【摘 要】
：
Effect of several complex inoculants on mechanical properties, process-ability and sensibility of grey cast iron used in cylinder block were investigated. The e
【机 构】
：
School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471
论文部分内容阅读
Effect of several complex inoculants on mechanical properties, process-ability and sensibility of grey cast iron used in cylinder block were investigated. The experimental results showed that the grey cast iron treated with 60%FeSi75+40% RE complex inocuiants has tensile strength consistently at about 295 MPa along with good hardness and improved metallurgy quality. While the grey cast iron inoculated with 20%FeSi75+80%Sr compound inoculants has the best process-ability, the lowest cross-section sensibility and the least microhardness difference. The wear amount of the drill increases correspondingly with the increase of the microhardness difference of matrix structure, indicating the great effect of homogeneousness of matrix structure in the grey cast iron on the machinability of the grey cast iron.
其他文献
A special polyurethane coating designed for ductile iron pipe was developed. The effects of the ingredients on properties, such as viscosity, flow leveling, sol
经济的发展促进了电力电子技术的进步,而在发展的过程中也会遇到些许的问题,尤其是电网谐波造成的危害.文章将对煤矿生产中电网谐波的危害进行分析探讨,并结合分析提出相应的
主要就高中物理教学中多媒体计算机技术应用的重要性及原则进行阐述,然后就应用策略加以探究。
Mainly on high school physics teaching multimedia computer technology a
本文选用裂褶和云芝两种白腐真菌对老鹰山气煤进行微生物液化试验.首先对煤种进行氧化预处理,再在不同固体培养基进行微生物降解试验,结果发现云芝栓孔菌在SMA培养基中对硝酸
"两学一做"学习教育开展以来,我们坚持全覆盖、常态化、重创新、求实效,落实基础在"学"、关键在"做"、重点在"改"、目标在"促"的要求,党员干部"四个意识"明显增强、党内政治生活持续规范、党的基层组织建设不断加强、党员先锋模范作用有效发挥、生产经营指标逐月改善,应对"盐改"浪潮有条不紊,中盐各项改革事业稳中有进。实践证明,推进"两学一做"学习教育常态化制度化,是党中央坚持思想建党、组织建党、制度治
1 概述rn多绳摩擦式提升机具有安全性高,钢丝绳直径细,主导轮直径小,设备质量轻,耗电少,价格便宜等特点.更换摩擦式提升机提升钢丝绳是矿山大型设备的检修项目之一,其工序复
本文结合笔者多年工作实践、总结出了焊接裂纹的类型,并对产生原因进行了深入分析,阐述了防止措施.
深刻认识教学反思的意义,充分发挥它在教学管理和教师管理中的作用,是很有必要的。不仅每个教师都要懂得反思,学会反思,而且学校领导和教学管理人员,同样要认识教学反思的重
《盐业体制改革方案》的实施,为盐业企业的发展明确了目标、指明了方向、创造了条件.近年来,湖南轻工盐业集团有限公司(以下简称:集团公司)为应对盐业体制改革,在市场化转型