Mistake 1: copper radiator (or aluminum radiator) does not corrode

Generally speaking, the corrosion resistance of copper is better than that of steel, but under certain environment, the copper radiator will also have corrosion. For example, if there is too much sludge and sulfur in the system, or the selected copper surface is attached with a carbonized layer, etc., the corrosion of the copper radiator will be caused. In addition, due to the different corrosion principles of materials, although the aluminum radiator has strong anti-oxidation corrosion ability, it is prone to alkali corrosion and chloride ion corrosion. Therefore, when the water quality of a heating system is alkaline (pH value is higher than 8), or the chloride ion content is high (salt content is large), the radiator will have the potential of corrosion and water leakage.

Mistake 2: heating water leakage is the problem of radiator

In the heating season last winter, several more radiator leakage accidents were exposed by the media, which also attracted the attention of the heating radiator Committee of China Building Metal Structure Association and made a positive response: the association organized sende and yisapu. The enterprise leaders of radiator brands such as jintage, Florence and Huarui discussed "radiator life and system problems", and found out some "diseases" of radiator leakage. Experts at the meeting believe that the heating water quality is complex or the radiator is mixed with the problem of installation, which may lead to the leakage or non heating of the heating radiator. In addition, in non heating season, the heating radiator should be full of water for maintenance, otherwise it is easy to bury hidden dangers. "In the non heating season, the water in the heating system will be drained, which will lead to the rapid corrosion of steel radiator, boiler, water pump and valve, as well as the blockage of radiator temperature control valve, heat meter and other products." According to an expert.

Mistake 3: product wall thickness (or no weld or smooth inner wall) is not afraid of corrosion

Cast iron radiator is not easy to be damaged by corrosion because of its good anti-oxidation performance, not because of the wall thickness. In recent years, some small domestic manufacturers try to increase the wall thickness to solve the anti-corrosion problem of steel radiators, which is wrong. Because the corrosion of steel radiator is local corrosion of small holes, not uniform corrosion. If according to their theory, if the 1.3mm steel plate is corroded and perforated in three years, then the 2.0mm steel plate will certainly be corroded and perforated in five years, which is also far from meeting the user's requirements for radiator life. In addition, some radiator manufacturers in the market are vigorously promoting their radiator products "no weld, clean and smooth inner cavity" and so on. In fact, it can not play a role in the anti-corrosion of radiator. Because the corrosion of steel radiator is not on the weld, because the corrosion of steel radiator is oxygen corrosion, so "no weld or smooth inner cavity does not mean no corrosion".