Many alloys that fail the test are piled there, and the more they pile up, the more rubbish they get. After a long period of exposure to the sun and rain, all those scrap iron rusted, and even the ground had brown rust. While cleaning up the garbage, everyone is worried that high-hardness steel has not yet been made. Suddenly, Bourelly found a few pieces of metal shining in the garbage, which was particularly dazzling among a pile of rusty iron. Look carefully, it is the original pieces of alloy that were thrown away. Everyone scrambled to take it to see: it looks like ordinary steel, why is it different? He wants to know why all other metals are rusted, but only these metal pieces are not rusted. There must be something special about their ingredients. Because all the discarded things were misplaced and there was no code registration, they had to carefully analyze this "strange steel". The results show that carbon accounts for 0.24%, chromium accounts for 65,438+02.8%, and the rest is iron. This is the famous stainless steel. Planting flowers is a deliberate effort, but planting willows is an unintentional effort. This is how Bourelly invented stainless steel.
Stainless steel is an alloy steel, which can resist acid, alkali, salt and other corrosion. No stainless steel can resist the corrosion of various media. The composition of stainless steel determines what kind of medium can resist corrosion. There are two kinds of stainless steel commonly used: iron-chromium-nickel stainless steel and chromium stainless steel, but they can be divided into many kinds because of their different contents. The method of identifying whether stainless steel is attracted by magnets is unreliable. 19 15, Bourelly obtained an American patent for this invention and produced the first stainless steel tool in the world. 19 16 years, he obtained the British patent for this invention; He also co-founded a factory with Moseler to produce stainless steel tableware, which was very popular and caused a sensation in Europe and later spread all over the world. Since then, Bourelly has been honored as the "father of stainless steel". So far, all kinds of stainless steel products have been widely used in various fields.
In fact, Bourelly was not the only inventor of stainless steel. At the beginning of the 20th century, French Guy and Boruz had discovered that chromium-doped metal in iron could resist corrosion, but he didn't know how to deal with this alloy and didn't use it. 19 12 years, Hermes of the United States also produced stainless steel products. At the same time, German Shutlaus and Maurer invented iron-chromium-nickel stainless steel, which is the most widely used stainless steel up to now, which is consistent with the metal types in Bourelly stainless steel. However, it is regrettable that we missed the honor and huge economic benefits because we did not do more in-depth research and elaboration and did not apply for a patent.