Lokacin da injiniyoyi suka bayyana a bawul wurin zama factory, Ba wai kawai suna yin odar wani ɓangare ba - suna tabbatar da kwanciyar hankali a ƙarƙashin mashaya 350, suna juriya bayan zagayowar 10,000, da daidaiton ƙarfe a cikin raka'a 500. Mun ga ayyuka da yawa sun tsaya tsayin daka saboda wurin zama ya rikice yayin hawan keken zafi, ko ƙananan porosity ya haifar da ɗigon ruwa da wuri a cikin manifolds na ruwa. Shi ya sa madaidaicin ba shine da'awar tallace-tallace ba - shine mafi ƙarancin shigar da ake bukata.
Me yasa "Ma'aikatar Kujerar Valve" Sha'idar Neman Ruɗi ce - Kuma Abin da Ake Bukata
Yawancin masu siye suna rubuta "masana'antar kujerun bawul" cikin Google suna tsammanin samar da maɓalli. Amma a aikace, nasara ta ta'allaka ne akan iyakoki guda uku waɗanda ba za'a iya sasantawa ba: ƙwararrun kayan aiki, amincin jumhuriya, da gano tsari. Dole ne abokin tarayya na gaskiya ya rike AMS 5387 cobalt alloy-ba inji shi kawai ba, amma jefa shi tare da tazarar dendritic mai sarrafawa, sannan ya gama-ba da saman rufewa zuwa ± 0.005 mm TIR yayin da yake kiyaye damuwa saura. Mun isar da kujerun bawul na 12,000 don famfunan piston mai matsa lamba tun daga 2019. Kowane tsari yana ɗaukar cikakken yanayin yanayin zafi, rahoton CMM na diamita mai mahimmanci, da kuma tabbatar da ƙarancin ƙasa a Ra ≤ 0.4 µm akan fuskokin rufewa.
Haƙiƙanin Fasaha huɗu Mafi yawan Masu Kayayyaki Ba Za su Bayyana ba
Na farko, cobalt-nickel alloys suna buƙatar haɗaɗɗun aikin simintin inji. Kujerun simintin yashi galibi suna buƙatar cire haja kashi 40 cikin ɗari - da yawa don daidaitattun hanyoyin kayan aiki. Muna amfani da abubuwan da ake sakawa na carbide na al'ada tare da suturar PVD TiAlN da ƙimar abinci mai daidaitawa waɗanda ke sauke daga 120 mm/min zuwa 35 mm/min lokacin ƙetare yankin da zafi ya shafa kusa da fuskar wurin zama.
Na biyu, fassarar GD&T tana shafar aiki kai tsaye. Wurin zama da aka kayyade tare da jurewar matsayi na mm Ø0.015 dangane da gunkin matukin jirgi? Wannan yana buƙatar daidaitawar gani a cikin tsari-ba dubawa ba bayan kammalawa. Muna tabbatar da dangantakar datum kafin maganin zafi na ƙarshe, ba bayan.
Na uku, mutuncin saman yana haifar da rashin ƙarfi kaɗai. Muna auna ƙaramin taurin gradients a saman fuskar wurin zama (HV300-HV420) kuma muna yin gwajin shigar da ruwa a kan duk kuri'a-ba kawai samfuran ba-don kama abubuwan da ke ƙasa ga CMM.
Na hudu, takaddun shaida ba shi da ma'ana ba tare da haɗin gwiwar mai bayarwa ba. Muna haɓaka ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun billet tare da dillalan cobalt gami a cikin Jamus, muna ba da umarni ga ASTM E112 girman rahoton girman hatsi da kuma tabbatar da juriya na lalata tsaka-tsaki ta ASTM G28A.
Abin da Ya Keɓance Maƙerin Wurin Wuta na Valve Banda
Ba batun mallakar injinan CNC ba ne. Yana game da sarrafa abin da ke faruwa a tsakanin su:
- Ikon simintin gyare-gyare: Simintin zuba jari don hadaddun geometries (misali, hadedde fins sanyaya), yashi simintin gyare-gyare ga manyan diamita kujeru-duka tare da real-lokaci thermal saka idanu a lokacin solidification
- Injin horo: Multi-axis gama na conical sealing saman ta amfani da Rotary Tables tare da ± 1 baka-na biyu maimaitawa, ba kawai 3-axis milling.
- Haɗin maganin zafi: Rage damuwa a 950 ° C tare da argon backfill, biye da sanyaya mai sarrafawa a 15 ° C / awa don hana tsarin sigma a cikin cobalt alloys.
- Ƙarshen tabbatarwa: Taswirar yanayin saman saman ta hanyar interferometry mai haske-ba kawai wucewar profilometer ba - don tabbatar da rabon yanki (Abbott curve) ya dace da buƙatun hatimin ruwa.
Mun ƙi 6.2% na shigowar cobalt alloy billlets dangane da gwajin ultrasonic kadai. Wannan ba almubazzaranci ba ne - wannan yana hana gazawar filin.
Zaɓi Abokin Kujerar Bawul ɗinku: Abubuwan Takaddun Ayyuka Uku
Kafin sanya hannu kan NDA, nemi waɗannan — sannan a tabbatar:
- Nemi rahotannin CMM guda uku na ƙarshe don makamancin lissafi na wurin zama. Kwatanta ainihin vs. maras tushe akan fuskar rufewa, diamita na matukin jirgi, da madaidaicin fuskar baya. Idan sun raba taƙaitaccen bayanai kawai, tafiya.
- Tambayi tsarin rahoton gwajin kayansu (MTR).. Neman gano gaskiya yana nufin kowane ɗigon zafi yana da alaƙa zuwa nazarin sinadarai, sakamako mai ƙarfi, da hotuna masu ƙima-ba kawai lambar takardar shaida ba.
- Yi nazarin bayanin iyawar su na GD&T. Shin suna inganta haƙƙin haƙƙoƙin matsayi? Shin za su iya riƙe bayanin martaba a cikin 0.008 mm a fadin baka 120°? Idan amsarsu ta ƙunshi "za mu gwada," ba su yi ba a baya.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki ta wannan hanyar yau da kullun-ba a matsayin keɓantawa ba, amma azaman daidaitaccen tsari. Kayan aikin su na ISO da ke Qingdao yana sarrafa komai daga AMS 5387 cobalt alloy nozzles zuwa tushe na famfo bakin karfe, tare da cikakkun takardu daga karɓar albarkatun ƙasa ta hanyar gwajin matsa lamba na ƙarshe.
Tunani Na Ƙarshe: Ana Auna Madaidaici a cikin Gujewa Kasawa
Wurin zama na bawul wanda ke zubewa a mashaya 200 ba ya kashe $87 a juzu'i. Yana kashe dala 12,000 a lokacin hutu don na'urar hakowa ta teku. Yana biyan $220,000 a cikin da'awar garanti don rundunar motocin injiniya. Yana tsada suna - lokacin da mai amfani na abokin cinikin ku ya zargi * alamar ku* don gazawar.
Dama bawul wurin zama factory yana kawar da waɗannan masu canji kafin guntu na farko ya tashi. Ba wai kawai sun haɗu da ƙayyadaddun bayanai ba-suna tsammanin yadda faɗaɗa thermal, guduma mai ruwa, da lodin cyclic za su yi hulɗa tare da lissafin su da ƙananan tsarin su. Wannan ba masana'anta ba ne. Canja wurin haɗari-an yi daidai.
