Karfe foda atomization comminuting tsari

Hanyar shirya foda ta hanyar tarwatsa ko akasin haka karya karfe ko gabobin ruwa zuwa kananan ɗigon ruwa ta ruwa mai sauri (matsakaicin atomizing) sa'an nan kuma sanya su cikin ƙaƙƙarfan foda. Atomization ita ce hanya mafi kyau don samar da cikakkiyar foda, wanda ake kira pre-alloyed foda. Kowace barbashi na foda ba wai kawai yana da kayan sunadarai ba kamar yadda na wani abu ne mai kyau, amma kuma yana ba da tsarin haddi na na biyu.

Ana iya raba hanyar atomization zuwa nau'i biyu: "Hanya mai gudana biyu" (hanyar da ruwa mai gudana ta hanyar atomizing matsakaicin kwarara) da "Hanya mai gudana guda ɗaya" (hanyar da ruwa mai gudana ta wasu hanyoyi) . 846 na farko ya kasu kashi gas (helium, hazo, nitrogen, iska) da ruwa (ruwa, mai) atomization matsakaici, na karshen kamar centrifugal atomization da narkar da gas vacuum atomization.

Hanyoyin da aka fi amfani da su sun hada da atomization gas da atomization na ruwa. A cikin tsarin atomization, ɗanyen ƙarfe yana narkar da shi a cikin wani ingantaccen ruwa mai ƙarfi (mai zafi sama da 100 ~ 150 ° C) a cikin tanderun lantarki ko induction, sannan a yi masa allura a cikin tundish da ke sama da bututun atomization. Ruwan gwal yana fitowa daga rami na ƙasa na Tundish, kuma ana sanya shi cikin ƙananan ɗigon ruwa lokacin da ya hadu da iska mai sauri ko ruwa ta cikin bututun ƙarfe. Gabaɗaya, inert gas atomized foda barbashi suna zagaye a siffar tare da mafi ƙasƙanci abun ciki na oxygen (a kasa L00 × 10) kuma za a iya sanya su cikin densified kayayyakin kai tsaye ta thermoforming dabaru kamar zafi isostatic latsa. Yawancin barbashin foda na ruwa suna da siffar da ba ta dace ba, babban abun ciki na oxygen (sama da 600 × 10) kuma suna buƙatar annealed, amma suna da matsawa mai kyau kuma ana iya samun su ta hanyar latsa sanyi sannan a shiga cikin sassa na inji.

Hanyar atomization da aka ambata a sama yana da sauƙi don zama masana'antu a cikin adadi mai yawa, amma saboda ruwan gawa yana cikin hulɗa tare da slag da Refractory crucible, babu makawa cewa an shigar da abubuwan da ba na ƙarfe ba a cikin sakamakon foda. Saboda haka, bisa ga ka'idar ESR, Kamfanin Soderfors Powder Company na Sweden ya fara canza Tundish tare da damar 7 T a cikin na'urar ESR (electroslag dumama), abun ciki na abubuwan da ba na ƙarfe ba a cikin foda na ƙarfe mai sauri ta hanyar nitrogen atomization an rage zuwa 1/10 na ainihin abun ciki, kuma ƙarfin lanƙwasawa na ASP foda babban gudun karfe ya karu daga 350 MP000a

Ma'auni don guje wa gurɓacewar oxide gabaɗaya kuma yadda ya kamata shine ɗaukar hanyar atomization “Single-flow”, alal misali, hanyar atomization electrode (duba hanyar juyawa) . Bugu da ƙari, akwai hanyar atomization mafita kuma iya samar da high-tsarki mai siffar zobe foda. Ka'idar ita ce: lokacin da gas supersaturated gami ruwa a karkashin matsa lamba ba zato ba tsammani fallasa ga injin, narkar da gas zai tsere da kuma fadada, haifar da gami ruwa atomization, sa'an nan kuma condensed cikin foda. Don nickel, jan karfe, cobalt, baƙin ƙarfe da aluminum matrix gami, hanyar narkar da hydrogen za a iya amfani da su cimma injin narkar da iskar gas atomization foda.