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Pareto — Injection Moulding Defects

A week of cavity-line reject codes typed straight off the check sheet as unquoted labels, computing that 4 of 10 defect modes account for 82.6% of 1,693 rejects and folding the three rarest modes into an explicit Other bar.

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Injection moulding rejects — cavity line 2, week 34Week 34 · 10 categories · total 1,693 rejects · threshold 80%Week 34 (rejects)Cumulative %02004006008000%20%40%60%80%100%80% threshold6123882411579674527336.1%59.1%73.3%82.6%88.2%92.6%95.7%100%vital few · 4Short shotFlashSink marksWeld lineBurn marksWarpageSilver streaksOther4 of 10 categories (40%) account for 82.6% of 1,693 rejects.Vital few at 80%: Short shot, Flash, Sink marks, Weld line — 1,398 of 1,693 rejects.Other folds 3 categories past the bar limit (73 rejects, 4.3%).12,480 shots inspected; 100% vision gate on every cavity

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title "Injection moulding rejects — cavity line 2, week 34"
unit rejects
period "Week 34"
threshold 80%
max-bars 8
note "12,480 shots inspected; 100% vision gate on every cavity"

# labels need no quotes when they end in words rather than digits
Short shot        612
Flash             388
Sink marks        241
Weld line         157
Burn marks         96
Warpage            74
Silver streaks     52
Black specks       38
Jetting            21
Flow lines         14