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Published 16 May 2024
What impact will the surface drawing and oxidation of 304L stainless steel plate have?
Brushed oxidation is a kind of surface processing of stainless steel plates. The surface effect of the plates is relatively good. The unique beauty of stainless steel is displayed in indoor and outdoor spaces in the form of elevators, screens, sculptures, ceilings, etc. However, the effects of wire drawing oxidation on certain stainless steel plates are both positive and negative. For example, 304L stainless steel plate has excellent corrosion resistance and oxidation resistance. However, after drawing and oxidation, the 304L stainless steel plate was degreased and extruded, and some reactions occurred on the surface. At this time, the oxide film of the 304L stainless steel plate may not be as stable as before, and its corrosion resistance will indeed be reduced. On the contrary, wire drawing and oxidation will bring bright and matte surfaces to 304L stainless steel plates. The surfaces of these two are actually more upscale, and many people prefer them. Therefore, we must regularly clean and maintain the brushed and oxidized stainless steel plates to avoid direct contact with corrosive substances. For more information about 304L stainless steel, please consult our staff at Huaxin Steel Stainless Steel.
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Published 11 May 2024
A simple method to quickly identify 304 and 201 used in stainless steel water tank sheet metal factories
304 stainless steel is often used in the inner layer (that is, in direct contact with water) because of its excellent corrosion resistance. 201 stainless steel cannot be used in the inner layer because of its poor corrosion resistance and can only be used in the outer layer of the insulated water tank. However, 201 stainless steel is cheaper than 304 stainless steel. It is often used by some unscrupulous merchants as 304 stainless steel. Stainless steel water tanks made of 201 stainless steel have a very short service life. They can be corroded by water in about 1-2 years, leaving safety hazards during use. Hidden danger. Let’s teach you how to identify these two materials in a simple way: 1. The surface of 304 stainless steel and 201 stainless steel used in stainless steel water tanks is usually matte. So we can identify it by looking with the naked eye and touching it with our hands. To the naked eye, 304 stainless steel has a very good luster and is very smooth to the touch; 201 stainless steel is dark in color, has no luster, and feels rough and not smooth to the touch. In addition, wet your hands...
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Published 26 April 2024
Cutting of high-performance austenitic stainless steels – waterjet, plasma and laser cutting
Water jet cutting Water jet cutting uses a nozzle to produce a high-pressure water jet carrying fine abrasive particles for cutting. This method is very effective for cutting both metallic and non-metallic materials. The process uses high-capacity pumps and has very high water and electricity requirements. This method can cut thick stainless steel (>100mm) without generating a heat-affected zone (HAZ) or changing the metallurgical structure of the workpiece. Although the quality of water jet incision is good, when the cutting section is thick, the bevel angle of the section will be larger. It is not economical to cut thin steel plates using this method, but by stacking multiple thin steel plates, multiple workpieces can be cut at one time. Plasma cutting Plasma cutting is the most commonly used method for cutting all grades of austenitic stainless steel medium-thick plates with a thickness above 25mm. The design of the plasma gun significantly improves accuracy and cut quality, making it an ideal process for cutting straight lines or special shapes. In some cases, plasma cut cuts are of such good quality that they can be used directly without further processing or as welded joints. Since plasma cutting does involve high temperatures and...
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Published 19 April 2024
Stainless steel and mild steel price higher
In the raw material market, the average ex-factory price of ferronickel increased by 5 yuan/nickel, the average ex-factory price of ferrochrome remained unchanged, and the price of electrolytic nickel in Jinchuan fell by 500 yuan/ton. Fed Chairman Jerome Powell said there was a lack of further progress on inflation. While there is progress in inflation, it is not happening fast enough and it may take longer to have confidence in inflation. Statements on inflation further undermined market bets on the Fed cutting interest rates. Strong inflation in the first quarter has created new uncertainty about whether the Federal Reserve can lower interest rates this year without signs of an economic slowdown. The sharp shift in the Fed’s outlook came after a third straight month of stronger-than-expected inflation data, which appeared to dash hopes that the central bank might preemptively cut interest rates. If inflation continues to rise above 2%, the Fed may keep interest rates at current highs for longer. According to the National Bureau of Statistics, my country’s economy performed smoothly in the first quarter and achieved a good start. The overall production situation is good, and the industry has achieved rapid growth. Consumer investment continues to recover, and...
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