In the process to manufacture a die cast heatsink, two halves of a die are required in the die casting process. One half is called the “cover die half” and the other is called the “ejector die half”. A parting line is created on the part where the two die halves meet. The die is designed so that the finished casting will slide off the cover half of the die and remain in the ejector half as the die is opened. The ejector half contains ejector pins to push the casting out of the ejector die half.  In order to prevent damage to the casting, an ejector pin plate accurately drives all of the pins out of the ejector die at the same time and with the same force. The ejector pin plate also retracts the pins after ejecting the casting to prepare for the next shot.

High Pressure Die Casting is a cost effective option for high volume solutions required to be light weight and superior cosmetic surface quality. Die Cast heat sinks come out in near net shape and require little to no additional assembly and can range in complexity. Die cast heat sinks are popular in the LED market due to the unique shape and weight requirements and high volume production needs.

Die cast heat sink process:

Pioneer Thermal Quality Assurance:

Inspection tool of Pioneer Thermal:

Pioneer Thermal R&D:

About Pioneer Thermal:

As a heat sink manufacturer in China, Pioneer Thermal is certified with ISO9001, ISO14001 and TS16949, and has a dedicated quality assurance department with full CMM capabilities. We are focused on providing advanced technology, superior customer service and outstanding value to our industry partners.