Stainless hlau tau raug nrhiav pom hauv tebchaws Askiv hauv xyoo 1912. Harry Brearley tau tsim cov hlau tsis muaj steel, tab sis qhov no tsis yog nws lub hom phiaj qub, nws yog ib qho khoom sib tsoo kiag li.
Harry Brearley was working for a gun manufacturer and trying to find more durable materials. The inner diameter of the gun wears too quickly due to heat and exhaust gases. He tried adding 10-20 percent chromium to the steel. He didn't properly handle the failed batches, just left them outside. A few months later, he found these steel was not rusted, so he discovered stainless steel.
Lwm tus tau hais tias thaum sim tshuaj xyuas cov hlau / chromium sib tov nyob rau hauv lub tshuab ntsuas, nws thawj zaug yuav tsum tau etch nws nrog nitric acid, thiab pom tias cov khoom no tiv taus corrosion heev.
Es tsis txhob hnav-cov hlau tsis muaj zog, nws pom corrosion-cov hlau tsis muaj zog.
Anyway, realizing the potentiality of the material he found, he went to a tableware maker to make knives with the new material, and the manager Ernest Stewart changed the material name to "stainless steel", it was the first time this material was called "stainless steel".
Brearley tau thov rau US patent nyob rau hauv 1915 thiab luam tawm ib tsab xov xwm los qhia stainless hlau rau lub ntiaj teb no nyob rau hauv New York Times tom qab xyoo ntawd.
Niaj hnub no, stainless hlau tuaj yeem pom nyob txhua qhov chaw hauv ntiaj teb niaj hnub no. Nws yog siv rau hauv txhua yam los ntawm kev tsim khoom, tsheb, aerospace thiab kev tsim kho kev lag luam mus rau cov cuab yeej phais, xauv thiab txhua yam uas yuav raug huab cua.
