论文部分内容阅读
乳化液(即常用的皂化油水溶液)在机械加工中应用极广。乳化液具有配制方便,润滑性、冷却性、防锈性均优的特点,但它有一个致命的弱点,即寿命不长,容易变质、发臭。在一般情况下,新配制的乳化液24小时内开始长菌,7～10天发臭变质,使用10天后含菌数可达5.0×10~9个/毫升。这些细菌不断吞食乳化液中的油分子,把高分子碳氢化合物分解成易于流动的短链的低分子碳氢化合物,使其粘度下降,失去油性,降低甚至丧失润滑性能。同时,由于菌类的分解作用,还产生有毒有害气体H_2S,污染环境,影响健康。在微生物繁殖中,不仅产生大量微生物的排
Emulsion (commonly used saponified oil solution) is widely used in machining. Emulsion with convenient preparation, lubrication, cooling, anti-rust are excellent characteristics, but it has a fatal weakness, that is, life expectancy is not easy to deterioration, smelly. Under normal circumstances, the newly formulated emulsion began to grow within 24 hours of bacteria, 7 to 10 days smelly deterioration, the use of bacteria after 10 days up to 5.0 × 10 ~ 9 / ml. These bacteria continue to swallow the oil molecules in the emulsion to decompose the high-molecular hydrocarbons into low-molecular-weight, short-chain hydrocarbons that are easy to flow, resulting in decreased viscosity, loss of oiliness and loss or even loss of lubricity. At the same time, due to the decomposition of fungi, but also produce toxic and harmful gases H_2S, pollute the environment, affecting health. In microbial breeding, not only produces a large number of microbial rows