Stainless steel bar of a chemical identification coup, copper point test method - copper sulfate point test is quick to distinguish between ordinary carbon steel, and the easiest way of all types of stainless steel, copper sulfate solution used in concentrations of 5% -10% before, during the dot test, the test area should be thoroughly remove oil or other contaminants, and by grinding or polishing cloth Polishing a small area, and then try to polish droplets at the stainless steel doors, plain carbon steel or iron in a few seconds will form the inner surface of the metal seed layer of copper, and the point of the test surface of stainless steel or copper precipitation is not the display color of copper produced. 2, sulfuric acid test methods - sulfuric acid immersion 302 and 304 stainless steel can with 316 and 317 to distinguish. Trimming the sample subjected to fine grinding stainless steel trash can, and then in a volume concentration of 20% to 30%, temperature 60 ~ 66 ℃ sulfuric acid cleaning and passivation of half an hour, the volume concentration of 10% sulfuric acid solution, heating to 71 ℃, the 302 and 304 are immersed in the solution, and the corrosion of steel was quickly produce large amounts of air bubbles in the sample black within minutes; and 316 and 317 samples of the steel from corrosion or erosion is very slow (no Bubble), the test within 10 to 15 minutes does not change color. If the test sample simultaneously with a known composition to approximate comparison, the test can be more accurate. Acid-resistant stainless steel cutting and beveling usually directly through the cutting oxygen jet with iron, iron by means of heat in the ordinary oxygen-acetylene flame produced. Fused iron oxide and chromium oxide are mixed, and they are diluted to a significant amount of heat is increased, the formation of a mixture of liquid melt Li, is cut from the cut seam oxygen blowing. It can cut thick stainless steel sheet or cast appetite. Abroad, also use spray powder cutting method, with a fast fan cutting cutting nozzle, cutting nozzle at the outer edge of the flow of water spray, as shown in Figure 5 Wing. Iron particles generally greater than 150 mesh. V4 precision cut end up more processing verticality also ideal incision is not required for processing can achieve the requirements of the drawings. The flow of water jet cut heart pieces weeks, steel will not play at the end of Alice ridicule 5 jet cutting schematic ridicule cutting can improve the corrosion resistance of stainless steel cuts. Can be cut to 150 mm thick stainless steel pull wood, you can cut multiple layers 2--3 mm × 30 layers of ordinary carbon steel plate or 2 mm × 40 layers of stainless steel. If fitted profiling mechanism, but also cut into various shapes of patterns. It can be cut out, you can also manually operate it with plasma cutting shed ratio: equipment is simple, lightweight, does not require a large supply of stainless steel screens decorative flowers, easy to operate, tip with sprinklers to reduce dust pollution. But it's no cutting speed plasma arc cutting was restored, and it can not cut copper, aluminum and its alloys. Stainless steel shelf, stainless steel, Chongqing Yao Yi Stainless Steel Products Co. provided by Chongqing Yao Yi Stainless Steel Products Limited. Stainless Steel Products Co., Ltd. Chongqing Yi Yao (www.shudumy.com) strong, credible, in Chongqing, Chongqing stainless steel products and other industries and has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Arts Yiu stainless steel and you hand into the brilliant, for a better future!