| Application of Red and Green Light Signal Control Chart in Statistical Process Control of Rubber Vulcanization Production |
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| DOI： |
| Key Words: red and green light signal control chart；statistical process control；rubber product；vulcanization；length；stiffness |
| Author Name | Affiliation | | XIE Weihua | Zhuzhou Times New Material Technology Co.，Ltd | | ZHANG Younan | Zhuzhou Times New Material Technology Co.，Ltd | | LIANG Jianyao | Zhuzhou Times New Material Technology Co.，Ltd | | RONG Jigang | Zhuzhou Times New Material Technology Co.，Ltd |
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| Abstract: |
| In the control stage，the red and green light signal control chart was more intuitive than the general control chart in the statistical process control （SPC）of bilateral rules quality characteristic. The width of the characteristic distribution could be read directly. Under the premise of the sensitivity，the alarm rate was higher. The data points could be plotted directly in the red and green lights signal control chart，then it could be used as the control chart for analysis. When the characteristic parameter value was controlled within ±3σ for the length and stiffness of rubber products，the red and green light signal control chart was more suitable. |
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