LED Cold Forging Aluminum COB Heat Sink For Down Light

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.

The led cold forging cob heat sink is made of 1070 pure aluminum with a thermal conductivity of 226m. K, and the blade can be 0.8 thick to increase the heat radiation surface area of the product. The integrated heat sink with the same volume and shape can be used for the heat dissipation of larger power products, and it is lighter in weight and saves more transportation costs.

This process is an integrated structure and in most cases we use a "cold forged" process. We insert the aluminum alloy material into the forging die through high pressure.

Through cold forging process, we can produce accurate size, solid surface, reliable structure of the heat sink. And can make the heat sink fin higher, thus expanding the cooling area. One of the classic applications is in the field of leds.

● high aspect ratio or a dense heat sink fins maximize surface area

● cold forging materials can come in many sizes

● one operation can form a round pin, hole and standoffs on the forging die

● round shape heat sink (very suitable for LED cooling)

Cold forging technology has been widely used by heat sink manufacturers in the production of light source heat sinks and LED heat sinks. ZP 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, ZP 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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Forged heat sinks are made by modifying this process (called cold forged). Cold forged is a manufacturing process in which aluminum or copper heatsinks are formed by the use of local compression forces. Cold forging uses high pressure and low temperature to ensure that there are no bubbles, pores or other impurities in the material. This improves the thermal performance of the heat sinks and increases the density of the materials, thus produces high quality products. LORI uses special die opening tools and great pressure to produce high precision heat sinks with high aspect ratios. Forged heat sink is usually manufactured one part at a time and material can be made from AL 6063 or C1100. A maximum aspect ratio of 35:1 is feasible and no draft angle is required on the fin. Cold forging fins can be round, elliptical, straight or any combination on the same part. Aspect ratio up to 35:1 are feasible, and no draft angles required on fins.

Cold Forging Hydraulic Press

1. 1500T/500T four-column hydraulic press

2. High precision forging mould

3. Direct processing without heating

4. Equipment stroke: product height<120, product diameter < 200

CNC drilling and milling machine

• High precision drilling, tapping, face milling

• Special drilling and tapping chamfering, high efficiency

• Fully automatic data processing, the size is guaranteed

• Equipment stroke: can process 800mm long, 400mm wide, multi-axis processing

CNC Lathe

• Aluminum machine for special vehicle, high efficiency

• Can be car shape, curved surface, high light

• Special fixture, quality assurance

• Equipment stroke: products with a diameter of 500mm can be processed

ZP GROUP CO LTD is a professional manufacturer since year of 2005 specialized in the production of aluminum extrusions and various metal fabrications. We have Two Production Bases covering an area of 50000 SQM with more than 300 staff of experienced  R&D team, production team and QC team. With these capabilities we can supply you a comprehensive solutions for various Heat Sink Manufacturing and assure your projects have fine performance in thermal management . 

Our Heat Sinks are customized and widely applied in Server, Telecommunication, Automotive, Infrastructure, Power Supply, LED Lighting, Medical Equipment and other products and industries. The products are exported to global market, getting the majority of customer trusts and praise.As an experienced contract manufacturer with a broad range of metal fabrication capabilities, we can provide you with a single-source solution that reduces the lead times and lowers your overall project costs.

Manufacturing Capacity

ZP has two production bases covering an area of 50000㎡ with 12 extrusion lines、30 CNC machines, anodizing lines.Advanced production equipment and experienced production staff ensures the quality and production efficiency. 

Quality Control

Quality is taken into account since product design through the whole product life-cycle.With professional design procedure, simulation and over 30 type test, from incoming parts inspection to out-going heat sink inspection during production. 

● ISO9001:2015 Certificate

● 100% online QC and final QC

● Strict and fully implimented quality control standard.

With abundant comprehensive strength and high quality service, our products have been well sold all over the country and exported to many countries and regions including Italy, England, Germany, Burma, Thailand, Brazil, Argentina, Canada, America and Mexico. 

ZP HEAT SINK sticks to the scientific development perspectives, and keep improving the energy conservation and emission reduction of the enterprises by intensifying comprehensive management and enhancing innovation to accelerate in becoming an eco-friendly modern enterprise.ZP HEAT SINK insists on the operation tenet of "unity and enterprising, exploring and innovation" to fully cooperate with customers, explore the career and create a wonderful future together.

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