Effect of Contamination On the Heat Transfer of Quench Oils

Modern quenching oils offer a wide range of capability and performance.  However, contamination of quench oils can markedly effect the performance.  This effect can result in fire, spotty work, cracking, distortion and potentially property or personnel damage.  This paper examines the effect of several common contaminates to the quenching performance of a premium mar-tempering type oil.  Contaminates examined included water, aging, temperature and soot.  The effect of each of these contaminates on the heat transfer coefficient of a mar-tempering oil is illustrated.