Aluminum heat sink blanks give thermal solution manufacturers a way to source the primary metal geometry while retaining selected machining, finishing or assembly operations in their own production system. For an AI hardware program, the useful question is how that blank will become an accepted component.
Aluminum heat sink blanks: quick answer
Aluminum heat sink blanks can be supplied as a defined intermediate component for a thermal OEM’s own machining or assembly. Specify the delivered condition, machining allowance, material and acceptance features before releasing the tool.
TDB Hanoi welcomes drawing-based inquiries from heat sink manufacturers and electronics assemblers evaluating a Vietnam source for suitable cold-formed aluminum parts. The supply scope can be reviewed around a blank, a partly machined component or a finished mechanical part.
Start with the condition your factory needs to receive
A blank specification should describe the delivered condition rather than merely repeat the final assembly drawing. Identify which contact faces, holes and pockets your team will machine later. State the stock that must remain and the surfaces that will locate the blank in your fixtures.
This separation helps both companies control responsibility. A formed feature can be accepted against the blank drawing, while a later machined feature remains subject to the finished-component specification. The two revisions should remain connected throughout the program.
Review the primary geometry for cold forming
Cold forming shapes solid material through deformation in tooling. Neuman’s impact extrusion overview provides an industry example of cold-formed aluminum heat sinks. It is a technology reference, not a statement that every geometry is feasible on TDB equipment.
For a proposed blank, review the base, fin or pin arrangement, transitions and the direction in which the part leaves the tool. Ask which features can be formed consistently and which require subsequent processing. Any proposed change should be approved on the controlled drawing before the tool is released.
Preserve enough material for functional machining
Machining allowance must accommodate the accepted variation of the incoming blank. Too little stock can leave a contact face unfinished; unnecessary stock adds cutting time and handling. Agree the allowance with the team that will perform the next operation.
Locating and clamping surfaces also need attention. A good blank must be practical to hold without damaging its cooling features. Where TDB performs secondary operations, the forming and machining plans can be reviewed together through our CNC milling services.
Define material and delivery acceptance
Specify alloy, material condition and the documentation required for the order. Confirm whether acceptance occurs before or after any cleaning, heat treatment or coating included in the supply scope. Do not treat an unspecified aluminum grade as an approved substitute.
Packaging should protect the surfaces needed for later machining and prevent pins or fins from contacting neighboring parts. Inspection records, lot identity and defect limits should be agreed before the pilot delivery.
Explore a blank supply program with TDB Hanoi
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. Feasibility depends on the alloy, geometry, tooling and required final condition; these limits do not establish a guaranteed thermal performance.
Include the final component model as context, alongside the blank drawing and expected batch sizes. This allows TDB to review the primary shape, secondary operations and acceptance scope against the way your factory intends to use the part.
For aluminum heat sink blanks supporting AI power electronics, auxiliary cooling or another defined application, send your drawing to TDB Hanoi for a manufacturing review.
Define the supplied component
| Review item | Information to agree |
|---|---|
| Delivered item | Blank, partly machined component or finished mechanical part |
| Machining allowance | Stock and locating faces agreed with the next operation |
| Material evidence | Alloy, condition and required lot documentation |
| Protection | Packaging for formed features and functional surfaces |
Review these inputs for aluminum heat sink blanks against the controlled drawing, rather than treating a process description as an acceptance specification.
Frequently asked questions
Can we perform the final machining ourselves?
Yes. Identify your operations and required machining allowance so the delivered blank can be reviewed for that route.
Does a formed blank have an approved cooling rating?
Not by itself. The finished design, interfaces and operating conditions determine the required thermal qualification.
What should accompany a blank RFQ?
Send the blank drawing, finished-part context, material requirements, quantities and acceptance criteria.
Continue your technical review
Read Cold forged aluminum heat sinks: OEM guide, explore the Impact Extrusion knowledge center, or request a TDB Hanoi manufacturing review.