Ask

Saved answers

Answers people kept. An answer turns stale when the data it cites changes; the reason and date are shown.

Saved

6 of 6 · grouped by line

Line A · 3

Saved answers, Line A
Question	Topic	Saved by	Confidence	State
Line A viscosity driftViscosity rose 38 mPa·s over 9 batches with end-of-hold torque; a small agitator increase is modelled to bring it back.	Quality	Quality head A.20 Oct	Modelled2430 to 2560 mPa·s after the change	Still current
Will a shorter hold work on Grade A-12?A 50 min hold was predicted to keep viscosity inside spec.	Process	Process engineer A.11 Oct	Modelled2300 to 2620 mPa·s	Stale since 17 Oct
Lot 3307 outlookPredicted viscosity sat near the upper spec; the band was unanchored at the time.	Quality	Shift lead A.18 Oct	Estimated2540 to 2630 mPa·s	Stale since 19 Oct

Line B · 3

Saved answers, Line B
Question	Topic	Saved by	Confidence	State
Tool T3 cycle change, valueParts per shift rose 2.6% after the cycle change; the value at the plant's prices is on the owner's Home.	Process	Owner A.19 Oct	Measured1.9 to 3.3% parts per shift	Still current
Hold pressure 720 bar, did it hold?Scrap fell 0.6 points and was still holding at the last check.	Process	Plant head A.14 Oct	Measured0.3 to 0.9 points less scrap	Still current
Light parts on cavity 2Part weight on cavity 2 recovered after Process raised hold pressure.	Quality	Quality head A.7 Oct	Measured48.0 to 48.4 g	Still current

Why, and since when

Counts
Line	Topic	Saved	Stale
Line A	Process	1	1
Line A	Quality	2	1
Line B	Process	2	0
Line B	Quality	1	0

Evidence
Id	Label	Claim	Saved answer	Proof
EV-B-2101	Measured	Parts per shift rose 2.6%, interval 1.9 to 3.3%.	Tool T3 cycle change, value	Cycle time 33.2 s, Line B
EV-A-1180	Measured	Viscosity rose 38 mPa·s over the last 9 batches.	Line A viscosity drift	Source record
EV-A-1188	Measured	End-of-hold torque rose with it on the same batches.	Line A viscosity drift	Lot 3307 viscosity save
EV-A-1191	Modelled	A small agitator speed increase would bring it back inside the band.	Line A viscosity drift	Source record
EV-A-1180	Measured	Viscosity rose 38 mPa·s over the last 9 batches.	Will a shorter hold work on Grade A-12?	Source record
EV-A-1188	Measured	End-of-hold torque rose with it on the same batches.	Will a shorter hold work on Grade A-12?	Lot 3307 viscosity save
EV-A-1191	Modelled	A small agitator speed increase would bring it back inside the band.	Will a shorter hold work on Grade A-12?	Source record
EV-B-2101	Measured	Parts per shift rose 2.6%, interval 1.9 to 3.3%.	Hold pressure 720 bar, did it hold?	Cycle time 33.2 s, Line B
EV-B-2214	Measured	Two proposals accepted on Line B, one waiting on Line A.	Light parts on cavity 2	Source record

Quality head A. · Line A · Quality

Still current

Viscosity rose 38 mPa·s over 9 batches with end-of-hold torque; a small agitator increase is modelled to bring it back.

ModelledBand 2430 to 2560 mPa·s after the change

Answer as saved, from the thread

Why is Line A viscosity drifting up this week?

ModelledWeakest of 3 cited claims

Why this confidence

Method: Each claim carries the label of its evidence; the answer takes the weakest. Uncited numbers are removed before an answer is shown.
Evidence: EV-A-1180, EV-A-1188, EV-A-1191

Viscosity rose 38 mPa·s over the last 9 batches.EV-A-1180Measured
End-of-hold torque rose with it on the same batches.EV-A-1188Measured
A small agitator speed increase would bring it back inside the band.EV-A-1191Modelled

agitator: 150 to 158

ModelledViscosity2490 mPa·s90% interval 2430 to 2560

Spec 2380 to 2600 mPa·s (dashed). Driven by End-of-hold torque, Charge mass, Jacket inlet temperature.

Why this confidence

Open in AskSaved 20 Oct