Kana mumwe munhu achinge abvunza nezve 'powder metallurgy types,' mhinduro yebhuku rekukurumidza inowanzova runyoro rwakatsvinda: press and sinter, metal jekiseni molding, inopisa isostatic pressing, zvichingodaro. Asi mukuita, kuti kupatsanurwa kunenge kwakanyanyisa kuchena. Iyo inorasikirwa neiyo nuance yekuti nei iwe uchisarudza imwe pamusoro peimwe kune yakatarwa chikamu, uye chaiyo-yepasirese kuregeredza kunouya neimwe neimwe. Ndakaona akawanda madhizaini achiuya uko sarudzo yaiita seyakavakirwa parondedzero yekatalog pane kunzwisisa kwakadzama kwezvipingamupinyi zvemaitiro. Ngatitaurei pamusoro pezvinorehwa nemhando idzi paunenge uchiedza kuita chikamu chinoshanda, chinogara, uye chisingaputi bhajeti.
Iyo Workhorse: Yakajairika Press uye Sinter
Apa ndipo panotangira vanhu vazhinji, uye nechikonzero chakanaka. Inodhura-inoshanda kune mavhoriyamu akakwirira ezvimiro zviri nyore. Iwe unotora hupfu hwesimbi, uzadze kufa, uitsikidze pasi pekumanikidzwa kwepamusoro, uye wozoiisa muchoto kuti ubatanidze zvimedu. Chinhu chikuru pano 'chiri nyore.' Undercuts? Kanganwa nezvazvo. Kusiyana kwakakura mukukora kwemadziro? Iwe urikukumbira dambudziko ne density gradients inozoratidza mukuita.
Takamboita purojekiti yechikamu chidiki chegiya. Mufananidzo wacho waitaridzika zvakanaka dzvanya uye sinter. Asi mutengi wacho aive nekakona, kakadzika kemhete yekuchengeta. Muchikamu chekupisa, chikamu chitete ichocho chakamonyoroka. Taifanira kudzoka ndokugadzira patsva mugero kuti uende kune imwe nzvimbo yakapfava, iyo yaizoda chinjo kuchikamu chokusangana. Ndomashoko madiki aya asiri mubhurocha. Iwo emakanika zvivakwa ane hunhu, asi iwo anisotropic - yakasimba perpendicular kune iyo press direction. Kana mutoro wako wekutakura usina kuenderana neizvozvo, unofanirwa kuziva.
Rudzi rwezvinhu pano rwakapamhama, kubva kusimbi-mhangura-kabhoni misanganiswa yezvikamu zvekutanga zvezvimiro kusvika kune yakaderera-alloy simbi. Asi kana iwe ukapinda mukukumbira zvinhu zvakaita sesimbi isina tsvina yemuchina wekutsikisa uye sinter chikamu, unofanirwa kungwarira. Iyo sintering atmosphere inoda kudzorwa zvakasimba kudzivirira chromium oxidation, iyo inowedzera mutengo. Dzimwe nguva, zvine musoro kutaura zvakasiyana upfu metallurgy nzira kana kunyange imwe nzira yekugadzira yakasiyana zvachose.
Kana Kuoma Kusina Kukurukurirana: Metal Injection Molding (MIM)
MIM ndiyo mhinduro kana chikamu chako chichiita senge jekiseni repurasitiki rakaumbwa chikamu asi richida kuve simbi. Funga zvimiro zvakaoma, zvidiki, zvakaoma kunzwisisa—mabhuraketi ane maburi akawanda pamakona asinganzwisisike, shaya dzemudziyo wekuvhiya, zvidimbu zvidiki zvekukiya. Iyo nzira inosanganisa yakapfava simbi poda nepolymer binder, jekiseni inoiumba, inosunga binder, uye inoipisa. Iwe unosvika pedyo-yakazara density uye yakanakisa chimiro kutendeka.
Kubata? Iyo yakareba, yakanyanya kutetepa process cheni. Debinding nhanho yakakosha uye inononoka; kurumidzisa, uye unowana makatsemuka kana matuzu. Iyo shrinkage panguva yekupedzisira sintering zvakare yakakosha uye inofanotaurwa, asi iwe unofanirwa kugadzira iyo mold tooling kuti ubhadhare iyo chaizvo. Ini ndinorangarira batch yezvikoni zvekubatanidza uko chishandiso chakachekwa zvichibva pane yekutanga, zvishoma kubva pazvinhu shrinkage factor. The whole run yakabuda a few percentage points undersize. Zvisingabatsiri. Chidzidzo chaive chekugara, kugara uchimhanyisa miedzo nehupfu chaiyo uye binder feedstock yaunoronga kushandisa kugadzira.
Mutengo-hungwaru, wakakwira pachikamu pane kudzvanya uye sinter, asi kune iyo chaiyo application, haikundike. Isu takatsvaga zvikamu zveMIM zvevatengi vanoda maumbirwo akaoma, epamusoro-soro apo machining kubva kune yakasimba angave achidhura zvakanyanya. Makambani akadai Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), nekudzika kwavo kwakadzika mukukandira uye kugadzira, kazhinji inopa mashandiro echipiri akakosha paMIM zvikamu, senge CNC yekumisikidza yakakosha datum pamusoro mushure mekuita sintering kurova kushivirira kusingagone kuvimbiswa neMIM maitiro ega.
Iyo High-Performance Arena: Kupisa Isostatic Kudzvanya (HIP) uye Beyond
Apa ndipo paunoenda kune zvikamu zvisingagone kuve nevoids. Ndinoreva, zero porosity. Aerospace turbine blades, premium medical implants, yakakosha downhole oiri & gasi zvinhu. HIP inobata pre-yakaumbwa poda compact (kazhinji yakavharirwa mumudziyo wakavharwa) kune yakanyanya tembiricha uye isostatic gasi kudzvanywa kubva kumativi ese panguva imwe chete. Mhedzisiro yacho izere dense, homogeneous microstructure.
Mutengo wacho wakakwirisa. Midziyo yacho inodhura zvisingaite kutenga nekumhanyisa. Haisi nzira yepamusoro-soro. Uri kuishandisa kune inonyanya kudiwa maapplication. Iyo inonakidza hybrid nzira iri kushandisa HIP kurapa hurema hwemukati mukukanda. Iyi inzvimbo iyo hunyanzvi hwezvinhu zvemupi hwakakosha. Semuyenzaniso, kushanda nemaaloyi akakosha senge nickel-based kana cobalt-yakavakirwa-yakajairika mubasa rekudyara rekudyara rinoitwa nemafemu akaita seQSY (unogona kuona huwandu hwavo hwezvinhu https://www.tsingtaocnc.com) - inoda ruzivo rwakakwana rwekuti hupfu hunoita sei panguva yeHIP cycle kuti udzivise kuumbwa kwechikamu chisingadikanwi.
Kupfuura HIP, kune nyika yese yemarudzi ari kusimukira uye akasarudzika. Spark Plasma Sintering yemhando yepamusoro ceramics uye macomposites. Kuwedzera kugadzirwa kwesimbi, iyo inonyanya kudzika-ne-layer upfu metallurgy. Asi neAM, uri kutengesa iyo isotropic pressure yeHIP yekushushikana kwekupisa kwelaser kana electron beam. Iyo se-yakavakwa pamusoro pekupedzisira uye yemukati yekushushikana mamiriro mhuka dzakasiyana zvachose, dzinowanzoda HIP post-process zvakadaro kuvhara micro-porosity. Ishoma mhando yakasarudzika uye imwe chishandiso chitsva mubhokisi rematurusi reupfu.
Nyaya ndiyo Mharidzo
Iwe haugone kuparadzanisa rudzi rwekuita kubva kune zvinhu. Kutaura nezve upfu metallurgy marudzi pasina kukurukura nezveupfu kwakafanana nekutaura nezvekubika pasina kutaura zvinosanganisa. Mvura atomized poda yakachipa, haina kurongeka muchimiro, uye yakanakira muchina uye sinter. Gas atomized poda idenderedzwa, inoyerera zvirinani kune MIM kana AM, asi inodhura. Iyo alloying nzira ine basa zvakare-uri kushandisa pre-alloyed poda kana kusanganisa elemental poda? Pre-alloyed inopa mamwe mayunifomu zvivakwa asi inodhura. Elemental kusanganiswa kunogona kutungamirira kune inhomogeneity kana isina kugadziriswa nemazvo.
Takanga tine nyaya yekutadza kuongorora pane sinter-hardening simbi chikamu. Yakarongedzerwa kushandiswa kwepamusoro-soro. Chikamu chakapfuura chekutanga QC asi chakakundikana nguva isati yakwana mumunda. Metallurgy yakaratidza nzvimbo dzenzvimbo dzakachengetwa austenite, iyo yakapfava. Chikonzero chikuru? Kusaenderana kusanganiswa kwegraphite (carbon) additive ne base iron poda usati wadzvanya. Panguva yekupisa, kabhoni haina kupararira zvakafanana, saka dzimwe nzvimbo hadzina kuoma zvakanaka. Kugadzirisa kwaive kuchinjisa kune pre-alloyed simbi poda ine kabhoni yatove mhinduro. Dambudziko rakagadziriswa, asi pakuwedzera kwe15% mutengo wezvinhu. Ndiyo mhando yekutengeserana-off inoitika zuva nezuva.
Ichi ndicho chikonzero kushandira pamwe neyekutanga kana chitoro chemuchina chinonzwisisa zvinhu padanho iri kwakakosha. Kambani ine makore makumi matatu mukukanda uye kugadzira, seQSY, inounza iyo metallurgical intuition. Vanogona kunge vasiri kugadzira hupfu, asi vanoziva maitiro ezvigadzirwa izvi pasi pekupisa uye kushushikana kubva pabasa ravo simbi, simbi, Stainless simbi, uye alloys anokosha. Irwo ruzivo rwekuyambuka-maitiro rwakakosha paunenge uchisarudza nzira yePM uye uchitarisira kuti chikamu chichaita sei post-sintering.
Convergence neTraditional Manufacturing
Mitsetse iri kudzima. Nzira yakajairika ikozvino ndeye upfu metallurgy pedo-net-shape process inoteverwa nechaiyo machining. Iwe unogona MIM kana kudzvanya nekupinza chikamu kusvika 95% yechimiro chayo chekupedzisira, wobva waunza CNC chigayo kuti muchina chaiwo bore, tambo, kana yakakosha yekuisa chisimbiso. Iyi nzira yakasanganiswa inokwidziridza mutengo uye kuita.
Ndakashanda pamiviri yevharuvhu uko kwakaumbwa mafungu makuru emukati kuburikidza neMIM, asi zviso zveflange nematambo etambo aive CNC akagadzirwa post-sintering. Yakanga iri nzira yega yekuwana iyo inodiwa pamusoro pekupedzisira uye geometric kushivirira pane iwo chaiwo maficha. Mutengesi anopa zvese PM hunyanzvi uye mukati-mumba machining, sekuratidzwa kweQSY kutarisisa kwegomba mold kukanda, kukanda mari, uye CNC machining, yakamisikidzwa zvakanaka kune iyi mhando yeyakasanganiswa yekugadzira mhinduro. Inogadzirisa kutaurirana uye kuzvidavirira.
Sarudzo yerudzi rwePM, saka, haisi sarudzo yega. Ndiro danho rekutanga muchirongwa chekugadzira. Iwe unofanirwa kubvunza: Ndeapi mashandiro echipiri anozodiwa? Chikamu chichapedzwa sei? Coated? Iyo sintering process inobata iyo yepamusoro chemistry, iyo inogona kukanganisa plating adhesion kana pendi kuita. Zvose zvakabatana. Kuzvifunga sekungotora 'rudzi' kubva mumenyu ndiko kukanganisa kukuru kwaungaite. Zviri zveinjiniya cheni yekugovera uye process ketani iyo inopa inoshanda chikamu. Hupfu huchangotanga.
