Hanyar shirya kumfa aluminum

Saboda tsarin shirye-shirye daban-daban, ana iya rarraba kumfa aluminium zuwa kumfa mai rufaffiyar kwayar halitta, Semi-rufaffiyar-cell aluminum kumfa, da buɗaɗɗen kumfa aluminum dangane da yadda aka haɗa ramukan. Hanyoyin shirye-shiryen na kumfa aluminum za a iya rarraba su cikin nau'i uku: lokaci na ruwa, lokaci mai ƙarfi, da ajiya.

(1) Hanyar lokaci mai ruwa

Hanyar ruwa-lokaci ita ce mafi balagagge hanyar shiri na kumfa aluminum, tare da faffadan yuwuwar bincike da buƙatun aikace-aikace, galibi gami da hura iskar gas a cikin hanyar ruwa ta ƙarfe, hanyar busa ruwa ta ƙarfe, hanyar simintin saka hannun jari, da hanyar simintin simintin.

Gas hurawa cikin karfe ruwa hanya: a cikin narkakkar karfe aluminum narke ƙara thickener barbashi, don inganta danko na narkewa, fiye amfani thickeners da silicon carbide, alumina magnesium oxide, da dai sauransu Daga baya, zuwa narkakkar karfe a cikin iska, nitrogen. , hydrogen, ko cakuda wadannan gas, kuma kullum stirring, da narkakkar karfe za a iya samu bayan sanyaya da porosity na 80% ~ 97.5% na kumfa aluminum, kamar yadda aka nuna a Figure 1.

Fig.1 Macromorphology na aluminum kumfa wanda aka shirya ta hanyar allurar gas

(2) Metal ruwa mai hurawa hanyar wakili: zuwa narkakken aluminum narke ƙara wakili mai busawa, ta hanyar dumama busa wakili a cikin sakin iskar gas, haɓakar iskar gas na narkakken ƙarfe a cikin kumfa, bayan sanyaya ana iya samun 91% ~ 93 % na porosity na kumfa aluminum. Wakilin kumfa da aka yi amfani da shi wajen samar daaluminum kumfaTiH2, ZrH2, da CaH2, da sauransu.

(3) Hanyar simintin gyare-gyaren gyare-gyare: yin amfani da kayan da aka yi amfani da ruwa don cika pores a cikin kumfa mai kumfa, da za a taurare kayan aiki, dumama don yin gas ɗin filastik da samun tsarin spongy pore na simintin gyare-gyaren, narkakken aluminum ya zuba a ciki. wannan simintin gyare-gyaren, sanyaya da kuma ƙarfafa don cire kayan da aka gyara, ana iya samun porosity na 80% ~ 97% na kumfa aluminum.

(4) Hanyar simintin simintin simintin gyare-gyare: babban zafin jiki na ruwa aluminum a ƙarƙashin wani matsi na matsa lamba a cikin ratar filler don samun hadaddiyar giyar filler, sannan yi amfani da nutsewa ko girgizawar ultrasonic da sauran hanyoyin cire filler, don samun porosity na 70% ko makamancin hakakumfa aluminum. Filayen da aka fi amfani da su sune gishiri mai narkewa, ƙwallan yumbu maras iya narkewa, ƙwallan corundum mara kyau, carbon kumfa, da sauransu. Ana iya raba wannan hanya zuwa nau'i biyu: Hanyar simintin ƙwanƙwasa matsa lamba da kuma hanyar jefar da matsi mara kyau.

2. Hanyar lokaci mai ƙarfi

(1) Hanyar ƙarfe na foda: Hanyar ƙarfe ta foda ita ce haxa foda aluminium tare da wakili mai busawa (TiH2 da aka saba amfani da shi) a cikin wani nau'i, shirya jikin pre-germ a ƙarƙashin matsin da ya dace, sa'an nan kuma jikin da aka riga aka yi shi da shi. ana kara sarrafa su, kamar jujjuyawa, ƙirƙira, da sauransu, sannan wannan samfurin da aka gama gamawa ana saka shi a cikin ƙirar ƙarfe da ake buƙata, mai zafi zuwa wani zafin jiki ta yadda mai busawa. bazuwa don samar da kumfa da samun kumfa aluminum. Wannan hanya ta fi rikitarwa, amma ingancin samfurin ya fi girma kuma aikin yana da kwanciyar hankali, saboda haka yana tasowa da sauri, amma wannan hanya ba za a iya ci gaba da samar da shi ba saboda yawan farashin albarkatun kasa.

(2) Foda impregnation slurry Hanyar: saita wani danko na aluminum foda slurry, da porous polymer kumfa abu ne immersed a cikin wannan slurry, da foda aka ajiye a cikin pore bango na polymer kumfa abu, sa'an nan bushewa magani, dumama sabõda haka, thermal bazuwar na polymer kumfa abu, spongy abu a cikin bazuwar tsari don taka wani wucin gadi goyon baya rawa, kuma a karshe da aluminum foda ne sintered. tare, sa'an nan kuma sanyaya don samun porosity na 70% zuwa 90% na Aluminum kumfa.

(3) Ƙara hanyar kayan ƙwallon ƙwallon ƙwallon ƙafa: ƙara kayan ball ko ball ball a cikin narke aluminum da motsawa, don haka an rarraba kayan ƙwallon daidai a cikin narke aluminum; ci gaba da motsawa da kwantar da hankali zuwa isasshen danko, kuma allurar samfurin don samun kayan haɗin ƙarfe-ball. Lokacin da ƙarin kayan ƙwallon ƙwallon abu ne mai narkewa, ana iya amfani da hanyar wankewar nutsewa don narkar da kayan ƙwallon, don samun nau'in kumfa na aluminum.

3. Hanyar daidaitawa

Kumfa da conductive tsari kamar yadda cathode abu, masana'antu tsarki aluminum farantin ga anode abu, a cikin alkyl aluminum bayani plating, sabõda haka, da aluminum ajiya a saman da kumfa, bayan bushewa a wani zafin jiki sintering, thermal bazuwar na kumfa,aluminum kumfa. Wannan hanyar tana da rikitarwa kuma tana buƙatar daidaita masu canji, amma tsarin kumfa ya fi daidai. Tsarin kumfa aluminum da aka shirya ta hanyar hanyar electrodeposition yana nunawa a cikin hoto 2.

Hoto 2 Macromorphology na kumfa aluminum wanda aka shirya ta hanyar lantarki