Dawb txiav steel yog ib hom hlau uas muaj kev ua haujlwm zoo heev, nrog kev txiav qis thiab yooj yim txiav, tig, milling, drilling, thiab lwm yam thaum txiav. Cov khoom tseem ceeb ntawm cov hlau tsis pub dawb yog carbon, silicon, manganese, thiab lwm yam, uas feem ntau muaj tsawg dua {{0}}.25 feem pua carbon. Silicon pawg feem ntau yog los ntawm 0.10 feem pua rau 0.40 feem pua, thiab cov ntsiab lus manganese nyob ntawm 0.30 feem pua rau 0.90 feem pua. Tsis tas li ntawd, nws tseem muaj cov ntsiab lus loj xws li phosphorus thiab sulfur, uas tuaj yeem txhim kho nws txoj kev txiav.
Dawb txiav steel yog tsim rau kev ua kom tsis muaj zog thiab siab zog qhov chaw, xws li screws, bearings, gears, automotive accessories, thiab hais txog. Nyob rau hauv cov txheej txheem machining xws li tig, milling, thiab drilling, dawb txiav hlau tuaj yeem txo qhov nyuaj machining, txhim kho kev tsim khoom, thiab xyuas kom zoo machining. Dawb txiav steel kuj tuaj yeem siv rau kev kho cua sov. Tom qab kev kho cov txheej txheem tsim nyog, nws tuaj yeem ua tiav qhov kev ua tau zoo thiab ductility, thiab feem ntau yog siv los tsim cov khoom uas yuav tsum tau muaj zog toughness.
Nyob rau hauv cov ntsiab lus, raws li ib yam ntawm cov khoom siv kho tshuab, dawb txiav steel plays lub luag haujlwm tseem ceeb hauv kev tsim khoom vim nws qhov kev ua tau zoo heev, thiab tau siv dav hauv ntau yam.
1. Hom yooj yim txiav steel
Dawb txiav steel yog ib pawg loj ntawm cov hlau uas tuaj yeem muab cais raws li cov ntsiab lus sib txawv thiab cov hom phiaj ua haujlwm. Muaj ntau hom hauv qab no:
Cov ntsiab lus carbon hauv qab 0.15 feem pua, tseem hu ua dawb txiav steel, haum rau cov txheej txheem machining xws li drilling, tig, thiab milling.
Muaj ib qho me me ntawm txhuas thiab sodium cov ntsiab lus, nws muaj kev ua haujlwm zoo dua thiab tsim nyog rau ntau yam txheej txheem machining.
Muaj cov hmoov txhuas me me, nws muaj kev ua haujlwm zoo dua thiab tsim nyog rau kev ua ntau yam me me thiab ua rivets.
Feem ntau yog siv rau kev tsim cov cuab yeej siv ceev ceev, xws li cov hniav, xyaum, txiav riam, thiab lwm yam.
2. Kev tsim cov txheej txheem ntawm cov hlau tsis pub dawb
Kev tsim cov txheej txheem ntawm cov hlau tsis pub dawb yog qhov tseem ceeb thiab feem ntau suav nrog cov kauj ruam hauv qab no:
Cov khoom siv raw rau kev tsim cov hlau yooj yim yog npua hlau thiab cov hlau cam khwb cia, uas tau los ntawm cov txheej txheem steelmaking.
Lub molten hlau tom qab steelmaking yog nruam nruam los ntawm ib tug nruam casting tshuab kom tau nruam casting billets.
Forging nruam casting billets kom tau cov hlau tsim.
Cov txheej txheem txias yog siv los kho cov hlau.
Tshawb xyuas cov hlau tiav kom paub meej cov khoom zoo.
3. Daim ntawv thov teb ntawm Dawb txiav hlau
Dawb txiav steel yog dav siv hauv cov nram qab no:
Aircraft, motors, instruments, textile machinery, thiab lwm yam.
Txoj kev, choj, cov tsev siab, thiab lwm yam.
Seamless steel kav, steel phaj, thiab lwm yam.
Cov kav dej, thiab lwm yam.
4. Qhov zoo thiab qhov tsis zoo ntawm cov hlau txiav dawb
Dawb txiav steel muaj qhov zoo thiab qhov tsis zoo hauv qab no:
Kev txiav yog ib qho yooj yim, ua tau zoo, thiab tuaj yeem ua rau hauv cov khoom ua tiav, uas yog nrov hauv kev ua haujlwm ntawm cov tshuab ua haujlwm.
Lub zog thiab toughness yog qhov nruab nrab, thaum cov khoom siv kho tshuab thiab kub tsis kam ntawm cov hlau txiav dawb ua cov khoom siv tsis zoo, thiab nws daim ntawv thov ntau yog nqaim.