Incazelo Ebanzi Ye-ASTM F67 GR2 I-Medical Grade Titanium Rod TA2

Lapho kukhiqizwa izinduku ze-titanium yezokwelapha, kubalulekile ukuthi ungafaki izinto zezimboni esikhundleni se-ASTM F67 yezokwelapha GR. Sanibonani nonke, namuhla sikhuluma nge-ASTM F67 GR2, okuyizinga lezokwelapha le-T2 titanium emsulwa. I-F67 iyindinganiso ye-titanium emsulwa yokufakelwa kuhlinzwa, futhi ihlukaniswe ngamazinga amane: GR1 kuya ku-GR4. Leso esisisebenzisa kakhulu i-GR2, ehambisana nendinganiso yaseShayina i-GBT 13810. I-TA2 yezokwelapha ingeye-alpha titanium emsulwa, ayinazo izakhi ze-alloy, inokuhambisana okuhle kwe-biocompatibility, ayinamagnetic ku-nuclear magnetic resonance, futhi isetshenziselwa kakhulu izisekelo zamazinyo kanye nokufakelwa kwamathambo amancane. Abantu abaningi bacabanga ukuthi ukwakheka kwayo kufana ne-TA2 yezimboni ejwayelekile futhi kungashintshwa, kodwa lokhu kuyiphutha elikhulu. Nakuba zombili ziyi-TA2, i-F67 inokulawula okuqinile kwezinto ezincane. I-hydrogen content iphezulu kakhulu ku-0.015%, ilawula ngokuqinile i-hydrogen embrittlement. Ukuncibilika kufanele kwenziwe nge-secondary vacuum self-dissolution remelting ukuze kuncishiswe izimbobo zangaphakathi kanye nezinto ezingcolile, futhi inqubo yonke ingalandelelwa. Mayelana nezici zomshini, isimo se-annealed sinamandla okudonsa angaphezu noma alingana no-345 MPa, amandla okukhiqiza angaphezu noma alingana no-275 MPa, kanye nokwelula okungaphezu noma okulingana no-20%. Ukuguquguquka kuhle kakhulu, kufanele ukucutshungulwa okubandayo, futhi inqubo yokushaya ifanele iqale ngezinga lokushisa lika-1000-1050°C, nezinga lokushisa lokushaya lokugcina lingabi ngaphansi kuka-700°C ukuvimbela ukuqhekeka. Umkhiqizo ophelile ubuyiselwa ezingeni lokushisa lika-600-700°C, bese kudingeka ukuhlolwa kwe-ultrasonic ukuqinisekisa ukuthi azikho izinkinga zangaphakathi. Uma kuqhathaniswa ne-F136, G23, ne-F67 titanium emsulwa, ukuguquguquka kuhle, kodwa amandla aphansi, akufaneleki ezingxenyeni zokufakelwa ezithwala kanzima. I-ASTM B348 GR2 yezimboni inezidingo ezixegayo zokungcola futhi ayinakho ukulandelelwa kwesistimu yezokwelapha. Emkhakheni wemishini yezokwelapha, akuvunyelwe ukushintsha i-ASTM F67. Lapho kukhiqizwa izingxenye ze-titanium yezokwelapha, indinganiso yezinto kufanele ihambisane nezidingo.