Monitoring Yarn Count Quality using Xbar-R and Xbar-S Control Charts
Control Chart to Monitor Yarn Count Quality
Keywords:
Autocone, ring frame, yarn count, process monitoringAbstract
Yarn quality monitoring is necessary by the spinners to sustain their business in the world market. Therefore, yarn quality control is a basic protocol requirement for producing good quality textile products. For this purpose, quality control charts are used for monitoring yarn quality at each step during the yarn manufacturing process. In this study, we considered Ring and Auto Cone departments and tested/monitored the yarn count quality by using Xbar-R and Xbar-S control charts in both departments. Machine-wise yarn count samples were selected to monitor the yarn count quality in both departments. It was observed that in Ring department yarn count quality was not in statistical control. However, in auto cone department; yarn count quality was in statistical control. So control charts are a good tool for monitoring the yarn count quality.
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