Kawatra S Komar, Hess Mathew J
a Department of Metallurgical and Materials Engineering , Michigan Technological University , Houghton , MI , USA.
J Air Waste Manag Assoc. 1999 May;49(5):588-593. doi: 10.1080/10473289.1999.10463826.
Machining swarf is a finely divided metal powder that is prone to spontaneous heating and, in some cases, spontaneous combustion. The fine particle size, large amount of particle surface area, and the presence of moisture all promote rapid oxidation. This hazard dramatically increases disposal costs for swarf and interferes with recycling efforts. A potential method for minimizing spontaneous heating and facilitating recycling of the swarf is to spray a fluid on the material that coats the particles and creates a barrier between the metal and oxygen. Surface coatings could be tested for their effects on the spontaneous heating potential of swarf by treating a sample of swarf with a fluid that would coat the particles, then monitoring its heating behavior. This paper describes the results of applying corrosion inhibitors and machining fluids to the swarf, and monitoring the spontaneous heating behavior using a testing method developed specifically for this purpose. The effects of different types of surfactants and the effects of surfactant concentration on the spontaneous heating of swarf are discussed.
加工切屑是一种细分的金属粉末，容易自燃，在某些情况下还会自燃。细粒度、大量的颗粒表面积以及水分的存在都促进了快速氧化。这种危险极大地增加了切屑的处置成本，并干扰了回收工作。一种将自燃风险降至最低并促进切屑回收的潜在方法是在材料上喷洒一种流体，该流体包裹颗粒并在金属和氧气之间形成屏障。可以通过用一种能包裹颗粒的流体处理切屑样品，然后监测其发热行为，来测试表面涂层对切屑自燃可能性的影响。本文描述了将缓蚀剂和加工液应用于切屑，并使用专门为此目的开发的测试方法监测自燃行为的结果。讨论了不同类型表面活性剂的影响以及表面活性剂浓度对切屑自燃的影响。
