Today, beautifying the home and creating a warm and comfortable living environment for them have become a kind of lifestyle nowadays, but the treatment of radiators by the northern family has become the most troublesome thing.
The traditional radiators are mostly made of cast iron and are heavy and ugly. If they are not installed, they will be incongruous with the environment after the renovation. Therefore, every family should decorate and everyone must install a heating hood, which has become an indispensable decoration for families in the north. program. However, after the installation of the heating hood, new contradictions followed: First, affect the cooling effect and waste of the use of the area; Second, due to the closed nature of the heating cover, regardless of summer and winter, the cover will become a source of filth, bacterial contamination; In addition No matter how high-grade heating cover is installed, because of the high-temperature grilling, in two years, there will be deformation, bulging, etc., and you will have to renew and repent, which takes time and effort and costs money!
Is there a radiator that looks beautiful and can be replaced without a heating hood? Let's take a look at the high-end radiators that are currently mainstream in the market.
High-grade radiators are mainly cast iron, steel, aluminum alloy, and copper-aluminum composite materials.
Cast iron radiator: Because of its low price, corrosion resistance and other advantages, cast iron radiators have long been the leading product on the Chinese market. However, although the cast iron radiator itself has strong corrosion resistance, due to the multiple use of steel joints, there is a tendency for corrosion leakage. Therefore, in recent years, due to the continuous improvement of the manufacturing process of radiators in China, the industry requirements are getting higher and higher, and cast iron radiators will gradually be inferior due to their low pressure, heavy weight, rough shape, and high production energy consumption. Eliminated by the market.
Aluminum alloy radiator consumers choose carefully
Aluminum alloy radiators: At present, aluminum radiators on the market mainly include high pressure and tensile aluminum alloy welding. The aluminum radiators sold on the Chinese market are mainly welded, because the strength of the solder joints is not guaranteed, and there is a problem of leakage. Therefore, consumers are advised to choose carefully.
In addition, consumers are reminded that since the aluminum alloy radiator is not suitable for alkaline water quality, it is not the same as steel, so the aluminum alloy radiator should be prevented from being mixed with other materials.
Aluminum radiators are not suitable for alkaline water quality reasons: Al reacts with alkali in water and alkaline corrosion occurs, resulting in aluminum perforation and radiator leaking. The aluminum radiator is simple in shape and poor in decoration, and it is a low-grade radiator.
Compared with steel radiators, aluminum radiators have lower prices because of differences in raw materials and manufacturing processes; they provide fast heat dissipation and light weight; and aluminum radiators have the disadvantage of causing alkaline corrosion in alkaline water. Therefore, it must be used in acidic water (PH value <7), and most of the boiler water PH value is greater than 7, which is not conducive to the use of aluminum radiator.
Steel radiator replaces cast iron radiator
Steel Radiator: The cast iron radiator was eliminated and replaced by a steel radiator (column, plate, etc.). Steel radiators have been used in Europe for nearly 50 years and now account for more than 80% of the market. Its market share in China is also growing rapidly. In the past, due to the corrosion of all steel radiators in unsafe systems, the water quality requirements for heating systems were stricter. Therefore, in the Chinese retail market, the radiator manufacturers of all brands have made anti-corrosion treatment to the radiators, among which the more famous one is the “Sende unlimited†but due to the fact that China currently has no standard for the implementation of radiator anti-corrosion, so In the market, it is difficult to avoid confusion, and the good and the bad are mixed. Therefore, consumers are reminded to learn and consult as much as possible before buying so as to avoid corrosion problems.
In addition, it is worth reminding that at present, some radiator manufacturers are vigorously promoting their radiator products "no welds" - in fact, this does not play a role in the corrosion resistance of the radiator! Because the corrosion of steel radiators does not occur at the weld seams, this is determined by the corrosion principle of the steel radiators, so "no welds do not equal to no corrosion."
Steel radiator organic coating, inorganic coating double anti-corrosion technology (this is not visible in the election, the picture is the heat sink internal dismantling map, can only choose a reputable brand manufacturers to ensure)
Copper and aluminum composite heat sink
Copper-aluminum composite radiator: This is also a new type of radiator that is more common in recent years. It is a convection type radiator made of a combination of copper pipes and aluminum alloy profiles.
Under normal circumstances, the corrosion resistance of copper is stronger than that of steel, and it is safer. Consumers can use it with confidence. However, it does not rule out the possibility of corrosion occurring in certain circumstances. Responsible manufacturers should also remind consumers that, for example, the "SUNDE COPPER" copper-aluminum composite radiator is clearly marked in the data: " Open-type pressureless boilers, systems with many sludges and some chemical oxygen scavenger such as sodium sulfite may also be corrosive.
High-grade radiator has different radiator selection in different areas
Bathroom - Health, Health
The bathroom is a relatively "secret" place in the family layout, and its decoration should be based on "health, health". Generally used to deal with sleek smooth corners, not easy to hurt people; smooth and delicate, like a mirror, high temperature, no corrosion, no fouling, very easy to clean, with a common towel to wipe, bright as new. The more specialized cleaning brush makes the heating cleaning work simple, quick, easy and thorough.
Children's room should choose a lively style
Children's Room - Lively and Safe
Children's rooms should have the following characteristics: a safe environment, colorful colors, lively furniture shapes, and a reasonable layout suitable for children's habits.
The living room should choose the beautiful and noble radiator integrated with heating and decoration
Living room - beautiful and noble
The living room should choose heating and decoration in one, a beautiful, elegant and elegant radiator. Its soft curve, its smooth and clean appearance, its colorful and colorful colors, and its unique and individualistic form...are simply beautiful artworks! Placed in the room, it's a bit eye-catching.
Kitchen should choose a smooth surface and easy to clean radiator
Kitchen - smooth and clean
Chinese kitchens are heavy smoke, so in China, kitchen furniture must have a feature: smooth surface, easy to clean. Heating is no exception. In northern China's homes, heating cleaning and maintenance is a headache.
Bedroom should choose warm and comfortable style
Bedroom - warm and comfortable
The bedroom is the longest place the owner stays at home. Therefore, the furniture equipment provided therein needs the most prominent health characteristics. Radiator heat is transmitted through convection and radiation. Convection is achieved by the air flowing from the bottom up. Radiative heat transfer is achieved by electromagnetic waves. Like the solar magnetic field, because the air is not a medium during this process, the air is stationary, so it does not cause the indoor dust to fly.
Misunderstanding of Radiator's "Mistanate Mistakes"
Misunderstanding one, "The copper radiator will never corrode"
Under normal circumstances, the corrosion resistance of copper is stronger than that of steel, and it is safer. Consumers can use it with confidence. However, it does not rule out the possibility of corrosion in certain circumstances. Responsible manufacturers should also remind consumers that, for example, the "SUNDE COPPER" copper-aluminum composite radiator clearly indicates in the data: "For open-type pressureless boilers, there are many sludges and some chemical oxygen scavengers are added. Systems such as sodium sulfite may also be corroded."
Misunderstanding two, "wall thickness is not afraid of corrosion"
Cast iron radiators are not easily damaged by corrosion because cast iron itself has good resistance to oxidative corrosion rather than wall thickness. In recent years, some domestic small manufacturers have tried to solve the anti-corrosion problem of steel radiators by increasing the wall thickness. This is totally wrong, and such publicity is also misleading consumers. Because the corrosion of steel radiators are local corrosion of small holes, rather than uniform corrosion - if their theory, if the 1.3mm steel corrosion perforated 3 years, then the 2.0mm steel plate will certainly corrode within 5 years, The same is far from meeting the user's requirements for the life of the radiator.
In recent years, due to the continuous improvement of the manufacturing process of radiators in China, the industry requirements are getting higher and higher. Cast iron radiators will gradually be marketed due to their low pressure bearing capacity, heavy weight, rough shape, and high production energy consumption, which cannot be overcome. Eliminated.
Misunderstanding three, "Aluminum radiators do not corrode"
Because of the different corrosion principles of materials, aluminum radiators have strong resistance to oxidation corrosion, but alkali corrosion and chloride ion corrosion are prone to occur. Therefore, when a heating system, the water quality is alkaline (pH is higher than 7), or chlorine When the ion content is high (large salt content), there is a risk of leakage of the radiator due to corrosion.
In addition, consumers are reminded that since aluminum alloys are more active than other commonly used metals and are prone to electrochemical corrosion, aluminum alloy radiators should be prevented from being mixed with other materials.
Misunderstanding four, "No welds or internal smooth and not afraid of corrosion"
At present, there are some radiator manufacturers in the market to vigorously promote its radiator products "no weld, clean and smooth inside" and so on - in fact, this does not play a role in the corrosion resistance of the radiator! Because the corrosion of steel radiators does not occur at the weld seam, which is determined by the corrosion of the steel radiators due to oxygen corrosion, "there is no weld or smooth inner cavity does not mean there is no corrosion."
Misunderstanding 5, "The inner coating is anti-corrosion"
In recent years, in the radiator market, sales personnel have said to be "anti-corruption", peddling all kinds of words to consumers, and providing a variety of proofs that make consumers dazzled and confused.
At present, domestic common paints used for internal anti-corrosion in radiators fall into two categories. One category is inorganic coatings, represented by zinc-based chromium salts, some of which have undergone shot-blasting treatment. Radiator interiors are free of rust and dirt to ensure coating quality. The coating and the substrate are chemically bonded at high temperatures, and have strong adhesion and are not easily peeled off. However, its process requirements are extremely stringent, and the quality of its coating can be guaranteed by strictly controlling various process parameters.
The other coatings are organic coatings, such as the YDR type provided by the Beijing Nonferrous Metal Research Institute and the TY3318 type Wuhan Materials Research Institute. At present, most domestic brands of heat sinks on the market use these two organic coatings. This kind of coating is mainly achieved by isolation, not allowing direct contact of the water with the substrate. However, the coating and the body are glued together (physically combined) like a glue, and the surface treatment of the substrate is required to be high, otherwise the coating is likely to peel off.
In order to save costs, most manufacturers also dispense with certain processing steps, the surface treatment cannot meet the requirements, and the coating thickness does not exceed 30 micrometers. So many radiators on the market have been painted on the market. When they are soaked in hot water for about five days, there is a large area of ​​foaming. The coating begins to peel off and the heat sink substrate rusts. How can one anticipate its antiseptic properties? ! In order to remind consumers to choose an anti-corrosion radiator, we must carefully select it and do not rely on the publicity of the business.
Myth 6, "As long as the brand-name radiator is there to buy the same"
This is a very common problem. "Beijing Evening News" has disclosed two cases of radiator leakage, the final treatment is caused by non-standard installation, the manufacturer has no responsibility, consumers can only find sellers claims, adding a lot of trouble.
Radiator heating system has the characteristics of high technical content, long use time, easy to cause joint loss due to problems, so the installation quality and after-sales service become the second life of the radiator. Therefore, when consumers buy heating and accessories, it is best not to use small companies or small brands that are not credible, or to go to street shops (not to be purchased by floating people), and consumers are not encouraged to install them. Good selection of large companies and brand-name products with strong capabilities, the purchase location should be selected in large-scale building materials supermarkets or specialty stores, and radiator manufacturers or sales staff professionals should be installed at the door to ensure that the long-term interests of users are not compromised.
Lapping welding
Steel radiator is not suitable for direct coal-fired boiler heating
There are three types of heating methods currently available in China: Heating Group Heating, District Boiler Heating, and Home Heating.
District Boiler Heating: This type of heating method is generally a residential self-built boiler house that heats households by burning natural gas, fuel (diesel), or coal or electricity.
There are mainly three kinds of heating methods, one is heating directly through coal-fired boilers, that is, direct supply mode, no secondary exchange (Note: This type of heating is strictly prohibited using a steel radiator);
Advantages and disadvantages of radiator welding
When you buy a radiator, you can also choose from the radiator welding method, there is a bridge-type welding, the other is responsible for the overall welding. In practice, as the time increases, scale may accumulate in the radiator. Since the bridge welding is a combination of two pipes, the outlet of the welding place is smaller and more likely to cause blockage. The overall welding is performed by Direct welding of pipes does not easily cause plugging. And from the aesthetic point of view the overall welding style will be more smooth and more beautiful.
Argon arc welding
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