Ukucinezela okushushu, ukulandelelana okulawulwayo koxinzelelo kunye nobushushu kusetyenziswa. Rhoqo, uxinzelelo lusetyenziswa emva kokufudumeza okuthile ngenxa yokuba ukufaka uxinzelelo kumaqondo obushushu asezantsi kunokuba neziphumo ezibi kwinxalenye nakwisixhobo. Ukushisa okucinezelayo okushushu ngamawaka eedigri asezantsi kunamaqondo obushushu ashushu rhoqo. Phantse uxinaniso olupheleleyo lwenzeka ngokukhawuleza. Isantya senkqubo kunye namaqondo obushushu asezantsi afunekayo ngokwendalo anciphisa ukukhula kokutya okuziinkozo.
Indlela enxulumene noko, yintlantsi yeplasma sintering (SPS), ibonelela ngenye indlela yokuchasana kwangaphandle kunye neendlela zokufudumeza zangaphandle. Kwi-SPS, isampulu, umgubo oqhelekileyo okanye indawo eluhlaza eluhlaza, ilayishwe kwigrafiti yokufa ngeempompo zegrafite kwigumbi lokucoca kwaye i-DC yangoku isetyenzisiwe kuyo yonke inqindi, njengoko kubonisiwe kumfanekiso 5.35b, ngelixa uxinzelelo lusetyenziswa. Okwangoku kubangela ukufudumeza kweJoule, okunyusa ubushushu be-specimen ngokukhawuleza. Okwangoku kukholelwa ukuba kubangela ukuyilwa kweplasma okanye ukubhobhoza ngaphakathi kwisithuba sepore phakathi kwamasuntswana, anefuthe lokucoca umphezulu wamasuntswana kunye nokwenza ngcono ukuntywila. Ukwenziwa kweplasma kunzima ukuyiqinisekisa ngokuzama kwaye kungumxholo ophantsi kwengxoxo. Indlela ye-SPS ibonakalisiwe ukuba iyasebenza kakhulu kuxinzelelo lwezinto ezahlukeneyo, kubandakanya isinyithi kunye neseramikhi. Uxinaniso lwenzeka kubushushu obusezantsi kwaye lugqitywa ngokukhawuleza ngakumbi kunezinye iindlela, oko kukhokelela kwimicroructures efanelekileyo yokutya okuziinkozo.
Ukucinezela eshushu kwe-Isostatic (HIP). Ukucinezelwa kwe-isostatic eshushu kukusetyenziswa ngaxeshanye kobushushu kunye noxinzelelo lwe-hydrostatic yokuxinana kunye nokwenza uxinano lomgubo okanye inxenye. Inkqubo iyafana nokucinezelwa kwe-isostatic ebandayo, kodwa ngobushushu obuphezulu kunye negesi ehambisa uxinzelelo kwinxalenye. Iigesi ze-Inert ezifana ne-argon ziqhelekile. Umgubo uxinene kwisitya okanye unakho, osebenza njengomqobo okhubazekayo phakathi kwerhasi exinzelelweyo kunye nenxalenye. Ngenye indlela, indawo edityanisiweyo yaze yanyanzeliswa ukuya kuthi ga kwinqanaba lokuvalwa kwepore inokufakwa kwi-HIP kwinkqubo "engenazinto". I-HIP isetyenziselwa ukufezekisa uxinano olupheleleyo kwisinyithi somgubo. kunye nokusebenza kwe ceramic, kunye nokusetyenziswa okuthile kuxinaniso lokuphosa. Indlela ibaluleke ngokukodwa ekunzima ukuqinisa izinto, ezinje ngeealloys ezichasayo, ii-superalloys, kunye ne-nonoxide ceramics.
Isikhongozelo kunye netekhnoloji yokufaka encapsulation ibalulekile kwinkqubo ye-HIP. Izikhongozeli ezilula, ezinje ngeenkonkxa zensimbi ezijikelezayo, zisetyenziselwa ukuxinanisa iibhloko zealloy powder. Iimilo ezinobunzima zenziwe kusetyenziswa izikhongozeli ezibonisa indawo yokugqibela yejometri. Isixhobo sekhonteyina sikhethwe ukuba sihlale siqinile kwaye sikhubazeke phantsi koxinzelelo kunye nobushushu benkqubo yeHIP. Izinto zesikhongozeli kufuneka zingasebenzi kunye nomgubo kwaye kube lula ukususa. Ukunyibilikisa umgubo ngesinyithi kuqhelekile. Olunye ukhetho lubandakanya iglasi kunye neeseramiki ezingena ngaphakathi ezifakwe kwisinyithi sesibini. I-Glass encapsulation ye-powders kunye neendawo ezenziwe kwangaphambili ziqhelekile kwiinkqubo ze-ceramic HIP. Ukuzaliswa kunye nokukhutshwa kwesikhongozeli linyathelo elibalulekileyo elihlala lifuna ukulungiswa okhethekileyo kwisitya uqobo. Ezinye iinkqubo zokufuduka zenzeka kubushushu obuphezulu.
Izinto eziphambili zenkqubo ye-HIP zizikhephe zoxinzelelo ezinezifudumezi, uxinzelelo lwegesi kunye nezixhobo zokuhambisa, kunye nolawulo lwe-elektroniki. Umzobo 5.36 ubonakalisa umzekelo osikiweyo wokuseta kwe-HIP. Zimbini iindlela zokwenza umsebenzi weHIP. Kwimowudi yokulayisha eshushu, isikhongozeli sigqityiwe shushu ngaphandle kwesitya soxinzelelo emva koko silayishwe, shushu shushu kwiqondo lobushushu elifunekayo kwaye sicinezelwe. Kwimowudi yokulayisha ebandayo, isitya sifakwa kwisitya soxinzelelo kubushushu begumbi; emva koko umjikelo wokufudumeza kunye noxinzelelo uqala. Uxinzelelo kuluhlu lwama-20-300 MPa kunye nobushushu kuluhlu lwama-500-2000 ° C ziqhelekile.
Ixesha Post: Nov-17-2020