mankhwala

Kupanga singano yabwinoko, ndiyeno zokumana nazo zabwinoko pamene madokotala ochita opaleshoni amagwiritsa ntchito sutures mu opaleshoniyo. Akatswiri opanga zida zamankhwala adayesa kupanga singanoyo kukhala yakuthwa, yamphamvu komanso yotetezeka m'zaka makumi angapo zapitazi. Cholinga ndi kukhala ndi singano sutures ndi ntchito amphamvu, lakuthwa mosasamala kanthu kuchuluka malowedwe kuchita, otetezeka kwambiri kuti konse anathyola nsonga ndi thupi pa kudutsa zimakhala. Pafupifupi giredi lalikulu lililonse la aloyi lidayesedwa kugwiritsa ntchito singano za singano zopangira pamwambapa. Mitundu ina yamitundu yosiyanasiyana yomwe imagwiritsidwa ntchito pamtundu uliwonse wapadera imakhala ndi zitsulo zamtengo wapatali zomwe zimasunga izi.

Zachuma komanso zotsika mtengo nthawi zonse kusankha msika. Mafano a alloy a sutures siwosavuta kukonza ndi kupanga zomwe zimabweretsa mtengo wokwera. Kumbali ina, si maopaleshoni onse omwe ali ndi pempho pazomwe zili pamwambazi. Ngakhale madokotala ena opaleshoni ngati singano pang'ono lofewa. Kufotokozera zakuthwa kwa singano kudzera mu Penetration Force Test, kufotokoza mphamvu ya singano kudzera mu Bending Moment test, kufotokoza chitetezo kudzera mu mayeso a Ductility. Kupititsa patsogolo ntchito ya Penetration Force, ukadaulo wolondola komanso wogaya pang'ono unayambitsidwa ku mafakitale omwe adasunga cholinga ichi. Chovuta ndi kupanga bwino pakati pa Bending Moment ndi Ductility, popeza aloyiyo imakhala yosalimba pomwe imapangitsa kuti ikhale yovuta, ndipo izi zimasankha kusankha kwa alloy.

Masingano ambiri a sutures anapangidwa ndi ANSI 302/304 aloyi tsopano, pamaso ANSI 302/304, 400 mndandanda aloyi ankagwiritsa ntchito kwa Sutures singano kwa zaka zambiri, kuphatikizapo 420J2, 455F ndi 470.

420J2 ndiye aloyi wachuma kwambiri wa singano za sutures. 420J2 chitsulo ndi martensitic chitsulo chosapanga dzimbiri, ntchito pambuyo kuzimitsa ndi kutentha. Kuzizira ntchito ntchito kuwotcherera ntchito si zabwino, pambuyo kuwotcherera ayenera yomweyo kutentha mankhwala, kupewa akulimbana. Ili ndi machinability yabwino pansi pa chikhalidwe cha annealing.

Aloyi 455 ndi martensitic ukalamba woumitsa chitsulo chosapanga dzimbiri, chokhala ndi chitsulo chofewa, chowongoka chimatha kupangidwa, chithandizo chosavuta cha kutentha, mutha kupeza mphamvu zapadera zolimba, kulimba kwabwino komanso kuuma. Custom 455 imatha kukonzedwa ngati chitsulo chosapanga dzimbiri ndipo imatha kuwotcherera ngati mvula yowumitsa chitsulo chosapanga dzimbiri. Monga ntchito kuumitsa mlingo ndi yaing'ono, kungakhale zosiyanasiyana ozizira kupanga. Alloy 470 ndi chitsulo chosapanga dzimbiri cha martensitic, chomwe chimapereka singano yolimba.

Opaleshoni yamtima ndi Mitsempha imafunika kuchita bwino monga pamwambapa ndi ma ophthalmic sutures, opangidwa ndi 302/304 alloy. Opaleshoni yambiri mu dipatimenti yodzidzimutsa safunikira pempho lapamwamba kwambiri lomwe limapangidwa ndi 420J2 ndi singano ya 455, ma code ochepa okha adapangidwa ndi 470 alloy.