducted. According to the oily water-soluble quenching liquid, the application range is wider, different cooling speeds can be obtained by adjusting the concentration, the oily water-soluble quenching liquid has smaller deformation compared with other polymers, and can be used for quenching and cooling a high hardenability material or a small size alloy material, so that mineral oil for quenching is replaced, fire hazards are eliminated, and safety is higher.

Description

technical field [0001] The invention belongs to the technical field of heat treatment cooling medium, and in particular relates to an oil-like water-soluble quenching liquid and a preparation method thereof. Background technique [0002] For quenching and cooling of high hardenability materials or alloy materials with small size, water quenching is prone to quenching cracks, which cannot meet the requirements of industrial production, so mineral oil is still used as the quenching medium. At present, mineral oil accounts for about 40% of heat treatment cooling. The advantages of mineral oil are good process adaptability, stable product quality, and no quenching cracks or brittle fractures; the disadvantage is that the environmental pollution is relatively serious, which is easy to cause fire. It is easy to pollute the environment during the process, and the fume environment is not conducive to the health of workers. The specific performance is as follows: (1) The oily fume p...

AI Technical Summary

Problems solved by technology

[0002] For quenching and cooling of high hardenability materials or alloy materials with small size, water quenching is prone to quenching cracks, which cannot meet the requirements of industrial production, so mineral oil is still used as the quenching medium

At present, mineral oil accounts for about 40% of heat treatment cooling. The advantages of mineral oil are good process adaptability, stable product quality, and no quenching cracks or brittle fractures; the disadvantage is that the environmental pollution is relatively serious, which is easy to cause fire. The process is easy to pollute the environment, and the fume environment is not conducive to the health of workers

The specific performance is as follows: (1) The oily fume produced at the entrance of the quenching and lead pot will cause poor air quality at the operation site and affect the physical and mental health of the operators. Even if the method of electrostatic oil fume removal is used, it is difficult to meet the air emission requirements; (2) The covering agent at the entrance of the lead pot is polluted by the quenching oil brought in from the surface of the steel wire, and the waste slag generated is difficult to handle. The thinner the steel wire, the more ends, and the faster the speed, the more waste slag will be generated, which is difficult to handle under the current environmental protection pressure.

(3) When the steel wire at about 900°C is quenched in oil, it is easy to produce open flames. When the cooling capacity of the quenching oil is insufficient, it is easy to cause a fire, which can damage equipment and burn the factory building, and cause casualties; There is a fire hazard when the cover agent at the entrance of the lead pot is contaminated with quenching oil

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