Impembelelo ye-titanium powder yokubumba inkqubo yokubumba i-sintering ekusebenzeni

Umgubo wentsimbi utshisiweezinemingxumaizinto zenziwe ngesinyithi okanye i-alloy powders njengezinto eziluhlaza kwaye zenziwe kwaye zifakwe kwi-sintered kumaqondo aphezulu. Zizinto eziphathekayo ezinokwakheka okuqinileyo.

Inkqubo yokuvelisa: ukuhlolwa - ukucinezela isostatic - vacuum ukushisa okuphezulu kwe-sintering

Iimpawu zesakhiwo: Izinto eziphathekayo ziqulethe inani elikhulu lee-pores ezidibeneyo okanye ezidibeneyo. Ubume bepore bubunjwa ngokupakisha amasuntswana omgubo oqhelekileyo kunye angaqhelekanga. Ubungakanani kunye nokusabalalisa kwee-pores kunye nobukhulu be-porosity bunokulungelelaniswa ngokwendlela yokudibanisa ubungakanani bepowder kunye nenkqubo yokulungiselela. Ukuhlangabezana neemfuno zokwenene zabathengi.

Iinzuzo zeMveliso: ukunyanzeliswa okulungileyo, ubungakanani obunokulawulwa kwe-pore kunye ne-pores, ukumila okuzinzile, ukuchaneka okuphezulu kokucoca, ukuxhathisa ukunxiba, iipropathi ezilungileyo zoomatshini, ukuhanjiswa kakuhle kwe-thermal, ukumelana nobushushu, kunye neempawu zokutshatyalaliswa kobushushu, kwaye zinokuhlanjwa kwaye zisetyenziswe ngamaxesha amaninzi.

Iimpawu ezisebenzayo ze-titanium sintered porous materials:

1. 1) I-pore elinganayo, i-pores ezinzile, kunye nokusebenza kakuhle kokwahlula.

1. 2) I-porosity ephezulu, ukuchasana nokuhluzwa okuncinci kunye nokusebenza kakuhle kokungena.

1. I-3) Uzinzo oluhle lweekhemikhali, i-asidi kunye ne-alkali ukumelana nokugqwala, kunye neempawu ezichasene ne-oxidation.

1. I-4) Isakhiwo se-morphological sizinzile, akukho zincinci ziwa, kwaye zihlangabezana neemfuno zokucoceka kokutya kunye ne-GMP yamachiza.

1. I-5) Iimpawu ezilungileyo zomatshini, ukuhluka koxinzelelo oluphantsi kunye nesantya esikhulu sokuhamba.

1. 6) Inamandla okulwa ne-antimicrobial kwaye ayihambelani ne-microorganisms.

1. 7) Inokuhlaziywa kwi-intanethi, kulula ukuyicoca kwaye inobomi obude benkonzo.

1. I-8) I-biocompatibility egqwesileyo, inokusetyenziswa ngokubanzi kwi-biological, ukutya, amayeza kunye namashishini ezonyango.

1. 9) Ukusebenza okugqwesileyo kwe-electromagnetic wave shielding.

1. I-10) Iimpawu ezintle zokudambisa kunye nokuchasana kwempembelelo.

Sintering yenye yezona nkqubo zibalulekileyo kwiInkqubo yeMIM. Ayisusi kuphela isibophelelo esishiyekileyo kodwa ikwasusa iipores phakathi kwamasuntswana omgubo, okwenzaImveliso yeMIMixinene ngokupheleleyo okanye iphantse yaxinana ngokupheleleyo. Iukutyunjwa kwe-titaniumi-alloy ifuna ubushushu obuphezulu. Okusingqongileyo, inkqubo ye-sintering kufuneka ikhuselwe ngegesi ye-argon kangangoko kunokwenzeka. Ixesha le-sintering kolu vavanyo lusetelwe ukugcina ubushushu obungaguqukiyo kangangemizuzu eyi-120, kwaye ubushushu obuphezulu yi-1220℃, 1240℃, 1250℃, 1270℃ kunye ne-1290℃ ngokulandelelanayo kwi-TC4 iindawo ezotyiweyo kunye namalungu angqukuva. Amalungu emilo ayatshizwa.

Inkqubo ye-Sintering ye-TC4 yamacandelo anzima

Inkqubo ye-Sintering yeengxenye zesetyhula

Ukusuka kwinkqubo ye-sintering yamacandelo ajikelezayo, kunokubonwa ngokucacileyo ukuba xa i-TC4 ihlala kwimizuzu eyi-120, ukuxinana okuphezulu kunokufumaneka kwi-1250 ° C, kwaye ubuninzi buyancipha njengoko ubushushu bukhula. Oku kungenxa yokuba ukukhula kweenkozo kwenzeka kumaqondo obushushu aphezulu kakhulu. Izikhewu phakathi kwemida yeenkozo nazo ziba nkulu, nto leyo ekhokelela ekubeni amandla esivuno seendawo eziqinileyo ezisezantsi zibe ngaphantsi kwe-1250°C emva kobushushu obuphezulu.

Umzobo we-TC4 metallographic kwi-1250 ℃

Sintered TC4 iinxalenye ezingqukuva

Ukuze siqonde ubudlelwane phakathi kwamaqondo okushisa ahlukeneyo kunye namaxesha okubamba kunye ne-TC4 ye-sintering densification, sikhethe i-1240 ° C, i-1250 ° C kunye ne-1270 ° C ukuqhuba iimvavanyo njengoko kuboniswe ngezantsi. Umoya we-sintering yonke indawo yegesi ye-argon.

Umoya we-sintering yi-argon

Ukusetyenzwa kwedatha kunye nohlalutyo

Ngokweenkcukacha zoxinaniso zesampulu emva kwe-sintering, akunzima ukubona ukuba ubuninzi obufunyenwe ngokubamba ukushisa kwi-1250 ° C kwi-120-180 imizuzu iphezulu kunezinye iinkqubo. Ngokusekwe kubudlelwane phakathi kwenkqubo ye-sintering ye-TC4 ezotyiweyo kunye neenxalenye ezijikelezileyo ze-TC4, siphinda sigqibe kwelokuba ukuxinana kuphezulu kunoko kufunyenwe ngezinye iinkqubo. Uxinaniso kunye namandla okuvelisa ahambelanayo, ngoko ke ukuxinana kunye neempawu zomatshini ezifunyenwe ngokubamba ukushisa kwi-1250 ° C kwi-120min ~ 180min ziphezulu; oku kungenxa yokuba ubushushu obuphezulu kakhulu kunye nexesha elifutshane kakhulu lokubamba aliphuculi inkqubo ye-titanium alloy sintering. Iikristale ze-Titanium alloy zixinene ngokufanelekileyo. Ngokufanayo, ubushushu obuphantsi kunye nokugcinwa kobushushu ixesha elide kuya kubangela ukuba amandla okuqhuba umgubo asetyenziswe ngokuqhubekayo ngenxa yesantya esicothayo sokusasazwa kwemida yeenkozo. Ngethuba lokuhamba kunye nenkqubo yokusabalalisa imida yengqolowa, ukugqithwa okulungileyo kunye ne-slip ye-crystal lattice ayinakufezekiswa. Ngale ndlela, kusekho izikhewu ezithile ngaphakathi ezingenakususwa, nto leyo eyenza kube nzima ukufezekisa ukuxinana okungcono.

ukuququmbela

Inkqubo ye-industrialization ye-MIM titanium alloy iyinkimbinkimbi, kwaye kukho izinto ezininzi ezichaphazela ukuxinana kokugqibela kunye neempawu zomatshini zemveliso. Ngaphantsi kwezi meko zovavanyo, emva kokuqwalaselwa ngokubanzi koxinaniso lwemveliso kunye neempawu zoomatshini, sasebenzisa isithando somlilo se-HP esiphezulu se-vacuum ukuze siqhubeke sinter kwi-1250 ° C ngemizuzu eyi-120. Oku kuvumela i-TC4 ukuba ibenoxinzelelo oluphezulu kwaye ifumane amandla aphezulu esivuno, ivula indlela yoshishino lwe-MIM-TC4.