Kafin wasu abokan ciniki sun yi shawara game da gami da titanium, kuma suna tunanin cewa sarrafa gami da titanium yana da wahala musamman.Yanzu, abokan aiki daga Sashen Fasaha na RSM za su raba tare da ku dalilin da yasa muke tunanin titanium alloy abu ne mai wahala don sarrafawa?Saboda rashin zurfin fahimtar tsarin sarrafa shi da al'amuransa.
1. Abubuwan al'amuran jiki na sarrafa titanium
Ƙarfin yankan alloy ɗin titanium ya ɗan fi ƙarfin ƙarfe mai ƙarfi iri ɗaya, amma al'amuran zahiri na sarrafa alloy na titanium ya fi rikitarwa fiye da na sarrafa ƙarfe, wanda ke sa sarrafa gami na titanium ya fuskanci matsaloli sosai.
Thermal watsin mafi yawan titanium alloys ne sosai low, kawai 1/7 na karfe da 1/16 na aluminum.Saboda haka, zafi da aka haifar a cikin aiwatar da yankan gami na titanium ba za a canza shi da sauri zuwa wurin aiki ko kwakwalwan kwamfuta za su tafi da su ba, amma za a mai da hankali a cikin yanki na yanke, kuma zafin da aka haifar zai iya zama sama da 1000 ℃ ko sama. ta yadda yankan kayan aikin zai iya saurin lalacewa, fashe da haifar da ciwace-ciwacen guntu.Sawa mai saurin sawa kuma zai iya haifar da ƙarin zafi a cikin yanki, yana ƙara rage rayuwar kayan aiki.
Babban zafin jiki da aka samar a cikin tsarin yankan kuma yana lalata amincin sassan sassan alloy na titanium, wanda ke haifar da raguwar daidaiton sassan sassan da kuma fitowar aikin taurara sabon abu wanda ke rage karfin gajiyarsu.
Ƙwararren ƙarfe na titanium na iya zama da amfani ga aikin sassa, amma a cikin tsarin yankan, nakasar kayan aiki mai mahimmanci shine dalili mai mahimmanci don rawar jiki.Matsakaicin yankan yana sanya kayan aikin "na roba" ya bambanta daga kayan aiki da sake dawowa, don haka juzu'i tsakanin kayan aiki da kayan aiki ya fi tasirin yankewa.Har ila yau, tsarin jujjuyawar yana haifar da zafi, wanda ke damun ƙarancin zafin wutar lantarki na alloys titanium.
Wannan matsalar tana ƙara yin muni yayin yin injin sirara-bangaren bango ko sifar zobe waɗanda suke cikin sauƙi.Ba abu ne mai sauƙi ba don na'ura sirara-ɓangare na gami da bangon titanium zuwa daidaiton girman girman da ake tsammani.Yayin da kayan aikin ke tura kayan aiki, ƙayyadaddun gida na bangon bakin ciki ya wuce iyakar na roba kuma lalata filastik yana faruwa, kuma ƙarfin abu da taurin a wurin yanke yana ƙaruwa sosai.A wannan lokacin, saurin yankan da aka ƙayyade na asali zai zama mai girma, yana ƙara haifar da lalacewa mai kaifi.
"Zafi" shine "mai laifi" na titanium gami da wahalar sarrafawa!
2. Tsari tukwici don sarrafa titanium gami
Dangane da fahimtar tsarin sarrafa kayan aikin titanium gami da gogewar da ta gabata, babban ilimin fasaha don sarrafa gami da titanium shine kamar haka:
(1) The ruwa tare da tabbatacce kwana geometry da ake amfani da su rage yankan karfi, yankan zafi da workpiece nakasawa.
(2) Kula da bargaciyar ciyarwa don gujewa taurin kayan aikin.Kayan aiki zai kasance koyaushe a cikin yanayin ciyarwa yayin aikin yankewa.Adadin yankan radial ae yayin niƙa zai zama 30% na radius.
(3) Ana amfani da babban matsin lamba da babban ruwan yankan ruwa don tabbatar da kwanciyar hankali na thermal na tsarin mashin ɗin, da kuma guje wa lalacewar farfajiyar kayan aikin da lalata kayan aiki saboda yawan zafin jiki.
(4) Kiyaye ruwa mai kaifi.Kayan aiki mara kyau shine dalilin tarin zafi da lalacewa, wanda kawai ke haifar da gazawar kayan aiki.
(5) Kamar yadda zai yiwu, ya kamata a sarrafa shi a cikin yanayi mai laushi na titanium gami.Yayin da abu ya zama da wuya a aiwatar da shi bayan daɗaɗɗa, maganin zafi yana inganta ƙarfin kayan aiki kuma yana ƙara yawan lalacewa.
(6) Yi amfani da babban radius na tip baka ko chamfer don yanke ciki, da sanya yawan ruwan wukake a cikin yankan gwargwadon yiwuwa.Wannan zai iya rage ƙarfin yankewa da zafi a kowane wuri kuma ya guje wa lalacewar gida.Lokacin milling titanium gami, da yankan gudun yana da babban tasiri a kan kayan aiki rayuwa vc, bi da radial yankan (milling zurfin) ae.
3. Magance matsalolin sarrafa titanium daga ruwa
Lalacewar tsagi na ruwa yayin sarrafa gami da titanium shine lalacewa na gida na baya da gaba tare da zurfin yanke, wanda sau da yawa yakan haifar da taurin Layer wanda aikin baya ya bari.A sinadaran dauki da yada kayan aiki da workpiece abu a aiki zafin jiki na fiye da 800 ℃ ne kuma daya daga cikin dalilan samuwar tsagi lalacewa.Kamar yadda kwayoyin titanium na workpiece suka taru a gaban ruwa yayin aiki, ana "welded" zuwa ruwa a ƙarƙashin matsanancin matsin lamba da zafin jiki, suna samar da ƙwayar cuta ta guntu.Lokacin da aka cire guntu da aka gina daga ruwan wukake, ana ɗaukar murfin carbide da aka yi da siminti na ruwa.Saboda haka, titanium gami aiki na bukatar musamman ruwa kayan da geometric siffofi.
Lokacin aikawa: Satumba-27-2022