Aluminium foam yekugadzirira nzira

Nekuda kwemaitiro akasiyana ekugadzirira, furo realuminium rinogona kuiswa muakavharwa-sero aluminium foam, semi-.yakavharwa-sero aluminium foam, uye yakavhurika-sero aluminium furo zvichienderana nekuti maburi akabatanidzwa sei. Nzira dzekugadzirira dzealuminium furo dzinogona kuiswa muzvikamu zvitatu: chikamu chemvura, chikamu chakasimba, uye deposition.

(1) Mvura yechikamu nzira

Iyo yemvura-chikamu nzira ndiyo yakatokura kugadzirira nzira yealuminium furo, ine yakafara yekutsvagisa uye tarisiro yekushandisa, kunyanya kusanganisira gasi kuvhuvhuta musimbi yemvura nzira, simbi yemvura inovhuvhuta agent nzira, mari yekukanda nzira, uye seepage casting nzira.

Gasi kuvhuvhuta kupinda simbi mvura nzira: mu yakanyungudutswa simbi aruminiyamu kunyunguduka kuwedzera thickener zvimedu, kuvandudza viscosity kunyunguduka, anowanzoshandiswa thickeners ane nesilicon carbide, alumina magnesium oxide, etc. Zvadaro, kune yakanyungudutswa simbi mumhepo, nitrogen. , hydrogen, kana musanganiswa wemagasi aya, uye achigara achibvongodza, simbi yakanyunguduka inogona kuwanikwa mushure mekutonhodza porosity ye. 80% ~ 97.5% yefoam aluminium, sezvinoratidzwa mumufananidzo 1.

Fig.1 Macromorphology yealuminium foam yakagadzirirwa negasi jekiseni nzira

(2) Metal liquid inofefetera agent nzira: kune yakanyungudutswa aluminium inonyunguduka wedzera inofuridza, nekupisa iyo inofefetera mumiriri wekuparara mukuburitswa kwegasi, gasi rinowedzera kupisa kwesimbi yakanyungudutswa kuita furo, mushure mekutonhora kunogona kuwanikwa 91% ~ 93 % ye porosity yefoam aluminium. Foaming agent inoshandiswa mukugadzirwa kwealuminium foamTiH2, ZrH2, uye CaH2, zvichingodaro.

(3) Yakanyungudutswa mold yekukanda nzira: kushandiswa kwemvura inodzivirira zvinhu kuzadza pores mune spongy furo, kuomeswa zvinhu zvinodzivirira, kupisa kugadzira epurasitiki gasification uye kuwana spongy pore chimiro chekukanda, iyo yakanyungudutswa aluminium yakadururirwa mukati. uku kukandira, kutonhorera uye kusimba kubvisa zvinhu zvinoramba, zvinogona kuwanikwa porosity ye80% ~ 97% yefuro. aluminium.

(4) Seepage casting nzira: yakakwira-tembiricha yemvura aluminium pasi peimwe kumanikidzwa kupinda mukati megeji rekuzadza kuti uwane iyo simbi yekuzadza simbi inoumbwa, wobva washandisa kunyudza kana ultrasonic vibration nedzimwe nzira kubvisa iyo filler, kuti uwane iyo porosity ye70% kana zvakadarofoam aluminium. Anowanzo shandiswa mafirita ari soluble munyu, isinganyunguke porous ceramic balls, hollow corundum balls, foam carbon, zvichingodaro. Iyi nzira inogona kupatsanurwa mumhando mbiri: iyo up-pressure percolation casting nzira uye yakaipa yekumanikidza percolation yekukanda nzira.

2. Solid chikamu nzira

(1) Powder metallurgy nzira: Iyo poda metallurgy nzira ndeyekusanganisa aluminium poda neinofuridza (inowanzo shandiswa TiH2) mune imwe chikamu, kugadzirira pre-germ muviri pasi pekumanikidzwa kwakakodzera, uyezve yakatsikirirwa pre-yakagadzirwa yakawedzera kugadziridzwa, senge kukunguruka, kuforoma, nezvimwewo, uyezve ichi chigadzirwa chehafu-chakapedzwa chinoiswa mune inodiwa simbi mold, inopisa kune imwe tembiricha kuitira kuti iyo inofuridza. inoora kuita mabubbles uye kuwana foam aluminium. Iyi nzira yakanyanya kuomarara, asi mhando yechigadzirwa yakakwira uye kuita kwayo kwakagadzikana, nekudaro inokura nekukurumidza, asi nzira iyi haigone kugadzirwa nguva dzose nekuda kwekudhura kwezvinhu.

(2) Powder impregnation slurry nzira: gadzirisa imwe viscosity yealuminium poda slurry, iyo porous polymer foam zvinhu inonyudzwa mune iyi slurry, hupfu hunoiswa mumadziro epore ye polymer furo zvinhu, uye ipapo kuomesa kurapwa, kupisa kuitira kuti. Kuora kwemafuta epolymer foam zvinhu, spongy zvinhu mukuora maitiro kuita basa rekutsigira kwenguva pfupi, uye pakupedzisira aluminium poda inoputirwa pamwechete, yozotonhodzwa kuti iwane porosity ye70% kusvika 90% ye Aluminium foam.

(3) Wedzera bhora zvinhu nzira: wedzera bhora zvinhu kana buri bhora muaruminiyamu kunyunguduka uye fambisa, kuitira kuti bhora zvinhu zvigovane zvakafanana mualuminium inyauka; ramba uchimutsa uye kutonhora kusvika kune viscosity yakakwana, uye jekiseni modhi kuti uwane simbi-bhora zvinhu zvinoumbwa. Kana iyo yakawedzerwa bhora zvinhu chinhu chinonyungudika, nzira yekunyudza yekugeza inogona kushandiswa kunyungudutsa bhora zvinhu, kuwana kuburikidza-gomba-mhando foam aluminium.

3. electrodeposition nzira

Furo nemaitiro ekuitisa senge cathode zvinhu, maindasitiri akachena aluminium ndiro yeanode zvinhu, mualkyl aluminium solution plating, kuitira kuti aluminium inoiswa pamusoro pefuro, mushure mekuoma pane imwe tembiricha inonyungudika, kuparara kwekupisa kweiyo. furo,aluminium foam. Iyi nzira yakaoma uye inoda kugadzirisa zvinoshanduka, asi chimiro chefuro chinonyanya kufanana. Chimiro chealuminium foam chakagadzirirwa ne electrodeposition nzira inoratidzwa muMufananidzo 2.

Fig. 2 Macromorphology yealuminium foam yakagadzirwa ne electrodeposition