Product Details
Aluminum alloy heat sink die casting is a manufacturing process that uses aluminum alloy material, fills the mold with molten aluminum alloy through high-pressure injection, and then cools and solidifies it. The advantage of this process is that it can accurately shape the complex structure of the radiator, at the same time, the aluminum alloy has superior thermal conductivity, can quickly transfer heat, and improves the efficiency of heat dissipation.
Advantages of aluminum alloy heat sink die-casting
- Light and strong: aluminum alloy radiator die-casting products have lightweight characteristics, not only reduce the overall weight but also maintaining sufficient structural strength, making them an ideal choice for electronic equipment.
- Excellent thermal conductivity: The aluminum alloy radiator's thermal conductivity is better than other materials, can quickly transfer heat to the heat sink, and accelerate the heat dissipation process, effectively protecting the normal operation of the equipment.
- Strong customization: The aluminum alloy radiator die-casting process is flexible and diverse, and can be personalized according to the needs of different equipment, to meet the heat dissipation requirements in different scenarios.
- Energy saving and environmental protection: The aluminum alloy radiator is recyclable and reused environmentally friendly materials, The manufacturing process reduces resource consumption, in line with the modern concept of energy saving and environmental protection.
Aluminum alloy heat sink material
Heat sink aluminum alloy, as the name suggests, is used for heat dissipation of aluminum alloy profiles, mainly used in automobiles, in PCB boards and power cabinets, high-power LED lamps, and lanterns above the heat dissipation. Heat sink aluminum alloy requirements are the heat dissipation performance to be good, there is cutting performance to be good, based on these two points non-6063 aluminum alloy, because this aluminum grade in addition to meeting these two conditions, there is another factor is cost-effective, the cost is relatively low.
In Mindwell, customized heat sinks for customers are almost 6063 grade, and the heat dissipation effect can meet their requirements after testing.
aluminum heat sink enclosure processing technology
Aluminum Die Casting Technology
In addition to aluminum extrusion technology, in addition, is often used to make the heat dissipation process of aluminum die casting, aluminum ingots are melted into liquid, and filled with metal models, using a die casting machine direct die casting molding of the heatsink, the use pressure method can be made into a variety of fins three-dimensional shapes, heatsinks can be made according to the need for complex shapes, but also with the fan and the direction of the airflow to make a diversionary effect of the heatsink and can be made into thin and dense fins The cooling area can be increased by making thin and dense fins because the process is simple and widely used. Commonly used die-casting aluminum alloy for ADC12, due to die-casting molding performance is good for thin castings, but poor thermal conductivity (about 96W/mK), now domestic AA1070 aluminum alloy material as die-casting material, thermal conductivity up to 200W/mK or so, heat dissipation is good.
However, for AA1070 aluminum die-casting radiator, some of its own can not overcome the inherent defects:
- Rhyolite and excessive oxidized slag on the die-casting surface will reduce the heat transfer effect.
- When internal shrinkage is high, thermal conductivity is reduced (K <200W/m-K).
- Mold is susceptible to erosion, shortening life.
- Poor moldability, not suitable for thin castings.
- Soft material, easy to change.
With the CPU frequency continuing to increase, in order to achieve better heat dissipation, the use of the die-casting process to produce aluminum heat sink volume continues to increase, the installation of the heat sink has brought a lot of problems, and this process produces a heat sink effective cooling area is limited, in order to achieve better heat dissipation effect will inevitably improve the fan airflow, increase fan flow will produce more noise.
Aluminum extrusion technology
Aluminum extrusion technology simply put, aluminum ingot heated to about 520-540 ℃, under high pressure so that the aluminum flows through the groove with the extrusion die, so that the radiator early embryo, and then the radiator on the embryo cutting, cutting grooves and other processing after we made the common radiator. Aluminum extrusion technology is easier to achieve, the cost of equipment is relatively low, and it is also widely used in the early low-end market. The commonly used AA6063 aluminum extrusion has good thermal conductivity (~160-180W/m-K) and processability. However, due to its own material limitations, the ratio of fin thickness to length cannot exceed 1:18, making it difficult to increase the cooling area in a limited space, and thus the cooling effect of aluminum heatsinks is poor to compete with today's rising high-frequency CPUs.
Flexible Process
Flexible process by the first copper or aluminum plate, forming the machine into a one-piece heatsink, and then use the puncture mold will be fixed on the base plate, and then use high-frequency metal welding machine, and will be processed base welded together, due to a continuous bonding process, suitable for the thickness of thicker than the heatsink, and the heatsink overall shape, conducive to thermal conductivity of the continuity of the heatsink thickness of only 0.1mm, which can greatly reduce the material requirements, and in the heat Absorption weight maximum heat transfer area. In order to achieve mass production, and overcome at the interface impedance interface, the upper and lower layers of the processing part of the simultaneous feeding, automation has been the process, the upper and lower layers of the joint mining high-frequency welding, material fusion to prevent the interface impedance to establish a high strength, closely spaced heat sinks. Since the method is continuous, it can be mass-produced, and heat transfer efficiency can be improved due to significant weight reduction and improved performance.
Forging Process
The forging process is to heat the aluminum block to the buckling point, using high pressure to fill the mold and form, it has the advantage that the fin height can reach more than 50mm, the thickness of 1mm or less, can be in the same volume to get the maximum area of heat dissipation, and forging is easy to get a very good dimensional accuracy and surface finish. But forging, due to cooling plastic rheology will have neck shrinkage phenomenon, so that the heat sink is easy to have thick and thin, uneven height, which affects the efficiency of heat dissipation, due to the low plasticity of the metal, deformation is easy to produce cracks, deformation resistance, the need for a large tonnage (500 tons or more) of forging machinery, but also because of the equipment and molds of the high cost of the product is extremely high. And because of the high cost of equipment and molds, unless mass production or cost is too high.
Aluminum alloy heat sink die casting application areas
Aluminum alloy radiator die casting is widely used in all kinds of electronic equipment, such as computers, servers, televisions, smartphones, etc., as well as automobiles, new energy vehicles, and other means of transportation. In high-performance processors, graphics cards, chips, and other core components, an aluminum alloy radiator is an indispensable key component.
Summary: The aluminum alloy heat sink die-casting process with its high-efficiency heat dissipation, lightweight and sturdy, and other advantages, become the modern electronic equipment cooling field of choice. With the continuous progress of science and technology, aluminum alloy radiator die-casting technology will also continue to innovate, for the thermal performance of electronic equipment to bring more breakthroughs and enhancement. Choose an aluminum alloy heat sink to die casting, and let your equipment enjoy the perfect experience of efficient heat dissipation!
Hot Tags: aluminum heat sink enclosure, China aluminum heat sink enclosure manufacturers, suppliers, a380 aluminum material properties, Die Cast Aluminium Alloy, Electric Vehicle Die Casting Parts, Precision Machining Aluminum Parts, Structural Die Casting, Casting Engine Parts