Brazing process
Vacuum and Tunnel Brazing Process for Liquid Cold Plates
This page explains how vacuum brazing and tunnel brazing are used to manufacture liquid cold plates with machined channels, covers, fins, and manifolds. For product options, RFQ requirements, and drawing review, use the dedicated brazed cold plate quotation page.
Process role
What brazing does in a cold plate
Vacuum brazing or tunnel brazing can join a base plate, cover plate, internal fins, and manifold features into one sealed liquid cooling assembly. The route is reviewed when a project needs compact internal flow paths or more heat transfer area than a simple tube-in-plate structure.
Manufacturing route
Engineering checks before a brazed cold plate is released
Material and surface review
Material selection, brazing compatibility, plating, cleaning, and coolant compatibility should be confirmed before quotation.
Channel and fin geometry
Channel depth, wall thickness, fin area, pressure drop target, and port layout are reviewed against the drawing.
Sealing and inspection plan
Leak test, pressure check, cleanliness, flatness, and surface requirements should be defined before production.
When to use
Where brazed cold plates fit
Vacuum brazing and tunnel brazing are manufacturing routes among several custom liquid cold plate options. The final choice depends on heat load, channel complexity, material, cost target, and inspection needs.
- Compact internal channels and manifolds
- Higher heat transfer area with fins or pins
- Sealed liquid cooling structures for power electronics
- Application-specific mounting surfaces and ports
Process comparison
Use the process page for route selection, then move to RFQ
This page explains how brazing routes work. The product page explains what brazed cold plates BY Thermal can quote from drawings.
| Process page | Use for vacuum brazing and tunnel brazing process explanation, manufacturing sequence, and engineering considerations. |
|---|---|
| Product and RFQ page | Brazed cold plates is the main product and drawing quotation page. |
| Related options | Compare embedded tube cold plates and FSW cold plates when the drawing may fit a different manufacturing route. |
RFQ handoff
Send drawings to quote the actual cold plate
For quotation, BY Thermal needs the part drawing and operating requirements. The RFQ should be submitted through the brazed cold plate product page or contact page.
FAQ
Brazed cold plate process questions
Is this page the product quotation page?
No. This page explains vacuum brazing and tunnel brazing process routes. The product and quotation page is Brazed Cold Plates.
What is a brazed liquid cold plate?
It is a liquid cooling plate made by joining prepared metal parts through a brazing process such as vacuum brazing or tunnel brazing to create sealed internal coolant passages.
When should engineers consider brazing?
Vacuum brazing or tunnel brazing is often reviewed when a drawing needs internal channels, compact heat transfer structures, manifolds, or sealed multi-part liquid cooling geometry.
Can BY Thermal review an existing drawing?
Yes. Send drawings, thermal load, coolant data, material preference, pressure requirements, and quantity for manufacturability review.
Need to quote a brazed cold plate?
Use the product RFQ page so the drawing, material, coolant, and inspection details are reviewed together.