【作者】 张宇；

【导师】 徐志祥； 赵超；

【作者基本信息】 大连理工大学 ， 机械工程（专业学位）， 2016， 硕士

【摘要】 铝钒合金是制备含钒钛合金及金属钒的主要原材料,随着我国航空航天材料的发展,高品质的铝钒合金需求将会大大增加,而高密度金属夹杂是铝钒合金质量缺陷最重要的影响因素。本文以X射线检测设备在铝钒合金质量检测实际应用需求为基础,针对在铝钒合金生产过程中存在Pb、W等高密度金属物质致命缺陷对产品污染的可能性,分析了X射线高密度金属夹杂检测设备的基本原理,对X射线高压系统、图像接收系统、运动控制系统及应用软件进行整体设计。首先对X射线的高压控制器、高压发射管等进行研究分析,选择了适合铝钒合金特性的高压发射和控制装置。针对铝钒合金和X射线的特性选择了合理的射线接收单元,同时设计了信号的成像和分析系统。线阵式探测器进行穿透后射线的吸收,探测器内闪烁体转换为可见光,由矩阵式光电二级管阵列将可见光信号转换为电信号,经过A/D转换形成数字型号,由通讯卡连接至上位机进行处理。介于实际应用中的设备控制功能要求,明确控制系统硬件框架,以PLC为控制核心方式,通过以太网将PLC控制器、HMI(Human Machine Interface)人机界面、X射线信号发射处理系统相互连接达到安全稳定的工作要求。最终实现系统在检测过程中可对产品自动检测,当检测出杂质之后自动进行缺陷的处理工作。通过对系统检测性能的不断研究测试,在调试过程中对控制系统进行多次调整,最终达到比较好的检测效果。最终实现了X射线对铝钒合f金实时成像,在发现目标陷的情况下可对杂质进行自动处理功能。现场实际应用表明,该设备具备铝钒合金1.2t/h的检测效率,并减少50%人工和少量原材料成本的消耗,为企业提高经济效益。更多还原

【Abstract】 Vanadium aluminum master alloy is the primary raw material for the production of vanadium titanium master alloy and vanadium metal. The development of vanadium aluminum is highly potential, therefore the amount of use for vanadium titanium and vanadium metal will increase largely. X-ray inspection of high density impurity is critical to guarantee the product quality.Based on the actual application demand of X-ray inspection equipment in vanadium aluminum quality inspection, during the production of vanadium aluminum, there is a possibility of product pollution caused by high-density metal materials, for example, a high-density metal impurity such as Pb and W, etc. is the fatal defect of the aerospace leveled vanadium aluminum master alloy. The article analyzed the fundamental principle of X-ray high-density metal impurity inspection equipment and comprehensively designed the X-ray high voltage system, image receiving system, motion control system and application software.First of all, it studied and analyzed the high voltage controller and X-ray generator, then selected the high voltage and image-forming system that is suitable for vanadium aluminum master alloy. According to vanadium aluminum master alloy and X-ray characteristics,choose proper signal receive module, and designed signal imaging and analyze system. LED line detector absorbs X-ray and converted to visible light by scintillate module, photodiode convert optical signals to electrical signals, the digital signals connect to IPC(Industrial Personal Computer) to processing after A/D conversion. According to the actual function requirement, designed the hardware frame, PLC is the center of the control system, and Ethernet is used to connect PLC, HMI interface, X-ray signal transmission and processing system to realize the safety and stable working requirement. At last system realized the automatic inspection and high-density impurity cleaning.Through the continuous research and analysis of inspection system performance as well as several adjustments during the commissioning process, the desirable inspection result was achieved finally. The final achievement is real time image forming of vanadium aluminum master alloy by X-ray and that the impurity can be automatically processed at the sight of defects, which could guarantee the high equipment efficiency and reduce the cost consumption of labor and raw material to increase the economic profit for enterprises.更多还原