Kana vanhu vazhinji vakanzwa 'powder metallurgy industry', vanofananidzira yakatwasuka-uye-sint er process-blend powder, press it, heat it, yaitwa. Ndiyo vhezheni yebhuku, uye injodzi yakawandisa inotungamira kune akawanda subpar zvikamu uye mainjiniya akavhiringidzika. Icho chokwadi chakashata, chakanyanya nuanced, uye kutaura chokwadi, uko iko iko kuinjiniya kunoitika. Hazvisi zvekungogadzira chimiro; ndezvekutonga porosity, kudzora miganhu yezviyo post-sintering, uye kunzwisisa maitiro alloying paanotanga seguruva. Ndakaona akawanda madhizaini achitadza nekuti vakabata PM seyakachipa inotsiva machining, vachiregeredza maitiro ayo akasiyana.
Iyo Alloy Conundrum uye Density Realities
Ngatikurukurei zvekushandisa. Vimbiso yeakakosha alloys senge nickel-based kana cobalt-based ari muupfu fomu yakakura pakupfeka uye yakakwirira-temp application. Asi mukaha pakati pevimbiso nechikamu wakakura. Iwe haugone kungotora yakagadziriswa alloy spec uye kutarisira kuti vhezheni yehupfu irove nhamba dzakafanana. Iyo pre-alloyed poda inopesana neye elemental musanganiswa nzira isarudzo yakakosha inoraira zvese kubva pakudzikama kwedimensional panguva yekunyura kusvika kune yekupedzisira kuneta simba. Nekutanga kusanganiswa, iwe uri kubhengi pakupararira kuve wakakwana panguva yekudziya kutenderera-hazviwanzo kudaro, zvichitungamira kune heterogeneous microstructures kana kutenderera kwacho kusina kunaka.
Izvi zvinobatanidza zvakananga kune density. Kuvavarira kuva pedyo-yakazara density kazhinji kunoreva kufamba kupfuura standard sintering. Tiri kutaura nezvesimbi jekiseni molding (MIM) kana inopisa isostatic pressing (HIP). Asi nhanho imwe neimwe kumusoro muhuremu hunouya nekusvetuka kwemutengo uye zvipingamupinyi zvejometri. Semuenzaniso, HIP inonakidza pakubvisa yakasara porosity mune yakaoma upfu metallurgy chikamu, iti turbine blade prototype, asi haisi mushonga-zvese kune isina kugadzirwa sintering run. Iyo porosity inofanirwa kuvharwa uye yakasarudzika kuti HIP iporese zvinobudirira; yakabatana pamusoro porosity haigone kugadziriswa.
Musoro wemusoro unoshanda? Sinter kuomesa simbi. Vanokutendera kuti uwane simba repamusoro rakananga kunze kwechoto chinopisa, uchipfuura chechipiri kupisa kurapwa. Inonzwika zvakakwana. Asi mwero wekutonhodza mubhandi rako rekunyunguduka unova yakakosha process parameter. Kunyanya kunonoka, uye iwe hauwane iyo martensitic shanduko; kukurumidza, uye unogona kukanganisa kukanganisa. Ndapedza mavhiki ndichitora gasi kuyerera uye kumhanya kwebhandi kwechikamu chiri nyore cheflange, kungoona kuti shanduko shoma muchikamu chehuwandu kubva kune dhizaini tweak yakakanda zvese zvakare. Icho chiito chenguva dzose chekuenzanisa.
Iko PM Vanosangana neMachining: Iyo Isingadzivisike Handshake
Inenge isina kuoma PM chikamu chiri zvechokwadi net-chimiro. Kunyangwe iine yakanakisa maturusi uye maitiro ekudzora, iwe unozoda yechipiri mashandiro. Apa ndipo pane hukama pakati a upfu metallurgy nyanzvi uye machinist akajeka anotsoropodza. Iwe haugone kudhiza chikamu chePM sekunge ungagadzira chivharo chakagadzirwa. Iyo yakasara porosity ibrasive inodya midziyo yekucheka. Izvo zvinokanganisawo kupera kwepamusoro uye simba reshinda.
Iri ndiro synergy yandakaona yaitwa zvakanaka. Tora kambani yakafanana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Nemashure avo akadzama mukudyara kwekudyara uye CNC machining, vanowana maitiro enyama. Kana chikamu chePM, taura simbi isina simbi yevharuvhu inoda chaiyo tambo yechiteshi, inobva pane sinter, ivo vanoziva kuibata. Vaizonzwisisa kuti kuchera munzvimbo yakasvibiswa kunoda chaiwo maturusi ejometri uye mafidhi kudzivirira kuputsa mupendero. Harisi basa rokugadzira; ndiko kuenderera mberi kwekuita kwekusimbisa. Chiitiko chavo neakakosha alloys mukukanda inoshandura kune intuition yekubata zvinhu zvakafanana mune sintered fomu. Unogona kutarisa maitiro avo pane yavo saiti pa https://www.tsingtaocnc.com-maitiro avo akabatanidzwa kubva pakuumbwa kuenda kumachina ndizvo chaizvo zvinodikanwa nePM zvikamu.
Kutadza kwakanyanya kwandakaona kwaive apo PM uye machining zvakamiswa. Mumwe mugadziri akadudza madziro akatetepa padivi pehomwe yakagadzirwa pane imwe ferrous PM part. Chitoro chePM chakaita kuti zvifungidzire, asi madziro angangoita 85% density. Mugadziri wemuchina, aishandiswa kuita simbi yakasimba, akatora chiyero chekucheka. Rusvingo rwacho rwakadengenyeka, chimbo chacho chakaita ruzha, uye chivako chaiva neburi chakabvarukaruka. Tinodzidzei? DFM (Design for Manufacture) yePM inofanira kusanganisira machining strategy. Dzimwe nguva, zviri nani kugadzira gadziriso usati waita sinter, kana kutsanangura densification yenzvimbo.
Iyo Yekushandisa Musungo uye Yakanaka Yakakwana Kushivirira
Tooling ndiwo moyo wepress-and-sinter, uye mutengo wakakura wepamberi. Muedzo ndewekugadzira iyo yakawanda-level chikamu kuti uwedzere maitiro, cramming mune ese marudzi ezvimiro. Asi nhanho imwe neimwe, yega yega undercut, inowedzera kuoma kwechishandiso, kupfeka, uye njodzi ye density gradients. Ndakawira mumusungo uyu kare. Isu takagadzira giya rinopenya rine yakasanganiswa sintered clutch mbiri. Chishandiso ichi chaive chinotyisa, chaida matanda akatetepa epakati akakotama, zvichikonzera kusapindirana kwekuzadza mu clutch splines. Mapatsi acho aifanira kudhindwa asi akaitwa zvisina kunaka nekuda kwekusiyana uku.
Dzimwe nguva, mutambo wakangwara ndewekuita yakapusa, yakasimba PM preform uye muchina iwo akaomarara maficha. Inonzwa senge chibvumirano, asi kazhinji inovimbika uye inodhura-inoshanda muhuwandu. Kushivirira ndeimwe nzvimbo yezvishuvo zvisiri izvo. Kubata ± 0.025mm pane sintered dhayamita pabatch iri kubvunza dambudziko uye 100% kuongororwa. Iyo indasitiri ine makirasi ekushivirira akajairwa nechikonzero. Kunzwisisa nguva yekushandisa Kirasi X (yakanyanya kurongeka) maringe neKirasi Y, uye kutaura izvozvo kumutengi, chikamu chakakosha chebasa. Zviri pamusoro pekugadzirisa zvinotarisirwa neicho chokwadi chekugadzirisa hupfu uye kuiona ichipfava uye ichinyura muchoto.
Uye shrinkage haina mutsara. Inogona kusiyanisa ne compacting direction (anisotropic), iyo inotyisa kwenguva refu, yakatetepa zvikamu. Isu takamboita nhevedzano yeactuator levers. Vakasangana nehurefu nehupamhi specs mushure mekunyungudika, asi twist (chimiro chewarp) chaive chisingaenderane. Chikonzero chikuru? Kuchinja kudiki kwehupfu kunozadza kureba mufa, izvo zvakachinja kutanga kwegirinhi density kugovera. Kuigadzirisa kwaida kugadziridzwa patsva kwechikafu cheshangu system, kwete kungogadzirisa choto.
Iyo Green State: Iko Zvese Zvinosarudzwa
Iro gamba risina kusimba-kana kuti chinyararire saboteur-yePM ndiyo yakasvibira chikamu. Ndiyo yakatsikirirwa-asi-isina kupindira compact. Kuvimbika kwawo ndizvo zvese. Rudzi rwebvudzi rwakatsemuka kana kuti laminations kubva kune zvisina kufanira ejection hazvizopore mukupisa; vachatonyanya kuipa. Kubata zvikamu zvakasvibirira kunoda kubatwa kwechiedza. Ndakaona mapallet ese ezvikamu akaderedzwa kuita marara nekuti nyanzvi nyowani akaabata senge ma blanks emuchina.
Simba reGreen inzvimbo yaunotsanangura ine mabhainda uye mafuta ekuzora. Asi kutengeserana. Mafuta akawanda anorerutsira ejection uye anonatsiridza density kufanana, asi inosiya zvimwe zvakasara zvichitsva panguva yekupisa, izvo zvinogona kukanganisa kutonga kabhoni mumasimbi. Iri idambudziko rekemesitiri rakavanza seyemakanika. Kune kambani yakadai QSY, vane hunyanzvi mugoko uye kukanda mari kutenderera kune mold zvinhu uye kutsva kutenderera, iyi sintering mamiriro uye inodziya debinding chikamu chingave chinozivikanwa nyika. Misimboti yekudzora kupisa kwekuora kwakafanana, kungoiswa kune poda compact pachinzvimbo chewakisi pateni.
Kuongorora zvikamu zvakasvibirira inyanzvi. Iwe haugone kushandisa nzira dzakawanda dzisiri dzekuparadza. Zvinowanzouya pasi pekuongororwa kwekuona pasi pechiedza chakanaka uye kunzwa kwekuti chikamu chinofanira kunzwika sei kana chakareruka. Iyo yakaderera-tech asi yakakosha. Chikamu chakasvibira chakakanganiswa chikara; unenge uchingopedza simba kuzviitira.
Kutarisira Mberi: Haisi Yechigadzirwa Maitiro
Dambudziko guru kune poda metallurgy industry iri kutorwa sechinhu chinotengeswa. Kana zviri zvekungotsikirira simbi dzakachipa, basa iroro rinozopedzisira raenda kune yakaderera-mutengo bhidhi. Ramangwana riri mune zvepamberi zvinhu, zvakaomarara kushanda kubatanidzwa, uye hybrid kugadzira. Funga nezvePM sechikuva chekugadzira zvinhu. Iwe unogona kugadzira macomposites-senge aruminiyamu yakasimbiswa nesilicon carbide zvimedu-zvisingagone kunyungudika-kanda. Kana kuti inoshanda giredhi zvinhu uko kuumbwa kunochinja mukati mechikamu.
Iko kubatanidzwa nekuwedzera kwekugadzira kunewo kudzima mitsetse. Binder jetting yesimbi iri, papakati payo, a upfu metallurgy process. Matambudziko ekutadza, kukanganisa, uye microstructural kudzora zvese zviripo, zvinowedzerwa neanowanzo kudzika girini density. Ndiyo mhuri imwe chete yematambudziko, chete neine nzira yakasiyana yekuumba. Apa ndipo panowanikwa ruzivo rwakadzama kubva kune yechinyakare PM inove yakakosha.
Saka, haisi indasitiri yekunyura kwezuva. Zviri kuitika. Asi zvinoda shanduko kubva pakungove mupi wechikamu kuenda kukuva nyanzvi yekugadzira zvinhu uye kugadzira. Iwe unofanirwa kutungamira dhizaini, kuve wega cheni yese kubva pahupfu kusvika kune yakapedzwa muchina chikamu, uye kuve wakatendeseka zvine hutsinye nezve kugona kwemaitiro uye miganhu. Ndiwo mafambiro aunofamba kupfuura kuve chitoro chevatori venhau uye wova akakosha engineering shamwari. Makambani anowana izvi, iwo ane machining uye zvinhu zvesainzi chops kutsigira PM maitiro, ndiwo acharamba aripo kwemakore makumi matatu anotevera.
