Kev txiav txim siab seb puas rov ua dua magnesium oxide ua tau raws li cov qauv yuav tsum tau ua pov thawj peb zaug ntawm cov tshuaj muaj pes tsawg leeg, cov qauv ntawm lub cev, thiab cov khoom hluav taws xob. Txoj hauv kev tseem ceeb yog ua raws li HG/T 3928-2012 tus qauv, nrog rau thib peb-kev xeem CNAS thiab kev sim ntawm qhov chaw rau kev ntsuam xyuas dav.
1. Chemical Composition Testing (Authoritative Judgment Basis) Cov qauv yuav tsum raug xa mus rau CNAS-cov ntaub ntawv pov thawj rau kev tshuaj xyuas tshuaj. Cov khoom xeem thiab cov qauv tsim nyog yog raws li hauv qab no:
Kev Xeem Yam Txuj Ci Txuj Ci Kev Xeem Txuj Ci
MgO Cov ntsiab lus Ntau dua lossis sib npaug rau 95% Acid-Base Titration
Active Magnesium Oxide Ntau dua los yog sib npaug rau 60% Hydration Method
Hydrochloric Acid Insoluble Matter Tsawg dua los yog sib npaug rau 0.5% Pom thiab Ntsuas Txoj Kev
Cl⁻ Tsawg dua lossis sib npaug rau 0.02% Nyiaj Nitrate Titration Method
SO₄²⁻ Tsawg dua lossis sib npaug rau 0.1% Barium Sulfate Turbidity Method
Poob ntawm Ignition Tsawg dua los yog sib npaug rau 5% 950℃Txoj Kev Nyuaj Siab
Cov Tsev Kawm Ntawv Pom Zoo: Zhongxi Testing, Wuhan Kehai Inspection Co., Ltd. Cov ntawv ceeb toom yuav tsum dais CMA / CNAS cim thiab muaj kev cai lij choj.
2. Kev txheeb xyuas lub cev thiab cov qauv (Critical to process control)
Yam Khoom Txais Cov Txheej Txheem Kev Tshawb Fawb
Filling Density 2.8–3.2 g / cm³ Kev ntsuas qhov tseeb tom qab vibration thiab compaction
Grain Recrystallization Grain loj hlob, thaj tsam ntshiab, ntom qauv Metallographic Analysis (Gold Standard)
Internal Structural Integrity Tsis muaj voids, tawm -center cores, los yog tsis sib xws qhov ceev X-ray soj ntsuam (kev daws teeb meem ntau dua los yog sib npaug rau 5μm)
Metallographic tsom xam yog cov txheej txheem tseem ceeb rau kev txiav txim siab seb sintering puas ua tiav, ncaj qha cuam tshuam txog lub xeev sab hauv ntawm cov khoom.
3. Kev kuaj xyuas hluav taws xob thiab sealing kev ua tau zoo (Kev ua haujlwm ruaj khov)
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Cov khoom kuaj |
Txais Cov Qauv |
Kev kuaj mob |
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Txias rwb thaiv tsev Resistance |
Ntau dua lossis sib npaug li 500 MΩ |
500V DC, RH Tsawg dua lossis sib npaug li 30% |
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Kub rwb thaiv tsev Resistance |
Ntau dua lossis sib npaug li 200 MΩ |
Ntsuas hauv 2 vib nas this ntawm lub zog tsis ua haujlwm tom qab 30 feeb ntawm kev ua haujlwm |
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Withstand voltage kev ua tau zoo |
AC 2000V, tsis tawg tom qab 1 feeb |
Ib puag ncig ib puag ncig |
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Huab cua nruj |
Tsis muaj dej xau tom qab 30 feeb ntawm 0.3MPa kev ntsuas siab |
Kev ntsuas dej hauv qab dej |
Kev ntsuas kub yog qhov tseem ceeb, vim nws tuaj yeem txheeb xyuas qhov tsis xws luag xws li "dhau txias tab sis tsis kub."
Txheej txheem txiav txim siab
Ua ntej, ua X-ray thiab density ntsuam xyuas → tsis suav nrog cov qauv tsis zoo;
Tom qab ntawd, ua metallographic tsom xam → paub meej tias cov nplej recrystallization;
Thaum kawg, xa mus rau kev kuaj tshuaj muaj pes tsawg leeg + ua tiav kev ntsuas hluav taws xob → daim ntawv kaw - lub voj pov thawj.
Nws raug nquahu kom coj mus kuaj yam tsawg kawg 3 daim los ntawm txhua pawg, tsim kom muaj cov ntaub ntawv tshwj xeeb coded, thiab ua tiav tag nrho lub neej traceability.
