Quenchant for medium carbon alloy steel abrasion-resistant material

Abstract

The invention relates to the technical field of heat treatment quenching, and discloses a quenchant for medium carbon alloy steel abrasion-resistant material. The quenchant comprises, by weight, 6% to 8% of sodium hydroxide, 6% to 8% of zinc chloride, 1% to 5% of sodium chloride, 0.01% to 0.03% of sulfonated castor oil, 0.01% to 0.05% of antifoaming agents, 0.1% to 0.5% of soap, 0.1% to 0.4% of preservative, 0.1% to 0.5% of antirust agents, 0.1% to 0.5% of lubricants, 0.1% to 0.5% of sterilizing agents and the balance water. The quenchant is reasonable in formula, and a quenched piece can have high hardness and is even in hardness. Sodium hydroxide and oxide skin on the surface of the quenched piece can interact with each other to generate hydrogen, so that the oxide skin can be rapidly peeled off, and the surface of the quenched piece can be in a shining silver color. Zinc chloride and sodium hydroxide react to generate strong zinc oxide, and the cooling speed of a high temperature area is higher than the cooling speed of water while the cooling speed of a low temperature area is lower than the cooling speed of water, so that deformation of the quenched piece is small, the quenched piece is not prone to cracking, and the surface of the quenched piece is shining.

Description

technical field [0001] The invention relates to the technical field of heat treatment and quenching, in particular to a medium-carbon alloy steel wear-resistant material quenching agent. Background technique [0002] Human civilization and the use of metal materials are inseparable. According to statistics, metal materials still account for more than 90% of the materials used in various machinery and equipment. Quenching is an important means to obtain the properties of metal materials, and the quenching medium is one of the key factors to obtain high quenching quality. Before the 20th century, animal and vegetable oils were basically used for quenching. Animal and vegetable oils contain more unsaturated fatty acids. Due to hydrolysis and oxidation, carboxylic acids, aldehydes, ketones and other substances with pungent odors are produced, which are easy to rancid and deteriorate, and have a bad impact on the environment. At the same time, due to the instability of the com...

AI Technical Summary

Problems solved by technology

However, although this type of water-soluble organic cooling medium does not produce serious pollution and fire hazards when it is used for quenching, the market price is still high, and the storage period of the original medium is limited. It can be used only when it is formulated into an aqueous solution in a certain proportion. In use, the organic matter solution will accelerate aging after being heated, and its cooling characteristics will change. If it is not replaced in time, the quality of the heat-treated product will be reduced, or even unqualified.