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爆轰裂解可膨胀石墨制备石墨微粉 闫鸿浩1,李晓杰1,孙贵磊1 (1.大连理工大学,工程力学系,工业装备结构分析国家重点实验室,辽宁,大连,116023) 摘要:在不改变石墨原始结构与成分的基础上,利用冲击波对可膨胀石墨进行爆轰,收集爆轰灰,进行X射线衍射,SEM的测量分析以及BET法测定比表面积.结果表明,可膨胀石墨经过爆轰后,得到了颗粒大小为1μm~10μm的石墨粉,比表面积由8.096 m2/g增大至47.48 m2/g,并且孔隙变得更为均匀,常规研磨设备是无法达到这种效果的.为石墨的细化提供了一种更为简便快捷而又节省能源的方法. 关键词:爆轰; 可膨胀石墨; X射线; BET; Detonation; Expandable graphite; X-ray; BET; [全文内容正在添加中] ......
at straightening stage during continuous casting using finite element method YU Hai-liang(喻海良)1, 2, LIU Xiang-hua(刘相华)1 1. State Key Laboratory of Rolling and Automation, Northeastern University... at the straightening stage during continuous casting was simulated by the explicit dynamic finite element method, and the stress distribution along the width direction of the slab and its change......
INVESTIGATION ON HOT DUCTILITY AND STRENGTH OF CONTINUOUS CASTING SLAB FOR AH32 STEEL G.Y. Li1,L.G. Ao1,X.F. Li1 (1.Technology Center, Anshan Iron and Steel Group Corporation,Anshan 114009, China) Abstract:By means of Gleeble-1500 testing machine, the simulation of continuous casting process for AH32 steel was carried out and hot ductility and strength were determined. The cracking sensitivity......
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J. Cent. South Univ. (2017) 24: 1063-1072 DOI: 10.1007/s11771-017-3509-6 Automatic three-dimensional reconstruction based on four-view stereo vision using checkerboard pattern XIONG Jie(熊杰)1, ZHONG... stereo vision using checkerboard pattern is presented. Mismatches easily exist in traditional binocular stereo matching due to the repeatable or similar features of binocular images. In order to reduce......
Direct-chilling casting of Mg alloy under electromagnetic and ultrasonic combined field CUI Jian-zhong(崔建忠), ZHANG Zhi-qiang(张志强), LE Qi-chi(乐启炽) Key Laboratory of Electromagnetic... on the edge of ingots when LFEC field is applied, while in the center of billets when field US is adopted. Combined the characteristics of LFEC and US fields, a new process for direct-chilling (DC) casting......
J. Cent. South Univ. (2018) 25: 1513-1523 DOI: https://doi.org/10.1007/s11771-018-3844-2 Radiation pattern analyses of circular aperture antenna to generate radio orbital angular momentum LIN Cheng... source to generate high power radio orbital angular momentum (OAM) in millimeter (mm) wave; however, the radiation pattern was not investigated. Theoretical derivation of radiation pattern of circular......
Effect of Ablation Casting on Microstructure and Casting Properties of A356 Aluminium Casting AlloyV. Bohlooli1,M. Shabani Mahalli1,S. M. A. Boutorabi21. Casting Research Center, School of Metallurgy... University of Science and Technology (IUST)摘 要:Recently the Ablation Casting Technology was invented as a new casting process to improve foundry products......
