NdTeB氢粉碎处理工艺计算机控制系统.docVIP

XX大学 本科生毕业设计说明书（毕业论文） 题 目：NdTeB氢粉碎处理工艺计算机控制系统 学生姓名： 学 号： 专 业：自动化 班 级： 指导教师： NdTeB氢粉碎处理工艺计算机控制系统 摘 要 钕铁硼材料是已经产业化生产的磁性能最高、应用最广、发展最快的新一代永磁材料。市场对高性能钕铁硼材料的需求也越来越大。而此磁性材料的制备方法种类较多。其中钕铁硼氢破碎（HD）工艺是目前应用最广的方法。钕铁硼氢破碎（HD）工艺是上世纪末发展起来并可以代替传统的机械粗破碎方法的一项新技术。HD工艺利用NdTeB大块合金在吸收氢的反应过程中所产生的晶界断裂和穿晶断裂导致合金粉化的特性，得到一定粒度的粉体。 本课题的设计目标就是在氢粉碎过程中，通过优化控制各种工艺参数，让钕铁硼铸块在吸氢阶段吸氢充分、快捷，尽量缩短孕育期；在脱氢阶段脱氢迅速、彻底（实际上不可能完全脱净）。本文重点介绍了如何结合计算机技术和单片机技术控制氢粉碎过程中的众多独立变量和相关变量，尤其是如何实现吸氢过程的压力控制和脱氢过程的温度控制。让钕铁硼铸块或铸片吸氢和脱氢更加充分，使氢粉碎工艺处理后的钕铁硼产品性能更佳。 关键词：钕铁硼氢破碎工艺；单片机控制；自动控制；温度检测；压力检测 The computer control system of NdTeB hydrogen smashing processing craft Abstract The neodymium iron boron material is the new generation permanent-magnet material that has already industrial production magnetism performance highest, the application to be broadest, to develop the quickest. The market’s demand is also getting bigger and bigger to the high performance neodymium iron boron material. The magnetic materials preparation method types are many, but the neodymium iron boron hydrogen stave (HD) the craft applies the broadest method at present. The neodymium iron boron hydrogen stave (HD) the craft is new technology, which had developed and could replace traditional machinery thick stave method in the end of last century. The HD craft uses the NdTeB bulk alloy the intercrystalline cracking which and the transgranulation break produces in the absorption hydrogens reaction process causes the alloy pulverization the characteristic, obtains certain grain-size powder body. This topics project objective is that in the hydrogen smashing process controlling each technological parameter through the optimization, letting the neodymium iron boron ingot attract the hydrogen stage to attract the hydrogen fully, quickly, reducing the incubation period as far as possible and in the dehydrogenation stage dehydrogenation rapidly, thoroughly (in fact that impossible to escape completely). This article introduces with emphasis how to unify the com