High-precision metal injection molding (MIM) imafuna zambiri osati makina chabe-imafuna fakitale yomwe imaganiza ngati injiniya, yoyesa ngati yowerengera bwino, ndikupereka ngati wothandizira kwambiri. Komabe ogula ambiri akufufuza a zitsulo jekeseni akamaumba fakitale kugunda khoma lomwelo: ogulitsa omwe amagulitsa zida za hardware koma alibe mphamvu zozama zazitsulo, kufufuza njira, kapena kutsimikizira kwachindunji-makamaka pazigawo zomwe zimagwira ntchito mopanikizika kwambiri, kuvala kwambiri, kapena malo owononga.
Tazionera tokha: pampu ya North America OEM idachedwa kukhazikitsidwa ndi milungu 11 chifukwa mnzake wa MIM sakanatha kugwira ± 0.02 mm pa AMS 5387 cobalt alloy nozzles. Wokasitomala wina adataya 63% ya zomwe zidayamba kupanga pambuyo poti ma microcracks adawonekera pambuyo pakusinthana - kutengera kupsinjika kwamphamvu kosagwirizana komanso mapu osatsimikizika obiriwira. Izi sizowopsa zongoyerekeza. Ndi zolephera zobwerezabwereza zomwe zimakhazikika pakugawikana: kugulitsa mashopu omwe amagulitsa kunja, kukonza nyumba zokhala ndi zero ufa wazitsulo, kapena ogulitsa "ntchito zonse" omwe amatsitsa masitepe a MIM osagawana nawo umwini.
Kulondola kwenikweni kwa MIM kumayamba kalekale osindikiza asanatseke
Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., timapanga jekeseni wazitsulo ngati njira yotseka-osati ntchito imodzi yokha. Malo athu ogwirizana ndi ISO ku Qingdao amaphatikiza chitukuko cha feedstock, kapangidwe ka zida za jakisoni, kutsekereza mbiri ya kinetics, vacuum sintering ndi mitengo yowongolera mpweya, komanso kumaliza komaliza kwa CNC - zonse pansi pa denga limodzi ndi protocol imodzi yabwino. Izi zikutanthauza kuti palibe ma handoffs, kuyerekeza kwa batch-to-batch, komanso kusasunthika pakukhazikika kwa magawo ngati ma silinda a pampu ya piston kapena matupi okakamiza a valve pomwe kupatuka kwa 0.015 mm kumayambitsa kulephera kugwira ntchito.
Timatsimikizira zinthu zonse - osati motsutsana ndi mapepala enieni, koma ndi kachulukidwe ka sintered, kagayidwe kake, ndi zokolola zolimba pakutentha kwa ntchito. Pa ma aloyi opangidwa ndi cobalt a T800, timayang'anira kujambula kwa kaboni panthawi yoyimba pogwiritsa ntchito ma probe a mpweya wam'mizere ndikuwunikanso mapu a EPMA pambuyo pokonza. Ngati ufa waiwisi ukuwonetsa kusintha kwa nickel 0.003%, timawapatula tisanadye chosakaniza. Izi si overkill. Ndimomwe timatsimikizira zokolola zoyamba 99.4% pazigawo zapampu za AMS 5387-ngakhale pa 120+ mayunitsi pa batch.
Kuphatikizika koyima si nkhani - ndi bajeti yanu yololera
Mafakitole ambiri a MIM amaima potumiza magawo a sintered. Sititero. Chifukwa timapanganso makina, kutenthetsa, ndikumaliza m'nyumba, timapanga kuwongolera kwa geometric mumayendedwe onse amtengo:
- CNC makina Zosasoweka zokhala ndi ma contouring amitundu yambiri-ogwira ma callout a GD&T ngati malo enieni Ø0.05 mm pazofunikira zadatum;
- Kuchepetsa kupsinjika kwa post-sinter kuyikidwa nthawi yake kuti zisasokonezeke m'nyumba zokhala ndi mipanda yopyapyala;
- Kumaliza pamwamba zofananira ndi ntchito-osati kukongola-monga Ra 0.2 µm galasi polish kwa nkhope zamadzimadzi osindikizira kapena mawonekedwe owongolera a grit-blast for thermal spray adhesion;
- Kutsata kwathunthu: Gawo lirilonse limakhala ndi ID yokhala ndi laser yolumikizidwa ndi satifiketi yake ya ufa, chipika cha sintering, lipoti la CMM, ndi data yomaliza yoyeserera.
Izi zimachotsa kulolerana komwe kumapha magwiridwe antchito pamakina a hydraulic. Pamene winch center shaft roller yanu iyenera kuzungulira pa 1,800 RPM pamene ili ndi 42 kN axial load, simungakwanitse ± 0.03 mm kuyenda pakati pa sintered OD ndi magazini yomaliza. Mufunika gulu limodzi lokhala ndi ma micron aliwonse.
Kutsimikizika kwapadziko lonse lapansi kumapambana ma lab nthawi zonse
Makasitomala amafunsa kuti: “Kodi wanu zitsulo jekeseni akamaumba fakitale Gwiritsani ntchito ma aloyi a cobalt-nickel popanda micro-porosity? Yankho lathu si lipoti - ndi lipoti loyesa kuchokera ku ntchito yamafuta amoyo. Mu Q3 2023, tidapereka mapulagi 217 a cobalt alloy kwa kontrakitala wakubowola kunyanja. Pambuyo pa miyezi ya 14 yowonekera mosalekeza kumatope odzaza ndi H₂S pa 150 ° C ndi 10,000 psi, mayunitsi a zero adawonetsa pitting kapena kutaya mphamvu yosindikiza. Chinsinsi? Osati giredi ya alloy yokha - inali mbiri yathu yotsatsira, yomwe idachepetsa kaboni wotsalira ndi 41% motsutsana ndi ma ramp wamba, ndipo nthawi yathu yokhazikika yosinthira pawindo laling'ono la cobalt.
Timakonzanso zomwe ena amanyalanyaza. Njira zodziwika bwino za MIM nthawi zambiri zimalephera pazithunzi zomwe sizili wamba, monga ulusi wamkati wozama kuposa 3 × awiri kapena mawonekedwe ochepera omwe amafunikira zida za ceramic. Tinapanga njira yosakanizidwa: mawonekedwe a sinter pafupi ndi ukonde, kenaka gwiritsani ntchito waya-EDM pa ulusi wa ulusi ndi kupukuta pang'ono poyendetsa mizu. Zotsatira zake? Ulusi womwe umadutsa kuyesa kwa torque 100%, osati kungoyang'ana gage/no-go.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. samagulitsa makina. Timapereka zida zachitsulo zolondola zomwe zidapangidwa kuti zizitsatira. Kaya mukuyesa mphuno ya AMS 5387 kapena kukulitsa mayunitsi 5,000/mwezi wa maziko a pampu yachitsulo chosapanga dzimbiri, mphamvu zathu zili pakuchita zinthu zocheperako—koma kuzichita ndi kubwerezabwereza zolembedwa, kuwongolera zitsulo, komanso kusalekerera zongoganiza. Kulondola sikusintha pamakina. Ndichiwerengero cha chisankho chilichonse chomwe chapangidwa - ndikutsimikiziridwa - gawo loyamba lisanatumizidwe.
