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Quality · Lot tracking & records

Traceability

Every shipment carries a lot code that traces back to the corresponding in-process control records.

Traceability is the documentation that lets your incoming QC team — or an auditor — answer "where did this part come from" in less than five minutes. Wolfer's lot system ties every shipped part back through inspection, heat-treatment, cutting, and material origin.

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Default record retention is 10 years. Customers in regulated industries (medical, aerospace) sometimes request longer retention — we accommodate on request.

If a customer ever finds a defective part, the lot code on the label is the entry point into the full record. We have used this system to identify a single defective process lot out of 200 lots shipped in a year — and to confirm that only 8 customers received parts from that lot.

Quality

What gets tracked

STEP 01

Material — mill certificate

EN 10204 3.1 mill certificate on every part lot. Heat number traceable to the steel mill.

STEP 02

Cutting record

CNC program version, operator ID, machine ID, date logged per part lot.

STEP 03

Heat-treatment record

Furnace run number, temperature profile, hardness verification. Attached to lot.

STEP 04

Grinding record

Tool wear log, in-process dimensional check.

STEP 05

Inspection record

CMM trace + gear-inspection center output (for gears). Lot-coded.

STEP 06

Shipment label

Lot code printed on each part label. Recall trace from label → part → all 5 records above.

Related pages

Continue exploring quality.

Digital Management

3D drawing database, FEA validation, and traceable production records for every shipment.

Read →

Inspection

Every part measured before it ships. PREC60 gear measuring center, CMM, hardness, surface.

Read →

Certifications

ISO 9001:2015 · SGS · National High-Tech Enterprise · Tax Credit A.

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