Water-soluble degradable quenching medium

Abstract

The invention discloses a water-soluble degradable quenching medium. The water-soluble degradable quenching medium is composed of, by weight, 2-6 parts of methyl alcohol, 4-8 parts of rhamnolipid, 6-10 parts of acetic acid, 2-4 parts of butylated hydroxyanisole, 8-12 parts of rapeseed oil, 11-17 parts of cyclodextrin, 6-10 parts of pine oil, 15-25 parts of acrylic acid, 7-8 parts of cane sugar, 0.5-0.8 part of 2-thioketone-tris(hydroxymethyl) benzisothiazolin and 10-20 parts of shell powder. Firstly, the acetic acid, the butylated hydroxyanisole and the pine oil are dissolved in the methyl alcohol, and a mixed solution is obtained; then, water is added, and the mixture is transferred into a reaction kettle; after the reaction ends, cooling is conducted, the rhamnolipid, the rapeseed oil, the cyclodextrin and the cane sugar are added, and the mixture stands after being stirred for 10 min; then, centrifugation is conducted, supernate is taken after centrifugation, the acrylic acid, the 2-thioketone-tris(hydroxymethyl) benzisothiazolin and the shell powder are added, heating, heat preservation and cooling are conducted after the mixture is stirred to be uniform, sealing is conducted through paraffin, and the water-soluble degradable quenching medium is obtained. The prepared quenching medium has good water solubility, is ecologically degradable and is small in environment pollution.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a water-soluble degradable quenching agent. Background technique [0002] Quenching medium in heat treatment production directly affects the performance of parts after quenching, and is a key factor affecting product quality. Commonly used quenching media mainly include water, aqueous solution, oil, etc. Among them, quenching oil is very polluting to the environment, and it is easy to cause fire during quenching, so it is difficult to meet the requirements of safety and environmental protection. [0003] Water is a quenching medium with strong cooling capacity. It has wide sources, low price, stable composition and not easy to deteriorate. The disadvantage is that the workpiece is prone to "soft spots" during the cooling process, and in the martensitic transformation temperature zone, due to too fast cooling, it is easy to generate a large internal stress, resulting in deforma...

AI Technical Summary

Problems solved by technology

The disadvantage is that the workpiece is prone to "soft spots" during the cooling process, and in the martensitic transformation temperature zone, due to too fast cooling, it is easy to generate a large internal stress, resulting in deformation or even cracking of the workpiece

Part of the water-based quenching agent adds an appropriate amount of salt and alkali to the water, so that after the high-temperature workpiece is immersed in the cooling medium, crystals of salt and alkali can be precipitated in the steam film stage and burst immediately, thereby destroying the steam film and shattering the surface oxidation of the workpiece. Quenching agent can improve the cooling capacity of the medium in the high temperature area, but this kind of quenching agent is highly corrosive and affects the cleanliness of the production environment