Dab tsi yog ob pawg tseem ceeb ntawm atomization hmoov ntau lawm txoj kev?
Tso lus
Atomization hmoov ntau lawm yog ib txoj kev npaj hmoov uas siv cov kua dej nrawm nrawm (atomizing nruab nrab) los cuam tshuam los yog ua rau cov kua hlau los yog cov hlau tsis zoo rau hauv cov tee dej, uas tom qab ntawd condense rau hauv cov hmoov. Atomization hmoov ntau lawm txoj kev yog dav faib ua ob pawg: "ob- ntws txoj kev" (siv ib qho nruab nrab atomizing los rhuav tshem cov molten alloy txaus) thiab "ib qho- txoj kev ntws" (siv lwm txoj kev los rhuav tshem cov molten alloy flow). Cov qub siv cov roj (helium, uranium, nitrogen, cua) lossis kua (dej, roj) atomizing nruab nrab; Cov tom kawg suav nrog centrifugal atomization thiab yaj lub tshuab nqus tsev atomization.
Daim ntaub ntawv: Gas atomization thiab dej atomization txoj kev yog dav siv. Hauv kev tsim cov hmoov atomization, cov khoom siv hlau yog thawj zaug melted rau hauv cov kua hlau uas tsim nyog (feem ntau superheated rau 100-}150 degree) siv lub tshuab hluav taws xob lossis lub qhov cub induction. Cov kua no ces txhaj rau hauv ib qho tundish nyob saum lub atomizing nozzle. Cov kua hlau alloy ntws tawm los ntawm cov xau hauv qab ntawm tundish, ntsib cov pa roj nrawm lossis dej ntws thaum nws hla lub nozzle thiab yog atomized rau hauv cov dej zoo. Cov tee dej no tau nrawm nrawm rau hauv cov hmoov txhuas hauv lub tog raj kheej kaw atomization.
Nqus Atomization Powder Cov Khoom Siv Khoom Siv rau Hlau Hmoov
Feem ntau, cov roj inert atomized hmoov yog kheej kheej nrog cov ntsiab lus qis tshaj plaws (hauv qab 100 × 10⁻⁶), thiab tuaj yeem tsim ncaj qha rau hauv cov khoom ntom ntom siv cov txheej txheem thermoforming (xws li kub isostatic nias). Cov dej atomized hmoov feem ntau tsis sib xws nrog cov ntsiab lus oxygen siab (siab dua 600 × 10⁻⁶), yuav tsum tau kho annealing. Txawm li cas los xij, lawv muaj compressibility zoo heev thiab tuaj yeem txias - nias thiab ces sintered rau hauv cov khoom siv tshuab. Cov txheej txheem kev tsim cov hmoov atomization saum toj no yog ib qho yooj yim rau loj- nplai kev lag luam ntau lawm, tab sis vim tias cov molten alloy los rau hauv kev sib cuag nrog cov slag thiab refractory crucible, tsis yog -hlau inclusions yog inevitably nkag mus rau hauv lub resulting hmoov.
Yog li ntawd, raws li lub hauv paus ntsiab lus ntawm electroslag remelting (ESR), Swedish Soderfors hmoov tuam txhab thawj zaug hloov 7t tundish mus rau ib tug electroslag cua sov (ESH) ntaus ntawv, txo tus nqi ntawm cov non-hlau inclusions nyob rau hauv nitrogen- atomized siab- ceev steel hmoov mus rau 1/10, los ntawm qhov ntawd nce tus nqi qub. dabtsi yog khoov lub zog ntawm ASP hmoov siab -ceev steel los ntawm 3500MPa rau tshaj 4000MPa.
