摘要
通过对刮板输送机断裂的槽帮切取试样的化学成分、力学性能、金相组织和断口形貌的综合分析,对其断裂原因进行了深入探讨。结果表明,AlN析出相及严重的非金属夹杂物是导致槽帮断裂的主要原因。并提出了加强控制冶炼工艺来保证槽帮质量的建议,对实际生产具有一定的指导意义。
To study the cause of cracking of the side section of armoured face conveyors,the sample from the cracked side section were analyzed about its chemical composition,mechanical properties,metallographic microstructure and appearance of fracture. It was showed that AlN precipitate phase and severe non-metallic inclusion were the main factors to cause the fracture. In addition,suggestions to strengthen the control of smelting process to promote the metallurgical quality of the side section were proposed,which have some guiding significance for practical production.
出处
《矿山机械》
北大核心
2010年第23期15-17,共3页
Mining & Processing Equipment
关键词
刮板输送机
槽帮
断裂
非金属夹杂物
ALN
armoured face conveyor
side section
fracture
non-metallic inclusion
AlN
