Ezweni lokukhiqiza ngokunemba, ubuqotho bezingxenye zensimbi bubaluleke kakhulu. Ngisho nezingxenye eziklanywe ngobunyoninco, ikakhulukazi lezo ezenziwe nge-die-casting noma i-powder metallurgy, zingaba nenkinga efihliwe: i-micro-porosity. Lezi zimbotshana ezincane kanye nemifantu ngaphakathi kwento esebenzayo kungaholela ekwehlulekeni okuyinhlekelele, kubangele ukuvuza ngaphansi kwengcindezi, konakalise ukuqedwa kwendawo, futhi kubeke engcupheni amandla esakhiwo. Yilapho ukufakwa kwe-vacuum kuvela khona njengesixazululo esibucayi nesiyinkimbinkimbi sokuvala.
Emgogodleni wayo, i-vacuum impregnation iyinqubo eqinile enezigaba ezintathu eklanyelwe ukuqeda unomphela i-porosity. Isigaba sokuqala sihilela ukubeka izingxenye ekamelweni lokungena elivaliwe. Iphampu yevacuum enamandla ibe isikhipha wonke umoya egumbini, ngesikhathi esifanayo idonsa umoya ovaleleke phakathi kwezimbotshana zengxenye. Lesi sinyathelo esibalulekile sidala isikhala, esilungele ukuvaleka.
Isigaba sesibili siqala ngokwethulwa kwe-special sealant liquid, noma i-impregnation resin, ekamelweni ngenkathi i-vacuum igcinwa. Umehluko obalulekile wengcindezi phakathi kwevacuum ngaphakathi kwezimbotshana nomoya ongaphezulu koketshezi uphoqa inhlaka ijule kuyo yonke indlela yokuvuza okuncane, iqinisekisa ukungena okuphelele. Ekugcineni, i-vacuum iyakhululwa, futhi izingxenye ziyahlanzwa. Inqubo yokwelapha, ngokuvamile ngokushisa, bese iqinisa unomphela inhlaka engaphakathi kwezimbotshana, idale uphawu oluqinile, olungavuzi.
Ukusetshenziswa kwalobu buchwepheshe kukhulu futhi kubucayi. Embonini yezimoto kanye ne-aerospace, ivala amabhulokhi enjini, izindlu zokuthuthwa kwamanzi, kanye nama-hydraulic manifolds, iqinisekisa ukuthi angakwazi ukumelana nokucindezela okuphezulu ngaphandle kokuvuza uketshezi. Ngaphezu kwalokho, kuyisidingo sokuqedwa kwekhwalithi ephezulu. Ngaphandle kokukhulelwa, uketshezi oluvela ezinqubweni zokucwenga noma zokudweba lungabanjwa kuma-pores, kamuva lukhule futhi lubangele amabhamuza noma "ama-pops acwebileyo." Ngokuvala i-substrate, abakhiqizi bathola ukunamathela okungenasici, okuqinile emikhiqizweni yabathengi efana nompompi nezindlu zemishini kagesi.
Isici esibalulekile, esingaxoxiswana ngaso sokusebenzisa isistimu yokufakwa kwe-vacuum ukufakwa kokuhlunga okufanele. Lokhu kuyisidingo esikabili. Okokuqala, i-resin impregnation ngokwayo kufanele igcinwe ihlanzekile ngokungenasici. Ukungcola kwezinhlayiyana kungavala izimbotshana inqubo ehlose ukuyigcwalisa. Ngakho-ke, izihlungi ezisemgqeni, ngokuvamile zisebenzisa amakhatriji okuhlunga e-polypropylene anezilinganiso eziphakathi kwama-microns angu-1 kuya kwangu-25, afakwa ku-resin circulation loop ukuze asuse noma yimaphi ama-gel noma izinhlayiya zangaphandle.
Okwesibili, futhi okubaluleke kakhulu, ukuvikelwa kwepompo ye-vacuum. Imvelo yevacuum ingadonsa izincibilikisi eziguquguqukayo kusuka ku-resin noma ibangele amaconsi amancane oketshezi ukuthi abe aerosoli. Ngaphandle kokufaneleisihlungi sokungena, lezi zinto ezingcolile zizomuncwa ngokuqondile ohlelweni lukawoyela wephampu. Lokhu kuholela emulsification kawoyela ngokushesha, ukuwohloka, kanye nokuguga kwezakhi zangaphakathi, okuholela ekunciphiseni isikhathi esibizayo, ukushintsha njalo kukawoyela, kanye nokwehluleka kwephampu ngaphambi kwesikhathi. Isihlungi se-vacuum esinakekelwa kahle sisebenza njengomnakekeli, siqinisekisa ubude besikhathi sephampu nokusebenza okungaguquguquki kwesistimu.
Sengiphetha, ukufakwa kwe-vacuum kungaphezu nje kwenqubo elula yokuvala; kuyisinyathelo esibalulekile sokuqinisekisa ikhwalithi esithuthukisa ukusebenza komkhiqizo, ukwethembeka, kanye nobuhle. Ngokuqonda nokulawula ngokucophelela inqubo-kuhlanganise nokufakwa okubalulekile kokubili kwe-resin kanyevacuum futha izihlungi-abakhi bangaletha izingxenye ezihlangabezana namazinga aphezulu kakhulu ekhwalithi nokuqina.
Isikhathi sokuthumela: Nov-24-2025
