There are three main factors that affect stainless steel corrosion: 1. The content of alloying elements. Generally speaking, the content of chromium is 10.5%, and the steel is not easy to rust. The higher the content of chromium and nickel, the better the corrosion resistance. For example, the content of nickel in 304 material is 8-10%, and the content of chromium is 18-20%. Such stainless steel will not rust under normal circumstances. 2. The smelting process of the manufacturer will also affect the corrosion resistance of stainless steel. A large stainless steel plant with good smelting technology, advanced equipment and advanced technology can ensure the control of alloying elements, the removal of impurities, and the control of the cooling temperature of the billet, so the product quality is stable and reliable, the internal quality is good, and it is not easy to rust. On the contrary, some small steel mills have backward equipment and backward technology. During the smelting process, impurities cannot be removed, and the products produced will inevitably rust. 3. The external environment, the climate is dry and ventilated, and it is not easy to rust. The air humidity is high, continuous rainy weather, or environmental areas with...
What should be paid attention to when grinding 304 stainless steel plate? How much do you know about this issue? The editor of the 304 stainless steel plate below will tell you about this problem, and I hope it will help you. 1) When grinding 304 stainless steel plate, reducing the adhesion and blockage of the grinding wheel is an important factor to improve the grinding efficiency. The grinding wheel should be trimmed frequently during processing to keep the cutting edge sharp. 2) The main goal of grinding 304 stainless steel plate is to choose a grinding wheel with good self-sharpening. Generally, the grinding wheel with low hardness is good, but the hardness should not be too low, otherwise the abrasive particles will fall off without being blunt. Class J is recommended. 3) In order to reduce the adhesion and blockage of the grinding wheel during grinding, a coarse-grained grinding wheel should be selected. Use No. 36 and No. 46 grain size for rough grinding, and No. 60 grain size for fine grinding. 4) When grinding 304 stainless steel plate, the use of GC grinding wheel can improve the grinding efficiency. 5) The selection of grinding fluid needs to take...
What are the requirements for 304 stainless steel plate inspection? The editor of the 304 stainless steel plate below will tell you about this problem, and I hope it will help you. First of all, you should pay attention to check the corrosion resistance requirements of 304 stainless steel plate. This aspect mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, etc.) and internal structure. The main role is to Chromium element. The chromium in Wuxi 304 stainless steel plate has high chemical stability. After the test force is removed after a specified holding time, a passive film can be formed on the steel surface. Regarding the calculation formula of this passive film for 304 stainless steel plate, it should be noted that it will isolate the metal from the outside world and protect the steel plate from being oxidized. After the passivation film is destroyed, the corrosion resistance decreases. The chromium content (%) in the 304 stainless steel plate is 17.00-19.00, which is cut into billets with a length of one meter. Nickel content.%) 8.00-10.00, stainless steel is a universal stainless steel material, its rust resistance is stronger than that of 200 series stainless steel materials, and...
In the stainless steel plate process, if the temperature of the steel is not uniform, the material flows more in the area with higher temperature, and less in the part with lower temperature, and the high temperature difference causes cracking. The wedge is a measure of the thickness at an edge compared to the average thickness of the edge of the strip or plate. It is desirable to have some bulge in the steel piece so that rolling can be performed with high stability. Roll springs are a defect in which the thickness of the rolled sheet is greater than required, the rolls have been deflected by the high rolling force, and elastic deformation of the mill occurs. Roll deformation can be reduced if a stiffer roll is used, ie a roll material of high stiffness or spring constant. Maintaining a uniform gap is difficult, the rollers deflect under the load required to deform the steel, the deflection results in the steel being thinner at the edges and thicker in the middle, which can be overcome by using crowned rollers, but crowned rollers compensate for a set of conditions, temperature and Deformation, other methods of compensating for roll deformation include...
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