This CFMOTO ATV voltage regulator heat sink is a precision aluminum alloy part made through a combination of die casting and CNC finishing. Its manufacturing process directly determines the product’s performance and quality:
It first takes shape via high-pressure die casting: Molten aluminum is injected into the mold in one go, and after rapid cooling, a blank with dense cooling fins and a shell outline is obtained. This step allows the complex heat dissipation structure (thin fins + irregular shell) to be mass-produced efficiently while ensuring the overall strength of the part.
Next comes CNC finishing: Precision milling, drilling, and tapping are performed on key areas like mounting holes and positioning surfaces, controlling the dimensional accuracy of these mating parts within 0.05mm. This step ensures the heat sink can accurately match the internal components of the voltage regulator, while guaranteeing a tight fit with the vehicle during installation.
Finally, surface treatment (such as black anodization) is applied: This not only enhances heat dissipation efficiency but also makes the shell more corrosion-resistant.
In short, die casting is responsible for realizing the complex structure, while CNC ensures assembly precision. The combination of the two allows it to dissipate heat efficiently and fit the vehicle stably.
