Brearley tau tsim cov hlau tsis muaj steel hauv xyoo 1916 tau txais daim ntawv pov thawj British thiab pib tsim ntau lawm, kom deb li deb, cov hlau tsis muaj hlau tsis pom nyob hauv cov khib nyiab tau nrov thoob plaws ntiaj teb, Henry Brearley tseem hu ua "leej txiv ntawm stainless hlau".Thaum Tsov Rog Thoob Ntiaj Teb thib 1, cov phom British ntawm kev sib ntaus sib tua yeej ib txwm xa rov qab mus rau tom qab vim tias lub chamber tau hnav thiab siv tsis tau.Tub rog ntau lawm departments tau txiav txim rau txoj kev loj hlob ntawm high-lub zog hnav-tiv taus alloy steel Breer Li, tshwj xeeb nyob rau hauv kev daws teeb meem ntawm hnav ntawm lub bore.Brearley thiab nws tus pab tau sau ntau hom hlau uas tsim nyob rau hauv tsev thiab txawv teb chaws, ntau yam khoom sib txawv ntawm cov hlau alloy, nyob rau hauv ntau yam khoom ntawm kev ua tau zoo ntawm kev sim, thiab tom qab ntawd xaiv cov hlau tsim nyog rau hauv cov phom.Muaj ib hnub, lawv tau sim ib yam ntawm cov hlau alloy hauv tsev uas muaj ntau cov chromium.Tom qab kev sim hnav-tiv taus, nws pom tias cov hlau no tsis hnav-tiv taus, qhia tias nws tsis tuaj yeem siv los ua phom.Yog li ntawd lawv tau sau cov txiaj ntsig ntawm qhov kev sim thiab muab pov rau hauv ib lub ces kaum.Muaj ib hnub, ob peb lub hlis tom qab ntawd, ib tug neeg pab tau khiav mus rau Brearley nrog ib daim hlau ci."Sir," nws hais tias, "Kuv pom cov alloy los ntawm Mr. Mullah thaum kuv tab tom tu lub tsev rau khoom. Koj puas xav sim nws kom pom tias nws siv tshwj xeeb dab tsi!""Zoo!"Brearley hais zoo siab, saib lub ci ntsa iab hlau.
Cov txiaj ntsig kev sim qhia tias nws tsis ntshai cov kua qaub, alkali, ntsev stainless hlau.Cov hlau tsis muaj hlau tau tsim los ntawm German mullah hauv xyoo 1912, tab sis cov mullah tsis paub tias nws yog dab tsi.
Brearley xav tias: "Yuav ua li cas cov hlau no, uas tsis hnav-resistant tab sis corrosion-resistant, siv rau tableware, tsis yog rau phom?"Nws hais tias qhuav qhuav, pib ua stainless hlau txiv hmab txiv ntoo riam, diav rawg, diav, txiv hmab txiv ntoo phaj thiab folding riam.
Tam sim no daim ntawv thov ntawm stainless hlau yog ntau thiab ntau dav, qhov kev thov kuj nce, ces tom ntej no yog tham txog kev faib thiab daim ntawv thov ntawm stainless hlau.
Tag nrho cov hlau reacts nrog oxygen nyob rau hauv cov huab cua los ua ib tug oxide zaj duab xis rau saum npoo.Hmoov tsis zoo, cov hlau oxide uas tsim los ntawm cov pa roj carbon zoo tib yam txuas ntxiv mus oxidize, tso cai rau kev txhim kho corrosion thiab nws thiaj li tsim qhov.Qhov saum npoo ntawm carbon hlau tuaj yeem ruaj ntseg los ntawm electroplating nrog cov xim lossis oxidization-resistant hlau xws li zinc, nickel thiab chromium, tab sis, raws li paub, qhov kev tiv thaiv no tsuas yog ib zaj duab xis nyias.Yog tias cov txheej tiv thaiv tawg, cov hlau hauv qab pib xeb.
Resistant rau huab cua, chav, dej thiab lwm yam tsis muaj zog corrosive nruab nrab thiab acid, alkali, ntsev thiab lwm yam tshuaj corrosive nruab nrab corrosion ntawm hlau.Kuj tseem hu ua stainless acid - resistant steel.Hauv kev siv tswv yim, cov hlau tsis muaj zog corrosion feem ntau hu ua stainless hlau, thiab cov hlau uas muaj tshuaj tiv thaiv corrosion yog hu ua acid resistant steel.Vim qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg, tus qub tsis tas yuav tiv taus cov tshuaj nruab nrab corrosion, thaum lub tom kawg yog feem ntau xeb resistant.Qhov kev tiv thaiv corrosion ntawm stainless hlau 2 yog nyob ntawm cov alloying ntsiab muaj nyob rau hauv cov hlau.Chromium yog lub hauv paus ntsiab lus los ua kom tsis muaj steel hlau corrosion kuj.Thaum cov ntsiab lus chromium hauv cov hlau nce mus txog 12%, chromium thiab oxygen nyob rau hauv qhov nruab nrab corrosive hnov mob los ua ib zaj duab xis oxide nyias (self-passivation zaj duab xis) ntawm cov hlau nto, uas tuaj yeem tiv thaiv corrosion ntxiv ntawm cov hlau matrix.Ntxiv nrog rau chromium, feem ntau siv cov hlau alloy thiab npib tsib xee, molybdenum, titanium, niobium, tooj liab, nitrogen, thiab lwm yam, kom ua tau raws li qhov yuav tsum tau ua ntawm ntau yam kev siv stainless hlau qauv thiab kev ua tau zoo.
Ob, kev faib tawm ntawm stainless hlau stainless hlau feem ntau muab faib ua:
1. Ferritic stainless hlau.Chromium 12% ~ 30%.Nws cov corrosion kuj, toughness thiab weldability nce nrog nce ntawm chromium cov ntsiab lus, thiab nws tsis kam mus rau chloride kev nyuaj siab corrosion yog zoo dua li lwm yam stainless hlau.
2. Austenitic stainless hlau.Nws muaj ntau tshaj 18% chromium, 8% npib tsib xee thiab ib qho me me ntawm molybdenum, titanium, nitrogen thiab lwm yam khoom.Kev ua haujlwm zoo, tuaj yeem tiv thaiv corrosion ntawm ntau yam xov xwm.
3. Austenitic ferrite duplex stainless hlau.Nws muaj qhov zoo ntawm austenitic thiab ferritic stainless hlau, thiab muaj superplasticity.
4. Martensitic stainless hlau.Siab zog, tab sis tsis zoo plasticity thiab weldability.
Peb, cov yam ntxwv thiab kev siv cov hlau tsis muaj steel.
Plaub, stainless hlau nto txheej txheem.
Tsib, txhua steel zeb ntim cov yam ntxwv thiab cov khoom tseem ceeb.
Lwm lub tsev steel mills: Shandong Taigang, Jiangyin Zhaoshun, Xinghua Dayan, Xi 'an Huaxin, Southwest, East tshwj xeeb steel, cov chaw me me no tsuas yog siv cov khoom pov tseg rau yob phaj, rov qab cov txheej txheem, phaj nto sib txawv, tsis muaj kev ua haujlwm zoo, lub ntsiab lus. cov ntsiab lus nyob rau hauv lub Hoobkas loj yuav luag tib yam, tus nqi pheej yig dua li lub Hoobkas loj nrog tib tus qauv.
Imported steel mills: Shanghai Krupp, South Africa, North America, Nyiv, Belgium, Finland, imported board ntau lawm technology advanced, huv si thiab zoo nkauj board nto, luas trim, tus nqi yog siab tshaj lub domestic sib npaug qauv.
Rau, stainless hlau specifications qauv thiab loj: stainless hlau phaj muaj ib tug ntim thiab thawj phaj ntim:
1. Yob yog muab faib ua txias dov yob thiab kub dov yob, txiav ntug yob thiab raw ntug yob.
2. Lub thickness ntawm txias dov coil yog feem ntau 0.3-3mm, muaj 4-6mm thickness ntawm txias dov ntawv, dav ntawm 1m, 1219m, 1.5m, qhia los ntawm 2B.
3. Lub thickness ntawm kub dov ntim yog feem ntau 3-14 hli, muaj 16 hli ntim, dav yog 1250, 1500, 1800, 2000, nrog NO.1.
4. Cov yob nrog qhov dav ntawm 1.5m, 1.8m thiab 2.0m yog txiav ntug yob.
5. Qhov dav ntawm burr yob feem ntau yog 1520, 1530, 1550, 2200 thiab lwm yam dav dua li qhov dav dav.
6. Nyob rau hauv cov nqe lus ntawm tus nqi, tib tus qauv ntawm txiav ntug yob thiab raw ntug yob feem ntau txawv ntawm 300-500 yuan.
7. Lub ntim tuaj yeem kho tau raws li qhov ntev ntawm cov neeg siv khoom, tom qab lub tshuab qhib hu ua qhib phaj.Txias dov dav dav qhib 1m * 2m, 1219 * 2438 kuj tseem hu ua 4 * 8 ko taw, kub dov dav dav qhib 1.5m * 6m, 1.8m * 6m, 2m * 6m, raws li qhov ntau thiab tsawg hu ua cov phaj txheem lossis cov phaj loj.
Thawj phaj tseem hu ua ib daim ntawv dov:
1. Lub thickness ntawm thawj lub rooj tsavxwm feem ntau yog nyob nruab nrab ntawm 4mm-80mm, muaj 100mm thiab 120mm, qhov thickness no tuaj yeem kho dov.
2. Qhov dav ntawm 1.5m, 1.8m, 2m, ntev ntawm ntau tshaj 6m.
3. Nta: Thawj phaj muaj ntim loj, tus nqi siab, nyuaj pickling thiab tsis yooj yim rau kev thauj mus los.
Xya, thickness txawv:
1. Vim hais tias cov hlau zeb machinery nyob rau hauv cov txheej txheem dov, lub yob yog rhuab me ntsis deformation, uas ua rau lub thickness ntawm dov tawm ntawm lub phaj sib txawv, feem ntau tuab nyob rau hauv nruab nrab thiab nyias ntawm ob sab.Thaum ntsuas lub thickness ntawm lub rooj tsavxwm, lub xeev yuav tsum ntsuas qhov nruab nrab ntawm lub rooj tsavxwm lub taub hau.
2. Kev kam rau siab yog feem ntau muab faib ua qhov loj thiab kam rau me me raws li kev lag luam thiab cov neeg siv khoom xav tau.
Yim, qhov kev faib ua feem ntawm txhua cov khoom siv stainless hlau:
1. 304, 304L, 304J1, 321, 201, 202 tshwj xeeb gravity 7.93.
2. 316, 316L, 309S, 310S tshwj xeeb gravity 7.98.
3. Qhov feem ntawm 400 series yog 7.75.
Post lub sij hawm: May-23-2022