Discussion on the development of copper-aluminum composite radiator

Aluminum alloy profiles are widely used in China's construction industry because of their high strength, water tightness and air tightness, good heat conduction, exquisite appearance and easy processing. In particular, its excellent thermal conductivity has been valued by many high-power radiator manufacturers in recent years. Explosion-proof heat pipe radiator

Material material thermal conductivity, thermal conductivity is as follows: copper: 0.94 pure aluminum: 0.53 aluminum alloy: 0.37 cast aluminum: 0.33 steel: 0.16 cast iron: 0.12 stainless steel: 0.05 copper chemical properties are inactive, with the same family of precious metals such as gold and silver, stability Next to gold and silver, copper has a melting point of up to 1083 ° C, and at -183 ° C, it also has the same properties as at room temperature. Relevant literature records: The bronzes used by the ancient Egyptians 3,000 years ago unearthed from the Egyptian pyramid are still shining as new and can still be used. It can be seen that the corrosion resistance of copper under normal medium conditions is very strong.

Obviously, the copper-aluminum composite radiator is a new energy-saving product that is in line with national conditions and is economical, simple and safe.

The composite process of copper tubes and aluminum sheets has been the focus of debate. More hydraulic fluid expansion and mechanical swell are now used. However, due to the mechanical bulging, the alloy expansion head with fixed geometrical dimensions is slowly passed through the inner cavity of the copper tube, and the copper tube is composited with the aluminum material by the expansion force of the alloy head, because the geometrical size of the alloy expansion head is relatively fixed, and the aluminum The inner diameter of the cavity of the fin profile cannot reach the precision dimension of the alloy expansion head, so the copper tube and the aluminum material cannot be completely combined. The water pressure tube is injected into the inner cavity of the copper tube by water pressure, so that the copper tube is closely combined with the aluminum material, and the copper tube is uniformly expanded outward by adjusting the pressure, so that the copper tube is tightly combined with the aluminum material.

Economical and decorative Because the thermal conductivity of copper and aluminum is very good, the heat dissipation capability of copper-aluminum heatsink is much higher than that of other materials, and its heat price ratio is much higher than that of other materials. Since copper and aluminum are all non-ferrous metals, its value is increasing with time, so the copper-aluminum composite heat sink has a higher preservation rate than other materials.

Aluminum alloys can be extruded into various shapes, so the appearance of copper-aluminum composite heat sinks can be varied to meet the consumer's consumption philosophy. Copper-aluminum composite radiator, due to its superior anti-corrosion performance, wide applicability, better heat price ratio, high preservation rate and beautiful appearance, will become the leading type of new radiator for a long time in the future. The market prospect is also very broad. With the continuous development and promotion of copper-aluminum composite radiators, it will play a greater role in the development of the industry.