Generally speaking, copper has better corrosion resistance than steel, but under certain circumstances, copper radiators will also be corroded. For example, if there is mud in the system, excessive sulfur content, or the surface of selected copper with carbide layer will cause the corrosion of copper radiators. In addition, because of the different corrosion principles of materials, although aluminium radiators have strong anti-oxidation and corrosion ability, they are prone to alkali corrosion and chloride ion corrosion, so when the water quality of a heating system is alkaline (PH value is higher than 8), or when the chloride ion content is high (salt content is large), the radiator will have the hidden danger of corrosion leakage.

Myth 2: Heating leak is a problem with radiator

In this heating season, several radiator leakage accidents have been exposed by the media, which has also attracted the attention of the Heating Radiator Committee of China Building Metal Structure Association and actively responded: the association organized the heads of Sunde, Jintaige, Florence, Reiterg and other brands of radiators to discuss "radiator life and system problems", and found out the radiator leakage. Some "diseases". Experts at the meeting believed that the heating water quality is complex or radiator mixing problems, installation problems may lead to leakage or heat of heating radiator. In addition, in the non-heating season, the heating radiator should be full of water maintenance, otherwise it is easy to bury hidden dangers. "In the non-heating season, the water in the heating system will be emptied, resulting in rapid corrosion of steel radiators, boilers, pumps and valves, and also lead to blockage of radiator temperature control valves, heat meters and other products." An expert said so.

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

Cast iron radiator is not easy to be corroded, because cast iron itself has good corrosion resistance, not because of corrosion resistance. For wall thickness. In recent years, some small manufacturers have tried to solve the problem of anti-corrosion of steel radiators by increasing wall thickness, which is wrong. Because the corrosion of steel radiators is local corrosion of small holes, rather than uniform corrosion. According to their theory, if 1.3mm steel plate corrodes and perforates in three years, then 2.0mm steel plate will corrode and perforate in five years, which is also far from meeting the user's requirements for radiator life.

In addition, there are some radiator manufacturers in the market to promote their radiator products "no weld, clean and smooth inner cavity" and so on. In fact, this does not play a role in the anti-corrosion of radiators. Because the corrosion of steel radiator does not occur on the weld, this is because the corrosion of steel radiator is oxygen corrosion, so "no weld or smooth inner cavity is not equal to no corrosion".

Misconception 4: Internal coating is equivalent to anticorrosion

In the radiator market, sales staff must be called "anti-corrosion". In fact, up to now, there are two kinds of common anti-corrosion coatings in the radiator market: "organic coatings" and "inorganic coatings". Generally speaking, the cost of inorganic coatings is higher than that of organic coatings, the process is complex, the process requirements are strict, and the anticorrosive effect is better than that of organic coatings. Of course, there are also two kinds of technology in the market, such as Sunde Infinite Second Generation Antiseptic Products produced by Beijing Sunde, which is to add an organic layer, double coating, multiple protection and safety on the basis of inorganic layer.

Myth 5: The more fancy the product, the more decorative it is.

Although the radiator with unique shape adds decoration and meets people's individualized needs, it is not beautiful to be too fancy and weird. For example, the market is full of "vase type", "violin type", "moon type" and other shapes of radiators, rough workmanship, not to mention, in the living room is also difficult to coordinate with other furniture, there are too thin and excessively curved pipes will affect its heat dissipation function.

Myth 6: Where to buy famous brand products is the same

When consumers purchase heating and fittings, they should choose large enterprises and famous brand products with strong strength, and purchase places should be in large building materials supermarkets and regular brand stores. Don't buy radiators in a neighborhood, in a street store or in private hands for the sake of cheapness or economy. According to the information reflected by many manufacturers, it is easy to buy radiators at temporary sales points in the community: consumers have problems with radiators at home, which are reflected in manufacturers, but manufacturers find that radiator brands are counterfeit, or illegally circulated goods to the market.