Large radiator - one-stop solution for mold design, aluminum extrusion, and CNC precision machining

1、 Product Overview

    Large radiators are essential thermal management core components in high-power heating scenarios such as industrial electronic equipment, power modules, communication base stations, and new energy equipment. Our company focuses on the full process manufacturing services of large-scale radiator mold design, aluminum profile extrusion molding, and CNC precision machining, providing customers with one-stop customized solutions from drawings to finished products. The product is widely compatible with high-end application scenarios such as AI server GPU heat sinks, computing power cabinet heat dissipation modules, industrial frequency converters, communication power supplies, renewable energy inverters, and high-power semiconductors.
    We take 'independent mold design+precision extrusion molding+high-precision CNC machining' as our core technology chain, equipped with aluminum extrusion equipment ranging from 600T to 1800T. The maximum CNC processing stroke can reach 6.5 meters, which can meet the customized needs of large, irregular, and high-precision heat sinks.

2、 Core technical capabilities 

    （1） Design of large radiator mold Mold is the fundamental guarantee of radiator quality. Our company has the ability to independently develop and manufacture molds. The mold workshop is equipped with advanced precision CNC production equipment such as wire cutting and spark machines, which can produce various types of radiator molds suitable for different tonnage extruders (450T~4000T). In the mold design stage, we introduce CAE metal flow simulation technology to optimize key parameters such as the number and layout of diversion holes, welding chamber structure, and working zone. 

    In response to the structural difficulties of large radiator profiles, such as large differences in cross-sectional wall thickness and long tooth shaped cantilevers (tongue ratio greater than 3), advanced mold solutions such as protective diversion combination molds or flow guiding structure designs are adopted to effectively adjust the flow velocity distribution during metal extrusion, ensure smooth extrusion of profiles, and extend the service life of molds.

(2） Aluminum alloy profile extrusion molding 

    Our company has multiple large-scale aluminum extrusion production lines, which can produce radiator profiles with a maximum outer circle diameter of 350mm. High quality aluminum alloy rods such as 6061 and 6063 are selected, and undergo a complete process including homogenization treatment, heating, extrusion, online quenching, stretching straightening, and cutting to length to ensure dense microstructure and excellent mechanical properties of the profiles. 

    In response to the characteristics of large radiators with multiple teeth, uneven tooth height, and wall thickness, we strictly control the extrusion speed, outlet temperature, and cooling rate during the extrusion process to avoid tooth bending deformation or grain coarsening, resulting in good thermal conductivity and dimensional stability of the finished product.

（3） CNC precision machining 

    The extruded profile needs to undergo multiple CNC precision machining processes to meet the assembly accuracy requirements. Our company is equipped with three-axis, four axis, and five axis linkage machining centers, which can achieve one-time clamping completion of complex processes such as milling, drilling, tapping, boring, end face milling, chamfering, etc. 

    The processing accuracy can reach ± 0.01mm, the flatness is controlled within 0.05mm, and the roughness is better than Ra1.6 μ m. For large radiators, we also provide subsequent processing such as grooving, cutting, sanding, drawing, polishing, etc., and can complete surface treatments such as anodizing, electrophoretic coating, powder coating, etc. according to customer needs to improve the corrosion resistance and appearance quality of the radiator.

3、 Product advantages

    The mold is independently designed with a short mold opening cycle, and the success rate of one trial mold is higher than the industry average.   
    The extrusion production capacity is sufficient to undertake small batch trial production and large batch orders, with flexible delivery cycles.
    The large-scale CNC machining equipment can handle super long heat sinks up to 6.5 meters in length, meeting the needs of high-power equipment.
    Full process quality control, from aluminum rod composition testing, mold size inspection, extrusion online monitoring to CNC finished product coordinate measurement, with layer by layer checks.
    Provide full process technical support from structural optimization suggestions, heat dissipation simulation to batch delivery, helping customers reduce overall costs.

4、 Typical application areas

    New Energy and Energy Storage: Cooling of Photovoltaic Inverters, Wind Power Inverters, and Energy Storage Inverters.
    Power electronics: frequency converters, servo drives, reactive power compensation devices.
    Communication equipment: 5G base station RF unit, data center switch heat dissipation.
    Rail transit: traction converter, auxiliary power dissipation.
    Medical equipment: high-power CT and X-ray machines for heat dissipation.
    Artificial Intelligence: AI training server CPU/GPU cooling module.

5、 Customized process

    Customers provide product drawings or technical requirements.

    Our technical team conducts structural review and mold design. 

    Mold manufacturing and testing, providing samples for customer confirmation. 

    Batch extrusion production and CNC precision machining. 

    Surface treatment and inspection.

    Packaging and shipping, providing inspection reports. 

6、 Why choose us

    We have been deeply involved in the field of large-scale radiators for many years, accumulating rich experience in mold design and extrusion processing, and can provide customers with a true full chain service from an aluminum rod to a finished radiator. Whether it's complex tooth profiles, ultra long dimensions, or high-precision requirements, We can all provide reliable technical solutions. Welcome new and old customers to come with pictures and samples. We will provide you with quick quotes and professional advice.