Lokacin da injiniyoyi suka ƙididdige simintin yashi don sassa na ƙarfe masu inganci-musamman a cikin tsarin na'ura mai ƙarfi, kayan mai da iskar gas, ko taron famfo mai nauyi-ba kawai zaɓin tsari bane. Suna zaɓar abokin tarayya wanda ya fahimci yadda tsarin hatsi ke shafar rayuwar gajiya, yadda ƙirar ƙira ke tasiri maimaituwar girma, kuma me yasa haƙurin 0.15 mm akan gidan silinda na cobalt-alloy ba buƙatu bane - buƙatun aikin da ba za'a iya sasantawa ba ne. Wannan shine inda ƙwarewar duniyar duniyar ke raba masu iya samarwa da gaskiya yashi simintin kafa masana'anta abokan tarayya.
Me yasa Yashi Casting Har yanzu Yayi Nasara don Abubuwan Abubuwan Masana'antu-Mahimmanci
Wasu suna ɗaukan simintin yashi na aikace-aikacen gado ne kawai. Amma mun ga yana isar da nasara mai maimaitawa inda sauran hanyoyin suka gaza: manyan simintin ƙarfe na ƙarfe waɗanda ke buƙatar juriya na girgiza zafi a cikin tushen famfo; gidaje na karfe tare da tashoshi masu sanyaya ciki wanda ba zai yiwu a yi amfani da na'ura ba; Abubuwan da ba su da ƙarfi suna buƙatar ƙarfin isotropic a cikin sassan lokacin farin ciki. Makullin shine sarrafawa - ba kawai a kan zub da zafin jiki ko lokacin girgiza ba, amma a kan dukkan sarkar: daidaiton yashi kore, daidaitaccen bugu, ƙirar gating don kwararar laminar, da sake zagayowar taimako na damuwa da aka tabbatar ta hanyar taswirar ma'auni.
A cikin wani aikin kwanan nan, OEM na Turai yana buƙatar jikin bawul ɗin matsa lamba 42 a cikin ASTM A351 CF8M. Mai kawo kayayyaki na farko ya rasa kiran GD&T akan ramukan flange masu hawa uku-wanda ya haifar da tsangwama a cikin na'urar gwaji ta ƙarshe. Mun kama shi yayin tantancewar zane, mun daidaita daftarin tsarin juriya da 0.8°, kuma mun ƙara fil ɗin daidaita ƙirar ƙira ta sakandare. Sakamako: sifili sake yin aiki a cikin raka'a 120. Wannan matakin shiga tsakani ba zai yiwu ba tare da cikakken haɗin kai a tsaye-daga yashi gauraya zuwa aikin injin CNC a ƙasa ɗaya.
Inda ƙwararrun Material suka Haɗu da ladabtarwar tsari
Cobalt-nickel alloys kamar AMS 5387 da T800 ba sa amsa ga al'adar kafuwar gabaɗaya. Babban yanayin narkewar su, ƙarancin ruwa mai ƙarfi, da matsanancin zafin zafin yaga suna buƙatar hanyoyin da suka dace: madaidaitan madaidaitan ɗaure, gyare-gyaren da aka riga aka yi sama da 250 ° C, da ƙimar sanyaya mai sarrafawa ta hanyar saka thermocouples. Mun zubo sama da kilogiram 1,700 na T800 a cikin watanni 18 da suka gabata—kuma kowane tsari yana ɗauke da cikakkiyar ganowa: lambar zafi, rahoton bincike na yanayi, da kuma hotunan ƙananan abubuwa da aka jefa da ke nuna tazarar hannun dendrite a ƙarƙashin 25 µm.
Wannan horo ya wuce fiye da sarrafa gami. Don simintin ƙarfe da aka yi amfani da shi a cikin injin injin abin hawa winch center shaft rollers, muna tabbatar da ƙididdigar nodule graphite (ASTM E2567) da ferrite/pearlite rabo * kafin * fara injin. Me yasa? Saboda wuce gona da iri na 5% pearlite yana haɓaka lokacin niƙa saman da kashi 37% kuma yana yanke rayuwar kayan aiki cikin rabi. Muna auna shi - ba zato ba.
Abin da a zahiri "Ma'ana" Ma'anar Aiki
Madaidaici a cikin simintin yashi ba game da bibiyar jurewar matakin ƙananan matakan kan manyan sassa ba. Yana da game da tsinkaya. Ikon mu na yau da kullun: ± 0.3 mm akan fasalulluka har zuwa 600 mm, ± 0.5 mm akan sassa sama da 1,200 mm — tare da tabbatar da rahotannin labarin farko na CMM da aka haɗa ba tare da ƙarin farashi ba. Amma mafi mahimmanci shine madauki na amsawa: idan zanenku ya yi kira don ƙarewar 12.5 µm Ra akan injin da aka sarrafa, za mu yi alama ko saman simintin zai buƙaci 2.1 mm ko 3.4 mm na cire haja - da kuma yadda hakan ke tasiri ga raguwar izini da sanya wuri.
- Bawul ɗin matsa lamba: GD&T masu dacewa da wuraren zama, an tabbatar da su tare da gaging na iska da ɗigo-gwaji a matsa lamba na 1.5 ×
- Gidajen silinda na famfo na Piston: Matsakaicin ƙazamin da aka riƙe zuwa 0.025 mm TIR a tsayin 450 mm
- Nozzles na cobalt ba daidai ba: Bambancin kauri na bango ana sarrafa shi tsakanin ± 0.18 mm akan ƙananan sassan 8 mm
Ba ma ɗaukar simintin gyare-gyare da injina azaman sassa daban-daban. Waɗannan matakai ne na tsari guda ɗaya-don haka mai shirye-shiryen CNC ya sake duba CT scan ɗin da aka jefa kafin ya rubuta hanyar kayan aiki ta farko. Wannan shine yadda zaku guje wa gano porosity a ƙarƙashin ƙasa mai mahimmanci bayan awoyi 14 na niƙa.
Zaɓar Abokin Hulɗar Da Ya Yi Ba—Ba Alƙawura kawai ba
A yashi simintin kafa masana'anta Ya kamata a amsa tambayoyi uku kafin ku sanya hannu kan PO: Shin za su iya riƙe mafi girman juriyar ku akan mafi hadadden lissafi * a cikin samarwa, ba kawai a cikin samfuri ba? Shin sun mallaki takaddun shaida na kayansu-ko sun dogara da takaddun masu siyarwa? Kuma lokacin da juzu'i ya faru, shin suna raba bayanan tushen tushen (gijiyoyin raƙuman yashi, narkewar bincike, taswirar ƙimar X-ray) ko kawai suna fitar da tsarin aikin gyara?
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki a ƙarƙashin ISO 9001: 2015 tare da ƙa'idodin dubawa don kowane jefa kuri'a. An ba da izini ga kowane ɗanyen abu mai yawa, kowane ɓangaren da aka yi wa zafi yana shiga, kowane abin da aka gama da shi ana duba shi ta gani a ƙarƙashin girman 10 ×. Muna bauta wa abokan ciniki a Arewacin Amurka, Turai, da Kudu maso Gabashin Asiya-ba ta hanyar dillalai ba, amma ta hanyar tattaunawa ta injiniya kai tsaye: fassarar GD&T, ra'ayoyin masana'anta a cikin sa'o'i 48, da sabbin abubuwan samarwa na mako-mako tare da shaidar hoto na mahimman abubuwan ci gaba.
Makomar madaidaicin simintin yashi ya ta'allaka ne a cikin sauye-sauyen aiki-inda yin simintin simintin ya bayyana ma'anar jumhuriyar lissafi da mutunci, kuma injina ke ba da fastoci masu aiki da dacewa. Wannan yana buƙatar zurfin zurfin zurfin zurfin tunani na ƙarfe, ƙaƙƙarfan haɗaɗɗiyar tsari, da rashin haƙuri ga zato. Idan aikin ku na gaba yana buƙatar sassan da suke yi-ba kawai dacewa ba-farawa da tsayuwar tsari, ba kawai ƙimar farashi ba.
