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Attention to the Problems in the Use of All Aluminum Radiator

1. A dense oxide film will be formed on the surface of aluminum in acid solution to prevent further corrosion, but it will be continuously corroded in alkaline solution. Therefore, choosing neutral or slightly acidic antifreeze can prolong the service life of all aluminum radiator.

2. Generally, aluminum has strong corrosion resistance, and the surface of all aluminum radiator cannot be sprayed with anti-corrosion treatment, but the corrosion resistance to chloride ion is poor. In cold regions, salt will be sprinkled to prevent road freezing in winter; in saline lake areas, some roads are made of salt themselves, and the splashing salt particles on the surface of radiator will produce "pitting corrosion", leading to water leakage. All aluminum radiators used in these areas should be considered for anti-corrosion by painting. The corrosion problem has been considered in the newly developed materials for aluminum radiators. A certain amount of trace elements is added to the strip material to make the heat sink become the anode and the heat sink tube become the cathode. In case of chemical corrosion, the strip material is first corroded to protect the tube material.

3. The core of all aluminum radiator has high strength and large volume expansion after heating. The side plate should have certain deflection or buffer pad is added when connected with water chamber, set aside room for volume expansion.

4. The strength of plastic water chamber is limited, so it should not be used as a load-bearing part. When combined with intercooler and condenser, a rigid frame should be installed separately or made to install all radiator, intercooler and condenser on it.

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