A good gasket should have strong impact resistance.
It is not difficult to find that the inner container, as a core component related to the service life of electric water heaters, has a great gap between brands. Experts remind consumers that when purchasing electric water heaters, they must pay attention to the "impact resistance" index of the inner container. The water quality in China is very complicated and the water pressure fluctuates greatly. The impact resistance of the liner is directly related to the product quality and service life, so you must choose products with good impact resistance when purchasing. For the impact resistance of the liner, China enterprises have been able to achieve 6.5438+0.6 million times, which is higher than the standards of the United States and Europe (the American standard is 6.5438+0.6 million times).
Don't be confused by all kinds of names.
At present, there are two kinds of liners for electric water heaters, one is stainless steel liner and the other is enamel liner. The so-called Jingui liner, titanium liner, timely porcelain glaze, sapphire and so on. Just another name.
The advantages of stainless steel liner are high temperature resistance, corrosion resistance, stable performance and not easy to rust, but it is difficult to weld and easy to leave welds. After a long time, the weld is easy to rust, leading to water leakage. In order to reduce the cost, some enterprises use very thin stainless steel, which reduces the pressure of the inner container and affects the service life.
At present, most enterprises in the market use enamel liners. There is a layer of enamel on the surface of the enamel liner, which does not rust. However, the low-grade carbon steel plate used in general enamel liners has only two layers of liners, which has many problems such as fish scale explosion, acid corrosion, rapid dissolution and so on, and its service life is short. Therefore, we should also pay attention when choosing enamel liner. The quality of enamel liner mainly depends on the processing technology. As for the so-called enamel powder formula, it's just a mystery. As we all know, as long as you apply for a patent, the formula is open. King Kong three-layer liner is a better one on the market at present. It is made of superfine powder for enamel and sintered at 890 degrees. Finally, a compact three-layer liner is formed, including enamel layer, adhesion layer and decarburized steel plate layer, which greatly improves the dissolution resistance, explosion resistance and acid resistance, thus prolonging the service life of the product.
Question 2: What is the material of the water heater liner? At present, the best material for water heater liner is "Jingui", because this liner has super antifouling ability. But only Smith has it. This is a patented product.
Question 3: What kind of water heater liner is better? The key to the quality of water heater lies in the inner container of water heater, so we should choose a reliable inner container first. At present, the water heater liner can be roughly divided into the following three grades according to its value: stainless steel liner with the highest grade and the longest service life, and stainless steel liner. Stainless steel tank must be made of high-quality imported stainless steel materials and processed by advanced TIG welding, single-sided welding and double-sided forming welding technology, which can prevent oxidation at the weld and ensure that it will never rust, and its service life can reach 15 years or more. At present, water heaters in advanced countries such as Japan basically adopt stainless steel liners, and domestic brands such as Haier also adopt such liners. Middle and high-grade enamel liners are widely used in some European countries such as Italy and France, and about 50% of them are enamel liners. It is made by coating a layer of inorganic ceramic glaze on ordinary steel plate, which does not rust, and the cost is 1/4~ 1/6 of that of stainless steel liner. However, if the workmanship is poor, the thickness of glaze paste attached to different parts of the liner will vary greatly, and the thermal stress will be great after firing, which is prone to porcelain dropping, especially during transportation. The low-grade galvanized lining is coated with thermosetting resin. Because the liner is in a 70-degree heating environment, the cured resin is easy to hydrolyze and reflect light, and the antirust ability of the zinc protective layer is poor, so the service life is short.
Question 4: What is the most durable material for the inner container of electric water heater? As far as I know, electric water heater liners are mainly divided into stainless steel liners and enamel liners. The stainless steel liner has basically been eliminated and fished out. Now most of them are enamel liners, and there is a new liner, namely ariston's Artes series. ariston and its upgraded electric water heaters are all titanium liners.
Question 5: What is the liner of Midea electric water heater? Midea water heater liner is a blue diamond liner. As the name implies, blue is the color of the tank, and "diamond" is the material of the tank. This tank is 3mm thicker than ordinary stainless steel tank, and has the functions of rust prevention, corrosion prevention and leakage prevention, and has a long service life. In addition, according to the characteristic that stainless steel is easy to react with active ions in water, Midea water heater is specially equipped with a special process magnesium rod, which preferentially reacts with active ions during work and plays a more effective role in protecting the inner tank.
Question: what is the material of Merksz water heater liner? Ding Xin water heater liner is a patented four-layer steel liner.
Question 7: What is the material of Haier water heater liner? It depends on what model you buy. At present, most of them are diamond three-layer liner, carbonized steel plate and enamel layer. The inner liner of our gas water heater is made of high-purity copper.
Question 8: What is the material of Midea water heater liner? Will it be broken if it is broken? The inner container of the water heater is made of metal, such as iron plate and stainless steel, which will not break when stabbed.
Question 9: What kind of tank do you choose for electric water heater? Selection of inner container: Reliable inner container of electric water heater is the key to the quality of electric water heater. At present, the inner container of electric water heater can be roughly divided into three grades: the stainless steel inner container with the highest grade and the longest service life. Stainless steel liner-generally, high-quality imported stainless steel materials are selected, and advanced tungsten argon arc welding is adopted to prevent weld oxidation, and the service life exceeds 15 years. However, the price of this kind of electric water heater is high, which is suitable for families with relatively affluent economy. The mid-range is an enamel liner. It is widely used in some European countries. It is made by coating a layer of inorganic ceramic glaze on ordinary steel plate, which does not rust, and the cost is only 1/6 ~ 1/4 of that of stainless steel liner. If the manufacturing process is poor, it will lead to uneven thickness of glaze paste attached to different parts of gallbladder, and it is easy to lose porcelain. Once the porcelain is dropped, the inner container of the electric water heater will corrode and perforate, which will affect the service life of the electric water heater. This kind of electric water heater is moderate in price and suitable for ordinary families. The low-grade galvanized lining is coated with thermosetting resin. Because the inner container is in a heating environment of 70 ~ 80℃, the cured resin is easy to hydrolyze, and the zinc protective layer has poor antirust ability and short service life. Because of its low manufacturing cost, its price is also low.
The inner container is made of stainless steel and steel plate. Consumers often have a misunderstanding that stainless steel liners will not rust and be corroded. In fact, stainless steel liner has one of the biggest hidden dangers-weld. After the weld melts, the material of stainless steel has changed fundamentally, and it is no longer the original stainless steel. Haven't you noticed that some stainless steel products will rust after a long weld? Virtual weldments cannot be inspected before leaving the factory. After being used or left for a period of time, the weld will gradually leak, and chromium ions in stainless steel are easily corroded by fluorine ions in tap water. In addition, stainless steel is more expensive. In order to reduce the cost, many manufacturers use relatively thin stainless steel as the inner container, usually only 0.6- 1.0mm, and the pressure resistance decreases, which makes the water heater more prone to water leakage and directly affects the life of the water heater. Therefore, in Europe, some developed countries do not use stainless steel as the liner material, and the fact that the water heater with stainless steel as the liner on the market cannot be used for multiple water supply also shows that the pressure resistance of stainless steel is unreliable. Another kind of steel lining can be divided into resin lining and enamel lining. Crystal silicon liner, gold silicon liner, glass liner and high glaze liner actually refer to enamel, that is, steel plate layer plus enamel layer. The reason why there are all kinds of sayings is just the propaganda of the merchants and they want to be different. Enamel, a material containing metallic silicon, is called enamel in Europe and glass in the United States. In addition, if glass is used as the inner container, what is the pressure? You know, glass is fragile and can't stand the pressure. Therefore, only by knowing the truth can we make the right choice.