Dab tsi zoo specifications txhais cov qib sib txawv silicon hlau?

Silicon hlau, siab -purity metallurgical cov ntaub ntawv feem ntau muaj 98.5% mus rau 99.99% silicon, ua lub hauv paus raw khoom nyob rau hauv ntau yam kev lag luam sectors. Nws qhov tshwj xeeb ua ke ntawm cov khoom semiconductor, thermal stability, thiab alloying yam ntxwv ua rau nws indispensable rau niaj hnub manufacturing. Nkag siab txog cov ntawv thov tseem ceeb ntawmsilicon hlaumuab kev pom tseem ceeb rau nws lub luag haujlwm tseem ceeb hauv kev lag luam thoob ntiaj teb.

Qhov tseem ceeb tshaj qhov txawv ntawmsilicon hlaucov specifications zoo yog kev faib ntawm qib metallurgical thiab qib tshuaj. Ob pawg dav no ua haujlwm sib txawv hauv cov ntawv sau cia thiab yog li tswj hwm cov kev xav tau purity sib txawv.

Metallurgical qib silicon hlaufeem ntau muaj 98-99% silicon thiab feem ntau yog siv los ua ib qho ntxiv hauv aluminium alloys thiab tsim cov silicones . Qib no yog qhov tseem ceeb rau tus nqi-zoo thiab cov yam ntxwv ntawm kev ua haujlwm tshwj xeeb hauv cov hlau alloys tshaj qhov purity.

Chemical qib silicon hlauxav tau qib purity siab dua, feem ntau tshaj 99.5% silicon, thiab ua cov khoom siv raw rau kev tsim silicones, silanes, thiab thaum kawg semiconductor - qib silicon . Cov lus qhia nruj dua rau qib tshuaj muaj feem cuam tshuam txog nws lub luag haujlwm hauv kev sib xyaw tshuaj lom neeg uas tsis muaj paug tuaj yeem cuam tshuam rau txoj kev tshuaj tiv thaiv lossis cov khoom lag luam kawg.

Cov qauv kev lag luam xws li ASTM A922 muab cov lus qhia tshwj xeeb rau cov qib sib txawv ntawmsilicon hlau, piav qhia txog cov tshuaj muaj pes tsawg leeg uas cov neeg tsim khoom yuav tsum tau ua.

Ntau lub teb chaws tuav lawv tus kheej cov txheej txheem kev faib tawm rausilicon hlauqib. Tuam Tshoj tus qauv GB / T 2881, feem ntau tsis ntev los no tau hloov kho xyoo 2023, muab cov txheej txheem dav dav rau kev lag luamsilicon hlaukev faib tawm.

Raws li yav dhau los GB / T 2881-91 tus qauv,silicon hlautau muab faib ua tsib qib sib txawv raws li cov ntsiab lus ntawm silicon yam tsawg kawg nkaus thiab qhov siab tshaj plaws tso cai rau impurities:

• Qib A: Silicon content >99.3%, nrog qhov siab tshaj plaws impurities ntawm Fe Tsawg dua lossis sib npaug rau 0.4%, Al Tsawg dua lossis sib npaug rau 0.2%, Ca Tsawg dua lossis sib npaug rau 0.1%
• Qib B: Silicon content >99.0%, nrog qhov siab tshaj plaws impurities ntawm Fe Tsawg dua lossis sib npaug rau 0.5%, Al Tsawg dua lossis sib npaug rau 0.3%, Ca Tsawg dua lossis sib npaug rau 0.2%
• Qib 1: Silicon content >98.5%, nrog qhov siab tshaj plaws impurities ntawm Fe Tsawg dua lossis sib npaug li 0.6%, Ca Tsawg dua lossis sib npaug rau 0.3% (txhuas qhia tab sis tsis txwv)
• Qib 2: Silicon content >98.0%, nrog qhov siab tshaj plaws impurities ntawm Fe Tsawg dua lossis sib npaug rau 0.7%, Ca Tsawg dua lossis sib npaug rau 0.5% (txhuas qhia tab sis tsis txwv)
• Qib 3: Silicon content >97.0%, nrog qhov siab tshaj plaws impurities ntawm Fe Tsawg dua lossis sib npaug rau 1.0%, Ca Tsawg dua lossis sib npaug rau 1.0% (txhuas qhia tab sis tsis txwv)

Qhov tseem ceeb, cov lus qhia tshwj xeeb txhais cov ntsiab lus silicon tsis ncaj - xam raws li 100% rho tawm cov lej ntawm cov hlau, txhuas, thiab calcium impurities -xav txog kev lag luam kev ua haujlwm ntawm kev tsom mus rau cov ntsiab lus tsis huv.

Tshaj li cov qauv kev cai, lubsilicon hlaukev lag luam feem ntau siv ib qho intuitive shorthand designation system uas peb tus lej sawv cev rau qib siab tshaj plaws impurity. Raws li kev xyaum ua lag luam,silicon hlauCov qib xws li 553, 441, 411, 421, thiab 3303 tau lees paub dav hauv kev lag luam thoob ntiaj teb.

Hauv qhov system no:

• qib 553: Feem ntau qhia tias Fe Tsawg dua lossis sib npaug rau 0.5%, Al Tsawg dua lossis sib npaug rau 0.5%, Ca Less dua lossis sib npaug rau 0.3%
• qib 441: Feem ntau qhia tias Fe Tsawg dua lossis sib npaug rau 0.4%, Al Tsawg dua lossis sib npaug rau 0.4%, Ca Less dua lossis sib npaug rau 0.1%
• 421 qib: Feem ntau qhia tias Fe Tsawg dua lossis sib npaug rau 0.4%, Al Tsawg dua lossis sib npaug rau 0.2%, Ca Less dua lossis sib npaug rau 0.1%
• qib 3303: Feem ntau qhia tias Fe Tsawg dua lossis sib npaug rau 0.3%, Al Tsawg dua lossis sib npaug rau 0.3%, Ca Less dua lossis sib npaug rau 0.03%

Cov npe no muab kev pom tam sim rau hauv qhov purity profile ntawm qhov muabsilicon hlauntau thiab tso cai rau cov neeg yuav khoom sai sai phim cov khoom siv rau cov ntawv thov. Rau aluminium alloy ntau lawm, qhov twgsilicon hlauua hauj lwm raws li ib tug hardening additive, qib nrog me ntsis siab impurity tolerances yuav tau txais. Rau kev siv tshuaj, cov ntsiab lus nruj dua yog qhov tseem ceeb.

Qhov zoo specifications rausilicon hlauCov qib tsom mus rau ib qho ntawm cov ntsiab lus tseem ceeb ntawm impurity uas feem ntau cuam tshuam rau kev ua haujlwm. ASTM txoj kev xeem E360 qhia txog cov txheej txheem tshuaj ntsuam xyuas kom paub tseeb cov ntsiab lus no.

Hlau (Fe)yog yuav luag ib txwm tshaj impurity tshaj nyob rau hauvsilicon hlau. Nyob ntawm qib, cov ntsiab lus hlau siab tshaj plaws yuav nyob ntawm 0.3% txog 1.0%. Hauv kev siv aluminium alloying, cov ntsiab lus hlau yuav tsum tau tswj raws li nws tuaj yeem tsim cov nkig intermetallic tebchaw uas txo cov ductility.

Aluminium (Al)ua hauj lwm ob qho tib si raws li ib tug impurity thiab, nyob rau hauv ib co ntsiab lus, ib tug ntshaw alloying caij thaum lubsilicon hlauyog destined rau aluminium ntau lawm. Cov qib hwm txwv tsis pub txhuas rau 0.2% lossis tsawg dua.

Calcium (Ca)tau txais kev saib xyuas tshwj xeeb vim nws cuam tshuam rau kev tsim slag thaum lub sij hawm melting thiab tuaj yeem cuam tshuam cov reactivity ntawmsilicon hlauhauv kev siv tshuaj lom neeg. Ultra- qib ntshiab yuav qhia tau cov calcium hauv qab 0.03%.

Cov ntsiab lus ntxiv nrog rau titanium, phosphorus, carbon, thiab sulfur tej zaum yuav raug teev tseg rau qee yam kev siv, nrog rau cov kev sim muaj los xyuas qhov ua raws.

Quality specifications rausilicon hlauTxuas ntxiv tshaj cov tshuaj muaj pes tsawg leeg kom suav nrog cov yam ntxwv ntawm lub cev uas cuam tshuam rau kev tuav, melting, thiab kawg - siv kev ua haujlwm.

Particle loj faibyog qhov tseem ceeb ntawm qhov zoo. Raws li GB / T 2881, tus qauvsilicon hlauyog teev nyob rau ntawm 6-200mm, nrog rau tag nrho cov undersize thiab oversize khoom tsis pub tshaj 10%. Cov ntawv thov sib txawv yuav xav tau kev hloov kho qhov loj me-piv txwv li, cov ntawv thov kev tshawb fawb feem ntau nyiam qhov tshwj xeeb qhov loj me los ua kom zoo dua cov nqi tawg thiab txo qis oxidation poob.

Cov kev xav tau tshwm simmandate tiassilicon hlaunto thiab pob txha pob txha yuav huv si, tsis muaj adhering slag, av, hmoov silicon, los yog lwm yam txawv teb chaws ntaub ntawv qhia thaum lub sij hawm tsim khoom. Qhov kev qhia tshwj xeeb no ua kom ntseeg tau tias cov khoom xa tuaj cuam tshuam rau kev tshuaj xyuas tshuaj thiab ua kom pom tseeb hauv cov txheej txheem qis.

Qhov zoo specifications uas txhais txawvsilicon hlauCov qhab nia suav nrog cov tshuaj purity, txwv impurity, cov yam ntxwv ntawm lub cev, thiab ua raws li cov qauv lees paub. Txawm hais tias tau muab cais raws li cov qauv hauv tebchaws xws li GB / T 2881, cov kev qhia tshwj xeeb thoob ntiaj teb zoo li ASTM A922, lossis cov qauv kev lag luam xws li 553 thiab 441, cov kev ntsuas no xyuas kom meej tiassilicon hlauCov neeg yuav khoom tau txais cov khoom tsim nyog rau lawv cov ntawv thov tshwj xeeb- txawm tias ntxiv dag zog rau cov khoom siv txhuas, ua cov khoom noj rau cov khoom siv silicone, lossis ua kom muaj kev tsim khoom semiconductor. Kev nkag siab txog cov kev qhia tshwj xeeb no ua rau muaj kev paub txog kev yuav khoom txiav txim siab thiab kev siv tau zoo ntawm cov khoom siv no ntau yam.