Water-soluble degradable quenching agent

Abstract

The invention discloses a water-soluble degradable quenching agent which consists of the following raw materials, by weight: 2-6 parts of alcohol, 4-8 parts of rhamnolipid, 6-10 parts of citric acid, 2-4 parts of butyl hydroxy anisole, 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 saccharose, 0.5-0.8 part of 2-thioketone-trihydroxymethyl benzothiazoline and 10-20 parts of shell powder. A preparation method for the water-soluble degradable quenching agent comprises the following steps of: firstly, dissolving citric acid, butyl hydroxy anisole and pine oil into alcohol to obtain a mixed solution; then, adding water into the mixed solution and transferring the mixed solution into a reaction kettle, cooling the mixed solution and adding rhamnolipid, rapeseed oil, cyclodextrin and saccharose into the mixed solution after reaction is ended, stirring for 10 minutes and standing to obtain a mixture; centrifuging the mixture, taking liquid supernatant after the mixture is centrifuged, adding acrylic acid, 2-thioketone-trihydroxymethyl benzothiazoline and shell powder into the mixture, uniformly stirring, heating, preserving the temperature, cooling, and sealing by use of paraffin oil, and thereby obtaining the water-soluble degradable quenching agent. The prepared quenching agent has relatively good water solubility, is ecologically degradable, and is small in environmental 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