传统上,热处理工业用的三种最常用淬火介质,其淬火烈度递增顺序分别是空气、油和水。许多高碳钢为了获得最佳的冶金性能(即力学性能,以下同一编者注),要求的淬火烈度往往比空气的高。虽然水是一种较剧烈的淬火介质,但是当用于高淬透性钢淬火时,会产生较大的变形和开裂。油分为快速、中速和慢速三种,通常用于淬火开裂敏感的钢。但是,作为一类介质,淬火油有许多本质性的缺点。其中包括:成本、淬火工 Traditionally, the three most commonly used quenchant media for the heat treatment industry have an increasing degree of quench intensity in the order of air, oil and water, respectively. Many high-carbon steels often require higher quenching intensities than air in order to obtain the best metallurgical properties (ie, mechanical properties, the same editor’s note below). Although water is a more intense quench medium, large deformations and cracking occur when quenched with high hardenability steel. Oil is divided into fast, medium and slow speed of three, commonly used for quenching and cracking sensitive steel. However, quenching oils have many essential disadvantages as a class of media. Including: Costs, quenching workers