Metal Powder Injection Molding Technology (MIM) inyanzvi nyowani yehupfu padhuze-net-fomu yekuumba tekinoroji yakaumbwa nekuunza yemazuva ano epurasitiki jekiseni rekuumba tekinoroji mumunda wepoda metallurgy.
Nhanganyaya yehunyanzvi
Metal poda jekiseni rekugadzira tekinoroji inosanganisa akawanda-anoranga matekinoroji akadai sepurasitiki yekuumba tekinoroji, polymer chemistry, poda metallurgy tekinoroji, uye simbi zvinhu sainzi. Inoshandisa mold kubaya majekiseni eforoma uye inokurumidza kugadzira yakakwirira-density, yakakwirira-chaiyo, matatu-dimensional yakaoma maumbirwo kuburikidza ne sintering. Zvimiro zvezvikamu. Chekutanga, hupfu hwakasimba uye organic binder zvakakanyiwa zvakafanana, uye mushure megranulation, vanoiswa mugomba remuvhu nemushini wekuumba jekiseni munzvimbo inopisa uye yepurasitiki (~ 150 ° C) yekusimbisa, uye ipapo parison inoumbwa nekemikari kana kupisa kwekupisa. Iyo binder muchigadzirwa inobviswa, uye pakupedzisira chigadzirwa chekupedzisira chinowanikwa nekupisa uye densification.
Iyi tekinoroji tekinoroji haina chete zvakanakira zveyakajairwa simbi yeupfu maitiro senge nhanho shoma, hapana kana kushoma kucheka, uye yakakwirira yehupfumi mabhenefiti, asi zvakare inokunda kukanganisa kwechinyakare upfu metallurgy zvigadzirwa senge zvinhu zvisina kuenzana, yakaderera michina zvinhu, uye kuomerwa mukugadzira matete madziro uye yakaoma zvimiro. Inonyanya kukodzera kugadzirwa kwehuwandu hwezvikamu zviduku, zvakaoma uye zvakakosha-zvinodikanwa zvesimbi. Iyo ine hunhu hwepamusoro chaiyo, chimiro chakafanana, kuita kwakanakisa uye mutengo wakaderera wekugadzira.
Process flow
Process flow: binder → kusanganisa → kuumba jekiseni → kudzikisa → sintering → post-kugadzirisa.
Mineral powder
Ukuru hwehupfu hwesimbi hunoshandiswa muMIM maitiro kazhinji 0.5 ~ 20μm; ne theoretically, iyo yakatsetseka zvidimbu, iyo yakakura iyo chaiyo nzvimbo, zvichiita kuti zvive nyore kugadzira uye sinter. Iyo yechinyakare simbi simbi maitiro anoshandisa coarser poda yakakura kupfuura 40μm.
Organic adhesive
Basa reiyo organic adhesive ndeyekusunga simbi yehupfu zvidimbu kuitira kuti musanganiswa uve ne rheology uye lubricity kana uchipisa mubhodhoro remushini wejekiseni, kureva kuti, inotakura inotyaira hupfu kuyerera. Nokudaro, binder inosarudzwa kuva mutakuri wehupfu hwose. Naizvozvo, sarudzo yekudhonza inonamira ndiyo kiyi kune yese yeupfu jekiseni molding.
Zvinodikanwa zveorganic adhesives:
1.Kushandiswa kwekunamatira zvishoma kunogona kubudisa rheology iri nani yemusanganiswa;
2.No reaction, hapana chemikemikari inoshandiswa nehupfu hwesimbi panguva yekunamatira kubvisa maitiro;
3.Easy kubvisa, hapana carbon inoramba iri muchigadzirwa.
Kusanganisa
Iyo simbi poda uye organic binder zvakasanganiswa zvakafanana kuti zvigadzire zvakasiyana siyana musanganiswa wekuumba jekiseni. Kufanana kwemusanganiswa kunokanganisa zvakananga fluidity yayo, nekudaro inokanganisa jekiseni molding process parameters, pamwe nekuwanda uye zvimwe zvinhu zvekupedzisira zvinhu. Iyi nhanho yekuumbwa kwejekiseni inopindirana musimboti neyepurasitiki jekiseni rekuumba maitiro, uye mamiriro emidziyo yayo zvakare akafanana. Munguva yekuumbwa kwejekiseni, iyo yakasanganiswa zvinhu inopiswa mudhiramu remuchina wejekiseni muchinhu chepurasitiki chine rheological properties, uye inopinzwa muforoma pasi pekumanikidza kwakakodzera jekiseni kuti iite isina chinhu. Jekiseni rakaumbwa risina chinhu rinofanira kunge riine microscopically yunifomu kuitira kuti chigadzirwa chidzikire zvakaenzana panguva yekupisa.
Extraction
Iyo organic binder iri mune yakaumbwa isina chinhu inofanira kubviswa isati yanyura. Iyi nzira inodaidzwa kuti kudhonza. Maitiro ekubvisa anofanirwa kuve nechokwadi chekuti chinonamira chinoburitswa zvishoma nezvishoma kubva munzvimbo dzakasiyana-siyana dzisina chinhu pamwe nediki chiteshi pakati pezvimedu pasina kudzikisa simba rechinhu chisina chinhu. Mwero wekubvisa bhinda kazhinji unotevera diffusion equation. Sintering inogona kudzikira uye kuomesa iyo porous degreased blank muzvigadzirwa zvine chimwe chimiro uye zvivakwa. Kunyangwe kuita kwezvigadzirwa kunoenderana nezvakawanda zvemaitiro zvisati zvaita sinter, kazhinji, iyo sintering process ine yakakura kana kutotemerwa kukanganisa pane metallographic chimiro uye zvimiro zvechigadzirwa chekupedzisira.
Post-processing
Kune zvikamu zvine saizi chaiyo zvinodiwa, inodiwa post-processing inodiwa. Iyi nzira yakangofanana nekupisa kwekupisa kwezvigadzirwa zvesimbi.
Process zvakanakira
MIM inoshandisa hunhu hwehupfu metallurgy tekinoroji kuti sinter mechanical zvikamu zvine high density, yakanaka michina zvivakwa uye pamusoro pemhando; panguva imwe chete, inoshandisa hunhu hwepurasitiki jekiseni kuumba kuburitsa zvikamu zvine maumbirwo akaoma muhuwandu uye nemazvo.
1.Zvikamu zvekugadzirisa zvine zvivako zvakaoma zvikuru zvinogona kuumbwa.
Kugadziriswa kwesimbi kwechinyakare kunowanzo sanganisira kugadzira marata esimbi kuita zvigadzirwa kuburikidza nekutenderedza, kugaya, kuronga, kukuya, kudhirowa, kufinha, nezvimwewo. Nekuda kwemutengo wehunyanzvi uye nyaya dzemutengo wenguva, zvakaoma kuti zvigadzirwa zvakadaro zviite zvakaomarara. MIM inoshandisa muchina wejekiseni kubaya chigadzirwa chisina kuvharwa kuti ive nechokwadi chekuti zvinhu zvacho zvinozadza mhango ye mold, nekudaro kuve nechokwadi chekuzadzikiswa kwechimiro chakaomarara chechikamu.
2.Chigadzirwa chine yunifomu microstructure, high density uye kuita kwakanaka.
Mumamiriro ezvinhu akajairwa, kuwanda kwezvigadzirwa zvakatsikirirwa zvinongokwanisa kusvika pahupamhi hwe85% yeiyo theoretical density; kuwanda kwezvigadzirwa zvakawanikwa neMIM tekinoroji inogona kusvika kupfuura 96%.
3.Kushanda kwepamusoro, nyore kuwana kuwanda uye kugadzirwa kukuru.
Iyo simbi mold inoshandiswa muMIM tekinoroji ine hupenyu hwakaenzana neiyo yeinjiniya epurasitiki jekiseni kuumba mold. Nekuda kwekushandiswa kwesimbi molds, MIM inokodzera kugadzirwa kwakawanda kwezvikamu.
4.Wide yakawanda yezvishandiso zvinoshandiswa uye yakafara minda yekushandisa.
MIM inogona kushandisa inenge yakawanda simbi zvinhu, uye tichifunga nezvehupfumi, huru yekushandisa zvinhu zvinosanganisira iron-based, nickel-based, low alloy, copper-based, high-speed steel, Stainless steel, gram valve alloy, cemented carbide, uye titanium-based metals.
5.Significantly kuchengetedza mbishi zvinhu
Kazhinji, chiyero chekushandiswa kwesimbi mukugadzirisa nekugadzira simbi yakaderera. MIM inogona kuvandudza zvakanyanya mwero wekushandiswa kwezvinhu zvakabikwa, izvo zvinonzi 100% kushandiswa.
6.Iyo nzira yeMIM inoshandisa micron-level poda yakanaka.
Iyo haingogone kumhanyisa sintering shrinkage, kubatsira kuvandudza michina yezvigadzirwa, kuwedzera hupenyu hwekuneta kwezvinhu, asi zvakare kunatsiridza kuramba kushushikana corrosion uye magineti zvivakwa.
Nzvimbo dzekushandisa
Zvigadzirwa zvaro zvinoshandiswa zvakanyanya mundima dzemaindasitiri senge electronic information engineering, biomedical equipment, office equipment, mota, michina, hardware, zvemitambo, indasitiri yewachi, zvombo uye aerospace.
1.Makombiyuta uye zvivakwa zvavo zvekubatsira: senge zvikamu zvekudhinda, magineti cores, mapini ekurova, uye zvikamu zvekutyaira;
2.Zvishandiso: senge madhiri, mabhiti ekucheka, mhino, zvibooreso zvepfuti, spiral milling cutters, zvibhakera, sockets, wrench, maturusi emagetsi, maturusi emaoko, nezvimwewo;
3.Mumba midziyo: senge makesi ekurindira, maketani ekurindira, mabhurasho emagetsi emagetsi, chigero, mafeni, misoro yegorofu, zvishongo zvinongedzo, zvinyoreso zvepeni, kucheka misoro yemidziyo nezvimwe zvikamu;
4.Zvikamu zvemichina yekurapa: zvakadai semafuremu orthodontic, zvigero, uye tweezers;
5.Zvikamu zveMauto: miswe yemissile, mativi epfuti, misoro yehondo, zvivharo zvehupfu, uye zvikamu zvepfuti;
6.Magetsi zvikamu: zvemagetsi kurongedza, micro motors, zvemagetsi zvikamu, sensor zvishandiso;
7.Mechanical zvikamu: semichina yekusunungura donje, michina yemachira, michina yekupeta, michina yemuhofisi, nezvimwe;
8.Automobile uye marine zvikamu: senge clutch yemukati mhete, forogo sleeve, distributor sleeve, valve gwara, synchronization hub, airbag zvikamu, nezvimwe.
