Nkhani

Kupangira Metal Injection Molding (MIM) ndi mtundu watsopano wa ukadaulo wa Powder metallurgy, womwe umapangidwa kuchokera ku ufa wopangira jekeseni (PIM) wa zigawo za ceramic. Njira zazikulu zopangira Metal Injection Molding ndi izi: kusakaniza ufa wachitsulo ndi binder-granulation-injection molding-degreasing-sintering-subsequent treatment-subsequent treatment-subsequent treatment-product, ukadaulowu ndi woyenera kupanga zinthu zazing'ono, zovuta, komanso zogwira ntchito kwambiri. Zigawo za ufa wopangira ufa, monga zomwe zimagwiritsidwa ntchito ndi makampani aku Swiss wotchi popanga zigawo za wotchi. M'zaka zaposachedwa, ukadaulo wa MIM wakula mofulumira, zida zomwe zimagwiritsidwa ntchito ndi izi: Fe-Ni alloy, chitsulo chosapanga dzimbiri, chitsulo cha zida, high specific gravity alloy, cemented carbide, titanium alloy, ni-based superalloy, intermetallic compound, alumina, zirconia ndi zina zotero. Ukadaulo wa Metal Injection Molding (MIM) umafuna kuti kukula kwa tinthu ta ufawo kukhale kochepa kuposa micron ndipo mawonekedwe ake ndi ozungulira. Kuphatikiza apo, kukhuthala kosasunthika, kugwedezeka, chiŵerengero cha kutalika ndi m'mimba mwake, ngodya yachilengedwe yotsetsereka ndi kufalikira kwa tinthu tating'onoting'ono ndikofunikiranso. Pakadali pano, njira zazikulu zopangira ufa wa ukadaulo wopangira chitsulo ndi atomization yamadzi, atomization ya mpweya ndi njira ya gulu la carbonyl. Mitundu ya ufa yomwe imagwiritsidwa ntchito kwambiri popangira zitsulo zosapanga dzimbiri ndi iyi: 304L, 316L, 317L, 410L, 430L, 434L, 440A, 440C, 17-4PH, ndi zina zotero. Njira yopangira atomization yamadzi ndi iyi: kusankha zinthu zosapanga dzimbiri - kusungunuka mu uvuni wapakatikati - kusintha kapangidwe kake - kuchotsa oxidation ndi slag - atomization ndi pulverization - kuzindikira khalidwe - kufufuza - kulongedza ndi kusungira, zida zazikulu zomwe zimagwiritsidwa ntchito ndi izi: ng'anjo yapakatikati, pampu yamadzi yamphamvu kwambiri, chipangizo chopukutira chotsekedwa, thanki yamadzi yozungulira, zida zowunikira ndi kulongedza, zida zoyesera.

Njira yakupangika kwa mpweyandi motere:

kusankha zinthu zosapanga dzimbiri zosapanga dzimbiri - kusungunuka mu uvuni wapakatikati - kusintha kapangidwe kake - kuchotsa oxidation ndi slag - atomization ndi pulverization - kuzindikira khalidwe - kufufuza ndi kusunga. Zipangizo zazikulu zomwe zimagwiritsidwa ntchito ndi: ng'anjo yosungunuka yapakatikati, gwero la nayitrogeni ndi chipangizo cha atomization, thanki yamadzi yozungulira, zida zowunikira ndi kulongedza, zida zoyesera. Njira iliyonse ili ndi zabwino ndi zoyipa zake: Kutulutsa madzi ndiye njira yayikulu yopukutira, kugwira ntchito kwake kwakukulu, kupanga kwakukulu ndikotsika mtengo, kungapangitse ufa kukhala wabwino, koma mawonekedwe ake ndi osakhazikika, omwe amathandiza kusunga mawonekedwe, koma chomangira chomwe chimagwiritsidwa ntchito kwambiri, chimakhudza kulondola. Kuphatikiza apo, filimu ya oxidation yomwe imapangidwa ndi momwe madzi ndi chitsulo zimagwirira ntchito kutentha kwambiri zimalepheretsa kuyaka. Kutulutsa mpweya ndiyo njira yayikulu yopangira ufa waukadaulo wopangira chitsulo. Ufa wopangidwa ndi mpweya wa atomization ndi wozungulira, wokhala ndi digiri yotsika ya okosijeni, wofunika pang'ono womangirira komanso wopangidwa bwino, koma zokolola za ufa wabwino kwambiri ndi zochepa, mtengo wake ndi wokwera ndipo mawonekedwe ake ndi otsika, c, N, H, O mu binder zimakhudza thupi losungunuka. Ufa wopangidwa ndi njira ya carbonyl ndi woyera kwambiri, wokhazikika pachiyambi komanso wochepa kwambiri kukula kwa tinthu tating'onoting'ono. Ndi woyenera kwambiri MIM, koma wa Fe, Ni ndi ufa wina wokha, womwe sungakwaniritse zofunikira za mitundu. Pofuna kukwaniritsa zofunikira za ufa wopangira chitsulo, makampani ambiri asintha njira zomwe zili pamwambapa ndikupanga njira za micro-atomization ndi laminar atomization. Tsopano nthawi zambiri umagwiritsidwa ntchito kuphatikiza ufa wa atomized wamadzi ndi ufa wa atomized wagesi, woyamba kuti uwonjezere kuchuluka kwa compaction, womaliza kuti usunge mawonekedwe ake. Pakadali pano, kugwiritsa ntchito ufa wa atomizing wamadzi kungapangitsenso thupi losungunuka ndi kuchuluka kopitilira 99%, kotero ufa wa atomizing wamadzi wokha umagwiritsidwa ntchito pazinthu zazikulu, ndipo ufa wa atomizing wamagetsi umagwiritsidwa ntchito pazinthu zazing'ono. M'zaka ziwiri zapitazi, Handan Rand Atomizing Pulverizing Equipment Co., Ltd. yapanga mtundu watsopano wa zida zopukutira atomiki, zomwe sizingotsimikizira kupanga kwakukulu kwa atomizing yamadzi ndi ufa wa ultrafine, komanso kuganizira zabwino za mawonekedwe a ufa wozungulira.