高精度薄壁钢套类零件制造工艺

薄壁钢套类零件是机械制造中常碰到的一类难加工零件,由于其不同的功能用途和典型结构特点,其制造有一定难度,在实际生产过程中,经常出现加工制造后的零件尺寸精度、形状精度、形位精度达不到使用及设计要求。本文较系统地阐述了薄壁钢套类零件的典型制造工艺方法以及在制造过程中的变形分析和应对措施。     

门架式堆取料机在铜冶炼中的生产实践

针对铜冶炼工艺的特点,从门架式堆取料机对前后工序衔接、结构、原理出发,介绍了其在熔炼炉系统和吹炼炉系统中的应用情况。经过试生产期的生产实践证明,门架式堆取料机具有场地利用率高、取料量大,自动化程度高和安全环保等优点。     

Effect of waste serpentine on the properties of basic insulating refractories

Basic insulating refractories were fabricated by the pressing route using dead-burned magnesia, pure calcined alumina, expanded perlite, and calcined waste serpentine as starting raw materials in four compositions from F1 to F4. Periclase and forsterite were major phases in F1 and F2 compositions, while spinel was also detected in the XRD patterns of F3 and F4 samples. Quantitative phase analysis showed that F4 sample sintered at 1450?°C has the highest forsterite content among all other samples. On the other hand, it has lower thermal conductivity compared to F1 to F3, and even lower than aluminosilicate IFBs with the same bulk density. It is concluded that forsterite is a highly insulating material, compared to periclase, corundum, periclase-spinel, aluminosilicates, such as mullite, etc.     

正确选用热力管网保温材料的几个问题

介绍了做好热力管网保温应具备的有关知识和数据，以及宝钢蒸汽主干管网在采用四种保温材料下的经济保温层厚度和相对的节能效益，认为目前适于宝钢公司热源温度在６００℃以下较好的保温材料有新型矿渣棉制品和泡沫石棉板。     

钢包钢水保温覆盖剂的开发

研制了钢包钢水新型保温覆盖剂，主要成分为（%）；15-25C，20-35SiO2,10-20Al2O3,2-5Fe2O3,15-25CaO,2-5MgO，新覆盖剂铺展性与保温性能良好。经转炉钢水160t钢包生产使用，统计数据表明，镇静15min后钢水降温速度由原碳化稻壳覆盖剂1.33℃/min降低到0.93℃/min。     

转炉出钢口套整体袖砖工艺技术开发

介绍了天津天铁冶金集团有限公司炼钢厂转炉出钢口袖砖工艺的开发过程，主要工艺参数的制定，实践证明，该工艺的应用取得了良好的使用效果。     

D-10D磨煤机润滑油系统加装冷却器

针对鄂州发电有限责任公司磨煤机夏季轴瓦温度高，容易诱发烧瓦问题，进行深入分析，提出了多种解决方案，对各方案的可操作性及利弊进行了对比，选出了最佳方案并进行了实验，取得了明显的效果。     

新型并条胶辊套筒的特点及运用

为了解决常规并条胶辊套筒存在的易发热、易漏油，芯轴易弯曲磨损以及保养、能耗等问题，介绍了新型免加油并条胶辊套筒的性能特点并以实际生产数据进行对比；说明实际使用该新型并条胶辊套筒综合效果好，具有省工省时、降低消耗、质量稳定、使用寿命长、总投资少等优点。     

Insulating safety analysis of the hot-line sweeping robot

This paper presents a method of calculating the insulating safety distances for hot-line working robots at high voltage when dielectric is adulterated with conducts. Also, finite element method is adopted to calculate the electric field strength to find whether it is beyond the critical. The above methods have been applied to analyze the insulating safety of the robot for hot-line sweeping post insulators in a 220 KV substation. They have also been testified by experimentations.     

无键联接传动的特点及锥面弹性衬套设计和应用

无键联接在特殊行业和工况中是键联接传递动力和运动的有力补充,介绍了工程上应用的圆弧三边形型面联接、弹性环无键联接、圆柱面过盈联接等几种无键联接传动方式及其工作原理,并分析了各自的性能特点和应用情况。针对无键联接传动的特点、特殊行业和工况的应用实际,设计了锥面弹性衬套无键联接传动结构并介绍了其在工程中的实际应用。