Paunonzwa 'simbi jekiseni rekuumba Stainless simbi', mufananidzo wepakarepo kazhinji wakakwana, net-shape chishamiso chikamu. Ndiyo nzvimbo yekutengesa. Chokwadi, kunyanya nemagiredhi senge 316L kana 17-4 PH, inguva dzose nhaurirano pakati pejometry, zvivakwa, uye mutengo. Vazhinji vanofungidzira kuti ingori jekiseni repurasitiki kuumba nehupfu hwesimbi-ndipo panowanikwa pfungwa huru yekutanga. Matanho ekubvisa uye ekutadza ndipo panogara kana kufa nzira chaiyo, uye uko kukundikana kwakawanda, kana kuchizoitika, kunoitika chinyararire.
Iko Kukwezva uye Chokwadi cheMIM cheStainless
Kukwidza kwacho kuri pachena. Iwe unosvika pakugadzira yakaoma, diki-kusvika-yepakati saizi simbi isina simbi ine ruzivo rwakanaka uye yakashoreka michina zvivakwa, kazhinji kubvisa yechipiri machining. Funga shaya dzemudziyo wekuvhiya, zvikamu zvepfuti, kana zvisungiso zvakaoma kunzwisisa. Asi 'decent' ndiro izwi rinoshanda. Haisi kugadzirwa kana kugadzirwa. Iyo microstructure kubva kuMIM yakasiyana-siyana-yakawanda homogeneous, asi ine hunhu hwakasara porosity. Kune akawanda maapplication, akanyatsokodzera, asi haugone kungotaura 'stainless simbi' padhirowa uye uchifunga kuti MIM ndeyekudonhedza-in kutsiva. Sarudzo yechipfuwo, hupfu particle saizi kugovera, uye sintering mhepo (hydrogen, argon, vacuum) inodudza yakananga yekupedzisira kushora uye simba. Ndakaona mapurojekiti achimira nekuti iyo fungidziro inodaidzira kuti ASTM F138 (implant-giredhi 316L) corrosion performance asi chitoro chaimhanyisa kutenderera kwemaindasitiri, zvichikonzera kunaya kwecarbide kusingagamuchirwe pamiganhu yezviyo.
Imwe yemusoro chaiyo isina tsvina muMIM inodzora kabhoni. Panguva yekuvhara, kana kutenderera kwekushisa kusina kunyatsogadziriswa, kabhoni inogona kusiiwa, iyo musimbi isina tsvina inogona kutungamira kukugadzirwa kwechromium carbide, kubira matrix echromium nekuuraya corrosion resistance. Iko kutadza chinyararire-chikamu chinotaridzika zvakanaka, chinopfuudza cheki chekisheni, asi chinokundikana mumunda. Unoda mutengesi anonzwisisa simbi, kwete kungoumba. Apa ndipo panotangira muinvestment casting, seizvo zvaunoona pafemu yakadai Qingdao Qiangsenyuan Technology Co., Ltd.(QSY), inova yakakosha. Vanga vachigadzira simbi chaiyo kwemakumi emakore. Nepo musimboti wavo uri shell mold casting uye Investment casting, iyo yakadzika mukugadzirwa kwesimbi-kuziva kuti kupisa kunobata sei simbi isina tsvina uye special alloys-ihwo hunyanzvi hwekutanga hunodudzira zvakanaka kutarisira mhando muMIM maitiro. Ndezvekudzora shanduko yechikamu.
Imwe tariso inoshanda: dimensional predictability. Shrinkage yakaiswa mukati, asi haisi nguva dzose isotropic. Chimiro chakareba, chitete chinogona kuderera zvakasiyana pane hubhu gobvu. Isu takambogadzira prototype yekiyi michina - diki isina tsvina ine buri repini chairo. Kuumbwa kwacho kwaive kusina mhosva, asi mushure mekuita, gomba raive elliptical, kwete rakatenderera, nekuda kwekusava neyunifomu density muchikamu chegirini. Kugadzirisa kwanga kusiri muchoto chekupisa; yakanga yadzokera mukugadzira mold uye gating, kuve nechokwadi chekuwedzera yunifomu yehupfu inoyerera panguva yejekiseni. Urwu ndirwo rudzi rwekudzokorora, maoko-pakugadzirisa matambudziko anoparadzanisa mutengesi wezvikamu kubva kune wekugadzira mudiwa.
Sintering: The Make-or-Break Phase
Uyu ndiwo moyo wayo. Iyo yakaumbwa 'brown' chikamu chisina kusimba, chizere nepolymer binder. Debinding inobvisa iyo binder zvishoma nezvishoma, nekuchenjera, kudzivirira chikamu kudonha kana kugadzira kuremara. Ipapo sintering inosanganisa zvidimbu zvesimbi. Kune isina tsvina, mamiriro ekunze akakosha. Mhepo yakachena yehydrogen inogona kuve yakanakisa kudzikisa epamusoro okisidhi uye kuwana yakakwira density, asi injodzi yekushandisa uye mutengo. Vacuum sintering ine partial pressure ye argon inonyanya kuwanda. Iyo tembiricha profile- remp rates, peak tembiricha (kazhinji ingori pazasi peiyo solidus mutsara), uye kubata nguva-inodzora zvakananga density yekupedzisira.
Kuvavarira pedyo-theoretical density (taura, 96%+) zvakajairika, asi iko kutengeserana-kure. Higher density kazhinji inoreva zvirinani ductility uye corrosion resistance, asiwo kuderera kukuru uye nengozi yakawanda yekumisikidza kana kukanganisa. Dzimwe nguva, kune chikamu chakanyatsorongeka chisina kubuda mvura, kubvuma 93-94% density isarudzo inodhura / yekuita. Ini ndinorangarira bracket yakagadzirwa kubva ku17-4 PH uko mutengi akasimbirira pane yakanyanya density. Isu takazviwana, asi chikamu chakamonyoroka zvishoma, chichida coining (saizi) oparesheni mufa mushure mekuita sintering, iyo yakawedzera mutengo. Zvakanga zvakakodzera here? Pamwe kwete, asi iyo spec sheet yakaida. Inosimbisa kukosha kwekutanga nhaurirano pakati pekugadzira nekugadzira.
Post-sintering, zvikamu zvinowanzoda kupedzisa. Kudonha kwekubvisa, kupfurwa kudongorera kuzorodza kushushikana, kana kupenya CNC machining kune akakosha maficha. Apa ndipo pane mutengesi ane integrated CNC machining kugona, seQSY, kune mukana. Vanogona kubata cheni yese yeukoshi-MIM, sintering, uyezve kunyatsogadzira kiyi yedhamu yepamusoro kana shinda-pasi pedenga rimwe. Inogadzirisa zvinhu uye, zvakanyanya kukosha, inovimbisa kuzvidavirira. Kana chimiro chemuchina chakadzimwa, hauwane gakava pakati peimba yeMIM nechitoro chemuchina vachipomerana mhosva.
Material Nuances Kupfuura 316L
Nepo 316L iri bhiza rekushanda, mamwe mamakisi asina tsvina uye alloys ari kuwedzera kushandiswa. 17-4 PH yakakurumbira nekuti inogona kunaya yakaomeswa mushure mekunyura. Asi heino nuance: iyo sintering kutenderera kwe17-4 PH inofanirwa kugadzirwa kudzivirira kuumba delta ferrite, iyo inogona kukanganisa neinozotevera yekuchembera uye kuoma kwekupedzisira. Iwe haugone kushandisa iyo yakafanana profil yevira se316L.
Ipapo kune zvimwe zvinhu zvekunze. Ndakabatikana nemapurojekiti ndichishandisa MIM ye cobalt-based alloys (seCoCrMo yemazino anodyara) uye nickel-based alloys. Idzi mhuka dzakasiyana zvachose. Hupfu hunodhura, tembiricha yekupisa yakakwira, uye mahwindo ekugadzira ari madiki. Kusvibiswa kunetseka kukuru. Iwe haugone kumhanyisa nickel alloy mushure mebatch isina tsvina isina kunyatso kuchenesa uye kuchenesa. Iyi haisi nzira yechitoro chebasa; inoda mitsara yakatsaurirwa uye yakakomba process control protocol. Kambani ine nhoroondo mu special alloys, zvakare sezvinoratidzwa muhukuru hweQSY, inowanzova nechirango chekutanga chebasa rakadaro, kunyange kana vari kuishandisa kune imwe nzira yekugadzira yakasiyana seMIM.
Kusarudzwa kwezvinhu kunobatanawo mu feedstock. Musanganiswa webhainda/upfu unofanira kunge wakafanana. Kusadya zvakanaka kwekudya kunogona kutungamirira ku'binder pooling' panguva yejekiseni, zvichiita kuti nzvimbo dzine hupfu hwakasiyana-siyana, izvo zvinozopisa zvisina kuenzana. Icho chikanganiso chisingagoneki kugadzirisa gare gare. Sourcing inowirirana, yepamusoro-soro feedstock hafu yehondo.
Kana MIM Isiri Mhinduro
Zvakakosha kuziva miganhu. MIM haina kunaka kune zvikamu zvakakura kwazvo (kazhinji, funga pasi pe250 gramu yesimbi). Izvo hazvina kunaka kune zvikamu zvine muchinjiko wakakora zvakanyanya, sezvo zvichigona kubata binder uye sinter zvisina kunaka mukati. Izvo zvakare hazvina kunaka kana iwe uchida iyo yakakwana yepamusoro mekiniki zvivakwa-yeyakakosha aerospace bolt iri pasi pekugera yakakwirira, iwe unenge uchiri kutarisa kune machining kubva kubhawa stock.
Ndakatungamira vatengi kune mamwe maitiro. Dzimwe nguva, kune imwe nhanho yakaoma isina tsvina, Investment casting inonyanya hupfumi, kunyanya pamavhoriyamu akaderera kana kana madziro akakora achisiyana. Zvishandiso (wax molds) zvakachipa pane simbi yakaoma MIM molds. Dzimwe nguva, kana chikamu chacho chiri nyore asi chiri chidiki, kunyatsodhinda uye ipapo kubhuroka kana welding inogona kuhwina. Iyo sarudzo matrix inosanganisira vhoriyamu, geometry, zvinhu specs, uye bhajeti. Mushandi akanaka wekugadzira anofanirwa kukwanisa kuita hurukuro iyoyo zvine mutsindo, kwete kungosundira maitiro avo ekutanga. Icho chokwadi chekuti kambani yakaita seQSY inopa nzira dzakawanda-casting, Machining, uye nekuwedzera, kungangove kunzwisiswa kwemaitiro akaita seMIM-inoratidza kuti vanogona kupa rudzi irworwo rwekubvunzana maitiro pane kuita saizi imwe-inokodzera-vose.
Kuedza kumwe kwakakundikana kunouya mupfungwa kwaive mutengi aida chubhu yakatetepa-yakakomberedzwa neyakaomesesa yemukati retisi zvimiro-akakwana MIM mumiriri pabepa. Isu takazvifananidzira, asi nhengo dzelattice dzaive dzakanaka zvekuti panguva yekuvhara, dzaiita sag. Isu takagadzirisa zvimiro zvekutsigira muforoma, yakagadziriswa debinding mitengo, asi goho raive rakashata. Basa racho rakamiswa. Yakanga iri geometry yaisundira kupfuura miganhu yazvino yetekinoroji yeiyo chaiyo zvinhu. Iwe unofanirwa kuziva nguva yekufamba.
Kutarisa kune Supply Chain
Pakupedzisira, funga kwakabva. Indasitiri yeMIM ine vatambi vanobvira kuotomatiki zvakanyanya, zvakasimudzwa zvakasanganiswa hofori kuenda kuzvitoro zvidiki zvehunyanzvi. Kune prototyping uye yakaderera-vhoriyamu yekugadzira inomhanya, diki, hunyanzvi chitoro chitoro chinogona kuita zvakanyanya. Ndivo kazhinji kwaunowana iwo chaiwo maitiro nyanzvi anozogadzira mbiri yechoto neruoko rwebasa rako.
Paunenge uchiongorora mumwe wako, usangokumbira bhurocha rekugona. Bvunza maitiro avo akajairwa ekushandisa sintering 316L. Bvunza kuti uone density report dzavo uye micrographs yechikamu chakafanana. Bvunza kuti vanokodzera sei chikafu chitsva chekudya. Mhinduro dzavo dzichakuudza kupfuura chero webhusaiti. Kambani yakagara kwenguva refu mubhizimusi rezvikamu zvesimbi, seyakambotaurwa nezvayo anopfuura makore makumi matatu mukukanda uye kugadzira, inounza tsika yekugadzikana kwemaitiro uye emhando masisitimu akakosha, kunyangwe sezvaanogona kutora matekinoroji matsva seMIM. Unogona kuwana zvakawanda nezve kugona kwavo kwekutanga pane yavo saiti, https://www.tsingtaocnc.com.
Pakupedzisira, simbi jekiseni kuumba Stainless simbi chishandiso chine simba, asi chingori chishandiso chimwe chete. Kubudirira kwaro kunotsamira pakunzwisisa kwakadzika, kunoshanda kweketani yese-kubva paupfu kusvika kune yakasimwa-uye ongororo yechokwadi yekuti chikamu chiri padhirowa chakanyatsokodzera maitiro. Iko hakuna mashiripiti, ingori yakawanda sainzi inodzorwa uye zvishoma zvakaunganidzwa, dzimwe nguva zvakaoma-kuhwina, shopu pasi huchenjeri.
