What Quality Records Should a Casting Part Supplier Provide?
A casting part supplier should provide the quality records needed to show that the delivered part was made to the approved drawing, material, process route, finish, inspection plan, and functional requirement. The exact package depends on the part and customer specification. A useful record set connects the part or lot to its evidence; it does not simply accumulate certificates that cannot be matched to the production state.
Agree the record list before award. State which documents are required for tooling approval, first article, each production lot, periodic review, or a nonconformance investigation. Define whether the report must include actual measurements, sampling basis, equipment or gauge identity, operator or job number, and disposition. This prevents the buyer from discovering after production that a critical feature was never included in the quote.
Core Casting Quality Records
Start with product identity: part number, drawing revision, model revision, job, lot, quantity, and packaging identifier. Add material identity: alloy designation, condition, material lot, and required certificate or test record. Tool records should identify the die, pattern, core, insert, trim tool, fixture, and gauge revision. Process records should show the route used and any approved repair or adjustment that could affect the part.
Inspection records should be tied to the feature and state being accepted. A rough-cast visual report, a machined dimensional report, a coating report, and a final leak test answer different questions. If the supplier uses a sample rather than checking every part, state the sampling basis and the disposition if a sample fails. Quality records should make that scope visible.
Record category | What it should identify | Why it matters |
|---|---|---|
Product release | Part, revision, lot, quantity, and delivered state | Confirms which requirement was supplied |
Material | Alloy, condition, source or melt lot, and record | Supports identity and substitution review |
Tool and process | Tool revision, route, repair, and job identifier | Connects results to production conditions |
Inspection and test | Feature, method, sample, result, and disposition | Shows why the finished part was accepted |
Records After Machining and Finishing
If the supplier delivers a machined part, request the machining route, fixture or datum basis, final dimensions, surface condition, burr and cleaning control, and any functional test. The post-machining service should be included in the acceptance discussion when a bore, thread, seat, gasket land, or locating face determines assembly.
For a finish, record the process, batch, masking, cleaning, appearance or adhesion check, and any effect on dimensions or functional interfaces. A coating report does not replace a casting or machining inspection. The record set should identify the final state that the customer receives, not stop at the first operation.
Deviations and Nonconformance
Require a deviation or nonconformance record to show the affected part, drawing revision, lot, condition, reason, containment, disposition, approval, and any reinspection. A tool repair, material substitution, process change, or rework should not be hidden inside a routine inspection report. The buyer needs to know whether the accepted part differs from the released requirement and whether the approval is temporary.
Ask how the supplier isolates suspect material and traces it to other shipments. A useful quality system can identify the first and last affected lot, the tool or process state, and the decision that released or rejected the parts. The exact system may differ between suppliers, but the investigation path should be clear before a problem occurs.
Retention and Access
Specify file format, naming, delivery method, retention period, revision status, and access responsibilities. If the OEM must receive a certificate with every shipment, state that. If the supplier retains records and provides them on request, define the response process. Keep confidential process details protected, but do not remove the identifiers needed to investigate fit, function, field performance, or a material concern.
The right record package is the smallest complete set that proves identity, conformity, function, and approved change for the delivered part. Agreeing it during the RFQ makes supplier comparison fair and keeps quality evidence from becoming an unpriced launch problem.
Ask the supplier to show how a single part or lot is connected from the metal casting job to any post-machining, finish, inspection, and shipment records. The demonstration can use a redacted sample, but the identifiers and handoffs should remain visible. This helps the buyer judge whether the proposed records will support a real containment or field investigation.
Also agree who reviews and releases the records. A supplier may prepare a report, an internal quality representative may approve it, and the OEM may accept the shipment. Those roles should be named for first article, routine lot release, and nonconformance. If the part is reworked, the record should identify the rework operation and the features rechecked before shipment. That keeps a pass result from being separated from the conditions under which it was obtained.
For a recurring program, include a rule for record revision. If the drawing, tool, material, inspection gauge, or finish changes, the report should show the effective revision rather than reusing an old form. The buyer can then tell whether a shipment was released against the current requirement and whether a prior result still applies.
