Copper and aluminum connecting pipe product quality advantage

Lifespan: It has been more than 20 years since the domestic and foreign large refrigerator companies used aluminum tubes. It turns out that the refrigerant is not corrosive to the aluminum tubes, and the refrigerant will not leak through the inside of the aluminum tubes. However, due to the corrosion of the outer surface of the aluminum tube, the outer surface of the copper-aluminum connecting tube is protected by cross-linked polyethylene. The cross-linked polyethylene material is a material used for wire insulation by nuclear power plants. The product quality is stable and the degradation period is over 20 years. . Because the Copper Tube does not do any anti-corrosion treatment, it is said that the service life of the copper-aluminum connecting tube is higher than that of the copper tube.

Good insulation performance: the Air Conditioning Connecting Pipe needs to be insulated. In order to improve the energy efficiency ratio of the air conditioner, the insulation performance of the connecting pipe should be further improved. The thermal conductivity of the aluminum tube is 2.34W/(cm.°C), which is not as good as the copper tube 3.97W/(cm.°C). The aluminum tube is more suitable for the Air Conditioning Connecting Tube, plus the outer layer of the cross-linked polyethylene tube for preventing corrosion. Insulation, copper and aluminum connecting tube insulation performance is better than copper tube.

Welding quality: the copper-aluminum connecting pipe adopts the structure of the copper pipe at both ends of the middle aluminum pipe, the copper-aluminum connecting method adopts the plug-in welding joint, and the copper-aluminum pipe has a copper-aluminum welding zone of 5 mm width between the copper and aluminum pipes, and the copper-aluminum welding zone between the copper and aluminum pipes is realized between the copper and aluminum pipes. The mutual penetration and diffusion between atoms, the welding area is large, the joint strength exceeds the aluminum tube and the copper tube, and the leakage rate of the welded joint is less than 0.001%. Compared with the allowable failure rate of 0.016% of the copper connecting tube, the tube of the copper-aluminum connecting tube The road compactness is not lower than that of the copper pipe, so the risk of leakage using the copper-aluminum connecting pipe is very low.

Installation performance: The installation performance of the connecting pipe mainly depends on the flexibility and bending performance of the pipe: the aluminum pipe is softer than the copper pipe, and the design wall thickness is 1.5 times that of the copper pipe. The flexibility of the aluminum pipe is better than that of the copper pipe. Not easy to fold. The cold work hardening tendency of the aluminum pipe is lower than that of the copper pipe, so the aluminum pipe is less likely to be broken. If the air conditioner using the copper-aluminum connecting pipe needs to be moved, the transfer installation performance is better than that of the all-Copper Connecting Pipe.

Safety performance: The allowable bursting pressure of the copper-aluminum connecting pipe is the same as the allowable bursting pressure of the all-copper connecting pipe. The design pressure is 13.0Mpa, and the 13.0Mpa is three times the maximum working pressure of the air-conditioning pipe system. Therefore, the copper-aluminum connecting pipe is used. No injuries will happen.