Wear-resistant material workpiece quenching medium

Abstract

The invention discloses a wear-resistant material workpiece quenching medium, relating to the technical field of heat treatment quenching. The wear-resistant material workpiece quenching medium comprises following raw materials based on weight percentage: 6-12% of sodium hydroxide, 6-8% of zinc chloride, 0.01-0.03% of sulfonated castor oil, 1-5% of polyamide polyethylene glycol, 2-5% of acrylic acid, 5-10% of acrylic ester, 0.1-2% of additive and the balance of water. In the wear-resistant material workpiece quenching medium, formula is reasonable, a quenching piece can achieve high and uniform hardness and can be directly subjected to quenching, residual forging heat quenching and induced spraying quenching, and the medium is particularly applicable for quenching of a large workpiece; the sodium hydroxide used in the invention can mutually react with oxide skin on the surface of the quenching piece to generate oxygen, so that the oxide skin is rapidly stripped off, and the surface of the quenching piece shows shiny silver ; the zinc chloride and the sodium hydroxide react to generate strong zinc oxide, the scabbing speed of a high-temperature region is faster than that of water, the cooling speed of a low-temperature region is slower than that of the water, the quenching piece is slightly deformed, is not easy to crack and has a shiny surface.

Description

technical field [0001] The invention relates to the technical field of heat treatment and quenching, in particular to a quenching agent for wear-resistant materials and workpieces. 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 component...

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.

At present, there is no uniform quenching agent for the quenching treatment of wear-resistant material workpieces in the market. The quenching treatment process of wear-resistant materials is an important part of the toughness of the workpiece. It is necessary to develop wear-resistant material quenching agents.