Taw qhia
Thaum cov neeg yuav khoom thov rau "tus qauv COA" rauFeSi 75%thiabFeSi 72%, lawv feem ntau txhais tau tias ib yam: dab tsi qhov tseem ceeb yuav tsum tshwm sim ntawm Daim Ntawv Pov Thawj Kev Tshawb Fawb, thiab dab tsi suav tias yog kev lag luam?
Tsis muaj ib qho qauv COA thoob ntiaj teb uas haum rau txhua lub tebchaws, vim tias cov qauv tuaj yeem sib txawv (GB, ASTM, ISO-txog kev coj ua, thiab kuj yog tus neeg yuav khoom- tshwj xeeb specs). Tseem, feem ntau export deals ua raws li tus qauv zoo nkauj:Si is the headline, thiabAl/C/P/Syog cov khoom "yuav tsum-show" ib txwm. Hauv qab no yog cov tswv yim, feem ntau siv siv.
Khoom Description
Q1: Dab tsi yog COA ib txwm rau FeSi75 thiab FeSi72 suav nrog?
Ib qho COA yog ib qho kev qhia ua haujlwm. Nws ib txwm muaj:
Khoom npe & qib(FeSi75 / FeSi72)
Batch/Lot Number
Test method los yog lab daim ntawv(qee zaum teev, qee zaum tsis)
Tshuaj muaj pes tsawg leeg(lub rooj tseem ceeb)
Hnub tim thiab tus neeg soj ntsuam/lab stamp(nyob ntawm tus neeg muag khoom)
Rau cov lus tshuaj, feem ntau cov neeg yuav khoom xav tau yam tsawg kawg nkaus:Si, Al, C, P, S. Qee tus neeg yuav khoom ntxiv thovMn, Ca, Ti, Cr(feem ntau xaiv tau tshwj tsis yog ib daim ntawv thov tshwj xeeb xav tau).
Q2: Dab tsi yog "kev ua lag luam ntau" qhia ntawm COA rau FeSi75?
Hauv ntau cov khoom xa tawm, FeSi75 tau tshaj tawm nrog cov silicon ntau yam xws li:
Si: Ntau dua lossis sib npaug li 75%(los yog feem ntau74–76%hauv kev xyaum)
Ces koj yuav pom impurity txwv. Hom "standard" kev cia siab ua lag luam feem ntau nyob ib puag ncig:
Al:Tsawg dua los yog sib npaug2.0%(feem ntau qis dua yog tias thov)
C:Tsawg dua los yog sib npaug0.2%(qee lub khw lees txais siab dua, tab sis ntau tus nyiam C tsawg)
P:Tsawg dua los yog sib npaug0.04%
S:Tsawg dua los yog sib npaug0.02%
Koj yuav pom qee yam: cov neeg yuav khoom tsis tshua saib xyuas yog Si yog 75.1 lossis 75.4. Qhov lawvuakev saib xyuas yog seb Al / P / S viav vias wildly los ntawm ntau rau ntau.
Q3: Dab tsi yog "kev ua lag luam ntau" qhia ntawm COAs rau FeSi72?
FeSi72 COA feem ntau qhia:
Si: Ntau dua lossis sib npaug li 72%(feem ntau72–73%ntawm tsab ntawv ceeb toom)
Cov khoom impurity zoo sib xws, tab sis qee zaum qhov kev lees paub yog qhov dav me ntsis nyob ntawm qhov deal:
Al:Tsawg dua los yog sib npaug2.0%(los yog tus neeg yuav khoom- qhia)
C:Tsawg dua los yog sib npaug0.2%
P:Tsawg dua los yog sib npaug0.04%
S:Tsawg dua los yog sib npaug0.02%
Hauv kev muaj tiag, ntau tus neeg yuav khoom txais FeSi72 vim nws yog kev lag luam. Tab sis yog tias lawv tab tom tsim cov hlau huv, lawv tseem yuav xav tau tib lub hom phiaj P / S qis li FeSi75.
Q4: Yog tias tsis muaj "tus qauv thoob ntiaj teb," yuav ua li cas cov neeg yuav khoom thov kom pom tseeb COA?
Ib txoj hauv kev zoo yog thov kom COA ua ib qhoformat + txwvpob. Piv txwv li:
"Thov qhia Si, Al, C, P, S ntawm txhua COA"
"Si yuav tsum loj dua lossis sib npaug rau 75% (lossis Ntau dua lossis sib npaug rau 72%)"
"P Tsawg dua lossis sib npaug rau 0.04%, S Tsawg dua lossis sib npaug rau 0.02%"
"Qhia Al txwv (1.5% lossis 2.0%) raws li peb cov txheej txheem"
Yog tias koj xav kom muaj kev nyab xeeb ntxiv, thov 2-3 COA tsis ntev los no los ntawm tus neeg muag khoom. Ib qho COA tuaj yeem saib zoo; Kev sib raug zoo thoob plaws ntau ntau yog qhov qhia qhov tseeb.
Q5: Dab tsi ntxiv cov khoom yuav tshwm sim ntawm COA rau kev siv nruj dua?
Rau siab dua- siv kawg (ntxuav steel, qee yam hlau alloy, qee zaum hluav taws xob steel txheej txheem), cov neeg yuav khoom tuaj yeem ntxiv:
Lower Al (xws liTsawg dua lossis sib npaug li 1.0%los yog nruj dua)
Cov ntsiab lus (Ti, Ca, Mn)
Qhov loj me me (tshwj xeeb yog tias yuav 1-5mm lossis 0-3mm)
Cov ntawv ntub dej / ntim ntawv (tsuas yog rau qhov loj me)
Cov no tsis yog "tus qauv," tab sis lawv yog ib qho kev hloov kho dua tshiab hauv - cov ntawv cog lus ntev ntev.
Hais txog peb cov khoom
Peb muabFeSi75 thiab FeSi72nrog ruaj khov muaj pes tsawg leeg thiab tsis tu ncua COA kev txhawb nqa rau kev xa khoom xa tuaj. Yog tias koj qhia peb txog koj daim ntawv thov (steelmaking, foundry, lossis ntau impurity{1}}sensitive ntau lawm), peb tuaj yeem qhia cov qauv COA tsis ntev los no, sib tham txog cov kev txwv tsis zoo, thiab qhia txog qhov loj me uas tsim nyog thiab. Yog tias koj tab tom muab kev sib piv, peb tuaj yeem muab tus nqi FOB tshiab los ntawm cov chaw nres nkoj loj hauv Suav.
