Hauv kev lag luam thoob ntiaj teb niaj hnub no, uas nrhiav kev ceev ceev, cov khoom siv kho tshuab zoo heev, thiab cov txheej txheem nyias nyias- cov phab ntsa,calcium silicon alloys, vim lawv cov haujlwm tshwj xeeb sib xyaw, tau dhau los ua qhov tseem ceeb ua ntej - cov khoom siv kho cua sov hauv kev tsim cov hlau ductile, vermicular graphite cam khwb cia hlau, thiab siab -kawg cam khwb cia hlau.

AON METALS muaj cov khoom tsim- qib silicon calcium alloys, cov khoom sib xyaw ua kom zoo rau cov txheej txheem casting. Ua los ntawm cov txheej txheem electrosilicon thermal, nws muaj qhov sib piv ntawm cov ntsiab lus tseem ceeb calcium (Ca) thiab silicon (Si), nrog kev tswj nruj ntawm cov ntsiab lus ntawm impurities xws li carbon (C), sulfur (S), thiab phosphorus (P). Nws ib txhij ua tiav peb lub luag haujlwm tseem ceeb: sib sib zog nqus deoxidation, ua haujlwm zoo spheroidization, thiab muaj zog inoculation, txhim kho cov txiaj ntsig casting thiab kev ua tau zoo sib xws.

Element	Cov ntsiab lus ntau	Lub luag haujlwm hauv Casting
Calcium (Ca)	25%-35%	Txhim kho deoxidation, txhawb nqa graphite nodularization
Silicon (Si)	55%-65%	Inoculation, txhim kho yaj fluidity
Hlau (Fe)	Tsawg dua lossis sib npaug li 5%	Alloy puag, ua kom ruaj khov
Cov pa roj carbon (C)	Tsawg dua los yog sib npaug li 0.5%	Tsis txhob tsim cov carbide hauv cam khwb cia hlau
Sulfur (S)	Tsawg dua lossis sib npaug li 0.03%	Txo qhov kub cracking txaus ntshai
Phosphorus (P)	Tsawg dua lossis sib npaug li 0.04%	Txhim kho qhov ductility ntawm casting

Calcium Silicon Alloy For Casting

Technical Specifications thiab Kev Xaiv Phau Ntawv Qhia

Qib	Tshuaj muaj pes tsawg leeg							Loj	Daim ntawv thov scenarios thiab tus nqi tseem ceeb
	Ca	Si	CTsawg dua los yog sib npaug	AlTsawg dua los yog sib npaug	PTsawg dua los yog sib npaug	STsawg dua los yog sib npaug	Fe
Siab -calcium ductile iron	30-35	55-60	0.5	2.4	0.04	0.04	paj ntaub	Granular:1-3mm, 3-6mm; Lub pob:10-50 hli	Cam khwb cia hlau:Cov ntsiab lus calcium siab kom ntseeg tau siab spheroidization tus nqi thiab me me spheroid txoj kab uas hla, haum rau cov khoom tseem ceeb ntawm cov hlau xws li cov uas siv rau hauv lub zog cua thiab lub tsheb chassis.
Grey hlau / hlau hlau	25-30	60-65	0.5	2.5	0.04	0.04	paj ntaub	Ib yam li saum toj no	Grey Cam khwb cia hlau / Ordinary Ductile Iron:Sib npaug tus nqi thiab kev ua tau zoo, txhim kho graphite morphology, txo cov cam khwb cia hlau nyiam, thiab txhim kho machinability.
Tsawg- impurity precision casting	28-32	62-65	0.3	1.5	0.03	0.02	paj ntaub	Hmoov zooLoj: 0.2-1mm GranularLoj: 1-3mm	Precision Cast Steel, Thaum tshav kub kub-Resistant Alloys:Ultra-tsawg impurities, siv los ua cov txheej nyias nyias-walled castings yuav tsum tau purity siab heev.
Heavy-cov haujlwm cam khwb cia hlau	25-30	58-62	0.3	2.0	0.04	0.04	paj ntaub	Lub pobLoj: 10-100mm	Loj Cast Steel Parts (xws li mining machinery thiab shipbuilding qhov chaw):Zoo deoxidizes, txo qhov kev pheej hmoo ntawm shrinkage kab noj hniav thiab kub tawg.

Mechanisms ua hauj lwm: Vim li cas Ca-Si Alloy Outperforms Ib Additives

Lub superiority ntawm silicon calcium alloy nyob rau hauv casting yog nyob rau hauv lub synergistic nyhuv ntawm calcium thiab silicon -hais ntau yam kev sib tw casting ib txhij, tsis zoo li ib tug additives (xws li,ferro silicontsuas yog inoculates; calcium ntshiab yog heev reactive thiab txaus ntshai los lis).

2.1 Synergistic Deoxidation: Txo Oxide Inclusions

Calcium lub luag haujlwm:

Calcium muaj ntau dua oxygen affinity (tus qauv dawb zog ntawm kev tsim ntawm CaO: -604 kJ / mol) dua silicon (SiO₂: -856 kJ / mol ntawm 1500 degree). Nws sai sai nrog cov pa oxygen yaj hauv cov hlau molten los ua CaO, uas ua raws li "scavenger" rau cov khoom zoo oxide.

Silicon lub luag haujlwm:

Silicon cov ntaub ntawv ruaj khov SiO₂, uas ua ke nrog CaO los ua qis - melting -point CaSiO₃ (melting point 1544℃). Qhov sib xyaw no ntab yooj yim mus rau txheej slag, txo cov oxide suav nrog 40%.

Qhov tshwm sim:

Molten hlau oxygen cov ntsiab lus raug txo kom tsawg dua los yog sib npaug li 0.002%, txiav cov nqi tsis xws luag (piv txwv li, porosity, shrinkage) los ntawm 35-50% hauv cov khoom siv xws li cov cav ntoo.

2.2 Graphite Nodularization & Inoculation: Txhim kho cov cuab yeej cuab tam

Nyob rau hauv ductile hlau casting, lub alloy daws ob qhov teeb meem tseem ceeb:

"dawb hlau nyiam" (brittleness los ntawm carbide tsim) thiab tsis sib xws graphite faib:

Nodularization:

Calcium adsorbs ntawm graphite siv lead ua nto, hloov txoj kev loj hlob ntawm flake mus rau spherical. Qhov no txhawb zog tensile los ntawm 20% thiab cuam tshuam toughness los ntawm 25%.

Inoculation:

Silicon txhawb kev tsim cov nplua, sib npaug graphite nodules, refining grain qauv thiab xyuas kom zoo ib yam hardness (deviation tsawg tshaj li los yog sib npaug rau 5 HB hla casting cross-sections).

2.3 Txhim kho Molten Hlau Fluidity: Qhov tseem ceeb rau Complex Castings

Silicon txo qhov melting point ntawm molten hlau / hlau los ntawm 50-80 degree, txo viscosity thiab txhim kho fluidity los ntawm 10-15%-ib qho kev ua si- hloov pauv rau nyias-walled lossis intricate castings:

Mechanism:Silicon cuam tshuam cov txheej txheem ntawm cov hlau atoms hauv lub xeev molten, txo cov kev sib txhuam sab hauv. Piv txwv li, molten ductile hlau nrog 60% Si cov ntsiab lus (los ntawm Ca-Si alloy) ntws mus rau 12% nyob rau hauv qhov kev ntsuam xyuas ntawm kauv fluidity dua li cov hlau tsis kho.
Cov txiaj ntsig:Enables zus tau tej cov complex Cheebtsam xws li automotive lub tog raj kheej taub hau (phab ntsa thickness<5 mm) without cold shuts or incomplete filling.

2.4 Desulfurization & Kub Cracking Tiv Thaiv

Desulfurization:

Calcium reacts nrog sulfur los tsim CaS ruaj khov (lub ntsiab lus melting 2450 degree), uas yog insoluble hauv molten hlau thiab tshem tawm nrog slag. Qhov no txo cov ntsiab lus sulfur kom tsawg dua lossis sib npaug li 0.015%, qhov tseem ceeb rau siab -lub zog steel castings (xws li, choj txhawb nqa) uas yuav tsum tau qis brittleness.

Kub Cracking Tiv Thaiv:

Cov ntsiab lus tsis tshua muaj leej faj (tsawg dua lossis sib npaug li 0.03%) txo qis qhov sib txawv ntawm cov hlau molten, txo cov kev ntxhov siab sab hauv thaum txias. Ib lub chaw tsim khoom hauv Suav teb tau tshaj tawm txog 35% txo qhov kub tawg tsis xws luag hauv cov tshuab mining castings tom qab siv Ca-Si alloy.

Calcium silicon alloy for casting

Yuav Ua Li Cas Xaiv Txoj Cai Ca-Si Alloy rau Koj Lub Chaw Tsim Khoom

Xaiv qhov raug qib thiab specifications ntawm Ca-Si alloy yog ib qho tseem ceeb rau optimizing casting zoo thiab nqi. Hauv qab no yog ib kauj ruam -los ntawm- cov lus qhia kauj ruam rau cov neeg yuav khoom txawv teb chaws, raws li hom rauv, cov khoom siv casting, thiab cov ntawv thov.

Kauj Ruam 1: Sib piv qib rau cov khoom siv Casting

Casting Khoom	Qhov yuav tsum tau muaj	Pom zoo Ca-Si Alloy Qib
Hlau Hlau	High nodularization efficiency	Ca 30–35%, Si 55–60%, S / P Tsawg dua lossis sib npaug li 0.03% / 0.04%
Grey Hlau	Zoo machinability & fluidity	Ca 25–30%, Si 60–65%, S/P Tsawg dua lossis sib npaug li 0.03% / 0.04%
Precision hlau Casting	Ultra{0}}tsawg impurities	Ca 28–32%, Si 62–65%, S/P Tsawg dua lossis sib npaug li 0.02% / 0.03%
Heavy-Lub luag haujlwm Steel Casting	Tsawg shrinkage	Ca 25–30%, Si 58–62%, C Tsawg dua lossis sib npaug li 0.3%

Kauj Ruam 2: Xaiv Qhov Loj Raws Li Lub Zog Muaj Peev Xwm

Qhov cub me me (tsawg dua lossis sib npaug li 5 tons): Siv cov hmoov nplej (0.2–2 mm) los yog nplua granules (1–3 mm) kom tawg sai (tsis txhob muaj cua sov tsis sib xws hauv cov ntim me me).

Nruab nrab rauv (5-50 tons): Siv cov granules (3-6 mm) kom sib npaug sib npaug ceev thiab tuav tau yooj yim.

Cov Rauv Loj (Ntau dua lossis sib npaug li 50 tons): Siv cov pob (10–50 mm) kom txo tau qhov kub hnyiab (cov khoom loj muaj qhov tshwj xeeb hauv qab, txo qis oxidation).

Calcium Silicon Alloy