Quality
What we check, and when
Alpine Stampings inspects at three points in every job: first-off at setup, in-process during the run, and final inspection before packing. The cadence is the reassurance, not any single measurement.
When we inspect
At every setup
First-off inspection
Before we release a run, we inspect the first piece off the tool against your drawing and the tolerances agreed for that part.
During the run
In-process inspection
We keep checking while the press is running, so drift is caught inside the lot rather than at the end of it.
Before packing
Final inspection
We inspect the finished lot and raise its report before anything is packed.
What we check
Alpine Stampings inspects these attributes on every lamination and stamping.
- Slot concentricity
- Stack height
- Burr on punched and slit edges
- Pitch variation
- Runout
- Blanking ID/OD concentricity
- Overall dimensional conformity to drawing
- Watt loss on electrical steel
- Material grade and thickness against the mill certificate
- Coating condition
- Surface and visual defects
- Pack count and lot identity
The quality system
Alpine Stampings governs the checks through a quality assurance plan and control plan held per part.
- Quality assurance plan and control plan
- Held per part, not per factory.
- CTQ format
- We identify and record the critical-to-quality characteristics for each part.
- CAPA
- Corrective and preventive action, with the action documented and closed.
- Calibration control
- We keep our measuring equipment under calibration control.
- Drawing and revision control
- We make parts to the current revision, and we record the revision.
The three inspection points sit inside a longer run. Material is checked in at goods-in, slit, stamped, inspected and packed, in the order set out in how a coil becomes a packed lot.
The mill test certificate that travels with every lot is not raised here — it comes from the mill. The reason there is always one is that the steel is bought direct from the mills rather than through a stockist.
Certification
Alpine Stampings is certified to ISO 9001 for the manufacturing and supply of electrical stampings and magnetic steel laminations.
- Standard
- ISO 9001
- Certificate
- 24EQOS03
- Scope
- Manufacturing & supply of electrical stampings and magnetic steel laminations
- Valid to
- October 2027
What you receive
- Mill test certificate
- The source mill's test certificate goes out with every despatch.
- Finished-goods inspection report
- We raise one per lot.
- Lot identity
- We maintain it through packing.
Common questions
What is checked, when, and what travels with the lot.
- When during a job do you inspect?
- Alpine Stampings inspects at three points in every job: first-off at setup, before the run is released; in-process while the press is running, so drift is caught inside the lot rather than at the end of it; and final inspection on the finished lot before anything is packed.
- What do you check on a lamination or stamping?
- Alpine Stampings checks slot concentricity, stack height, burr on punched and slit edges, pitch variation, runout, blanking ID and OD concentricity, overall dimensional conformity to the drawing, watt loss on electrical steel, material grade and thickness against the mill certificate, coating condition, surface and visual defects, and pack count and lot identity.
- What documents come with a despatch?
- Every despatch from Alpine Stampings carries the source mill’s test certificate and a finished-goods inspection report, raised per lot. Lot identity is maintained through packing.
- Are you ISO 9001 certified?
- Yes. Alpine Stampings is certified to ISO 9001 under certificate 24EQOS03, valid to October 2027, for the manufacturing and supply of electrical stampings and magnetic steel laminations.
- What tolerance do you hold?
- Alpine Stampings agrees tolerances per part against your drawing and confirms them at first-off inspection. No blanket tolerance is published, because the figure that matters is the one on your drawing.
- How is the quality system governed?
- Alpine Stampings holds a quality assurance plan and control plan per part rather than per factory, records the critical-to-quality characteristics for each part in a CTQ format, documents and closes corrective and preventive action, keeps measuring equipment under calibration control, and makes parts to the current drawing revision and records that revision.
Related pages
- How a coil becomes a packed lot
The run these checks sit inside, from material selection through to packing and despatch.
- Bought direct from the mills
Where the certificate that travels with your lot comes from, and how coil and heat identity is carried through.
- Starting a new part
Where tolerances are agreed and confirmed at first-off, before a part is released to run.
Request a quotation
Send us the drawing with the grade, thickness and monthly volume. If the grade is not settled, say so and we will advise against the application.