Custom cold forged heat sinks in Vietnam should be sourced through a part-specific manufacturing review. A useful RFQ gives the supplier enough information to evaluate forming, secondary operations and acceptance requirements before committing to tooling or a recurring price.
Custom cold forged heat sinks: quick answer
Custom cold forged heat sinks need a controlled RFQ covering geometry, alloy, thermal boundary, quantities, tooling and acceptance. Confirm first-article and qualification responsibilities before production tooling release.
For heat sink manufacturers and AI hardware OEMs, the commercial objective is a stable component supply. The initial quotation should therefore describe both the approved product and the production assumptions behind it.
Send a controlled technical package
Provide the 3D model and 2D drawing at the same revision, with units, alloy, condition and finish. Mark the contact face, functional datums, mounting features and surfaces that must be protected. Identify whether the drawing defines a finished part or a blank for further processing elsewhere.
Include thermal targets with their boundary conditions when the supplier is expected to contribute to the thermal design or qualification. If the customer owns thermal design and only requires build-to-print manufacture, state that scope clearly.
Show demand as a profile, not one annual number
State prototype quantity, pilot demand, expected batch size and the anticipated production ramp. Add the forecast period and identify which volumes are committed orders and which are planning estimates. This helps the supplier evaluate tool investment and production loading without treating a forecast as a purchase commitment.
Request prices at meaningful order quantities. A part made in small releases can have a different cost from the same annual quantity made in large batches because setup, inspection and logistics occur at different frequencies.
Separate tooling from recurring component cost
Ask the quotation to identify tooling, sampling, gauges and other nonrecurring costs. For recurring parts, define the included material, forming, machining, finishing, inspection and packing. Freight, duties and delivery terms should be clear enough for a like-for-like comparison.
A simple tooling decision model is Q = ΔF/Δc, where ΔF is additional fixed cost and Δc is recurring saving per accepted part. For illustration, an extra $8,000 of tooling with $2 saving per part reaches an arithmetic break-even at 4,000 parts. This is not a TDB quotation and excludes financing, revisions, maintenance and qualification differences.
Agree ownership, maintenance and design changes
Document who owns the tool, where it is stored, what maintenance is included and how changes are authorized. Ask how wear is monitored and how replacement tooling will be qualified. Tool ownership alone does not define all rights to process knowledge or the conditions for a tool transfer.
Keep product revision control separate from commercial discussions. A change to pin layout, material or contact geometry can affect the forming route and thermal approval. Request an impact review before implementing it, even when the new feature appears small.
Plan sample approval and shipment protection
Define first-article evidence, the approved final finish and any thermal qualification responsibility before the pilot run. Production approval should reference the accepted drawing and process scope rather than only a sample photograph.
Specify packaging that protects pins, contact faces and threads. Decide whether parts require separation, orientation control or individual protection. Review the delivered condition after a representative shipment if transport damage would compromise assembly or inspection.
Request a project review from TDB Hanoi
TDB Hanoi has an aluminum cold-forming line and provides CNC milling services. A custom heat sink inquiry should establish which geometry is suitable for the line and which features require subsequent operations. Capacity, lead time, tolerances and price are confirmed for the reviewed part and order scope.
To begin sourcing, send TDB Hanoi your drawing and project requirements. Include your demand profile and required approval date so the technical and commercial reviews use the same project assumptions.
For a manufacturing-route reference, EKL’s cold forging overview illustrates secondary machining of formed heat sinks. Use this to frame process questions, while keeping the quotation tied to the controlled component drawing.
TDB Hanoi impact extrusion project capability
TDB Hanoi has an aluminum cold-forming production line with press capacity up to 500 tons and can form products weighing up to 1 kg. These are equipment and part-mass capability limits; feasibility depends on the alloy, geometry, tooling and required final condition. They do not imply that every 1 kg design can be formed or that a thermal rating is guaranteed.
| Capability item | Project review basis |
|---|---|
| Maximum stated press capacity | 500 tons |
| Maximum stated product mass | 1 kg |
| Dimensions, pin geometry and tolerances | Confirmed after drawing, material and tooling review |
| Thermal acceptance | Agreed test conditions and responsible party |
For custom cold forged heat sinks, include the component drawing and its functional requirements so TDB can review the suitable manufacturing scope.
Frequently asked questions
Can I get a firm price from a photograph?
A photograph can support an initial discussion. A firm manufacturing quotation needs sufficient controlled geometry and acceptance information.
Is the lowest tooling price always the best offer?
No. Compare tool scope, recurring cost, maintenance, revision risk and the evidence required for acceptable parts.
Should I order a production tool before thermal approval?
Agree a staged development plan. Resolve the risks that could change the tool geometry before committing to irreversible design decisions.
Related impact extrusion guides
- Cold Forged Aluminum Heat Sinks for AI Hardware: An OEM Guide
- Cold Forging vs Extrusion vs Skiving: Choosing a Heat Sink Process
- CNC Machining Cold Forged Heat Sinks: Flatness, Holes and Contact Faces
- Heat Sink Quality Inspection: From Formed Geometry to Thermal Qualification
Browse the Impact Extrusion knowledge center or request a part-specific manufacturing review.