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为评价点焊接头的冲击性能,研发一台摆锤式冲击试验机和冲击夹具.利用LabVIEW软件和高速数据采集卡,开发了试验机的逻辑控制软件、人机界面、数据采集和处理系统,上述硬件设备和软件组成完整的点焊接头冲击性能测试系统.利用所研制的试验机对DP980材料的点焊试样进行冲击测试试验,得到了不同点焊电流条件下拉伸-剪切冲击性能评价参数.详细对比分析了采用不同测量或计算方法所获得的冲击力、摆锤最大剩余摆角以及总冲击吸收功.结果表明,试验机测量的冲击力是可靠的,数据分析处理算法是合理的,其测试结果可用于点焊接头冲击性能的评价. 相似文献
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A hydrometallurgical process was developed for recovery of nickel and cobalt from the hydrochloric acid leaching solution of alloy scraps. The process consists of five maj or unit operations: 1) leaching with 6 mol/L hydrochloric acid under the L/S ratio of 10:1 at 95 ℃ for 3 h; 2) copper replacement by iron scraps under pH value of 2.0 at 80 ℃, and stirring for 1 h, 3) removal of iron and chromium by chemical precipitation: iron removal under pH value of 2.0 at 90 ℃ by dropwise addition of sodium chlorate and 18% sodium carbonate solution, then chromium removal under pH value of 4.0 at 70 ℃ by addition of nickel carbonate solution, stirred by air flow for 2 h; 4) selective separation of cobalt from nickel by extraction using 30% trialkyl amine+50% kerosene (volume fraction) and tri-n-butylphosphate (TBP) as a phase modifier with the O/A ratio of 2:1, and stripping of cobalt with 0.01 mol/L HCl; 5) crystallization of nickel chloride and electrodeposition of cobalt. It is found that the nickel recovery of 95% and the cobalt recovery of approximately 60% with purity over 99.9% are obtained by this process. 相似文献
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Archiving data processing of WinCC V6 总被引:1,自引:0,他引:1
在实际中,过程数据是最重要的.项目激活或去激活时,我们都需要对指定格式的数据进行处理.Wincc v6是一款功能强大的HMI系统.它可以组态界面并且可以对数据进行归档.但是由于Wincc v6中的归档数据是会被压缩的,并且不保存在主数据库中,因此我们需要将归档数据导出,以方便进行数据处理.Wincc v6提供VBS的开发环境,用VBS,我们就可以方便得修改数据格式.本文提供了一种解决方案,将归档数据导出到Excel中. 相似文献
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