I-Metal Powder Molding Technology (MIM) bubuchwephesha bokubumba besinyithi obutsha obukufutshane ne-net-form ebunjwe ngokuzisa iteknoloji yokubumba yesitofu seplastiki yanamhlanje kummandla womgubo wesinyithi.
Intshayelelo yobugcisa
Itekhnoloji yokubumba inaliti yomgubo wesinyithi idibanisa itekhnoloji enezinto ezininzi ezifana netekhnoloji yokubumba iplastiki, ikhemistri yepolymer, itekhnoloji yomgubo wesinyithi, kunye nesayensi yezixhobo zetsimbi. Isebenzisa iimold ukutofa izithuba ezingenanto kwaye yenza ngokukhawuleza ukuxinana okuphezulu, ukuchaneka okuphezulu, iimilo eziyinkimbinkimbi ezine-dimensional ezintathu ngokusebenzisa i-sintering. Amalungu esakhiwo. Okokuqala, i-powder eqinile kunye ne-organic binder ixutywe ngokufanayo, kwaye emva kwe-granulation, ifakwe kwi-mold cavity kunye ne-injection yomshini wokubumba kwindawo eshushu kunye neplastiki (~ 150 ° C) yokuqinisa, kwaye i-parison yenziwe ngekhemikhali okanye ukubola kwe-thermal. Isibophelelo kwimveliso siyasuswa, kwaye ekugqibeleni imveliso yokugqibela ifunyenwe ngokuntywila kunye nokuxinana.
Le teknoloji yenkqubo ayinayo nje inzuzo yenkqubo yesinyithi ye-metallurgy yesiqhelo njengamanyathelo ambalwa, akukho okanye ngaphantsi kokusika, kunye neenzuzo eziphezulu zezoqoqosho, kodwa ziphinde zoyise iintsilelo zemveliso yesinyithi yomgubo yemveli efana nezixhobo ezingalinganiyo, iipropati eziphantsi komatshini, kunye nobunzima bokwenza iindonga ezibhityileyo kunye nezakhiwo ezinzima. Kufanelekile ngokukhethekileyo ukuveliswa kobuninzi beentsimbi ezincinci, ezinzima kunye nezikhethekileyo ezifunekayo. Ineempawu zokuchaneka okuphezulu, isakhiwo esifanayo, ukusebenza kakuhle kunye neendleko eziphantsi zokuvelisa.
Ukuhamba kwenkqubo
Inkqubo yokuhamba: isibophelelo → ukudibanisa → ukubumba isitofu → ukuthoba igrisi → ukucola → ukusetyenzwa kwasemva.
Umgubo wamaminerali
Ubungakanani be-particle ye-powder yensimbi esetyenziswe kwinkqubo ye-MIM ngokuqhelekileyo yi-0.5 ~ 20μm; ithiyori, i-fineral particles, inkulu indawo ethile yomhlaba, okwenza kube lula ukumila kunye ne-sinter. Inkqubo yemveli yomgubo wesinyithi isebenzisa umgubo orhabaxa omkhulu kuno 40μm.
I-adhesive ye-Organic
Umsebenzi we-adhesive ye-organic adhesive ukudibanisa i-metal powder particles ukwenzela ukuba umxube ube ne-rheology kunye ne-lubricity xa ushushu kwi-barrel yomshini wokujova, oko kukuthi, ngumthwali oqhuba i-powder ukuba ihambe. Ngoko ke, i-binder ikhethwa ukuba ibe ngumthwali we powder yonke. Ke ngoko, ukhetho lokutsalwa okuncangathi sisitshixo sokubumba inaliti yomgubo.
Iimfuno zokuncamathelisa eziphilayo:
I-1.Ukusetyenziswa kwe-adhesive encinci kunokuvelisa i-rheology engcono yomxube;
2.Akukho ukuphendula, akukho mpendulo yeekhemikhali kunye nomgubo wensimbi ngexesha lokususwa kwe-adhesive;
3.Easy ukususa, akukho carbon uhlala kwimveliso.
Ukuxuba
Umgubo wesinyithi kunye ne-organic binder zixutywe ngokufanayo ukwenza izinto ezahlukeneyo ezikrwada zibe ngumxube wokubumba inaliti. Ukufana komxube kuchaphazela ngokuthe ngqo umbane wayo, ngaloo ndlela kuchaphazela iiparameters zenkqubo yokubumba inaliti, kunye nokuxinana kunye nezinye iimpawu zezinto zokugqibela. Eli nyathelo lenkqubo yokubumba inaliti iyahambelana ngokomgaqo kunye nenkqubo yokubumba inaliti yeplastiki, kunye neemeko zezixhobo zayo ziyafana. Ngethuba lenkqubo yokubumba i-injection, izinto ezixubekileyo zifudunyezwa kwi-barrel yomshini wokutofa kwizinto zeplastiki ezineempawu ze-rheological, kwaye zifakwe kwi-mold phantsi koxinzelelo olufanelekileyo lwenaliti ukwenza into engenanto. Isitofu esibunjiweyo singenanto kufuneka sifane nge-microscopically ukuze imveliso icutheke ngokulinganayo ngexesha lenkqubo ye-sintering.
Ukutsalwa
Isibophelelo sezinto eziphilayo eziqulethwe kwindawo engenanto ebunjiweyo kufuneka isuswe phambi kokuba sintering. Le nkqubo ibizwa ngokuba yi-extraction. Inkqubo yokukhutshwa kufuneka iqinisekise ukuba i-adhesive ikhutshwe ngokuthe ngcembe kwiindawo ezahlukeneyo ezingenanto kunye neendlela ezincinci phakathi kwamaqhekeza ngaphandle kokunciphisa amandla angenanto. Ireyithi yokususa isibophelelo jikelele ilandela i-diffusion equation. I-Sintering inokuncipha kwaye igxininise i-porous degreased blank kwiimveliso ezinokwakheka kunye neempawu ezithile. Nangona ukusebenza kweemveliso kunxulumene nezinto ezininzi zenkqubo phambi kokuba sintering, kwiimeko ezininzi, inkqubo sintering inempembelelo enkulu okanye egqibeleleyo kwisakhiwo metallographic kunye neepropati imveliso yokugqibela.
Emva kokulungiswa
Kwiindawo ezineemfuno zobukhulu obuchanekileyo, ulungiso oluyimfuneko lwasemva luyafuneka. Le nkqubo iyafana nenkqubo yokunyanga ukushisa kweemveliso zetsimbi eziqhelekileyo.
Iinzuzo zenkqubo
I-MIM isebenzisa iimpawu zetekhnoloji yomgubo wesinyithi ukutshiza iinxalenye zoomatshini ezinoxinano oluphezulu, iipropathi ezilungileyo zoomatshini kunye nomgangatho womphezulu; kwangaxeshanye, isebenzisa iimpawu zokubumba inaliti yeplastiki ukuvelisa iinxalenye ezinemilo entsonkothileyo ngobuninzi nangempumelelo.
1.Iinxalenye zesakhiwo ezinezakhiwo ezinzima kakhulu zinokuqulunqwa.
Ukusetyenzwa kwentsimbi yesiNtu ngokuqhelekileyo kubandakanya ukusetyenzwa kweepleyiti zetsimbi kwiimveliso ngokujika, ukugaya, ukucwangcisa, ukugaya, ukubhola, ukudika, njl. Ngenxa yeendleko zobugcisa kunye neendleko zexesha, kunzima ukuba iimveliso ezinjalo zibe nezakhiwo ezinzima. I-MIM isebenzisa umatshini wokujova ukujova imveliso engenanto ukuze kuqinisekiswe ukuba izinto eziphathekayo zizalise ngokupheleleyo i-mold cavity, ngaloo ndlela iqinisekisa ukufezekiswa kwesakhiwo esinzima kakhulu senxalenye.
I-2.Imveliso ine-microstructure efanayo, ubuninzi obuphezulu kunye nokusebenza kakuhle.
Kwiimeko eziqhelekileyo, ukuxinana kweemveliso ezicinezelekileyo kunokufikelela kuphela kwi-85% yoxinaniso lwethiyori; Ubuninzi beemveliso ezifunyenwe yi-MIM iteknoloji inokufikelela ngaphezu kwe-96%.
I-3.Ukusebenza okuphezulu, kulula ukufezekisa ubunzima kunye nemveliso enkulu.
Umngundo wesinyithi osetyenziswa kubuchwephesha beMIM unobomi obulingana nobobunjineli bobunjineli bokubumba inaliti yeplastiki. Ngenxa yokusetyenziswa kweentsimbi zetsimbi, i-MIM ifanelekile kwimveliso yobuninzi yamacandelo.
4.Uluhlu olubanzi lwezinto ezisebenzayo kunye neenkalo ezibanzi zesicelo.
I-MIM ingasebenzisa phantse izinto ezininzi zetsimbi, kunye nokuqwalasela uqoqosho, izinto eziphambili zesicelo ziquka i-iron-based, i-nickel-based, i-alloy ephantsi, i-copper-based, i-high-speed steel, insimbi engenasici, i-valve ye-gram, i-carbide ene-cemented, kunye ne-titanium-based metals.
5.Yonga ngokubalulekileyo imathiriyeli ekrwada
Ngokuqhelekileyo, izinga lokusetyenziswa kwesinyithi kwi-processing metal kunye nokwenza liphantsi. I-MIM inokuphucula kakhulu izinga lokusetyenziswa kwemathiriyeli ekrwada, ethi ngokwethiyori i-100% yokusetyenziswa.
I-6.Inkqubo ye-MIM isebenzisa i-micron-level powder fine.
Ayinakukhawulezisa ukucutheka kwe-sintering kuphela, inceda ukuphucula iipropathi zoomatshini, yandise ubomi bokudinwa kwezixhobo, kodwa iphucule ukuchasana noxinzelelo lwe-corrosion kunye neempawu zamagnetic.
Iindawo zesicelo
Iimveliso zayo zisetyenziswa kakhulu kumashishini afana nobunjineli bolwazi lwe-elektroniki, izixhobo zebhayomedical, izixhobo zeofisi, iimoto, oomatshini, iihardware, izixhobo zemidlalo, ishishini lokubukela, izixhobo kunye ne-aerospace.
1.Iikhompyuter kunye nezixhobo ezincedisayo: njengendawo yomshicileli, iikhori zemagnethi, izikhonkwane zokubetha, kunye neendawo zokuqhuba;
2.Izixhobo: njengeentsimbi zokubhoboza, iibhithi zokusika, imilomo, izixhobo zokudubula, ii-spiral milling cutters, iipantshi, iisokethi, iziklintshi, izixhobo zombane, izixhobo zezandla, njl.njl.;
3.Izixhobo zasekhaya: ezifana neekesi zokubukela, iintambo zokubukela, iibhrashi zamazinyo zombane, isikere, iifeni, iintloko zegalufa, iilinki zobucwebe, iintsimbi zosiba, iintloko zezixhobo zokusika kunye nezinye iindawo;
4.Iinxalenye koomatshini bezonyango: njengeefreyimu ze-orthodontic, izikere, kunye ne-tweezers;
5.Amalungu omkhosi: imisila ejulwayo, iinxalenye zemipu, iintloko zemfazwe, izigqubuthelo zomgubo, kunye namalungu e-fuze;
6.Amalungu ombane: ukupakishwa kwe-elektroniki, iinjini ezincinci, iinxalenye zombane, izixhobo zoluvo;
7.Amalungu oomatshini: njengoomatshini bokukhulula umqhaphu, oomatshini belaphu, oomatshini bokugoba, oomatshini beofisi, njl.;
8.Iimoto kunye neendawo zaselwandle: njenge-clutch yangaphakathi, umkhono wefolokhwe, umkhono womthengisi, isikhokelo sevalvu, ihabhu yongqamaniso, iinxalenye ze-airbag, njl.
