Kawatra S Komar, Hess Mathew J
a Department of Metallurgical and Materials Engineering , Michigan Technological University , Houghton , MI , USA.
b Badger Mining Corp. , Berlin , WI , USA.
J Air Waste Manag Assoc. 1999 Apr;49(4):477-481. doi: 10.1080/10473289.1999.10463811.
Machining swarf consists of finely divided iron powder generated from machining of metal components. This material spontaneously heats due to rapid oxidation of the metal, which can lead to fires. While it is known that spontaneous heating of metal powders requires water as a reactant, there has been no quantitative information regarding how much moisture must be present for the material to spontaneously heat. The purpose of this paper is to determine the general heating characteristics of swarf and measure the effects moisture has on spontaneous heating. The moisture content and the effects of repeated water additions were studied. These experiments were conducted using a newly developed spontaneous heating test specifically designed for this purpose, as no suitable standard methods were useful. It was determined that spontaneous heating was most severe from 10 to 25% moisture by weight for the swarf sample studied.
加工切屑由金属部件加工产生的细碎铁粉组成。这种材料由于金属的快速氧化而自发升温，可能引发火灾。虽然已知金属粉末的自发升温需要水作为反应物，但对于材料自发升温必须存在多少水分尚无定量信息。本文的目的是确定切屑的一般加热特性，并测量水分对自发升温的影响。研究了水分含量以及重复加水的影响。由于没有合适的标准方法可用，这些实验是使用专门为此目的新开发的自发加热试验进行的。结果确定，对于所研究的切屑样品，当水分含量为10%至25%（重量）时，自发升温最为严重。
