Cold forging heat sink
A heat sink made by heating metal materials using cold forging technology and then forging them at room temperature.
What is a cold forging heat sink?
Cold forged heat sinks are manufactured through cold forging processes, in which metal is shaped at low temperatures without the need for extensive heating. This manufacturing method endows the radiator with excellent mechanical strength and dimensional accuracy. Its well-defined heat dissipation fins and optimized structure maximize surface area, achieving efficient heat dissipation and making it the preferred choice for high-performance electronic products and industrial equipment that require reliable thermal management.
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Characteristics of cold forging heat sinks
Aluminum cold forging heat sinks, Series 1 aluminum is generally used because of its high purity and strong ductility. Heating is usually carried out at 100 ° C to heat the aluminum block, resulting in better ductility in the prepared mold cavity. This is because the recrystallization temperature of aluminum is relatively low. Forging at such a temperature can avoid significant recrystallization, maintain the cold working strengthening effect, ensure a tight connection between the bottom of the heat sink and the fin, without cracks or gaps in the middle, and ensure efficient heat conduction
Copper material cold forging heat sink, the cold forging temperature is generally controlled at around 150 ℃. Copper has good ductility and thermal conductivity. Cold forging within this temperature range can achieve high machining accuracy and surface quality, while using cold processing to improve its strength and hardness. It also ensures a tight connection between the fin and the bottom of the heat sink, ensuring high conductivity performance.
The heat sinks produced using cold forging technology will enhance their hardness and strength. During the cold forging process, the metal undergoes plastic deformation, and the internal grains are broken and refined, resulting in an increase in dislocation density and hindering grain slip and deformation, thereby improving the strength and hardness of aluminum and copper. Meanwhile, cold forging can also improve the fiber structure of metals, making their distribution more uniform and reasonable, further enhancing their mechanical properties.
Cold forging heat sink applied to LED lighting
The aluminum heat sink is precisely shaped into a cylindrical or elliptical fin structure, greatly increasing the heat dissipation area and heat transfer spacing space of the fin, which helps to quickly dissipate heat and keep the LED at its optimal operating temperature, thereby extending the service life of the lighting fixture. The cold forging process enhances the mechanical strength of the material, making the radiator highly resistant to impact and vibration, ensuring durability in various environments. At the same time, pure aluminum is easier to perform anodic black and electrophoretic surface treatment, which enhances the heat dissipation and corrosion resistance of LED heat sinksWith high-precision manufacturing processes, these heat sinks can seamlessly integrate with LED components, maximizing heat transfer efficiency. Their smooth surface treatment not only improves heat dissipation performance, but also enhances the aesthetics of LED products. In addition, cold forging minimizes material waste and is an economically efficient solution for large-scale production, making it an ideal choice for LED lighting applications.
Cold forging process heat sink in response to high-density IGBT chip heat dissipation
High density IGBT chips generate a large amount of heat and accumulate during operation, resulting in a sharp increase in chip temperature. The radiator manufactured by cold forging technology has unique advantages, as it can process tightly arranged needle shaped heat dissipation fins (fins). When liquid (usually coolant) flows through these needle shaped structures in the radiator, due to the large surface area of the needle shaped fins, the liquid can fully contact them, efficiently carrying away the large amount of heat generated by the chip, achieving effective cooling of the IGBT chip, ensuring its stable operation within a suitable temperature range, and avoiding performance or even damage to the chip due to overheating.
Provide customers with services regarding cold forging heat sinks
We provide structural design services to our clients, taking into account factors such as chip heating element specifications, heat dissipation requirements, and usage environment. Using professional Ansys Icepak design software, we design optimized cold forging heat sink structures, such as the size and arrangement of needle shaped fins. At the same time, we consider the customer’s required quantity, design long-life cold forging molds, and select suitable mold steel materials to reduce risks in the product production process.We also have many self-developed molds, but we can customize and design molds for customers with different needs. Sometimes, customers’ heat sinks are combined with the appearance structure to meet their diverse needs. In terms of testing, we are equipped with professional testing equipment to conduct thermal performance tests on cold forged heat sinks, such as thermal resistance tests, heat dissipation efficiency tests, etc. We provide customers with detailed test reports to ensure that the products meet quality standards.
