1.Wiech inzira

Inzira ya Wiech ihagarariwe na patenti yahimbwe na Wiech mu 1980 kandi imaze kunozwa inshuro nyinshi. Sisitemu y'ibanze ifatika ya Wiech igizwe n'ibishashara bya paraffin hamwe na resinoplastique. Binder na poro bivanze kubikoresho byogosha ubwoko bwa “Z” cyangwa “Σ”. Igikorwa cyambere cyo gutesha agaciro ni intambwe ebyiri aho MIM ikora bilet ishyirwa mububiko bwa vacuum hanyuma igashyuha cyangwa hejuru yubushyuhe bwo gutembera kwa binder, hanyuma umusemburo ukongerwaho buhoro buhoro muburyo bwa gaze kuri kontineri ifitemo fagitire. Umwuka wa gaze winjira mumatike kugirango ushongeshe binder, kandi iyo ushongeshejwe kurwego runaka, igisubizo cyumuti wa binder kizasohoka mumatike. Gukora ubusa hamwe nibice byinshi byavanyweho byinjizwa mumashanyarazi kugirango akureho ibisigaye. Hanyuma, fagitire yo gushiraho irashyuha kugirango ikureho bimwe bisigara bisigaye hamwe na solvent, kandi ibicuruzwa byarangiye biracumura. Inzira ifata iminsi 3 kugirango igabanye gaze ya gaze yonyine

Imikorere yo gutesha agaciro ni mike cyane. Nkuko ubushyuhe bugabanuka buri hejuru yubushyuhe bwo gutembera kwa binder, guhindura ibintu birakomeye. Inzira yaje guhindurwa muburyo bwose bwo kugabanuka kubushyuhe bwumuriro kandi igihe cyo kugabanuka cyaragabanutse cyane. Mu iterambere ryambere ryinganda za MIM, ibigo byinshi byakiriye inzira ya Wiech. Kugeza ubu, ibigo bimwe na bimwe biracyakoresha inzira ya Wiech kubyara umusaruro. Nyamara, inzira ya Wiech ifite ibibazo nkumuvuduko mwinshi wo gutera inshinge icyatsi kibisi, byoroshye gucika no guhindura ibintu, kandi biragoye kubyara ibice bifite ubunini bunini.

2 Injectamax inzira

Johnson wo muri AMAX Metal Injection Molding USA yahimbye gahunda ya Injectamax mu 1988. Inyungu nyamukuru yiki gikorwa nuko binder yayo igizwe na paraffine, amavuta yimboga, na polymer. Amavuta akomoka ku bimera atemba iyo yatewe kandi akonje, bigatuma ingano yimikorere ya bilet ihinduka gato mbere na nyuma yo gutera inshinge, kandi bikagabanya imihangayiko yimbere mumatike. Iyo bigabanutse, umusemburo nka trichloroethane ukoreshwa muguhitamo gushonga amavuta yimboga nigishashara cya paraffin mbere, mugihe ibice bitangirika ntibishonga. Ibi bifungura umuyoboro wa pore hanyuma ukuraho binder isigaye mukugabanuka kwubushyuhe. Igikorwa cyose cyo gutesha agaciro igihe ni gito, 6h gusa, nimwe

Uburyo bwihuse bwo gutesha agaciro. Bitewe n'ubworoherane bwayo, ishoramari rito hamwe nubushobozi buhanitse, kugabanuka kwangirika hamwe nubushyuhe bwo kugabanya ubushyuhe bwintambwe ebyiri byemerwa nabenshiIbigo bya MIMn'ababikora.

Uburyo bwa Metamold

Inzira ya Metamold ni inzira ya MIM ya catalitiki yo gutesha agaciro yakozwe na Bloemacher ingana na BSAF mu Budage mu ntangiriro ya za 90. Tekiniki nyamukuru iranga ubu buryo nuko ikoresha polyether resin nka binder kandi itera kugabanuka vuba mumyuka ya acide. Gukoresha urunigi rurerure polyether resin nka binder, ukoresheje polyether resin polarite kugirango uhuze ifu yicyuma, irashobora kuba muburyo butandukanye bwubwoko bwifu. Formaldehyde ibora muri fordehide munsi ya catalizike yikirere cya aside. Iyi reaction yo kubora ibaho byihuse hejuru ya 110 ℃, ni gazi-2 itaziguye. BASF yabanje gukoresha aside nitricike nka catalizator, itera kugabanuka kurwego rwo hasi kuruta polymerisation

Ubushuhe bworoshe bwa aldehyde resin birinda gushiraho icyiciro cyamazi, kikaba gifite akamaro mukugenzura ihinduka ryimiterere yicyatsi kibisi kandi bikaremeza neza neza nyuma yo gucumura. Kugabanuka kwa catalitiki bikorwa kuri interineti ya binder mu kirere 2. Nta gasi iri mu fagitire ikora, kandi umuvuduko ugenda utera imbere urashobora kugera kuri 1 ~ 4mm / h. BASF yaje gukora uburyo bushya bwo gukoresha aside ya oxyde nka catalizator, ishobora gukoreshwa kumavuta akomeye hamwe nubutaka, kwagura ikoreshwa rya Metamold. Ikintu cyingenzi cyuburyo bwa Metamold nuko ifata catalizator igabanuka, kandi nta cyiciro cyamazi kigaragara mugihe cyo kwangirika, birinda intege nke ibicuruzwa bya MIM bikunda guhinduka kandi kugenzura neza biragoye. Nintambwe ikomeye mubikorwa bya MIM, kandi kubera ko ari catalitike igabanuka, igihe cyo kugabanuka kigabanuka cyane kandi ikiguzi kikagabanuka. Ingano niniIbice bya MIMirashobora gukorwa nuburyo bwa Metamold. Hamwe na sisitemu ya CREMER idahwema kwangirika no gucumura, umusaruro uhoraho urashoboka, bigatuma MIM iba PM irushanwa rwose muburyo bwikoranabuhanga rifite isuku. Nyamara, ubu buryo bufite ibibazo bimwe nkibikoresho byo kwangiza ikirere hamwe no gutunganya imyanda, kandi ikiguzi cyibikoresho byibanze ni kinini.

Hens ya Us-ishingiye kuri Thermal Precision Technology yateje imbere uburyo bushya bwitwa precision metalgushiramo ifu(PPIM). Isosiyete ivuga ko gukoresha ubu buryo bizateza imbere ikoranabuhanga rya MIM mu bihe bishya by’igiciro gito, gisobanutse neza, umusaruro mwinshi no kurwanya ibidukikije. Ibyingenzi byingenzi biranga tekinike ya PPIM bikubiye mubice bibiri, kimwe ni ugukoresha amazi ashonga. Binder igizwe na polyethylene glycol (PEG) nkibintu byambere hamwe na polymer ihujwe nka polyvinyl butyral (PVB) nkibintu bya kabiri. Kwangirika rero birashobora kugabanywamo intambwe ebyiri, iyambere ikurwaho nuburyo bwo gusesa amaziPEG, aho PVB iguma muburyo bukomeye. Ku rundi ruhande, inzira ya PPIM ifata ifu yicyuma igizwe no kohereza ingano nini nini, ikoresheje ifu yuzuye, ifu nziza yo gukusanya ifu, kugirango imitwaro yifu mu biryo yiyongere, kuko ifu yicyuma idafite ingese ishobora kugera kuri 74% (agace k'ubunini), bikagabanya cyane kugabanuka k'ubunini. Bitewe nibi bintu bibiri byateye imbere, ibipimo byibicuruzwa bishobora kugera kuri ± 011% ukoreshejeInzira ya PPIM, ni cyo hejuru muri byose MIM itunganyaKuri ubu.