304 stainless hlau yeeb nkab muaj zoo heev corrosion kuj, siab hardness, siab kub kuj thiab lwm yam khoom, thiab yog dav siv nyob rau hauv cov khoom noj, kev lag luam, tshuaj kev lag luam, thiab lwm yam. Txawm li cas los, raws li ib tug ntau thiab general-purpose hlau cov ntaub ntawv, 304 tsis yog ib tug panacea. , tsis tuaj yeem siv rau hauv ib puag ncig, thiab nws tseem muaj cov xwm txheej hnyav rau kev siv.
Nyob rau hauv cov nqe lus ntawm corrosion kuj, kub tsis kam thiab hardness, qhov kev txwv ntawm cov kev pab cuam tej yam kev mob ntawm 304 stainless hlau kav yog hais tias cov xeb kuj ntawm 304 stainless hlau kav yog ib txwm muaj zog ntau tshaj li ntawm 201, tab sis nyob rau hauv muaj zog acid ib puag ncig, cov corrosion. tsis kam ntawm 304 kuj tseem yuav tsis muaj zog heev ntawm. Piv txwv li, nyob rau hauv cov nroog ntug hiav txwv dej, cov ntsev cov ntsiab lus nyob rau hauv cov huab cua yog siab heev thiab muaj chloride ions, yog li 304 stainless hlau tej zaum yuav tsis haum, yog li 316 stainless hlau yuav tsum tau.
304 muaj qhov kub thiab txias tsis kam, tab sis kev siv kub ntawm 304 cov kav dej tsis tuaj yeem siab dua 650 degrees tom qab kev sim, thiab ntau tus neeg hais tias 304 tuaj yeem tiv taus qhov kub thiab txias ntawm 800 degrees, uas yog qhov tsis raug. Yog tias qhov ntsuas kub siab tshaj, 304 stainless hlau kav yuav muaj teeb meem. Qhov no yog vim hais tias cov hlau hnyav nyob rau hauv cov khoom saum toj no kub yuav precipitate, thiab lub zog tensile, hardness, thiab yield zog ntawm cov yeeb nkab steel yuav txo.
Qhov kawg yog qhov hardness. Lub hardness ntawm 304 yog siab heev, thiab kev ruaj ntseg ntawm stainless hlau welded yeeb nkab ua los ntawm nws yog heev siab. Nws tsis tuaj yeem sib npaug lossis lwm yam zoo li los ntawm kev kho cua sov. Nws tsuas tuaj yeem ua tiav los ntawm kev kho mob khaub thuas, uas yog peb cov kev ua haujlwm nrog cov tshuab thiab cov cuab yeej siv, xws li hloov khoov, nias rau hauv oval leeg lossis cov raj tshwj xeeb ntawm lwm cov duab.
Txawm li cas los xij, 304 stainless hlau yeeb nkab dabtsi yog khoov thiab kev ua haujlwm tshwj xeeb yog tsis txwv kev ua haujlwm. Tom qab kev sim, lub zog tensile ntawm 304 yog hais txog 550MPa, thiab nws hardness yog hais txog 150 ~ 160HB, thiab peb tsis tuaj yeem tshaj qhov txwv no thaum ua. Nyob rau tib lub sijhawm, peb yuav tsum tau them sai sai rau qhov tseeb tias cov txheej txheem tiv thaiv ntawm cov yeeb nkab steel hlau yuav raug puas tsuaj tom qab kev ua haujlwm txias, thiab corrosion kuj yuav txo; Tom qab kev kho mob txias thiab ncab, qhov saum npoo ntawm cov yeeb nkab stretched yuav ua thinner, thiab nws cov tawv nqaij yuav txo qis. yuav poob qis heev. Yog li ntawd, tus nqi txwv yuav tsum tau txiav txim siab thaum ua tiav.
Cov saum toj no yog cov ntsiab lus ntawm qhov kam rau ua ntawm 304 stainless hlau yeeb nkab. Txawm hais tias 304 muaj qhov kub thiab txias tsis kam, corrosion kuj thiab siab hardness, nws raug nquahu kom siv 310s lossis 316 yog tias nws siv rau qhov kub siab tshaj 600 degree; Nws raug pom zoo kom siv 316 lossis 316l yog tias nws siv nyob rau hauv ib puag ncig nrog chloride ion corrosion. Tsis tas li ntawd, nws yuav tsum tau muab sau tseg tias tom qab 304 stainless hlau yeeb nkab yog khoov thiab extruded, nws corrosion kuj yuav txo; Tom qab stretching, lub toughness yuav txo. Yog li ntawd, thaum ua 304 welded kav, nws cov nqi txwv yuav tsum tau txiav txim siab.
