Several major misunderstandings about buying a radiator

Misunderstanding 1: Copper radiator (or aluminum radiator) does not corrode

Generally speaking, copper has better corrosion resistance than steel, but under certain circumstances, copper radiators will also corrode. For example, if there is silt, excessive sulfur content in the system, or the selected copper surface has a carbonized layer Etc. will cause corrosion of the copper radiator. In addition, due to the different corrosion principles of materials, although aluminum radiators have strong oxidation and corrosion resistance, they are prone to alkali corrosion and chloride ion corrosion. Therefore, when the water quality of a heating system is alkaline (PH value higher than 8) , Or when the chloride ion content is high (the salt content is large), the radiator has the hidden danger of corrosion and water leakage.

　　 Misunderstanding 2: Leaking heating is a problem with the radiator

During the heating season last winter, several more radiator leaks were exposed by the media. This also caused the China Construction Metal Structure Association Heating Radiator Committee to attach great importance to it and actively responded: the association organized Sende, Italy Sharp. The person in charge of the radiator of Jintaige, Florence, Huarui and other brand radiators studied "radiator life and system problems" and found some "symptoms" of radiator leakage. Experts at the meeting believed that complicated heating water quality, mixed installation problems of radiators, and installation problems may cause the heating radiators to leak or not heat up. In addition, in the non-heating season, the heating radiator should be filled with water for maintenance, otherwise it is easy to bury hidden dangers. “Draining the water in the heating system during the non-heating season will cause rapid corrosion of steel radiators, boilers, water pumps and valves, and will also cause blockage of products such as radiator temperature control valves and heat meters.” An expert said in this analysis. .

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

　　The cast iron radiator is not easily damaged by corrosion, because the cast iron itself has good oxidation and corrosion resistance, not because of the wall thickness. In recent years, some small domestic manufacturers have tried to solve the anti-corrosion problem of steel radiators by increasing the wall thickness. This is wrong. Because the corrosion of steel radiators is local corrosion of small holes, rather than uniform corrosion. If according to their theory, if the 1.3mm steel plate is corroded and perforated in 3 years, then the 2.0mm steel plate will definitely be corroded and perforated within 5 years, which is also far from meeting the user's requirements for the life of the radiator.　In addition, there are some radiator manufacturers on the market vigorously promoting their radiator products "no welds, clean and smooth inner cavity" and so on. In fact, this has no effect on the corrosion resistance of the radiator. Because the corrosion of the steel radiator does not occur on the weld, this is because the corrosion of the steel radiator is oxygen corrosion, so "no weld or smooth cavity does not mean that there is no corrosion."

　　 Misunderstanding 4: Internal coating is equal to anti-corrosion

　　In the radiator market, the salesperson must call it "corrosion". In fact, up to now, the common internal coating anticorrosion types in the domestic radiator market are nothing more than two: "organic coating" and "inorganic coating". Generally speaking, the cost of inorganic coatings is higher than that of organic coatings, the process is more complicated, the process requirements are stricter, and the anti-corrosion effect is better than that of organic coatings. Of course, there are also two processes on the market that combine two processes into one. For example, the second-generation anti-corrosion product of Huarui produced by Tianjin Huarui Nuanjia is based on an inorganic coating and an organic coating, double coating. Multiple protection, more secure.

　　 Misunderstanding 5: The more fancy and weird the product, the more decorative

　　 Although the unique shape of the radiator increases the decoration and meets the individual needs of people, it is not the same as being too fancy and weird. For example, the market is full of radiators with shapes such as "vase type", "violin type" and "moon type". Not to mention the rough workmanship, it is difficult to harmonize with other furniture in the living room. There are also excessively thin and excessively curved pipes. Obviously affect its heat dissipation function.

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

　　 When consumers buy heating and accessories, it is best to choose powerful large companies and famous brand products. The place of purchase should be large building materials supermarkets and regular brand specialty stores. Don't be greedy for cheap, or save trouble, buy a radiator in the neighborhood, street shop, or private hands. According to the information reported by multiple manufacturers, it is most prone to problems when buying a radiator at a temporary sales point in a community: a problem with the radiator in the consumer’s home is reported to the manufacturer, but the manufacturer finds that the radiator brand is counterfeit, or Commodities flowing into the market through illegal circulation channels.