1.Wiech tukanga

Ko te tukanga Wiech e tohuhia ana e tetahi patent i hangaia e Wiech i te tau 1980, a he maha nga wa i pai ake ai. Ko te punaha whakapiri taketake o te tukanga Wiech ko te paraffin wax me te kapia thermoplastic. Ka konatunatua te here me te paura ki runga i te taputapu kutikuti mata momo “Z” ranei “Σ”. Ko te tukanga whakaheke tuatahi he tukanga e rua-taahiraa i te tuatahi ka tuuhia te pire hanga MIM ki roto i te ipu korehau ka whakamahana ki runga ake ranei i te pāmahana rere o te kaihere, katahi ka ata taapirihia te whakarewa ki te ahua hau ki te ipu kei reira te pire hanga. Ko te whakarewa hau ka uru ki roto i te pire hanga hei whakakore i te kaapiri, a, ka rewa ki tetahi waahanga, ka puta te otinga whakarewa o te kaapiri mai i te pire hanga. Ko te hanga patea me te tango i te nuinga o te herenga ka rukuhia ki roto i te wai whakarewa hei tango i te toenga here. Ka mutu, ka whakamahanahia te pire hanga hei tango i etahi o nga toenga here me te whakarewa, a ka pania te hua kua oti. E 3 ra te mahi ki te whakaheke i te whakarewa hau anake

He iti rawa te kaha o te whakaheke. I te mea he teitei ake te pāmahana whakaheke i te pāmahana rere o te kaiherehere, he kino te deformation. I muri mai ka huri te tukanga ki te whakaheke i te waiariki, a, ka tino whakaitihia te wa whakaheke. I te whanaketanga tuatahi o te ahumahi MIM, ko te nuinga o nga kamupene i tango i te tukanga Wiech. Tae noa ki tenei wa, kei te whakamahi tonu etahi kamupene i te tukanga Wiech mo te whakaputa. Heoi, he raruraru te tukanga a Wiech penei i te taumahatanga nui o te werohanga kakariki patea, he ngawari ki te pakaru me te rereke, he uaua ki te whakaputa i nga waahanga me te rahi ake.

2 Te tukanga Injectamax

Ko Johnson o te AMAX Metal Injection Molding USA i hanga te tukanga Injectamax i te 1988. Ko te painga nui o te tukanga ko tana herenga he paraffin, hinu huawhenua, me te polymer. He wai te hinu huawhenua ina werohia me te whakamatao, na te mea ka rereke te rahi o te pire hanga i mua i muri i te wa i werohia ai, ka whakamama i te ahotea o roto o te pire hanga. I te wa e whakahekehia ana, ka whakamahia he whakarewa penei i te trichloroethane hei whakakore i te hinu huawhenua me te wax paraffin i te tuatahi, engari kaore nga waahanga kore e rewa. Ma tenei ka whakatuwhera i te hongere pore katahi ka tango i te toenga here ma te whakaheke waiariki. He poto te wa katoa o te mahi whakaheke, 6h anake, he kotahi

He tikanga tere ake mo te whakaheke. Na te ngawari, te iti o te haumi me te tino pai, ko te whakarewatanga o te wairewa me te whakamaarama waiariki e whakahaerehia ana e te nuinga o te waa.Nga kamupene MIMme nga kaihanga.

3 Tikanga Metamold

Ko te tukanga Metamold he MIM catalytic degreasing tukanga i whakawhanakehia e Bloemacher rite o BSAF i Tiamana i te timatanga o te 1990s. Ko te ahuatanga hangarau matua o tenei tikanga ko te whakamahi i te kapia polyether hei here, ka tere te whakaheke i te hau waikawa. Ko te whakamahi i te kapia polyether mekameka roa hei here, te whakamahi i te polarity resin polyether ki te hono i te paura whakarewa, ka pai mo te tini o nga momo paura. Ka pirau te formaldehyde ki te formaldehyde i raro i te whakamaaramatanga o te hau waikawa. Ka tere ake te 110 ℃ tenei tauhohenga pirau, he whakawhitinga totika hau-2. I te tuatahi i whakamahia e te BASF te waikawa nitric hei whakakorikori, e whakakorikori ana i te whakaheke i te taumata iti ake i te polymerization.

Ko te whakamahana ngawari o te kapia aldehyde ka karo i te hanganga o te wahanga wai, he pai ki te whakahaere i te huringa o te pire matomato me te whakarite i te tika o te ahu i muri i te sintering. Ko te whakakorenga catalytic e mahia ana i te atanga o te kaapiri i roto i te haurangi 2. Karekau he hau i roto i te pire hanga, a ko te tere whakamua o te atanga tauhohenga ka tae ki te 1 ~ 4mm/h. I muri mai ka whakawhanakehia e te BASF tetahi tikanga hou mo te whakamahi i te waikawa oxalic hei whakakorikori, ka taea te whakamahi ki nga koranu pakeke me nga karamu, te whakawhānui ake i te whakamahinga o te tukanga Metamold. Ko tetahi ahuatanga nui o te tikanga Metamold ko te tango i te whakahekenga whakakorikori, kaore he waahanga wai e puta i te wa e whakahekehia ana, e karo ana i te ngoikoretanga o nga hua MIM e kaha ana ki te whakarereke me te whakahaere tika i te taha he uaua. He tino pakaruhanga i roto i te umanga MIM, a na te mea he catalytic degreasing, ka tino poto te wa whakaheke, ka heke te utu. Rahi nuiKo nga waahanga mo te MIMka taea te whakaputa ma te tikanga Metamold. Ma te punaha whakaheke a CREMER, ka taea te mahi tonu, ka taea te hanga MIM hei PM tino whakataetae tata-ma-hanga hangarau hanga. Heoi, he raru ano tenei tikanga penei i nga taputapu waikura o te hau waikawa me te maimoatanga hau para, he nui te utu mo te haumi taputapu tuatahi.

Kua whakawhanakehia e nga heihei o te kamupene Hangarau Hangarau Ngaaahu-a-Tau i tetahi tikanga hou e kiia nei ko te whakarewa tikawhakarewa werohanga paura(PPIM). E kii ana te kamupene ma te whakamahi i tenei mahi ka akiaki te hangarau MIM ki te waa hou o te utu iti, te tino tika, te hua nui me te urutaunga taiao. Ko nga ahuatanga hangarau matua o te tukanga PPIM kei roto i nga waahanga e rua, ko tetahi ko te whakamahi i te wai-wairewa-wairewa. Kei roto i te kaihere he polyethylene glycol (PEG) hei huānga tuatahi me te polymer honohono penei i te polyvinyl butyral (PVB) hei huānga tuarua. Na ka taea te wehea te whakaheke ki nga waahanga e rua, ko te tuatahi ka tangohia e te tikanga whakakore waiPEG, kei te noho tonu a PVB i roto i te ahua totoka honohono. I tetahi atu taha, ko te tukanga PPIM te tango i te paura whakarewa i hangaia e te tohatoha o te rahi o te matūriki whanui, te whakamahi i te paura paura, te whakakotahitanga o te paura pai, kia nui ake ai te utaina o te paura i roto i te kai, mo te paura kowiri tira ka tae ki te 74% (hautanga rōrahi), ka tino whakaitihia te rahi o te whakaheke. Na enei whakapainga e rua, ka eke te tika o te ahu o te hua ki te ± 011% ma te whakamahiTe tukanga PPIM, ko te mea teitei rawa atu i nga mea katoa Nga tukanga MIMi tenei wa.