Buy Tips: How to pick a stainless steel sink. First, the basic knowledge of stainless steel: stainless steel is the main component of nickel-containing chromium-containing low-carbon alloy steel, according to the ratio of nickel and chromium are divided into nickel series stainless steel and chromium series stainless steel. Stainless steel is classified into austenite, martensite, ferrite, and precipitation hardened stainless steel according to its structure. The high-quality stainless steel material on the market should have a chromium content of not less than 18% and a nickel content of not less than 10%. At present stainless steel sinks are all made of stainless steel hot-gauge thick plates (thickness less than 3mm for thin plates, thickness greater than 3mm for thick plates). Second, the production process 1, raw materials: The current domestic stainless steel tank manufacturers commonly used materials 0.8 ~ 1.0MM thick plate, commonly used models for Japan (JIS) SUS304, corresponding to China (GB) 0Cr18Ni9 (0Cr19Ni9). The plate is too thin to affect the service life and strength of the sink, too thick to easily damage the washed dishes. 2. Process: There are two kinds of processes for producing stainless steel sinks. The first is the welding method, in which the groove surface and the groove body are punched separately, and the two are connected by a welding method, and the surface of the weld surface is filled and polished. Generally, no visible welding marks can be seen on the front surface. This kind of production method is simple, small press equipment and simple mold can be used, generally use 0.5 ~ 0.7MM stainless steel plate, and the production process less loss, the cost is relatively low. The other method is a one-step molding method in which the sink is formed by pressing a whole piece of sheet material, which requires high requirements for processing equipment and molds. Because one-step molding requires high quality and ductility of the plate, 0.8-1 mm thick plate is generally used for stamping, and the whole is used. Mold, imported stamping equipment. Due to the large cutting loss of the edge of the plate in the production of a single molding method, and the investment in the mold and equipment, the cost is high. 3, surface treatment sink surface treatment to matte-based, there are drawing, scrub and so on, so even if the old, the scratches can not be seen. As an ordinary consumer, how to identify the stainless steel sink? Of course, price is the main reference factor, but it is not entirely, and now there are too many things of high quality. In the face of stainless steel sinks that cost more than a thousand yuan, consumers often have no choice but to follow the trend to buy or be misled by JS. Below combined with personal experience, introduce a few ways to choose the stainless steel sink. 1, than the thickness: The above has been said, a good stainless steel sinks are using a relatively thick plate, due to edge treatment of the sink, it is difficult to see the thickness at once, the easiest way: a little harder by the sink surface, if you press Going on, it shows that the material is very thin (Oh, online introduction to buy a car is such a check of the thickness of the steel plate), of course, if you can borrow vernier caliper and spiral micrometer, you should not be in such trouble. 2, the weight component: stainless steel is a ferroalloy, the proportion of steel is 7.87, which added nickel, chromium, heavy metals, the proportion of these metals than steel, so the weight is relatively heavy (of course, also refer to the thickness of the plate). If it is counterfeit, poor quality stainless steel, such as steel chrome plated light weight. 3, look at the process: there is a welding method and one forming method. We have seen some famous brand sinks. The same appearance size, but the price is very different. There are material factors here, but also the cost of the process. Of course, it can be said that the one-piece stainless steel sink is definitely better than the welding method. The first-class sinks are generally produced by a stamping method. Of course, there are also low-end products inside the brand name. Many of the welding methods are used. Got it. Please see the legend: 4, scratch the surface: Now JS rampant, traps dense, and some stainless steel is actually a layer of steel plated above a layer of chromium, and the price is not necessarily cheap. This is a bad move. It should be used while ensuring safety. If we look at a sink, but we have doubts about its texture, we can pick up some samples of the sink from the counter when the shop is full of people's mouths. Don't plan to sink the surface of the sink. Don't scramble to the bottom of the coating and the soundproof pad. Use it every 1-2 weeks. Look at the sink. How about the scratches? If not Traces of corrosion indicate that the material is OK. This move must be used with caution. If you have any unfavorable consequences, you must be at your own risk! Welding method and one-piece method picture description. 2 sinks first look at the face of a question, we guess which size is expensive, which weight? Look at their ass One-piece detail zoom Butt detail closeup of welding method Stainless steel sinks sold in the decoration market, including some well-known brands, are sources of doubt. According to a hardware friend, a sink like this welding method can be produced in a general household workshop. As long as there are 2 small punches, the edge of the weld is filled and polished, and it is difficult for ordinary consumers to find. At present, JS has never mentioned this process issue during the sales promotion. It is said to you throughout the day that the imported stainless steel plate is expensive and the surface treatment is good. Surface treatment process is very simple, does not cost much, is nothing more than to brush the original high-gloss stainless steel surface, made of matte or brushed, physical principles: mirror reflection into a diffuse reflection to cover the scratches (because after use, must have scratches ), And the process is quite low cost. If you look carefully, you will find it! ! ! ! The welding method and the one-piece forming method are also very different in the edge treatment. ! ! Steel plate is certainly one-piece thick Welding method: The stainless steel plate is thin, and it can be folded to make wrap angles to make a large enclosure. (The left picture below) One-piece method: The steel plate is thick and cannot be bent. Only one piece of the steel plate can be used as a fixing bar for mounting the hook to fix the sink on the table. (Right below). >>>Stainless Steel Sinks Category and Selection Guide 1: Chromium content should not be lower than 18%, nickel content is not less than 10%, is 18/10 stainless steel, has reached the level of medical and edible, the price is relatively high; usually we see the stainless steel products, many are 18 /8 stainless steel, (the amount of chromium should not be less than 18%, nickel content of not less than 8%), more than 18/8 can not reach, but this point, we can not be tested by conventional means of; 2. A certain good molding time. First of all, its steel plate is better, the technical term is "good resistance to deep drawing," which means that the deep drawing ability is good, and the toughness is good. This requires that there are enough nickel components in the composition. That is to say, at least 18/8 of the steel plate is punched out. Even so, its edge at the corner is also thinner, which is the part where the table and the basin meet, because the section angle of this part is relatively smallest. section; 3. Please don't ignore the bottom silencing layer, tap and hear, and you will understand the difference. Imagine eating an apple in the evening, letting the water wash, the water flowing to the bottom of the bucket, and the water fountain in the kitchen. Like drums, what does it feel like... 4. The components that fall into the water are also very important. Sink plate stainless steel decorative counter kitchen cabinet door
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