He aha ka MIM binder?

Ke koho ʻana i nā mea hoʻopaʻa paʻa pauka,ʻenehana hoʻoheheʻe ʻia ka pauda metalaʻO ia ka huahana o ka hoʻohui ʻana a me ka hui ʻana o ka ʻenehana hoʻoheheʻe ʻana i ka plastik, kemika polymer, ka ʻenehana metallurgy pauka a me ka ʻepekema mea metala. Hiki ke hoʻohana ʻia ka mold e hoʻoheheʻe i ka blank a hele i loko o Sintering hiki ke hana wikiwiki i nā ʻāpana kiʻekiʻe kiʻekiʻe, kiʻekiʻe kiʻekiʻe, ʻekolu-dimensional complex-shaped structural parts. Hiki iā ia ke hana wikiwiki a pololei i nā manaʻo hoʻolālā i nā huahana me kekahi mau hiʻohiʻona a me nā hiʻohiʻona hana, a hiki ke hana pololei i nā ʻāpana. He hoʻololi hou ia i ka ʻoihana ʻenehana hana.

Nā hiʻohiʻona hana:

ʻO kēia ʻenehana kaʻina hana ʻaʻole wale nā ​​mea maikaʻi o nā kaʻina hana metallurgy pauka maʻamau e like me ka liʻiliʻi o nā ʻanuʻu, ʻaʻole a i ʻole ka liʻiliʻi o ka ʻoki ʻana, a me nā pono waiwai kiʻekiʻe, akā ua lanakila pū kekahi i nā hemahema o nā kuʻuna.huahana metallurgy paudae like me nā mea like ʻole, nā waiwai mechanical haʻahaʻa, a me ka paʻakikī i ka hana ʻana i nā paia lahilahi a me nā hale paʻakikī. He kūpono loa ia no ka hana nui ʻana i nā ʻāpana metala liʻiliʻi, paʻakikī a kūikawā. Kaʻina hana: binder → hui ʻana → injection molding → degreasing → sintering → post-processing.

Pauda metala pauda:

ʻO ka nui o ka ʻāpana o ka pauda metala i hoʻohana ʻia i kaKaʻina MIMmea maʻamau 0.5 ~ 20μm; ʻO ka manaʻo, ʻoi aku ka maikaʻi o nā ʻāpana, ʻoi aku ka nui o ka ʻili kikoʻī, e maʻalahi ai ke hoʻohālikelike a me ka sinter. Ke hoʻohana nei ke kaʻina hana metallurgy pauka i nā pauka coarser ʻoi aku ka nui ma mua o 40μm.

I loko o ka MIM hoʻoheheʻe kumuhana, he kuleana koʻikoʻi ka mea hoʻopaʻa, pili pono ia i ka hui ʻana, hoʻoheheʻe ʻia, degreasing a me nā kaʻina hana ʻē aʻe, a he hopena maikaʻi loa i ka maikaʻi, degreasing a me ka dimensional pololei o ka metala pauka injection molding blank, alloy composition, etc. ke kahe ana o ka pauda. No laila, ʻo ke koho o ka binder ke kī i ka hoʻokumu ʻana o ka pauka pauka. Nā koi no ka binder:

• liʻiliʻi, ʻo ia hoʻi, e hōʻoia i ka ʻoi aku ka maikaʻi o ka rheology i ka wā e hoʻohana ai i ka mea hoʻopili liʻiliʻi e like me ka hiki;
• ʻAʻohe pane, ʻo ia hoʻi, ʻaʻohe hopena kemika me ka pauka metala;
• E maʻalahi e wehe, ʻaʻohe koena o ka huahana.

ʻO ka ʻuhane o ka binder powder metallurgy MIM kaʻina, ʻo kāna hoʻohui a me ka wehe ʻana ʻo ia ka ʻenehana nui o MIM, a ʻo ke kaʻina degreasing i hoʻohana ʻia i ka ʻōnaehana binder he kumuhana noiʻi koʻikoʻi ma ka home a ma waho. ʻO nā mea paʻa i hoʻohanaʻia ma MIM e pili ana i nā'ōnaehana thermoplastic, nā'ōnaehana thermoset, nā'ōnaehana hoʻoheheʻe wai, nā pūnaewele gel a me nā'ōnaehana kūikawā, i kēlā me kēia me kona mau pono a me nā hemahema. ʻO ka Thermoplastic binder system ka mea nui a me ka precursor o MIM binder, a ke nānā aku nei nā kānaka i ka hoʻomaikaʻi ʻana i nā waiwai rheological o ka hānai ʻana i ka palaoa, Ua hana ʻia ka nui o ka noiʻi e hōʻemi i ka deformation degreasing a hoʻopōkole i ka manawa degreasing, a ua kūkulu ʻia kekahi mau mea hana kūikawā me nā polyacetal binders. Akā ʻo ka noiʻi ʻana a me ka hoʻomohala ʻana o nā mea hoʻopaʻa ʻaʻole nele me nā pauka
ʻO ka pilina, ka hui ʻana o nā pauka a me nā mea hoʻopaʻa, rheological a me thermodynamic waiwai o nā binders a me nā meaʻai ma lalo o nā kūlana like ʻole, ʻO ka mana o nā mea hoʻopaʻa i ka degreasing a me nā waiwai huahana e hāʻawi i nā kumu āpau a me ke kumu kumu no ke koho ʻana i nā mea hoʻopaʻa, he mea kānalua ʻole He manaʻo maikaʻi loa. ʻO ka hoʻomohala ʻana i kahi ʻōnaehana binder hou a maikaʻi hoʻi ke kumu oʻenehana MIM.