Paunonzwa 'powder metallurgy simbi', mufananidzo uripo unogona kunge uri weaya akakwana, epamusoro-soro mameseji akananga kunze kwerabho data sheet. Chokwadi chiri pauriri hwechitoro chinowanzoitika chakashata, paine kutengeserana pakati peiyo yakanaka microstructure uye hutsinye hwehupfumi hwekugadzira. Hazvisi zvekungotsikirira nekutsikirira; ndezvekutarisira zvinotarisirwa - zvese zvezvinhu uye zvemutengi.
Mukaha Uri Pakati peSpecial Sheet neShop Floor
Isu tinowanzo kuwana kubvunza, dzimwe nguva kuburikidza nevanoshamwaridzana senge Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), vane ruzivo rwakadzama mukukandira nekugadzira, vachibvunza kana chikamu chakaitwa parizvino kuburikidza nekudyara kwekudyara chinogona kuchinjirwa upfu metallurgy yemutengo kana kuita. Mubvunzo wekutanga ndewekuti hatimbofi? asi tinofanira here? Kune giya rakaomarara rinoda simba rekuneta kwakanyanya, PM inogona kuhwina. Asi kune yakapfava, yakakora-yakakomberedzwa dzimba, yechinyakare kukanda kana kunyange machining kubva kubhawa stock inowanzogara yakachipa, kunyanya pamavhoriyamu akaderera. Kukwezva kwepedyo-neti-chimiro kune simba, asi mutengo wekushandisa weiyo yakaoma giya kufa inogona kuve mhondi yeprojekiti.
Ndinoyeuka chirongwa chechikamu che hydraulic valve. Mufananidzo wacho wakatsanangura kusimba kwe7.4 g/cm3 ye upfu metallurgy simbi kuve nechokwadi chekudonha-kusimba. Isu takazviwana kuburikidza nekudzvanya kaviri uye sintering, asi iyo dimensional warpage post-sintering yaive yakashata. Chikamu chacho chaitaridzika chakanaka kubuda muchoto, asi zviyero zveCMM zvakataura imwe nyaya. Takapedza mavhiki tichigadzira pre-fomu dhizaini, tichigadzira mukukanganisa munzira yakapesana, iyo yainzwa kupikisa-intuitive. Yakashanda, asi yakawedzera 15% kunguva yekuvandudza. Ndiwo muripo wakavanzika — kudzokorora.
Apa ndipo paita machining partner isingataudzane. Kunyangwe iine yakanakisa PM maitiro, iwe kazhinji unoda yekupedzisira machining pass yekushivirira kwakakosha kana kupera kwepamusoro. Kambani yakaita seQSY, ine yavo CNC machining unyanzvi, hunova hwakakosha. Iwe haugone kungovapa chikamu chakatadza uye kutarisira zvishamiso; zvinhu zvinoita zvakasiyana pane simbi yakagadzirwa. Inowedzera abrasive uye inogona kuva ne porosity. Isu takadzidza kutsanangura sintered density uye kuoma pane iyo dhirowa yatinotumira kune machinist, kwete chete giredhi alloy. Tsamba yakaita senge ine yasara porosity, shandisa maturusi akapinza anoponesa munhu wese musoro.
Material Nuances Kupfuura Iron uye Carbon
Hwaro hwesimbi hupfu ingori canvas. Unyanzvi huri muzvinowedzerwa—zvipfuva zvakakanyiwa nemafuta. Kushandisa dhizaini-yakasungwa poda seDistaloy, ine nickel nemhangura pre-yakaiswa mukati mesimbi zvidimbu, inopa yakawanda homogeneous zvivakwa mushure mekunyunguduka zvichienzaniswa nekungosanganisa elemental poda. Asi zvinodhura. Pakushandisa kwepamusoro-soro, tinogona kuenda ne-pre-alloyed simbi poda ine molybdenum, tobva tawedzera mhangura negraphite kuti tiwane simba. Mamiriro ekunze anotsvedza anove akakosha - chidimbu chevacuum kana yakatsemuka ammonia kudzivirira decarburization. Ita izvo zvisiri izvo, uye simbi yako yakaoma haizoomarara.
Pane fungidziro yakajairika yekuti zvikamu zvePM hazvina kusimba. Kwete chokwadi kana zvakaitwa zvakanaka. Kuburikidza ne-nyaya yekuomesa maitiro senge carbonitriding, isu takawana kuomarara kwepamusoro kwe60 HRC pa upfu metallurgy simbi zvikamu zvekufambisa kwemotokari. Chinokosha kuwana density yakakwana kutanga. Chikamu chiri pa 6.8 g/cm3 chinenge chakabatana porosity inonyudza gasi rinopisa uye rinotungamira mukudzika kwekesi kusingaenderane. Isundire ku7.2 kana pamusoro, uye inoita senge chinhu chakasimba panguva yekupisa.
Kukundikana nyaya: takamboedza kugadzira diki, yakakwirira-yakasimba lever ine undercut. Dhizaini yaida kuti undercut iumbwe panguva yekudzvanya kudzivirira machining echipiri. Zvairatidza kungwara. Asi panguva yekubudiswa kubva pakufa, chikamu chakapfava, chakaumbwa asi chisati chanyungudika (chatinodaidza kuti chikamu chegirini), chakatsemuka nguva dzese. Takaedza kusanganisa kwakasiyana kwemafuta mumusanganiswa wehupfu kuti tivandudze kuyerera uye kuderedza kupokana, asi sheer mechanical stress yaive yakanyanya. Isu taifanira kugadzirisa zvakare chikamu, kurerutsa chimiro uye kugamuchira yakazotevera CNC oparesheni kugadzira iyo undercut. Yaive yemhando yepamusoro nyaya yekuwedzeredza izvo simba regirinhi raigona kubata. Chidzidzo chacho chaive chekugadzira maitiro, kwete kumanikidza maitiro kuti aenderane nedhizaini.
Kana PM Inosangana Nemamwe Maitirwo
Iyi inzvimbo inofadza. Makambani akadai QSY specialize in Investment casting uye shell mold casting. Saka PM inokwikwidza riini, uye inopindirana riini? Kune alloys ayo anozivikanwa zvakanyanya kuoma muchina, senge mamwe nickel-based superalloys, zvese PM uye kuisa mari yekukanda vanokwikwidza. PM inogona kupa yakanakisa zviyo chimiro. Nekudaro, kune zvikamu zvakakura kwazvo (funga pamusoro pe10 kg), kudzvanya kwakakura kunova kusagoneka, uye kukanda kuchiri kutonga. Isu takaona nzira dzakasanganiswa apo yakaoma PM pre-fomu inonyudzwa yobva yabatanidzwa kune yakakandwa kana gungano rakagadzirwa kuburikidza nebrazing kana welding. Iyo niche, asi inogadzirisa matambudziko chaiwo.
Pawebhusaiti yavo, tsngtaocnc.com, QSY inonyora zvinhu zvakaita secobalt-based uye nickel-based alloys. Ava ndivo vamiriri vepamusoro vePM zvakare, kunyanya kune zvikamu zvinoda kupisa kwakanyanya uye kupfeka zvivakwa, sezvigaro zvevharuvhu kana turbine blades. Nzira yehupfu inogona kuderedza tsvina yezvinhu kune aya anodhura alloys. Dambudziko nderekuvapisa pasina kuunza zvinosvibisa; kazhinji inoda masimbi akakwira-vacuum. Mutengo wenguva iyoyo yevira unobikwa mumutengo wechikamu. Saka iyo sarudzo matrix inogara ichidzoka kuhuwandu, kuoma, uye mutengo wezvinhu.
Ndinoona mabasa epashure-sintering achinakidza. Chikamu chakasiiwa hachina kupera. Inogona kuda saizi (yekupedzisira kudzvanyazve mufa), kurapwa kwechitsinga chepasi oxide uye chisimbiso chakapfava, kana akasiyana maplating kana ekubatisa maitiro. Takambova nechikamu chezvikamu zvakapasa bvunzo dzese dzemuchina asi takakundikana bvunzo yekupfapfaidza munyu yekudzivirira ngura. Iyo porosity, kunyangwe isina kubatana, yakanga ichiteya mushonga weplating, uyo wakazobuda kunze ndokukonzera mablister. Kugadzirisa kwaive nhanho yekumisikidza resin isati yaputirwa - iri nyore, yakaderera-inodhura maitiro isiri nguva dzose pane yakajairwa spec sheet asi yakakosha kune mamwe maapplication.
Iyo Economic Chokwadi uye Niche Masimba
Pakupera kwezuva, upfu metallurgy simbi harisi bara remashiripiti. Iyo nzira ine nzvimbo inotapira kwazvo. Yakakwira vhoriyamu (kuti amortize tooling), zvine mwero kusvika pakukwirira kuomarara (kukwidziridza mambure-chimiro mukana), uye chinhu chinobatsira kubva kuPM microstructure. Funga nezvemotokari injini sprockets, simba rekushandisa magiya, kana kukiya zvinhu. Kune imwe-kure prototypes kana yakaderera mavhoriyamu, iwe kazhinji zviri nani kubva machining kubva yakasimba, kunyange kana iri kutambisa. Iyo break-even point inyaya yenguva dzose yekukakavadzana.
Parinonyatso penya mune zvinhu zvakasanganiswa zvausingakwanise kusvika kumwe kumwe. Kugadzira chikamu chine gradient chimiro - toti, imwe mugumo wakapfuma mumhangura yezviri nani kupisa conductivity uye imwe magumo simbi yakajairwa yekusimba-zvinogoneka mune imwechete yekutsikisa-sinter kutenderera ine yakangwara kufa dhizaini uye upfu layering. Isu takaedza nega-yega yekuzora seizvi, tichishandisa porous iron chimiro chakapinzwa nepolima. Zvakashanda, asi kudzora kudzika kwekupinda nguva dzose raive dambudziko ratisina kumbogadzirisa zvizere kugadzirwa kwehuwandu.
Tichitarisa nzvimbo yakafara, kubatana pakati pevagadziri vePM uye machinists chaiwo ndiko kunopa chinhu chinoshanda. A firm like Iyo kambani Qingdao Qiangsenyuan Technology Co., Ltd. inomiririra kugona kudzika kwemvura kunoita kuti PM ishande kune chaiyo maapplication. Isu tinogadzira iyo yepedyo-net-shape isina chinhu ine inodzorwa zvinhu zvinhu; vanoiunza kune yayo yekupedzisira dimensional uye pamusoro pekupedzisira destiny. Iyo handoff inoda kunzwisisa kwakagovaniswa-kuziva kuti iyo sintered nzvimbo yakasiyana, kuziva kuti porosity ingangove papi, uye kugadzirisa mafeed, kumhanya, uye maturusi nzira zvinoenderana. Iyo nhaurirano, kupfuura chero chidimbu chimwe chete chemidziyo, ndiyo inoshandura hupfu hwesimbi kuita chikamu chemuchina chakavimbika.
