Quenching Lubricants media during the heat treatment

Quenching Lubricants media is imperative to solidifying since it is a compelling of the hardness of the material 

Quenching Lubricants media: 

Water: 

water is genuinely great Quenching Lubricants medium.it is cheap, readily accessible, effectively put away nontoxic nonflammable smokeless and simple to filer and siphon however with water extinguish the arrangement of air pockets may cause weaknesses in the metal. Agitation is suggested with the utilization of water quench.Still different issues with water quench its oxidizing nature, its destructiveness and the inclination to inordinate bending and splitting in spite of the fact that this awful property for plain carbon steels. 

Saline solution (saltwater) : Brine is a more extreme extinguish medium than water.Unfortunately, it will in general quicken consumption issues except if totally removed.Sodium or potassium hydroxide can be utilized when serious Quenching Lubricants is desired and one wishes to acquire great hardness in low carbon steels 

Oil: When the more slow cooling rate is wanted oil extinguishes can be employed.The more slow cooling through the ms to mf temperature range prompts a milder temperature slope and a decreased likelihood of cracking.Problems related to quenchants incorporate water contamination, smoke and fire hazards.in expansion extinguish oils will, in general, be fairly costly. 

Air: Low composite steels in light areas and high combination steels might be successfully solidified by methods for compacted air or still air. The points of interest of utilizing air are that contortion is irrelevant and that the steel can without much of a stretch be straightened during cooling process.One disadvantage here is that the surface might be oxidized the cooling.