Dab tsi yog kev nyab xeeb zaub mov qib stainless hlau?
Dab tsi yog 304 stainless hlau? Puas yog cov ntsiab lus manganese hauv stainless hlau tiag tiag uas txaus ntshai?
1. 304 stainless hlau yog cov khoom siv hauv cov hlau tsis muaj steel nrog qhov ntom ntawm 7.93 g / cm3. Nws tseem hu ua 18/8 stainless hlau hauv kev lag luam. Nws tiv taus qhov kub thiab txias ntawm 800 degrees thiab muaj cov yam ntxwv ntawm kev ua haujlwm zoo thiab siab tawv. Nws yog dav siv nyob rau hauv kev lag luam, rooj tog kho kom zoo nkauj kev lag luam, khoom noj khoom haus thiab kev kho mob kev lag luam.
304 yog ntau yam stainless hlau uas yog dav siv los ua cov khoom siv thiab cov khoom uas xav tau cov khoom zoo (corrosion resistance and formability). Yuav kom tswj tau qhov kev tiv thaiv corrosion ntawm stainless hlau, cov hlau yuav tsum muaj ntau tshaj 18% chromium thiab ntau tshaj 8% npib tsib xee.304 stainless hlauyog ib hom ntawm stainless hlau ua raws li American ASTM cov qauv.
2. Raws li tus qauv yuav tsum tau ua ntawm GB 3280 "Stainless Steel Cold Rolled Steel Phaj thiab Steel Strip", cov tshuaj qib ntawm 304 stainless hlau yog 06Cr19Ni10. Cov qib qub (0Cr18Ni9) muaj 19% chromium, 8-10% npib tsib xee, thiab tsis pub ntau tshaj 2% manganese. Yog li ntawd, Thaum lub sij hawm xeem ntawm GB 3280 tus qauv, engineers yuav txiav txim seb cov khoom siv stainless hlau puas raws li qhov yuav tsum tau muaj ntawm qib 304 hauv tus qauv, thiab cov khoom siv hlau stainless yog 304 stainless hlau.
3. yog304 stainless hlau zaub mov qib stainless hlau? tau kawg tsis. Khoom noj khoom haus-qib stainless hlau hais txog stainless hlau cov ntaub ntawv uas ua raws li "National Standards of the People's Republic of China/Hygienic Standards for Stainless Steel Tableware and Containers" GB9+684-2011, thiab nws cov ntsiab lus txhuas yog qis dua li ntawm zoo tib yam stainless hlau. Khoom noj khoom haus-qib stainless hlau yog hais txog ib feem ntawm cov khoom noj machinery uas los rau hauv kev sib cuag nrog cov zaub mov thiab yuav tsum tau raws li tej yam kev ruaj ntseg cov zaub mov.
1. Yuav ua li cas yog lub teb chaws tus qauv rau high-manganese steel siv nyob rau hauv stainless hlau kettles thiab lwm yam khoom siv hauv tsev zoo li tam sim no nyob rau hauv lub lag luam?
Teb: nyob rau hauv lub teb chaws cov qauv uas twb muaj lawm, muaj cov kev cai uas stainless hlau siv nyob rau hauv cov zaub mov ntim muaj nws ntau yam kev siv: austenitic stainless hlau, ferritic stainless hlau, thiab lwm yam yuav tsum tau xaiv nyob rau hauv txoj kab nrog rau lub teb chaws cov qauv (ntawm no nws yuav tsum tau ua. ntawm cov khoom siv stainless hlau raws li GB / T 3280-2007 tus qauv). High manganese steel tsis nyob rau hauv qhov ntau uas yuav tsum tau siv rau cov thawv ntim khoom. Yog li ntawd, los ntawm qhov kev xav ntawm kev nyab xeeb zaub mov, nruj me ntsis hais lus, siab manganese hlau tsis tuaj yeem siv los ua cov khoom siv rau cov thawv ntim khoom. High manganese steel feem ntau yog siv hauv kev lag luam hnyav.
2. Cov thawv ntim khoom noj puas ua los ntawm cov hlau manganese siab puas tsuaj rau tib neeg lub cev? Lub hauv paus ntsiab lus puas yog dab tsi? Dr. Qu Junxiong ntawm Suav University of Science thiab Technology tau hais tias cov thawv ntim khoom cua sov yuav yaj cov manganese sab hauv. Qhov no puas yog? Puas yuav yaj manganese absorbed los ntawm tib neeg lub cev? Nws puas yuav ua rau lub paj hlwb puas thiab ua rau tsis nco qab?
Teb: Manganese yog ib qho tseem ceeb ntawm cov kab mob rau tib neeg lub cev. Yog li ntawd, yav dhau los, nws feem ntau ntseeg tias manganese tsis muaj teeb meem rau tib neeg lub cev. Nyob rau hauv kuv lub teb chaws, manganese tsuas yog suav hais tias yog ib tug sensory trait indicator. Yog tias cov khoom siv hlau tsis muaj steel nrog cov qauv tsim nyog hauv lub tebchaws hauv kuv lub tebchaws tau siv, qhov kev tsiv teb tsaws ntawm manganese yuav tsis ua rau muaj kev puas tsuaj rau kev noj qab haus huv. Yog li ntawd, kuv lub teb chaws tsis tau teev cov kev tsiv teb tsaws ntawm manganese nyob rau hauv GB 9684-2011 "National Food Safety Standard Stainless Steel Products" standard. Cov ntsuas ntau tau muab, tab sis tsuas yog cov ntsuas ntsuas tau muab rau cov khoom txav tau ntawm cov hlau lead, chromium, nickel, cadmium, thiab arsenic.
Nyob rau tib lub sijhawm, lub teb chaws tau them nyiaj ntau dua rau cov ntsuas kev nyab xeeb ntawm cov khoom siv phom sij hauv cov khoom siv me me. "Kev txwv tsis pub siv cov khoom siv phom sij hauv cov khoom siv hluav taws xob thiab hluav taws xob" (ROHS 2.0), uas tau ua tiav thaum Lub Xya Hli 1, qhia meej txog kev txo qis thiab kev txwv cov hlau lead. Kev siv cov khoom tsis zoo xws li cadmium thiab mercury hauv cov khoom siv hluav taws xob thiab hluav taws xob ua kom muaj kev nyab xeeb ntawm cov khoom siv me me hauv tsev kom ntau dua.
3. Puas yog lwm yam khoom siv hlau tsis zoo? Vim li cas? Thov muab qee cov lus qhia siv rau cov neeg siv khoom.
Teb: Stainless hlau yog cov khoom siv zoo rau cov khoom siv hauv tsev thiab cov rooj zaum. Nws muaj qhov zoo ntawm kev ua kom muaj zog, ruaj khov, yooj yim los ntxuav, thiab tiv taus qhov kub thiab txias. Ob hom hlau, 304 thiab 430, tau siv dav hauv Suav teb. Feem ntau, 430 stainless hlau yog tsuas yog siv rau cov khoom noj khoom haus, abrasives, thiab tableware.304 stainless hlaufeem ntau yog siv los tsim cov khoom siv hauv chav ua noj me me. Qhov no yog raws li lub teb chaws tus qauv. Kev siv hom hlau no ua raws li Cov Khoom Siv Hluav Taws Xob hauv tsev thiab cov rooj zaum muaj kev nyab xeeb.
