冶轧质量对钎钢性能与凿岩寿命的影响  

INFLUENCE OF METALLURGICAL QUALITY OF DRILL STEEL ON ITS PROPERTIES AND SERVICE LIFE

作　　者：顾太和 

机构地区：[1]贵阳钢厂钎钢研究所

出　　处：《钢铁》1989年第8期54-59,共6页Iron and Steel

摘　　要：本文论述了冶轧工艺对中空钢的性能及其制成钎杆凿岩寿命的影响。结合钎杆凿岩过程中的工作应力,分析了钎杆内外疲劳源点的产生、扩展及瞬间破断的情况。通过比较四种冶轧工艺的钎钢性能及其凿岩寿命,指出了缩孔夹杂、脱碳、晶粒粗化等冶金缺陷,是改善钎钢性能和提高钎杆凿岩寿命必须注意的问题。此外,提高中空钢锭、坯、材的内外表面质量是消除钎杆内外疲劳源点产生,避免钎杆早期断裂,稳定凿岩寿命的关键途径。This paper describes the effcts of melting and rollihg processes on the properties and its ser-vice life of rock drill steel. By comparing the characteristics and service lives of of rock drill steels produced by fourmelting and rolling processes, it is shown that porosity, inclusion, decarburization and coarsegrain are the major factors influencing ro:k drill service life. Besides, improvement of surfacequality is also important for increasing the service life of rock drill.

关 键 词：冶轧质量 钎钢 凿岩寿命 

分 类 号：TG142.5[一般工业技术—材料科学与工程]