Qhov Tseem Ceeb Qhov txawv - Cam khwb cia hlau vs cam khwb cia hlau
cam khwb cia hlau thiab cam khwb cia hlau yog ob hom hlau-carbon alloys. Qhov sib txawv tseem ceeb ntawm cov alloys no yog cov ntsiab lus carbon nyob rau hauv muaj pes tsawg leeg. Cam khwb cia hlau yog nplua nuj nyob rau hauv carbon ntau tshaj cam khwb cia hlau. cam khwb cia hlau muaj ntau tshaj 2% ntawm carbon thiab cam khwb cia hlau muaj tsawg tshaj li 2% ntawm carbon nyob rau hauv hnyav. Lub hom phiaj ntawm qhov casting nrog cov pa roj carbon no yog los hloov cov khoom ntawm cov hlau rau kev siv siab heev. Vim tias, hlau nws tus kheej ib leeg yog cov hlau mos thiab nws tsis zoo tagnrho rau cov khoom siv. Tsis muaj ntau qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm ob lub alloys, tab sis lawv lub cev muaj zog sib txawv. Ob qho tib si ntawm cov no yog cov hlau tseem ceeb sib npaug hauv metallurgy hauv ntau txoj kev.
Cast Steel yog dab tsi?
Cam khwb cia hlau yog carbon hlau alloy uas muaj tsawg dua 2% ntawm cov pa roj carbon los ntawm qhov hnyav. Cov khoom no yog tsim los ntawm cua sov hlau siv lub thawv crucible. Ntxiv nrog rau cov pa roj carbon thiab hlau, cov cam khwb cia hlau muaj ib lossis ntau lwm yam hlau xws li manganese, tooj liab, txhuas, silicon, lossis chromium. Cov ntsiab lus no tau ntxiv los txhim kho lub cev thiab cov khoom siv kho tshuab thiab cov khoom tiv thaiv corrosion. Tsis tas li ntawd, cob alt, columbium, molybdenum, npib tsib xee, titanium, tungsten, vanadium, zirconium, thiab lwm yam khoom raug ntxiv kom tau txais cov khoom siv hlau uas xav tau.
Cast Iron yog dab tsi?
cam khwb cia hlau yog ib tug tswv cuab ntawm tsev neeg hlau-carbon alloy nrog cov ntsiab lus carbon ntau dua 2%. Nws yog ib qho ntawm cov laus tshaj plaws ferrous alloys siv hauv kev tsim kho thiab sab nraum zoov ornaments. Nws yog tawv, nkig, nonmalleable thiab ntau fusible piv rau steel. Tab sis cov khoom sib txawv me ntsis nyob ntawm seb muaj pes tsawg leeg ntawm cov khoom. Muaj ntau ntau hom cam khwb cia hlau xws li dawb cam khwb cia hlau, malleable cam khwb cia hlau, ferritic malleable cam khwb cia hlau, grey cam khwb cia hlau, thiab ductile hlau. Ntxiv nrog rau hlau thiab carbon, cov alloys muaj silicon, manganese, sulfur thiab phosphorous.
Qhov txawv ntawm Cast Steel thiab Cast Iron yog dab tsi?
Composition:
Cast Steel:
Hlau yog lub ntsiab hauv cov hlau cam; Nws tseem muaj tsawg dua 2% ntawm carbon los ntawm qhov hnyav. Nws kuj tseem yuav muaj ib lossis ntau ntawm cov ntsiab lus hauv qab no. Kev sib xyaw sib txawv raws li daim ntawv thov.
- Manganese - siab dua 1.65%
- Silicon - siab dua 0.60%
- Copper - siab dua 0.60%
- Aluminium - mus txog 3.99%
- Chromium - mus txog 3.99%
Cast Iron:
Peb lub ntsiab tseem ceeb hauv cov hlau cam yog carbon, hlau thiab silicon. Nws feem ntau muaj hlau (95%) thiab tshaj 2% carbon los ntawm qhov hnyav. Tsis tas li ntawd, nws muaj qee cov ntsiab lus hauv cov khoom me me, nyob ntawm kev siv. Piv txwv ntawm cov ntsiab lus yog manganese, phosphorous thiab sulfur.
Qhov zoo:
Cast Steel:
Cam khwb cia hlau yog hloov tau, yog li ntawd, nws yooj yim heev los tsim cov duab nyuaj thiab hollow hla ntu ntu. Qhov no kuj muaj kev hloov pauv ntawm kev tsim khoom; uas tso cai rau xaiv qhov sib txawv ntawm qhov sib txawv thiab kev xaiv kev kho cua sov sib txawv. Nws muab cov khoom xws li zoo weldability thiab workability.
Cast Iron:
Ntau yam ntawm cov cam khwb cia hlau muaj qhov zoo sib txawv vim lawv cov khoom tshwj xeeb; lawv yog siv raws li qhov xwm ntawm daim ntawv thov. Qee qhov txiaj ntsig tau teev tseg hauv qab no.
- Grey cam khwb cia hlau: Muaj cov khoom zoo casting, kev co damping, hnav tsis kam, machinability thiab qis rhiab heev.
- Cov hlau tsis huv thiab cov hlau tsis muaj zog: Lawv muaj zog thiab muaj txiaj ntsig ntau dua rau cov khoom siv hluav taws xob, kub ua haujlwm, thiab tawv. Hauv qee daim ntawv thov, lawv tau siv los ua lwm txoj hauv kev rau carbon steel.
Disadvantages:
Cast Steel:
Cam khwb cia hlau yog qhov sib piv kim dua cov hlau cam. Nws muaj qhov tsis zoo xws li tsis zoo co-suction, tsis tshua muaj hnav tsis kam, kev txav mus los thiab kev ua haujlwm casting.
Cast Iron:
Grey cam khwb cia hlau: Nws lub zog tensile thiab elongation tsawg heev.
Cov hlau tsis huv thiab cov hlau tsis huv: Cov nqi tsim khoom ntawm cov ntaub ntawv no kuj siab. Cov txheej txheem yog complex, thiab nws yuav tsum tau advanced technology.
