Hlau silicon hmoov yog hauv av metallurgical silicon siv los ua raw khoom hauv refractories, hmoov metallurgy, aluminium alloys thiab cov txheej txheem tshuaj. Nyob rau hauv refractory mixs nws ua raws li ib tug antioxidant thiab sintering pab; nyob rau hauv hmoov metallurgy nws yog ib qho khoom siv alloy; nyob rau hauv aluminium casting nws yog ib qho ntxiv silicon. Vim tias tib cov hmoov ua haujlwm ntau ntau, qhov loj me yog thawj qhov ntsuas tus neeg yuav khoom yuav tsum nkag siab.
Mesh Number piav txog Particle Loj npaum li cas
Mesh yog cov pa ua haujlwm rau kev soj ntsuam sieve ntawm hmoov. Ib tug xov tooj mesh yog suav ntawm sieve qhib rau ib tug linear nti ntawm lub vijtsam, qhov twg ib nti sib npaug 25.4 millimeters. Lub vijtsam 100-mesh yog li muaj 100 qhov qhib ib nti, thiab 40-mesh screen muaj 40 qhov qhib ib nti. Qhov loj mesh naj npawb, qhov qhib me me thiab qhov zoo dua cov hmoov uas hla nws; tus mesh naj npawb, lub coarser particle loj. Qhov loj me me ntsuas li no yog qhov loj ntawm lub sieve qhib uas cov khoom tuaj yeem dhau mus, tsis yog qhov ntev ntawm lub cev, yog li cov txiaj ntsig tau qhia raws li qhov loj me ntawm ob lub sieves.
Hloov ua lwm yam Mesh rau Micron
Mesh cov lej tuaj yeem hloov mus rau kwv yees qhov ntau thiab tsawg qhib hauv microns, txawm hais tias tus nqi tiag tiag nyob ntawm txoj kab uas hla ntawm lub sieve thiab tus qauv siv. Cov lus hauv qab no teev cov nqi nominal los ntawm ASTM E11 series, uas tau siv dav rau kev sib piv.
| Mesh | Nominal qhib, microns |
|---|---|
| 40 | 425 |
| 60 | 250 |
| 80 | 180 |
| 100 | 150 |
| 200 | 75 |
| 325 | 45 |
Cov no yog cov txiaj ntsig nominal rau kev sib piv. Cov hmoov uas tau teev tseg raws li 100 txog 325 mesh txhais tau hais tias cov khoom hla dhau 100-mesh sieve thiab khaws cia rau ntawm 325-mesh sieve, uas sib haum mus rau qhov loj ntawm kwv yees li 45 txog 150 microns.
Feem ntau Particle Size ranges thiab lawv siv
Hlau silicon hmoov feem ntau muab nkag rau hauv ntau yam xws li 40 mus rau 325 mesh, thiab ntau yam xaiv nyob ntawm tus txheej txheem:
Coarse hmoov nyob rau hauv 40 mus rau 100 mesh ntau yog siv nyob qhov twg ceev dissolution los yog siab packing ceev yog xav tau, piv txwv li ib tug additive nyob rau hauv ntom refractory castables.
Cov hmoov nruab nrab nyob rau hauv 100 mus rau 200 mesh ntau yog ib qho dav dav - lub hom phiaj loj rau refractory gunning mixes thiab ramming cov ntaub ntawv.
Cov hmoov zoo nyob rau hauv 200 mus rau 325 mesh ntau yog siv qhov chaw loj saum npoo yuav tsum tau, xws li hauv cov hmoov metallurgy blends thiab fine -grained refractory lub cev.
Yuav ua li cas Particle Size cuam tshuam cov txheej txheem kev ua tau zoo
Particle loj hloov peb lub zog uas tseem ceeb hauv kev tsim khoom. Ua ntej, packing: ib tug zoo- qhab nia sib xyaw ntawm ntxhib thiab zoo hais packs ntau densely tshaj ib tug loj loj, uas nce qhov ceev ntawm refractory lub cev thiab txo porosity. Qhov thib ob, reactivity: finer hmoov oxidizes thiab reacts sai dua vim hais tias nws deg cheeb tsam ntawm ib chav tsev loj dua, uas yog pab tau rau sintering pab tab sis yuav tsum tau saib xyuas nyob rau hauv cia thiab sib tov. Thib peb, sib xws: qhov nqaim me me faib ua rau cov txheej txheem ruaj khov dua, thaum kev faib khoom dav tuaj yeem ua rau muaj kev sib cais thaum thauj thiab tuav.
Yuav Ua Li Cas Qhia Metal Silicon Powder
Ib qho kev qhia meej meej yuav tsum hais txog qib thiab cov ntsiab lus ntawm silicon, qhov mesh ntau, qhov siab tshaj qhov loj thiab qhov qis qis, qhov txwv tsis pub muaj hlau, txhuas thiab calcium, txoj kev ntsuas particle loj, thiab chav ntim khoom. Rau cov ntawv thov tseem ceeb, cov neeg yuav khoom yuav tsum thov daim ntawv qhia txog kev soj ntsuam rau txhua qhov ntau thiab xyuas kom meej tias qhov ntsuas qhov sib txawv ntawm qhov kev txiav txim.
FAQ
Q1: 325 mesh txhais li cas rau hlau silicon hmoov?
Lub 325-mesh sieve muaj 325 qhov qhib rau ib nti, uas sib haum mus rau qhov qhib nominal txog 45 microns. Hmoov piav raws li 325 mesh tau dhau los ntawm lub sieve thiab yog li ntawd zoo heev.
Q2: Puas yog tus lej mesh ntau dua ib txwm zoo dua?
Yog lawm. Tus lej mesh suav qhov qhib ib nti ntawm lub vijtsam, yog li tus lej siab dua txhais tau tias qhov qhib me me thiab cov khoom zoo dua. Piv txwv li, 200 mesh yog finer tshaj 100 mesh.
Q3: Qhov mesh loj twg yog qhov zoo tshaj plaws rau refractory castables?
Tsis muaj ib lo lus teb, vim hais tias castables siv ib tug particle loj faib es tsis yog ib tug loj. Ib txoj hauv kev zoo sib xyaw ua ke sib xyaw ua ke nrog cov hmoov nruab nrab hauv 100 mus rau 200 mesh ntau thiab cov hmoov zoo xws li 325 mesh rau qib sib txuas.
Q4: Qhov luaj li cas ntawm cov hlau silicon hmoov kuaj tau li cas?
Sieve tsom xam yog tus qauv txheej txheem rau mesh ntau yam, siv ib pawg ntawm sieves los txiav txim qhov seem seem. Laser diffraction yog siv thaum muaj tag nrho qhov loj me me hauv qab qhov zoo tshaj plaws sieve xav tau.
Q5: Puas yog hlau hlau silicon hmoov raug nqi ntau dua?
Feem ntau yog. Kev sib tsoo rau qhov ntau thiab tsawg siv zog ntau dua thiab muab cov txiaj ntsig qis dua rau ib pawg, yog li tus nqi ib tuj nce ntxiv raws li tus lej mesh nce. Cov hmoov nplua nuj kuj oxidizes yooj yim dua thiab xav tau kev ntim ntau dua.