Taw qhia
Cov pa roj carbon steel yog cov khoom siv nrov rau kev tsim khoom ntau yam, los ntawm cov tsev thiab cov vaj tse mus rau cutlery thiab cov khoom ua noj. Tab sis ntau tus neeg xav tias carbon steel rusts yooj yim, thiab yog tias muaj, yuav ua li cas los tiv thaiv nws. Hauv tsab xov xwm no, peb yuav tshawb xyuas cov khoom ntawm cov pa roj carbon steel, tshuaj xyuas cov yam ntxwv uas ua rau muaj xeb, thiab sib tham txog cov tswv yim los tiv thaiv thiab tshem tawm xeb.
carbon steel yog dab tsi?
Cov pa roj carbon steel yog ib hom hlau uas muaj feem ntau ntawm cov hlau thiab cov pa roj carbon monoxide, nrog rau lwm cov ntsiab lus. Cov ntsiab lus carbon tuaj yeem nyob ntawm {{0}}.05% txog 2.0%, nyob ntawm seb cov khoom xav tau ntawm cov hlau. Cov pa roj carbon steel tau muab faib ua peb pawg tseem ceeb raws li cov ntsiab lus carbon:
- Tsawg carbon steel (0.05% rau 0.30% carbon)
- Nruab nrab carbon steel (0.30% rau 0.60% carbon)
- High carbon steel (0.60% rau 2.0% carbon)
Cov ntsiab lus carbon muaj qhov cuam tshuam loj rau cov khoom thiab kev ua haujlwm ntawm cov hlau. Cov pa roj carbon tsawg yog ib qho yooj yim rau welding thiab muaj cov qauv zoo, tab sis nws tsis muaj zog npaum li cov pa roj carbon ntau. High carbon steel yog ib qho nyuaj thiab hnav-resistant, tab sis nws kuj yog nkig thiab nyuaj ua hauj lwm nrog. Cov pa roj carbon nruab nrab muaj kev sib haum xeeb ntawm lub zog thiab kev ua haujlwm, ua rau nws yog qhov kev xaiv nrov rau ntau daim ntawv thov.
Dab tsi ua rau xeb ntawm carbon steel?
Kev xeb yog qhov tshwm sim ntawm cov tshuaj tiv thaiv ntawm hlau, oxygen, thiab dej. Cov pa roj carbon steel muaj hlau ua nws cov khoom tseem ceeb, uas txhais tau hais tias nws muaj kev cuam tshuam rau xeb tsim. Lub xub ntiag ntawm carbon tsis ncaj qha ua rau xeb, tab sis nws tuaj yeem ua kom cov txheej txheem los ntawm kev ua cov hlau ntau dua rau cov pa thiab ya raws.
Cov yam ntxwv uas ua rau xeb tsim
Ntau yam tuaj yeem ua rau muaj kev xeb ntawm cov hlau, xws li:
- Kev raug dej noo: Dej yog ib qho tseem ceeb ntawm kev tsim xeb, yog li cov khoom siv carbon steel uas raug cov dej noo mus ntev yuav muaj kev pheej hmoo ntawm xeb. Qhov no tuaj yeem yog ib qho teeb meem rau kev tsim vaj tsev sab nraum zoov, xws li txuas hniav thiab vaj tse, nrog rau cov khoom siv sab hauv tsev uas raug rau qhov chaw ntub dej, xws li cov khoom siv hauv chav ua noj thiab chav dej.
- Cov pa oxygen: Cov pa oxygen kuj xav tau rau kev tsim xeb, yog li cov khoom siv carbon steel uas raug huab cua rau lub sijhawm ntev yuav muaj kev pheej hmoo ntawm xeb. Qhov no tuaj yeem yog teeb meem rau cov khoom uas tau coated nrog cov xim lossis lwm yam kev tiv thaiv tiav, vim tias cov txheej txheem no tuaj yeem tawg tau dhau sijhawm thiab nthuav tawm cov hlau hauv qab rau oxygen.
- Cov ntsiab lus carbon: Raws li tau hais dhau los, cov hlau carbon siab muaj ntau dua cov pa oxygen thiab cov dej noo ntau dua li cov hlau tsis muaj cov pa roj carbon tsawg, uas txhais tau tias nws yooj yim dua rau xeb tsim.
- Kub: Kev tsim xeb tuaj yeem ua kom nrawm nrawm los ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv cov dej noo. Qhov no tuaj yeem ua rau muaj kev txhawj xeeb rau cov khoom uas raug tshav kub thiab av noo, xws li cov khoom siv hauv chav ua noj thiab cov khoom siv tsheb.
- Kev raug ntsev: ntsev tuaj yeem ua kom cov txheej txheem xeb los ntawm kev muab cov khoom siv hluav taws xob ntau dua rau cov hluav taws xob ntws ntawm cov hlau thiab cov dej noo. Qhov no tuaj yeem ua rau muaj kev txhawj xeeb rau cov khoom uas raug dej ntsev, xws li cov nkoj, cov chaw nres nkoj, thiab cov kav dej.
Tiv thaiv xeb ntawm carbon steel
Muaj ntau ntau lub tswv yim los tiv thaiv xeb ntawm cov khoom siv hlau, suav nrog:
- Txheej: Siv cov txheej tiv thaiv rau cov hlau tuaj yeem pab tiv thaiv kev xeb los ntawm kev tsim ib qho kev thaiv ntawm cov hlau thiab ib puag ncig ib puag ncig. Cov txheej txheem muaj xws li xim, epoxy, thiab hmoov txheej. Cov txheej txheem no tuaj yeem siv rau cov khoom siv sab hauv thiab sab nraum zoov, tab sis lawv yuav xav tau kev saib xyuas ib ntus kom ntseeg tau tias lawv nyob twj ywm.
- Galvanizing: Galvanizing yog txheej txheem uas cuam tshuam cov hlau nrog txheej zinc, uas ua raws li kev txi anode los tiv thaiv cov hlau hauv qab los ntawm xeb. Galvanized steel feem ntau yog siv rau sab nraum zoov infrastructure, xws li cov txuas hniav thiab cov khoom siv hluav taws xob, nrog rau cov khoom lag luam uas raug rau qhov chaw hnyav.
- Stainless hlau: Stainless hlau yog cov hlau alloy uas muaj tsawg kawg yog 10.5% chromium, uas tsim cov txheej txheem tiv thaiv oxide ntawm cov hlau uas tiv thaiv xeb tsim. Stainless hlau feem ntau yog siv rau hauv chav ua noj, tais diav, thiab lwm yam khoom uas yuav tsum tau muaj kev tiv thaiv corrosion.
- Kev khaws cia kom zoo: khaws cov khoom siv carbon steel hauv qhov chaw qhuav tuaj yeem pab tiv thaiv xeb tsim los ntawm kev txo qis ntawm cov dej noo thiab av noo. Qhov no tuaj yeem yog qhov tseem ceeb tshwj xeeb rau cov khoom uas tsis siv ntau zaus, xws li cov cuab yeej thiab cov khoom siv.
- Kev saib xyuas tsis tu ncua: Kev tu thiab tu tsis tu ncua tuaj yeem pab tiv thaiv xeb tsim los ntawm kev tshem tawm cov av, khib nyiab, thiab lwm yam kab mob uas tuaj yeem cuam tshuam cov dej noo ntawm cov hlau. Qhov no tuaj yeem yog qhov tseem ceeb tshwj xeeb rau cov khoom uas raug rau qhov chaw sab nraum zoov lossis cov xwm txheej hnyav.
Tshem tawm xeb los ntawm carbon steel
Yog tias xeb ua rau cov khoom siv carbon steel, muaj ntau lub tswv yim los tshem tawm, suav nrog:
- Mechanical txoj kev: Scraping, sib tsoo, thiab xuab zeb tuaj yeem ua tau zoo rau kev tshem tawm xeb ntawm cov khoom siv carbon steel. Txawm li cas los xij, cov txheej txheem no tuaj yeem ua rau cov hlau hauv qab thiab tsim ib qho chaw ntxhib uas muaj kev cuam tshuam ntau dua rau xeb tsim yav tom ntej.
- Cov txheej txheem tshuaj: Cov tshuaj xeb tshem tawm tuaj yeem pab yaj cov xeb los ntawm cov khoom siv hlau tsis muaj kev puas tsuaj rau cov hlau hauv qab. Cov khoom no feem ntau muaj cov kua qaub lossis cov kuab tshuaj uas ua rau cov xeb thiab tso cai rau nws mus so.
- Electrolysis: Electrolysis yog txheej txheem uas siv cov hluav taws xob qis hluav taws xob kom tshem tawm xeb los ntawm cov khoom siv carbon steel. Txoj kev no siv tau zoo rau kev tshem tawm cov kab sib sib zog nqus, tab sis nws yuav tsum tau siv cov cuab yeej tshwj xeeb thiab tuaj yeem kim.
Xaus
Hauv kev xaus, cov pa roj carbon steel tuaj yeem xeb yooj yim yog tias nws raug ya raws, oxygen, thiab lwm yam ib puag ncig. Txawm li cas los xij, muaj ntau lub tswv yim los tiv thaiv thiab tshem tawm xeb, nrog rau cov txheej txheem, galvanizing, stainless hlau, kev cia kom zoo, thiab kev saib xyuas tsis tu ncua. Los ntawm kev ua cov kauj ruam no, nws muaj peev xwm txo qhov kev pheej hmoo ntawm xeb tsim thiab txuas ntxiv lub neej ntawm cov khoom siv carbon steel.
