For laser marking aluminum parts, release the marking data together with the finished-part drawing. Show the exact content, location and reading direction, the surface condition at marking, the required mark appearance and the acceptance method. Approve a representative finished sample before releasing a production batch.
The useful purchasing question is: can the marking supplier reproduce the approved information on the correct face of the delivered part? A logo file alone leaves too much of that question unanswered.
A complete marking handover has three connected items
- A part drawing that locates the mark.
- A controlled artwork or data file that defines its content.
- A sample and acceptance record that define the delivered result.
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Laser marking aluminum: control the content first
Separate fixed artwork from information that changes between parts. A company logo or connector legend may stay the same; a serial number, date or batch reference may change. Tell the supplier which fields belong to each group.
Provide the approved artwork file and identify its revision. Include a readable proof showing the intended text, symbols and arrangement. Ask the marking supplier to confirm supported file formats and how it will interpret the file.
For text, show exact capitalization, punctuation and spacing. Identify the approved font and finished character size where these are controlled requirements. If the supplier proposes converting lettering to outlines or changing a font, review the resulting proof before release.
For variable information, identify who supplies the data and who authorizes it. Define the source file, field meanings and record assigned to each component. Preserve leading zeros where they form part of an identifier.
A sequence also needs a handling rule for rejected or replacement parts. Agree whether the original identifier is retained, cancelled or replaced, and keep the record connected to the physical component. Avoid assigning the same identifier through an undocumented restart.
The separate cut-part barcode-label guide deals with labels and work identification. Direct marking needs its own approved content and delivered-surface review, even when both methods refer to the same part record.
2. Locate the mark on the finished component
Use a drawing view that clearly identifies the receiving face. Dimension the mark location from defined part features, such as an edge or locating hole. Show its reading direction and the part orientation in that view.
A photograph can help explain which face is intended, but it should not replace location dimensions and the approved drawing reference. “Place the text near the end” can produce different interpretations when the section has several similar faces.
Show whether a location refers to the artwork boundary, its center or another defined reference. Keep that reference consistent between the part drawing and the marking proof. Include the permitted placement variation when the design requires one.
For left and right components, provide separate identified views or an explicit approved relationship. Text that reads correctly on one part may face the assembly interior on its counterpart. Review both delivered orientations.
Identify features that limit access or the available mark area: curved faces, narrow lands, grooves, fasteners and later cover panels. Ask the marking supplier to review the actual geometry rather than assuming a flat-panel example covers every section.
Check visibility in the required use state. A mark intended for receiving may be covered after assembly; a service identifier may need to remain readable. State which stage the location must serve.
3. Identify material and finish at the marking stage
Give the marking supplier the approved alloy, product form and finish requirement. Identify whether the mark is applied to an unfinished part, an anodized surface or another specified coating. Include the planned production sequence.
KEYENCE’s aluminum marking overview describes surface alteration and deeper material removal as different marking outcomes. It also discusses differences between raw and anodized surfaces. This supports reviewing the actual material and finish when specifying a result.
Request a sample in the same agreed surface condition as the delivery. An attractive mark on a different alloy, coating color or preparation is not enough to approve the ordered part.
List later operations that may affect the mark, including coating, machining or assembly. State the final stage at which readability and appearance are accepted. A mark approved before a later finish needs a review of the delivered state.
Where the surface has a functional requirement, obtain the responsible technical approval for the marking area and process. Identify excluded contact faces, sealing faces or other controlled zones on the drawing.
If the part carries conversion-coating requirements, keep the finish and marking specifications connected. A marking sample does not by itself establish the acceptance of an electrical interface or coating qualification.
4. Describe the required result, not only a process name
State what the approved mark must look and feel like. If the drawing requires engraving depth, identify the controlled requirement. If the priority is visible contrast, include the agreed comparison or inspection reference.
Protocase’s laser-marking page distinguishes several mark types with different appearances and surface effects. Its engraving option removes material to create depth; its ablation option removes a coated surface layer. The page treats annealing as an option for stainless steel.
Those supplier-specific options illustrate why an aluminum RFQ should describe the required result clearly. They do not establish JiurunCut’s marking capability or a universal setting for another marking system.
Ask the proposed marking supplier to identify its process and demonstrate the agreed result on the representative part. Review the finished appearance and any required feature condition together.
For a machine-readable code, provide its required data format and acceptance method. State whether the requirement is a basic read check or verification against an applicable specified method. Have the responsible reviewer define the criteria and records.
Keep decorative graphics and controlled identifiers distinguishable in the release packet. A customer’s visual preference for a logo and a specified code-verification requirement may need different acceptance evidence.
5. Release a sample, then control the production batch
Approve the actual marking proof before sample production. It should show the part reference, artwork revision, variable-data example and location view. Record any open questions so a preliminary proof is not mistaken for final approval.
Review the sample in the agreed delivered condition. Check exact text, position, orientation and appearance. Where the order requires code verification or another defined check, obtain the corresponding record.
Identify the accepted sample and its approval date or revision. Keep photographs as supporting records, with the physical sample or agreed acceptance reference available when appearance matters. An unlabelled image can lose its connection to the current order.
| Release item | What it identifies |
|---|---|
| Part drawing | Correct component, face, position and orientation |
| Artwork and data | Approved fixed content and changing fields |
| Finished sample | Accepted surface state and mark result |
| Batch record | Delivered parts and their assigned identifiers |
For production, agree how the supplier checks the approved setup and confirms the assigned data. Request records that connect the delivered quantity and identifiers to the purchase order. Review changes to content, location or finish before using them.
A drawing handover example
Fictional planning example: a buyer orders 40 enclosure rails identified as M28 revision C. The marking file contains a fixed part reference and 40 assigned serial-number records. The drawing shows the mark on an outside face, measured from the finished left end.
The proof shows the correct characters, but the first drawing view does not say which end is left when the rail is installed. The buyer adds an installation-orientation view and an explicit reading direction before sample approval.
The release record then connects the revised location view, artwork revision and serial-number file to the sample. This example illustrates document coordination; it is not a customer case, marking test or recommendation for a particular process.
Cut blanks for the next process
Tell the cutting supplier which finished end or feature establishes the marking reference. Identify the blank length, quantity, orientation and subsequent machining. A raw stock end may not be the final location datum.
Maintain the part identity through cutting and later operations. Use the batch-traceability guide to connect the cut blanks to the relevant drawing and material records.
Send JiurunCut your profile drawing and cutting list with the next-operation requirements. Assign marking process approval and final acceptance to the agreed responsible supplier and reviewer.
Buyer questions
Is a logo image enough for a laser marking aluminum RFQ?
Provide the artwork revision, finished size, location, reading direction, surface condition and acceptance reference as well.
Does a successful phone scan prove a code meets its specification?
Use the specified acceptance method. A basic scan and formal verification are different requirements.
Can an unfinished sample approve a mark on a coated delivery?
Approve the agreed finished condition and production sequence. Review any changed surface before release.
Who should assign serial numbers?
Identify the data owner and approved assignment process in the order, including how rejected and replacement parts are recorded.