Ke kalaiwa anaʻo ka hana ʻana i ka metala paʻa ma luna a me laloke kalaiwa anamake i loko o ka mold keena i koi 'ia ka plastic kahe molding, no laila, e loaa i ke kinona o kanā kalaiwakūlike me ke keʻena mold, i kapa ʻia ʻo die forging. E like me ke ʻano paʻa o ka forging make, hiki ke hoʻokaʻawale ʻia i ka paʻa paʻa paʻa a me ka paʻamake forging.
1. Paʻamake forging ke kalaiwa anaʻO ka make o luna a me ka make lalo, i hoʻopaʻa ʻia ma ke poʻo hāmare a me ka ʻāpana anvil o ka hāmare forging die, ʻo ka alignment o luna a me lalo make e hōʻoiaʻiʻo ʻia e ka hammer die forging. I ka wā e hoʻopaʻa ai, waiho ʻia ka blank wela i loko o ke keʻena make haʻahaʻa, a na ke poʻo hāmare e hoʻokele i ka make o luna e hoʻoheheʻe, i kahe ka metala a hoʻopiha i ke keʻena make e hana i kake kalaiwa ana, a paʻi ʻia ka metala keu i loko o ke awāwa lihi lele e hana i ka lihi lele, a laila ʻoki ʻia ma hopeke kalaiwa ana. Make forgingnā ʻāpana me nā ʻano paʻakikī, pono e wehe i nā pahu make nomake forging, no laila e puka mālie ana ka billet i loko o kekahi mau pahu make, a hoʻopaʻa hope i ke ʻano i makemake ʻia i ka lua make hope. Paʻamake forgingloaʻa nā pōmaikaʻi o ka huahana kiʻekiʻe,maikaʻi ka maikaʻi forging maikaʻi,ʻano paʻakikī a me ka mālama ʻana i nā mea metala, ʻo ia ke ʻano kumu o ka makeke kalaiwa ana. Akā, pono ke kumukūʻaimake forginglako a make, ka nui o kake kalaiwa anakaupalena ʻia e ke tona o ka makeke kalaiwa anamea lako. No laila, kūpono wale ia no ka hana nui.

2. Tiremake forginghoʻokō ʻia ka hana ʻana o ka tire die forgingkalai manuahinā mea hana, me ka ʻole o ka make forging lako, ka forging die i hoʻohana ʻia he maʻalahi, kiʻekiʻe huahana, forging quality ʻoi aku ka maikaʻi, hiki ke mālama i ka metala, hoʻemi i ke kumukūʻai. Eia nō naʻe, i ka hana ʻana i nā pilahi maʻamau, pono e hoʻoneʻe lima ʻia ka make o luna a me lalo, ʻoi aku ka ikaika o ka hana a pili i ka hoʻomaikaʻi hou ʻana o ka huahana. No laila, hoʻohana nui ʻia ia i ka hana ʻana i nā forgings liʻiliʻi ma waena a me nā ʻāpana liʻiliʻi. I ka nui o ka hana hoʻopaʻa ʻia die forging, ʻoi aku ka kiʻekiʻe o ka mahana o ka mea forging ma mua o ka mea make. ʻAʻole nui ka hopena o ke koʻikoʻi i ka hoʻoulu ʻana, akā ʻoi aku ka nui o ka hopena i ka wikiwiki deformation. No laila, ʻokoʻa ka hilinaʻi ʻana o ke koʻikoʻi i ka helu deformation no nā metala like ʻole a me nā alloys i ka wā e wela ai ka hapa nui o nā metala ma luna o ka mahana recrystallization. Ma ka lumi wela, liʻiliʻi loa ka hopena o ka deformation rate ma ke koʻikoʻi o ka hapa nui o nā metala.