Me yasa muke tunanin alloy titanium abu ne mai wahala don injin? Saboda rashin zurfin fahimtar tsarin sarrafa shi da al'amuransa.
1. Al'amuran Jiki na Titanium Machining
Ƙarfin da ake yankewa na sarrafa kayan aikin titanium ya ɗan fi ƙarfin ƙarfe mai ƙarfi iri ɗaya, amma al'amuran zahiri na sarrafa alloy ɗin 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 alloy na titanium ba za a canza shi da sauri zuwa ga workpiece ko cire shi ta hanyar kwakwalwan kwamfuta ba, amma za a tara shi a cikin yanki na yanke, kuma zafin da aka haifar zai iya zama kamar 1000 ° C, yana haifar da yankan kayan aikin da za a sawa, fashe da mutuwa da sauri. Ƙarfafa haɓakar haɓakawa, saurin bayyanar sawa gefuna, bi da bi yana haifar da ƙarin zafi a yankin yanke, yana ƙara rage rayuwar kayan aiki.
Babban zafin jiki da aka haifar yayin aiwatar da yankewa kuma yana lalata amincin farfajiyar sassan alloy na titanium, wanda ke haifar da raguwar daidaiton juzu'i na sashin da aikin taurara sabon abu wanda ke rage ƙarfin gajiyarsa sosai.
Ƙwararren ƙarfe na titanium na iya zama da amfani ga aikin sashi, amma a lokacin yankan, nakasar nakasar kayan aiki shine muhimmin dalilin girgiza. Matsakaicin yanke yana haifar da aikin "lastic" don barin kayan aiki da sake dawowa, don haka rikici tsakanin kayan aiki da kayan aiki ya fi aikin yankewa. Har ila yau, tsarin jujjuyawar yana haifar da zafi, wanda ke damun matsalar rashin kyawun yanayin zafi na gami da titanium.
Wannan matsala ta fi tsanani yayin sarrafa sassa masu sirara ko siffa mai siffar zobe waɗanda suke da sauƙi. Ba abu ne mai sauƙi ba don aiwatar da sassan titanium gami da bakin bangon bango zuwa daidaitaccen girman girman da ake tsammani. Domin lokacin da kayan aiki ya kori kayan aiki, ƙayyadaddun gida na bangon bakin ciki ya wuce iyaka na roba don samar da nakasar filastik, kuma ƙarfin abu da taurin a wurin yanke yana ƙaruwa sosai. A wannan lokacin, mashin ɗin a farkon ƙaddarar saurin yankewa ya zama mai girma, wanda ke ƙara haifar da lalacewa na kayan aiki.
"Zafi" shine "mai laifi" don wahalar sarrafa kayan aikin titanium!
2. Ilimin fasaha don sarrafa kayan aikin titanium
Dangane da fahimtar tsarin sarrafa kayan gami na titanium, haɗe tare da gogewar da ta gabata, babban aikin sanin yadda ake sarrafa alloys titanium shine kamar haka:
(1) Saka tare da ingantacciyar joometry na kusurwa don rage yanke ƙarfi, yanke zafi da nakasar aikin aiki.
(2) Ci gaba da ciyarwa akai-akai don guje wa taurin kayan aikin. Kayan aiki ya kamata koyaushe ya kasance a cikin yanayin ciyarwa yayin aikin yankewa. Adadin yankan radial ae yakamata ya zama 30% na radius yayin niƙa.
(3) Ana amfani da matsi mai girma da babban ruwa mai ɗorewa don tabbatar da kwanciyar hankali na thermal na machining da kuma hana aikin aiki daga lalacewa da lalacewar kayan aiki saboda yawan zafin jiki.
(4) Kiyaye yankan wukake mai kaifi, wuƙaƙen wuƙaƙe sune ke haifar da haɓaka zafi da lalacewa, wanda ke haifar da gazawar wukake cikin sauƙi.
(5) Yin aiki a cikin mafi sauƙi na titanium alloy kamar yadda zai yiwu, saboda kayan aiki ya zama mafi wuyar aiwatarwa bayan daɗaɗɗa, maganin zafi yana inganta ƙarfin kayan aiki kuma yana ƙara yawan lalacewa.
(6) Yi amfani da babban radius na hanci ko chamfer don yanke gwargwadon iyawa cikin yankan gefen. Wannan zai iya rage ƙarfin yankewa da zafi a kowane wuri kuma ya hana fashewar gida. Lokacin da milling titanium gami, a cikin yankan sigogi, da yankan gudun yana da mafi girma tasiri a kan kayan aiki rayuwa vc, bi da radial yankan adadin (milling zurfin) ae.
Kayan aikin Xinfa CNC suna da halaye na inganci mai kyau da ƙarancin farashi. Don cikakkun bayanai, da fatan za a ziyarci:
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3. Magance matsalolin sarrafa titanium farawa daga ruwa
Lalacewar tsagi da ke faruwa a lokacin sarrafa gami da titanium shine lalacewa na gida na baya da gaba tare da zurfin jagorar yanke, wanda galibi ke haifar da taurin Layer da aikin da ya gabata ya bari. Halin sinadaran da yaduwa tsakanin kayan aiki da kayan aikin aiki a yanayin aiki da ya wuce 800 ° C shima yana daya daga cikin dalilan samuwar tsagi. Domin a lokacin aiki, da titanium kwayoyin na workpiece tara a gaban ruwa, kuma suna "welded" zuwa ruwa karkashin high matsa lamba da kuma high zafin jiki, forming ginannen gefen. Lokacin da aka gina gefen bawo daga gefen yanke, yana ɗauke da murfin carbide na abin da aka saka, don haka aikin titanium yana buƙatar kayan sakawa na musamman da geometries.
4. Tsarin kayan aiki wanda ya dace da mashin din titanium
Mayar da hankali na sarrafa gami da titanium shine zafi. Dole ne a fesa babban adadin ruwan yankan matsa lamba akan yankan a cikin daidaitaccen lokaci kuma daidai don cire zafi da sauri. Akwai sifofi na musamman na masu yankan niƙa waɗanda aka yi amfani da su musamman don sarrafa gami da titanium akan kasuwa.
Lokacin aikawa: Agusta-09-2023
