Copper is one of the most thermal conductive metals so it's the best material for heat sink manufacturing, As the electronic industry is thriving, the size is becoming smaller and the power is higher, so the heat dissipation efficiency need to be improved accordingly, the conductivity of copper is about 380W/m-k, due to the excellent thermal properties , Pure copper CPU heatsink is the main stream for the high power CPUs and GPUs. To deal with different CPU thermal issues, there are several main types of pure copper CPU heatsinks.
Copper fin and plate soldering heatsink
This kind of heatsink is used in high power CPU applications, it's soldered by copper fins and copper base, usually the heat sink assembly would be embed heatpipes to improve the thermal transferring ability, the fins are stamped by high speed stamping machine, the plate is machined by CNC, the soldering process is gathering the copper fins and base into a fixture and put it into the reflow ovens to connect them by the soldering paste, this type of heatsink is the one of the best thermal design in air forced thermal solutions.
Copper skived fin heatsink
As copper could not be extruded like aluminum, to achieve a solid copper heatsink, skiving process is one of the best methods, Skiving technology is peeling the fins from a solid metal bar and push the fins vertically, compared with extrusion technology, skiving fin process has no limitation on fin thickness, ratio aspect. Skived fin heatsink can produce very thin and high density fins which means it can generate more surface area to dissipate the heat, furthermore, the fins are created from the base, so the fins and base has no joint interface, and the thermal resistance is low which enable the absorbed heat to spread to fins much faster to improve the thermal performance. Copper skived fin heatsink is a classical heatsinktype of pure copper CPU heatsink
Copper cold forged heatsink
A forged heatsink is manufactured by cold forging process which uses high pressure punch machine to press the heatsink shape from a raw copper at low temperature to make sure no air bubbles or other impurities inside, which improves the density of the material and make the thermal conductivity properties better. Usually the cold forged heatsinks are produced by utilizing a custom tooling die to achieve the customized dimensions, the most common copper cold forged heatsink is copper pin fin heatsink, which can provide a good thermal performance when the ambient air flow is not stable. Cold forging technology is very common and widely used as it's high volume output, and mature process.
FAQ
Q: Can I place a sample order?
A: Yes, sample order is available.
Q: What is your lead time?
A: It depends on the order quantity.
Q: What is your payment term?
A: T/T,Letter of Credit or Paypal.This is negotiable.
Q: What is the shipping method?
A: It could be shipped by sea,by sea or by express(EMS,UPS,DHL,TNT,FEDEX and ect). Please confirm with us before placing orders."