Me yasa titanium alloy abu ne mai wahala ga na'ura?

1. Abubuwan al'amuran jiki na mashin ɗin titanium

Ƙarfin da ake yankewa na sarrafa gawa na 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 da titanium ya fuskanci matsaloli masu yawa.

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 alluran titanium ba za a canja shi da sauri zuwa wurin aiki ba ko kuma kwakwalwan kwamfuta za su tafi da su, amma zai tara a cikin yanki na yanke, kuma yawan zafin jiki da aka haifar zai iya zama har zuwa 1 000 ° C ko fiye. , wanda zai haifar da yanke kayan aiki da sauri da sauri, guntu da fashe. Ƙirƙirar ginin da aka gina, saurin bayyanar da aka sawa, yana haifar da ƙarin zafi a cikin yanki na yanke, yana ƙara rage rayuwar kayan aiki.titanium machining

Babban yanayin zafi 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 sassan da kuma aiki mai ƙarfi wanda ke rage ƙarfin gajiyarsu 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 aikin "lastic" don motsawa daga kayan aiki da billa don jujjuyawa tsakanin kayan aiki da kayan aikin ya fi aikin yankewa. Har ila yau, tsarin jujjuyawar yana haifar da zafi, yana daɗaɗa matsalar rashin kyawun yanayin zafi na gami da titanium.

Wannan matsala ta fi tsanani yayin da ake yin ɓangarorin sirara-bangaren bango ko nau'in zobe waɗanda ke da sauƙi. Ba abu ne mai sauƙi ba yin na'ura mai sikanrin bangon alloy na titanium zuwa daidaiton 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 kuma lalata filastik yana faruwa, kuma ƙarfin kayan aiki da taurin wurin yanke yana ƙaruwa sosai. A wannan lokacin, injina a matakin yankan da aka ƙaddara a baya ya zama mai girma, yana ƙara haifar da lalacewa mai kaifi.

"Zafi" shine "mai laifi" wanda ke da wahalar aiwatar da gami da titanium!

2. Ilimin fasaha dontitanium CNC machining

Dangane da fahimtar tsarin sarrafa kayan aikin titanium gami da ƙara gogewar da ta gabata, babban aikin sanin yadda ake sarrafa alloys titanium shine kamar haka:

(1) Ana amfani da abubuwan da aka saka tare da ingantattun lissafi don rage yanke ƙarfi, yanke zafi da nakasar kayan aikin.

(2) Kula da abinci akai-akai don guje wa taurin kayan aikin. Kayan aiki ya kamata koyaushe ya kasance a cikin yanayin ciyarwa yayin aiwatar da yankan, kuma adadin yankan radial ae yakamata ya zama 30% na radius yayin milling.

(3) Babban matsa lamba da manyan-zuba yankan ruwa da ake amfani da su tabbatar da thermal kwanciyar hankali na machining tsari da kuma hana workpiece degeneration da kayan aiki lalacewa saboda wuce kima zafin jiki.

(4) Rike gefen ruwa mai kaifi, kayan aiki marasa ƙarfi sune sanadin haɓaka zafi da lalacewa, wanda zai iya haifar da gazawar kayan aiki cikin sauƙi.

(5) Machining a cikin mafi taushi yanayin da titanium alloy kamar yadda zai yiwu, domin abu ya zama mafi wuya ga na'ura bayan hardening, da zafi magani ƙara ƙarfi daga cikin abu da kuma kara lalacewa na shigar.

(6) Yi amfani da babban radius na hanci ko chamfer don yanke gwargwadon iyawa cikin yankan gefen. Wannan yana rage yanke ƙarfi da zafi a kowane wuri kuma yana hana karyewar gida. Lokacin milling titanium alloys, a cikin yankan sigogi, da yankan gudun yana da mafi girma tasiri a kan kayan aiki rayuwa vc, bi da radial alkawari (milling zurfin) ae.

3. Fara da ruwa don magance matsalar sarrafa titanium

Lalacewar tsagi na sakawa a lokacin mashin kayan haɗin gwal na titanium shine lalacewa na gida na baya da gaba a cikin zurfin yanke, wanda sau da yawa yakan haifar da taurin Layer da aka bari a baya. Halin sinadarai da yaduwar kayan aiki da kayan aikin aiki a yanayin aiki sama da 800 ° C suma suna daya daga cikin dalilan samuwar tsagi. Domin a lokacin da machining tsari, da titanium kwayoyin na workpiece tara a gaban ruwa da aka "welded" zuwa ruwa gefen karkashin high matsa lamba da kuma high zafin jiki, forming wani gina-up gefen. Lokacin da gefen da aka gina shi ya cire gefen yanke, yana cire murfin carbide na abin da aka saka, don haka aikin titanium yana buƙatar kayan sakawa na musamman da geometries.al'ada daidai machining

4. Tsarin kayan aiki wanda ya dace da mashin din titanium

Mayar da hankali ga sarrafa kayan aikin titanium shine zafi, kuma dole ne a fesa babban adadin ruwan yankan matsa lamba akan yankan a cikin daidaitaccen lokaci kuma daidai don cire zafi da sauri. Akwai na musamman jeri na milling cutters a kasuwa musamman don machining titanium.