摘要
根据国家历次对钎具质量抽查的结果,阐述了我国小钎头和中空六角形钎杆存在的质量问题,分析了出现问题的原因,并提出了改进建议。
ccording to the random sampling examination of all previous times,conducted by China national departments concerned,the author discusses the problems on the quality of smallsize bits and hollow hexagonal drill steel,analyzes their causes and puts forward some recommendations of their improvement.
出处
《矿业研究与开发》
CAS
1998年第4期34-36,共3页
Mining Research and Development
关键词
钎头
钎杆
质量检验
合格率
凿岩钎具
it, Drill steel, Qualtiy checkout, Qualification rate