摘要
经典的休哈特控制图对质量特征值的均值波动检出力较弱。采用均值-极差控制图控制印刷电路板锡浆厚度在短期内往往很难发现印刷锡浆厚度偏差的偏移,导致印刷锡浆厚度偏差调整不及时。为了提高检出力,采用累积和控制图(CUSUM)来控制印刷锡浆厚度偏差的变化,改进了印刷锡浆厚度偏差调整方式,在保证质量的同时降低了生产成本。
Traditional Shewhart control charts have low power in detecting mean shift of quality characteristic values. When an mean-range control chart（X-R）is used to control its deviations of thickness of solder pasteprinting amount, it is found that X-R is too insensitive to the shift of the deviations and unable to calibrate itssolder paste printing machines in time. A CUSUM control chart is used to control the variation of the deviation of solder paste-printing and to improveits shift modes,and to improve machine calibration, which results in high quality and low cost in solder paste printing process.
出处
《河南科技》
2015年第5期43-45,共3页
Henan Science and Technology
基金
中央高校基本科研地下水毛细带渗流特性(3108-2913-0225)
