S30400 phaj

Chromium cov ntaub ntawv ib txheej dhau los ntawm chromium (III) Oxide (CR2O3) thaum 304 tus kab hlau raug rau cov pa oxygen. Txheej txheej dhau heev kom pom thiab cov hlau tseem ci. Lub 304 cov phaj steel yog impmeable rau dej thiab huab cua, tiv thaiv cov hlau hauv qab.

Cov hlau duless stainless muaj ib tug sib xyaw microstrite thiab ferrite, thiab lub hom phiaj feem ntau yog tsim muaj alloys muaj ntau yam no yuav yog 40 \ / 60. Duplex stainless hlau yog kwv yees li ob zaug uas muaj zog raws li cov hlau tsis muaj zog, tshwj xeeb yog pitting, kev ntxhov siab corrosion thiab kev ntxhov siab corrosion tawg.

Qeb 304 \ / 304L stainless hlau muaj tsawg kawg 18% chromium thiab 8% npib tsib xee. Qhov sib txawv tsuas yog ntawm lawv yog cov ntsiab lus carbon. Hom 304 muaj qhov siab tshaj plaws carbon ntawm 0.07% .type 304l muaj qhov siab tshaj Carbon ntawm 0.030%. Qhov ntau ntawm cov pa roj carbon hauv cov hlau cuam tshuam rau corrosion tsis kam. 304 \ / 304L muaj nyob rau hauv ntawv, ntawv coil, phaj, phaj coil, puag ncig cov khoom lag luam rau cov khoom lag luam ntxiv.

Zej zog hatening martitic stainless hlau tau sib piv corrosion tau sib piv rau cov qib me me, tab sis tuaj yeem ua ntej lub zog siab dua li lwm cov qhab nia Martensitic. Feem ntau 17-li 17-4pha siv txog 17% chromium thiab 4% npib tsib xee. Lub Lockheed-Martin Sib Koom Hlau Fighter yog thawj lub dav hlau siv nag lossis daus-ua rau cov tawv ntoo tsis zoo-stainless hlau ntoo ua haujlwm 465 hauv nws cov fuselage.

304 muaj cov cuab yeej zoo heev thiab tiv taus ntau yam ntawm cov neeg sawv cev hauv cov neeg sawv cev. 304 \ / 304L stainless hlau coils thiab cov phiaj yog ib feem ntawm cov neeg siv tsis tau hlau. Qeb 304 muaj cov ntsiab lus me dua li 302 thiab 304 \ / 304l muaj cov tshuaj ntsuab qis dua li qeb kho mob, textile, kev lag luam roj av thiab kev lag luam roj.

Noj cov qhua tuaj noj mov ua lub chaw nruab nrab, peb lub hom phiaj kawg yog stainless hlau coil, thawj Tisco, Stainless hlau phaj tsom iav, 316LVM stainless hlau bar. Peb siv zog kom tau raws li cov kev xav tau ntawm cov neeg siv khoom, ib txwm muab cov kev txaus siab ntawm cov neeg siv khoom thiab kev loj hlob ntawm cov neeg ua haujlwm, thiab txoj kev muaj kev sib raug zoo, kev txhim kho hauv qab.

Ib lub super duplex stainless hlau yog txhais ua lub hlwv yas nrog pitting corrosion (pre)>% (% mo + + 1 x 100 n. Usually super duplex steels have a chromium content of 25% or more, some common examples are S32760 (Zeron 100), S32750 (2507) and S32550 (Ferralium), but not all Ferralium grades are super duplex steels.

Qee lub automakers siv cov hlau stainless 304 steel hlau ua cov duab dai kom zoo nkauj hauv lawv cov tsheb.

Qhov no tiv thaiv kev corrosion txuas ntxiv ntawm nplaim. Nce cov ntsiab lus chromium tuaj yeem txhim kho corrosion tsis kam.

ASTM A240 Tus hlau Stainless, tseem hu ua cov inox steel, yog ib co hlau alloy nrog tsawg kawg 10,5 lossis 11% chromium los ntawm huab hwm coj.

Ib qho ntxiv, thaum lub saum npoo ntawm 304 steel phaj yog khawb, txheej txheej yuav hloov kho sai. Qhov tshwm sim no, hu ua passivation, yog pom nyob rau lwm cov hlau xws li txhuas thiab titanium. Corrosion tsis kam ntawm 304 steel phaj tuaj yeem cuam tshuam yog siv rau hauv ib puag ncig tsis yog oxidizing, ib qho piv txwv yog nyob hauv qab dej faus rau hauv ntoo.

Stainless hlau yog ib qho hlau alloy muaj tsawg kawg yog 10.5% chromium. Chromium ua cov txheej txheej nyias ntawm oxide nyob rau saum npoo ntawm cov hlau, hu ua "passivation txheej".

304 Stainless Hlau Phaj muaj qhov kev tsim nyog zoo heev thiab tuaj yeem yooj yim welded los ntawm txhua txoj kev. 304 \ / 304L ob daim ntawv pov thawj.

304 Stainless Phaj yuav dhau los ua kev sib nqus me ntsis thaum ua haujlwm thiab tsis yog cua sov kho tau.