Silicon-barium-calcium modifying alloy (SiBaCa): muaj pes tsawg leeg thiab thaj chaw tseem ceeb ntawm daim ntawv thov
Cov kab lus keeb kwm yav dhau · Hloov kho 08/11/2026 · Cov khoom sib xyaw ua ke sawv cev rau cov txiaj ntsig kev lag luam ib txwm muaj - Thov xa mus rau tus neeg muag khoom COA thiab kev yuav khoom tshwj xeeb rau kev tshuaj xyuas tshuaj lom neeg.
Cov kev tshawb pom tseem ceeb
Alloysilicon{0}}barium-calcium (SiBaCa)muaj Si, Ba, Ca thiab Fe ua cov ntsiab lus tseem ceeb - feem ntau Si txog 50–65%, Ba txog 4–14%, Ca txog 1–8%, tus so - Fe.
Hauv steelmakingnws ua hauj lwm raws li ib tug deoxidizer, desulfurizer (desulfurizer) thiab modifier ntawm non-metallic inclusions; barium txo qhov vapor siab ntawm calcium thiab nce nws nqus los ntawm yaj.
Nyob rau hauv foundryyog ib tug muaj zog graphitization modifier rau high-strength cam khwb cia hlau (DC): txhawb graphitization, refines graphite lug, tsub kom lub℃ntawm spheroidization thiab yog resistant rau fading (rov qab fading-effect) ntawm kev hloov kho.
Dephosphorization (dephosphorization) tsis yog lub luag haujlwm tseem ceeb ntawm SiBaCa alloys; Kev tshem tawm phosphorus nyob ntawm kev siv tshuab ua haujlwm nrog lub ntsiab slag.
1. Kev sib xyaw ntawm silicon-barium-calcium alloy
SiBaCa - yog ib qho nyuaj alloy los ntawm tsev neeg barium alloy. Nws cov ntsiab lus tseem ceeb yog silicon, barium thiab calcium, nrog qhov sib npaug yog hlau. Cov ntsiab lus sib txawv: Si txog 50-65%, Ba txog 4-14% thiab Ca txog 1-8% (xyuas COA). Thov nco ntsoov tias calcium carbide (CaC2) thiab barium sulfate (BaSO4) tsuas yog smelting raw cov ntaub ntawv rau kev qhia calcium thiab barium rau hauv cov txheej txheem ntau lawm; lawv tsis yog ib feem ntawm cov tiav alloy.
2. Lub luag haujlwm hauv steelmaking
Hauv kev tsim cov hlau, SiBaCa yog siv los ua ib qho kev ua haujlwm zoo deoxidizer thiab desulfurizer. Barium txo qhov vapor siab ntawm calcium, nce nws cov solubility hauv molten steel ntawm smelting kub thiab txo calcium poob los ntawm oxidation. Qhov no ua rau nws muaj peev xwm ua tiav cov kev kho calcium zoo - kom nce qib ntawm Ca absorption thiab hloov kho oxide thiab sulfide inclusions. Lub alloy yog siv nyob rau hauv cov ntaub ntawv uas cov steel specification yuav tsum tau tswj cov duab ntawm non-metallic inclusions.
3. Lub luag haujlwm hauv kev hloov kho cov hlau nplaum (DC)
Thaum nrum high-strength cam khwb cia hlau, SiBaCa yog dav siv los ua graphitizing modifier, qhia ua ke nrog pob-forming additives. Nws:
Txhawb nqa graphitization thiab txo qhov nyiam txias (tsim ntawm cov hlau cam khwb cia dawb);
Txhim kho cov morphology ntawm graphite, sib tsoo nws cov inclusions thiab nce qib ntawm spheroidization;
Qhia tau zoo heev tiv thaiv kev twv ( khaws cov kev hloov kho thaum lub sij hawm ntev raug ntawm yaj);
Muaj tsawg rhiab heev rau lub thickness ntawm cov phab ntsa casting, muab ib homogeneous qauv;
Tseem ceeb txo tus txheeb ze hardness ntawm qhov chaw, uas ho txhim kho lawv machinability.
Kev noj ib txwm yog kwv yees li 0.1-0.3% ntawm cov yaj loj thiab hloov kho nyob ntawm cov tshuaj muaj pes tsawg leeg ntawm cov hlau cam khwb cia qub thiab cov thickness ntawm cov ntu casting.
4. Sib tsoo ntawm graphite hauv castings
Thaum tsim cov hlau cam khwb cia muaj zog, SiBaCa kho kho cov qauv graphite thiab nce qib ntawm spheroidization, ua rau kev faib cov graphite hauv cov cam khwb cia hlau zoo thiab zoo ib yam. Kev sib xyaw ua ke ntawm kev muaj peev xwm graphitizing siab thiab tsis kam mus rau casting ua rau cov hlau no yog qhov kev xaiv zoo tshaj plaws thaum casting qhov loj lossis nyias-walled cov khoom, qhov uas qhov kev pheej hmoo ntawm kev hloov pauv thiab kev tsim carbide yog siab tshaj.
Cov lus nug nquag
B1. Dab tsi yog SiBaCa alloy ua los ntawm?
Los ntawm silicon, barium thiab calcium nrog sib npaug ntawm hlau - feem ntau Si 50–65%, Ba 4–14%, Ca 1–8%; Thov xa mus rau Daim Ntawv Pov Thawj Kev Ntsuam Xyuas (COA) kom muaj nuj nqis.
B2. Dab tsi yog qhov pom zoo modifier noj?
Feem ntau hais txog 0.1-0.3% los ntawm qhov hnyav ntawm cov yaj thaum hloov cov hlau nplaum; Tus nqi noj yog hloov raws li qhov yooj yim muaj pes tsawg leeg ntawm cov cam khwb cia hlau thiab thickness ntawm lub casting.
B3. Vim li cas barium ntxiv rau qhov muaj pes tsawg leeg?
Barium txo qhov vapor siab ntawm calcium thiab nce qib ntawm nws qhov nqus hauv cov hlau, thiab hauv cov hlau cam khwb cia - ua rau cov kev hloov kho qhov tsis kam ua rau cov nyhuv fading.
Q4. Puas yog SiBaCa tshem tawm phosphorus ntawm hlau?
Tsis muaj - nws lub luag haujlwm tseem ceeb yog deoxidation, desulfurization thiab kev hloov pauv ntawm kev suav nrog. Kev tshem tawm phosphorus yuav tsum tau tshem tawm ntawm lub ntsiab slag.
Tiv tauj peb
Koj puas xav tau cov khoom zoo silicon-barium-calcium modifier (SiBaCa) rau steelmaking lossis hlau foundry? Peb lub tuam txhab muab cov alloys complex nrog guaranteed cov ntsiab lus, tsawg tsawg plua plav tsim thiab siab nqus efficiency.
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Tiv tauj peb tam sim no kom thov Daim Ntawv Pov Thawj Zoo (COA) tam sim no, tau txais tus nqi kwv yees, lossis xaj ib pawg rau koj xav tau!