Kupanga a kupanga fakitale ya powder metallurgy sizokhudza kukopera template. Ndi za kuthetsa zopinga zenizeni za uinjiniya-kupotoza kwamafuta mu sintering, kachulukidwe ma geometries ovuta, kapena kusasinthika kwa batch-to-batch pogwira ma aloyi a cobalt-nickel ngati AMS 5387 kapena T800. Tapanga ndi kukhathamiritsa kupitilira mizere 12 ya ufa wa zitsulo-zophatikiza zopangira makasitomala amakampani kuyambira 2016. Aliyense adayamba ndi funso lomwelo: *Kodi mzerewu uyenera kupereka chiyani, osati kungotulutsa?*
Yambani ndi cholinga chogwira ntchito, osati njira yoyendetsera
Mafakitole ambiri amalephera pa Gawo 1: amajambula zida asanafotokozere malire a magwiridwe antchito. Malo opangira ma valve oponderezedwa a ma hydraulic system safuna "kuchulukana" - amafunikira kachulukidwe kozungulira mkati mwa ± 0.02 g/cm³ kudutsa 120 mm bore. Maziko a mpope amafunikira zokolola zopondereza ≥1,420 MPa pambuyo pa HIP-koma m'dera lonyamula katundu, osati matumba okwera. Kusiyanitsa kumeneko kumasintha chilichonse: gawo loyang'ana pagawo lobiriwira lobiriwira, kuchuluka kwa ma sintering atmosphere, komanso ngati kutentha kwa isostatic kumalowa m'malo kapena kumawonjezera sintering wamba.
Nthawi ina tidakonzanso ng'anjo yonse ya kasitomala chifukwa kapangidwe kake koyambirira kamagwiritsa ntchito sintering ya nayitrogeni popanga milomo ya cobalt alloy. Kusagwirizana kwa kukula kwa kutentha kudapangitsa kuti pakhosi pamphuno pakhale kung'ambika pang'ono—malo ovuta kwambiri a 0.3 mm. Kusintha kwa vacuum sintering ndi kuwongolera kwa argon backfill kunachepetsa zotsalira kuchokera 22% mpaka 1.7%. Kukonzekera sikunali kowonjezera. Zinali zofananira kuwongolera mlengalenga ndi geometry yogwira ntchito.
Kuphatikizika koyima kumapambana kutulutsa modula-pamene kumapangidwira bwino
Ogulitsa ena amagulitsa "powder metallurgy turnkey solutions" ngati ma cell omwe adayikidwa kale: atomizer → press → sinter ng'anjo → siteshoni ya CMM. Koma mtunduwo umanyalanyaza momwe ma hybrid ma hybrid workflows amachitira. Ganizirani za nyumba ya silinda ya pampu ya piston: spline yake yamkati iyenera kupangidwa * pambuyo * sintering kuti isungike kukhazikika - koma chokwera chakunja chiyenera kukhala pansi * pamaso pa * HIP kuti zisasokonezeke chifukwa cha kusintha.
Ku QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., timayendetsa mizere yopangira ndalama komanso zitsulo pansi pa denga limodzi lovomerezeka ndi ISO - osati kuti lithandizire, koma kuwongolera mbiri yakale. Chigawo cha T800 cha alloy chikasintha kuchoka ku chobiriwira chobiriwira kupita kugawo lomaliza, kapangidwe kake kambewu kake kamasinthika m'magawo atatu: kutenthedwa kwa binder (350-600 ° C), kufalikira kwamphamvu (900-1,150 ° C), ndi kutentha kwamadzi (1,280-1,350 ° C). Malo athu opangira makina a CNC amawunikidwa kuti alipire njira zotsalira za kupsinjika komwe kumayesedwa *in situ* panthawi yoziziritsa - data yomwe timayika mwachindunji pakupanga zida.
Izi sizongoyerekeza. Ndichifukwa chake magawo athu a pampu a AMS 5387 cobalt 6 amakwaniritsa kutsata kwa GD&T Zone ± 0.008 mm pamalo osindikizira ovuta-popanda kukonzanso makina a HIP.
Ubwino suwunikiridwa. Amapangidwa kukhala machitidwe akuthupi
Mapulani ambiri amtundu wa zitsulo za ufa amayesa kuyang'ana ngati chipata: kupita / kulephera pakuwunika komaliza kwa CMM. Ndizo mochedwa kwambiri. Kusiyanasiyana kwa kachulukidwe kumayambira pakuphatikiza ufa. Oxygen yomwe ili pamwamba pa 350 ppm mu cobalt-nickel pre-alloyed powders imayambitsa mapangidwe a brittle intermetallic gawo panthawi ya sintering-osawoneka ndi maso kapena kuyesa kuuma kokhazikika.
Yankho lathu likuphatikiza chitsimikiziro pa mfundo zinayi zomwe sitingakambirane:
- Chiphaso chaufa: Kusanthula kwa OES + LECO pagawo lililonse; kutsata kotsimikizika kwa ASTM B243-22
- Kutsimikizira mphamvu zobiriwira: Uniaxial compression test pama compact 5 oyamba pa shift-osati kachulukidwe kokha
- Sintering mbiri audit: Mapu a nthawi yeniyeni a thermocouple mkati mwa ng'anjo yamoto, osungidwa pa batch iliyonse
- Kutulutsidwa kwa Microstructure: SEM-EDS pazigawo zotsatizana za zitsanzo za nsembe kuchokera pamtundu uliwonse wa HIP
Sitikuvomereza "zikalata zakuthupi." Timatsimikizira kugawa kwa oxygen, nayitrogeni, kaboni, ndi tinthu ting'onoting'ono *tokha*. Chifukwa pamene chodzigudubuza cha winch center shaft chikalephera kuzungulira 8,200 m'malo mwa 12,000, chomwe chimayambitsa sichimapanga kaŵirikaŵiri - ndi chemistry ya ufa yophimbidwa ndi kuwerengeka kwapakati.
Kupanga bwino kwa fakitale ya ufa zitsulo kumadalira zomwe mwasiya
Kupanga zowonda mu PM sikungokhudza kudula mutu. Ndi za kuchotsa zisankho latency. Makasitomala m'modzi adachepetsa nthawi yotsogolera ndi 41% osati powonjezera makina osindikizira-koma pochotsa mfundo zitatu zotsogola pakati pa prep ufa, kukonza compaction, ndi kasamalidwe ka mizere ya sintering. Dongosolo lawo la ERP silinathe kuthana ndi masinthidwe ofunikira pamene dongosolo la hydraulic valve lamtengo wapatali lidafika pakati pa batch. Tinalowa m'malo mwake ndi bolodi ya Kanban yolumikizidwa ndi kupezeka kwa ng'anjo yanthawi yeniyeni - ndikumanga manambala a ufa ku malangizo a digito owoneka pa piritsi lililonse.
Chizindikiro champhamvu kwambiri cha okhwima kupanga fakitale ya powder metallurgy si volume yotulutsa. Ndimomwe umasinthira mwachangu ku kusintha kwa katchulidwe ka aloyi, kuyimba kwatsopano kwa GD&T, kapena njira yosinthira kutentha - zonse popanda kukonzanso ma protocol oyendera. Liwiro limenelo limachokera ku maulalo olembedwa, obwerezabwereza: pakati pa ufa wa ufa ndi zitsanzo za mphamvu zobiriwira, pakati pa nthawi ya sintering ndi mapu omaliza a porosity, pakati pa maulendo othamanga a HIP ndi moyo wotopa.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. imapanga maulalo amenewo—osati ngati zitsanzo zongoyerekeza, koma monga magawo amoyo munjira yathu yopangira zinthu. Timagawana nawo momveka bwino pakuwunika kwa uinjiniya chifukwa kupanga sizovuta. Ndilo gawo loyamba la ntchito.
