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一、对选煤设备损坏原因的调查、统计和分析苏联固体可燃矿物精选研究院为此进行调查的项目有:设备用材的特性,造成磨蚀损坏的种类,设备的额定寿命和实际寿命,腐蚀介质的特性,与腐蚀介质接触面的防护方法。对选煤厂用材统计表明,实际上所有选煤设备都是用CT.3钢制作,但它没抗腐蚀性能,同一设备在相同工作条件下可能受到以下几种腐蚀:点腐蚀、晶向腐蚀和机械应力蠕变。
I. Investigation, Statistics and Analysis of the Causes of Damage to Coal Preparation Equipment The projects investigated by the Institute for the Selection of Solid Flammable Minerals in the Soviet Union include the following: the characteristics of equipment timber, the types of damage caused by abrasion, the equipment’s rated life and actual life, corrosion The characteristics of the medium, the method of contact with the corrosive medium. The statistics of the coal preparation plant show that virtually all coal preparation equipment is made of CT.3 steel, but it has no corrosion resistance. The same equipment may suffer from the following kinds of corrosion under the same working conditions: pitting corrosion, crystal corrosion And mechanical stress creep.