Kev tiv thaiv kev lag luam xav tau cov khoom siv nrog qee yam yam ntxwv uas pab cov cuab yeej siv tau zoo thiab ua haujlwm tsis tu ncua. Rau cov hlau, nws siv nyob rau hauv kev lag luam no stems los ntawm nws lub zog, corrosion thiab kub tsis kam, thiab durability, muaj nyob rau hauv tso tsheb hlau luam, tub rog aircraft, thiab naval nkoj. Muaj ntau ntau hom hlau muaj, xws li stainless hlau, ballistic steel, thiab siab -lub zog qis- alloy steel. Txawm li cas los xij, cov hlau peb yuav tsom mus rau hnub no yog S235 steel. Qib no ntawm cov hlau tsis tshua muaj cov qauv hlau yog siv ntau txoj hauv kev hauv kev lag luam tiv thaiv, los ntawm cov khoom siv ntawm cov tsev tub rog mus rau cov neeg ua haujlwm armored thiab nkoj hulls. Koom nrog peb thaum peb piav qhia ntxiv txog S235 steel, nrog rau nws cov kev hloov pauv thiab yog vim li cas nws yuav tsum yog koj xaiv cov hlau rau kev siv tiv thaiv.
S235 yog qib ntawm cov qauv hlau nrog cov ntsiab lus qis carbon, nws qhov nyiaj siab tshaj yog 0.22% los ntawm qhov hnyav. Nws weldability, formability, thiab lub zog yog tag nrho ua tsaug rau nws txo cov ntsiab lus carbon. Cov hlau no tseem muaj lwm yam khoom siv tshuab, suav nrog:
Lub zog tensile ntawm 360 - 510 MPa
Lub hardness ntawm 100 - 154 Brinell
Kev cuam tshuam zoo.
Cov yam ntxwv ntawm S235 steel nyob ntawm seb nws muaj pes tsawg leeg. Yog li ntawd nws yog ib qho tseem ceeb heev uas cov hlau ntau lawm yog meticulously tswj los tsim cov yam ntxwv zoo. Hauv qab no yog cov ntsiab lus, thiab lawv cov feem pua siab tshaj plaws, siv thaum tsim S235 steel:
Cov pa roj carbon (<0.22%): Xyuas kom cov hlau tuaj yeem raug vuam thiab tsis xav tau kev ceev faj tshwj xeeb.
Silicon (<0.5%): Txhawb galvanization kom paub tseeb tias cov hlau tuaj yeem xa cov kev tiv thaiv corrosion.
Manganese (<1.60%): Ua kom cov hlau hardenability thiab zog.
Sulfur (<0.040%): Siv ib feeb ntawm leej faj tuaj yeem txhim kho qhov kev nkag mus rau vuam thiab ua haujlwm.
Phosphorus (<0.040%): Kev siv phosphorus tuaj yeem txhim kho tensile thiab yield zog ntawm cov hlau.
Tus nqi - kev ua tau zoo
Nyiaj txiag - cov ntaub ntawv phooj ywg: Hauv cov ntsiab lus tiv thaiv, tus nqi feem ntau yog qhov tseem ceeb rau kev txiav txim siab. S235 steels kuj pheej yig piv rau qee qhov kev ua haujlwm siab -, tshwj xeeb steels. Qhov no tso cai rau cov phiaj xwm kev tiv thaiv los faib cov peev txheej tau zoo dua, tshwj xeeb tshaj yog rau qhov loj - cov txheej txheem loj lossis cov cuab yeej tsim khoom uas yuav tsum muaj cov hlau ntau. Piv txwv li, thaum tsim cov tub rog barracks, kev siv cov hlau S235 tuaj yeem pab txo cov nqi tsim kho yam tsis muaj kev cuam tshuam cov qauv kev ncaj ncees.
Muaj thiab yooj yim ntawm kev yuav khoom
Muaj dav: S235 steels yog tsim los ntawm ntau lub tuam txhab hlau thoob ntiaj teb. Lawv qhov muaj dav dav txhais tau hais tias hauv kev tiv thaiv kev ua haujlwm, txawm tias nyob rau hauv kev thaj yeeb nyab xeeb rau kev tsim kho vaj tse lossis thaum muaj kev tsis sib haum xeeb rau kev tsim khoom sai, cov khoom siv tau yooj yim. Muaj kev pheej hmoo tsawg dua ntawm kev cuam tshuam ntawm cov khoom sib txuas piv rau cov hlau tsis tshua muaj lossis ntau dua tshwj xeeb. Piv txwv li, yog tias lub hauv paus tub rog xav tau kev tsim kho sai hauv thaj chaw deb, qhov chaw muaj S235 steel tuaj yeem pab txhawb txoj kev tsim kho.
Mechanical Properties rau Basic Requirements
Muaj zog txaus: S235 steels muaj qhov tsawg kawg nkaus yield zog ntawm 235 MPa (rau tej thicknesses). Qhov no tsim nyog rau ntau yam tsis yog - siab - kev tiv thaiv kev ntxhov siab. Piv txwv li, nyob rau hauv kev tsim kho ntawm cov tsheb tsis yog - armored tsheb, xws li tsheb thauj mus los lossis lub teeb hluav taws xob tsheb, S235 steel tuaj yeem muab lub zog tsim nyog los txhawb lub tsheb cov qauv, kev thauj mus los, thiab tiv taus kev ua haujlwm ib txwm muaj.
Zoo formability: S235 steels muaj zoo formability, uas txhais tau tias lawv tuaj yeem yooj yim zoo li zoo li ntau yam. Qhov no yog qhov tseem ceeb hauv kev tiv thaiv kev tsim khoom, qhov sib txawv - zoo li qhov feem ntau xav tau. Piv txwv li, nws tuaj yeem khoov thiab welded los tsim cov thav duab ntawm cov chaw tub rog lossis lub cev panels ntawm tsis yog - armored tsheb.
Weldability thiab Repairability
Yooj yim ntawm vuam: S235 steels muaj weldability zoo heev. Hauv kev tiv thaiv, qhov kev kho sai thiab ntawm - qhov chaw tsim khoom yuav tsim nyog, muaj peev xwm vuam cov khoom siv tau yooj yim yog qhov zoo dua. Piv txwv li, yog tias lub tsheb tub rog lossis cov khoom siv puas tsuaj hauv thaj teb, S235 cov khoom siv hlau tuaj yeem txuas tau sai sai rov qab ua ke, txo qis sijhawm.
Nqi - kho kom zoo: Kev sib xyaw ua ke ntawm weldability zoo thiab tus nqi qis ua rau kev kho ntawm S235 steel - raws li cov cuab yeej tiv thaiv tus nqi - zoo. Qhov no yog qhov tseem ceeb rau kev tswj hwm lub nkoj loj ntawm cov cuab yeej ua tub rog lossis kev tsim kho vaj tse nyob rau lub sijhawm.
Compatibility nrog Standard Manufacturing txheej txheem
Paub cov txheej txheem tsim khoom: Feem ntau kev tiv thaiv kev lag luam tau nruab nrog cov qauv steel - ua haujlwm tshuab thiab muaj cov neeg ua haujlwm tau kawm hauv cov hlau - cov txheej txheem ua haujlwm. S235 steels tau sib xws nrog cov txheej txheem tsim khoom uas twb muaj lawm, xws li txiav, machining, thiab cua sov - kho. Qhov no txo qhov kev xav tau ntawm cov cuab yeej tshwj xeeb thiab kev cob qhia, ua kom cov txheej txheem ntau lawm thiab kev saib xyuas. Piv txwv li, cov txheej txheem milling thiab tig cov cav tov tuaj yeem siv rau tshuab S235 steel Cheebtsam rau kev siv tub rog.
