Proposal and test · Line B · Moulding

Hold pressure: 720 to 760 bar

Hold pressure 720 to 760 bar · optimiser opt 2.4.1 · raised 20 Oct 12:50

Process agent·Line B·Press P3·Hold pressure 720 to 760 bar·12:50StayNeeds a decisionexpires in 2 h

Raise hold pressure from 720 to 760 bar

Short shots rose on cavity 2 over the last three shift runs while melt temperature held steady. Higher hold pressure closed the gap in 6 of the 8 best runs.

EV-B-2201 EV-B-2207 EV-B-2214

Expected result

EstimatedScrap rate2.8 %90% interval 2.4 to 3.3

Spec 0 to 4 % (dashed). Driven by Cavity 2 pressure trend, Part weight on cavity 2, Tool temperature.

Why this confidence

Method: Optimiser opt 2.4.1; band from the model of the machine; weakest input estimated
Model fit: Accepted, four checks passed
Safety filter: Passed: Inside narrowed band 640 to 820 bar; Clamp force margin over 12%
Evidence: EV-B-2201, EV-B-2207, EV-B-2214

Limits

Hold pressure720 barto 760 bar

600640 to 820 narrowed860

Signed by Plant head A. · 20 SeptStamped narrowingNowProposed

If stoppedStop keeps 760 bar and writes nothing new. The next value waits for a person.

NoticedProposedWaitingstayMeasuringVerdictHolding

Test on the model of the machine

Before anything is written

Predicted scrap rate

EstimatedScrap rate2.8 %90% interval 2.4 to 3.3

Spec 0 to 4 % (dashed). Driven by Cavity 2 pressure trend, Part weight on cavity 2, Tool temperature.

Why this confidence

Method: Model Line model B b-1.6; band is the model's 90% interval; no single score is documented for proposals
Model fit: Accepted, four checks passed
Safety filter: Passed: Inside narrowed band 640 to 820 bar; Clamp force margin over 12%
Evidence: EV-B-2201, EV-B-2207, EV-B-2214

Scrap rate, last 12 shift runs

Check	Result	Detail
Safety filter	Passed	Inside narrowed band 640 to 820 bar; Clamp force margin over 12%
Model fit	Accepted	Line model B b-1.6, coverage 91% on 214 held-out points
Weakest input	Estimated	A claim is as strong as its weakest load-bearing input
Inside the window	Yes	Signed 600 to 860 bar, narrowed 640 to 820

Model fit · Line B

Line model B b-1.6

Accepted

90% interval coverage on 214 held-out points91%

70%85 to 95% accepted100%

PassHeld-out error0.21 % scrap
Pass90% interval coverage91%
PassNo drift in residualsflat, 30 d
PassPhysical limits respectedall

Calibrated 12 Oct. Proposals on this line may carry a number. Model fit

Runs this rests on

Recent runs
Run	Hold pressure	Scrap rate
Shift run 679	720	3.76
Shift run 678	720	3.4
Shift run 677	720	3.57
Shift run 676	720	3.3
Shift run 675	720	3.71
Shift run 674	720	3.57

History

20 Oct 12:50Proposed by optimiser opt 2.4.1