A structural job, a request for certificates, and a skeleton in the skip
A customer ordering brackets and cleats for a steel frame asks for the material certificates for every part, with heat numbers. The parts were cut on three nests, from three sheets, mixed with parts for five other jobs. The sheet labels with the heat numbers went into the scrap skip with the skeletons.
The office pulls every 8mm plate certificate from around that date and tries to guess which ones apply.
Why traceability breaks at the laser
Up to the laser, traceability is simple: a sheet has a label and a certificate. At the laser, one sheet becomes many parts for many jobs. Unless someone records which sheet was loaded for which nest, the link is gone the moment the skeleton is lifted off.
- Sheet labels are not recorded when sheets are loaded.
- Nest reports show parts and jobs, not heat numbers.
- Parts are not marked with anything that links them back.
- Certificates are filed by delivery, not by sheet.
- Remnants lose their identity when they go back to the rack.
What lost traceability costs
Certificates that cannot be produced, holding up payment or acceptance. Parts that have to be scrapped and remade from known material. For work where your customer's specification or your own production control asks for traceability, gaps can mean audit findings and harder conversations with the people who approve you. What level of traceability your work needs is set by your customers and your own quality system.
The nest level traceability we build
- At goods in, each sheet or plate is logged with material, grade, thickness, size and heat or cast number, and its certificate is attached. It gets a barcode label.
- When a sheet is loaded for a nest, the operator scans the sheet label and the nest. That one scan links the heat number to every part on the nest.
- Parts that need to carry their identity can have the heat or batch reference marked on them by the laser, where it supports marking, or on a label.
- Remnants inherit the sheet's heat number when they go back to the rack.
- For any job, the tool lists every part, the nest it came from, the sheet and the heat number, and assembles the certificates into a pack.
- The reverse search works too: for a given heat number, every job and customer that received parts from it.
| Point in the flow | Traceability record |
|---|---|
| Goods in | Sheet, heat number, certificate |
| Loading the laser | Sheet scanned to the nest |
| Cutting | Every part on the nest linked to the heat |
| Remnant back to rack | Remnant keeps the heat number |
| Dispatch | Certificate pack for the job |
What you can do afterwards
Certificate packs for a job take moments rather than a morning of guessing. The laser operator adds one scan when loading a sheet, which is the only extra step. Remnants can be used on traceable work because their heat number is known. And if a stockholder warns about a heat number, you know which jobs used it.
It also helps the programmer. When a traceable job is nested, the tool can show which sheets and remnants of the right grade have certificates on file, so the nest is not built on a sheet whose paperwork is missing. That problem is much cheaper to find at nesting than at dispatch.
Customers who audit you will usually pick a finished part and ask you to trace it back. With nest level records, you can walk from the part to the nest, the sheet, the heat number and the certificate while they watch.
Would you struggle to trace a part to its sheet?
- Sheet labels go to scrap with the skeleton.
- Certificates are filed by delivery date.
- Customers ask for heat numbers you cannot give.
- Remnants are avoided for traceable work.
- Nest reports show jobs but not material batches.