High Density Die Casting (HDDC): new frontiers in the manufacturing of heat sinks

Eurotherm Seminar 102: Thermal Management of Electronic Systems

物理学;无线电电子学

Sce, Andrea^1 ; Caporale, Lorenzo^1

Aavid Thermalloy S.r.l., Via del Fonditore 4, 40138 Bologna, Italy^1

关键词: 3-d designs;    Die casting process;    Embedded heat pipes;    Heat spreading;    High volumes;    Power densities;    Thermal management problems;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/525/1/012020/pdf
DOI  :  10.1088/1742-6596/525/1/012020

来源: IOP

【 摘 要 】

Finding a good solution for thermal management problems is every day more complex. due to the power density and the required performances. When a solution suitable for high volumes is needed. die-casting and extrusion are the most convenient technologies. However designers have to face the well-known limitations for those processes. High Density Die Casting (HDDC) is a process under advanced development. in order to overcome the extrusion and traditional die casting limits by working with alloys having much better thermal performances than the traditional die-casting process. while keeping the advantages of a flexible 3D design and a low cost for high volumes. HDDC offers the opportunity to design combining different materials (aluminium and copper. aluminium and stainless steel) obtaining a structure with zero porosity and overcoming some of die-casting limits. as shown in this paper. A dedicated process involving embedded heat pipes is currently under development in order to offer the possibility to dramatically improve the heat spreading.