SPC and Cpk

This topic has 1 reply, 2 voices, and was last updated 5 months ago by Chris Seider.

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January 14, 2022 at 5:56 pm #256026

Allen Specter
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What happens if i implement SPC chart for amount of Qty in and another chart for amount of Qty out for a process I-MR chart for both? My aim is to control the production loss (opposite of yield). Can i control Cpk for this qty in and qty out? Thanks.

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February 2, 2022 at 5:34 pm #256204

Chris Seider
★ 20 Years ★
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I can’t imagine doing SPC on amount in and amount out if you are looking at quality as your pain point. Knowing nothing else of your process, why not look at quality % with a run chart. If you’re going to do SPC, I bet you’d have too many things to investigate if quality goes out of control.

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