Cold forging is to recrystallization temperature of profile below (generally refers to room temperature) forming processing, forging technology. Cold forging material is mostly below room temperature deformation resistance is lesser, plasticity better aluminum and partial alloy, copper and partial alloy, cold forging can make profile produces work hardening in processing process (strain hardening), can make intensity and hardness increase.Cold forged heat sink is a good choice for casting complex shapes with excellent thermal conductivity. The cold forging process allows an almost perfect straightness of more fins per square millimeter. The shapes of cold forged heat sink include plate fin heat sink, round pin heatsink and oval fin heat sinks.The manufacture of forged heat sinks are well suited to the use of copper because the copper heatsinkcan be shaped without high temperatures and can be formed with minimal damage. Cold forging heatsink manufacturing can often include secondary processing operations such as holes, chamfering and steps to reduce unnecessary waste.Cold forging technology has been widely used by heat sink manufacturers in the production of light source heat sinks and LED heat sinks. LORI is one of the few companies who used cold forging to produce heat sinks in early days and we have accumulated abundant experience of cold forging technology. In addition to the production of heat sinks for typical light sources, LORI has gained experiences in the manufacturing techniques for high power cold forged heat sink. We have resolved the problems such as the low thermal conductivity of die-casting micro-channels and higher costs for machining micro-channels. We have already applied cold forging heatsink to cooling solutions including high-voltage inverters, wind power converters, and electric motor controllers.
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