Pehea e koho ai i ka ratio forging?

I ka piʻi ʻana o ka ratio forging, ua hoʻopili ʻia nā pores o loko a ua haki nā dendrites as-cast, e hopena i ka hoʻomaikaʻi nui ʻana i nā waiwai mechanical longitudinal a transverse o ka forging. Akā, i ka elongation forging pauku lākiō oi ma mua o 3-4, e like me ka forging pauku lākiō mahuahua, ike fiber hale hana, e hoemi ana i ka plasticity index o transverse mechanical waiwai, alakai i anisotropy o ka forging. Inā liʻiliʻi ka lakio o ka pauku forging, ʻaʻole hiki i ka forging ke hoʻokō i nā koi hana. Inā ʻoi aku ka nui, hoʻonui ia i ka hana forging a kumu hoʻi i ka anisotropy. No laila, ʻo ke koho ʻana i kahi ratio forging kūpono he mea koʻikoʻi ia, a pono e noʻonoʻo ʻia ka pilikia o ka deformation ʻole i ka wā forging.

ʻO ka ratio forging ka mea maʻamau e ana i ka deformation i ka wā elongation. E pili ana ia i ka lakio o ka lōʻihi i ke anawaena o ka mea e hana ʻia, a i ʻole ka lakio o ka ʻāpana keʻa o ka mea maka (a i ʻole billet prefabricated) ma mua o ka hoʻopaʻa ʻana i ka ʻāpana cross-sectional o ka huahana i hoʻopau ʻia. Hoʻopili ka nui o ka ratio forging i nā waiwai mechanical o nā metala a me ka maikaʻi o nā forgings. ʻO ka hoʻonui ʻana i ka ratio forging he mea maikaʻi ia no ka hoʻomaikaʻi ʻana i ka microstructure a me nā waiwai o nā metala, akā ʻaʻole pono ka nui o ka forging ratios.

ʻO ke kumu o ke koho ʻana i ka ratio forging ʻo ke koho ʻana i kahi mea liʻiliʻi e like me ka hiki ke hōʻoia i nā koi like ʻole no ka forgings. Hoʻoholo ʻia ka ratio forging e like me kēia mau kūlana:

1. I ka wa kiʻekiʻe-koʻikoʻi kalapona structural kila a me ka huila structural kila ua noa forging ma ka hamare: no ka shaft type forgings, ua pololei forgings lakou mai ke kila ingots, a me ka forging lākiō helu ma muli o ka pauku nui e ≥ 3; ʻO ka lakio forging i helu ʻia ma muli o nā flanges a i ʻole nā ​​​​ʻāpana ʻokoʻa ʻē aʻe he ≥ 1.75; I ka hoʻohana ʻana i nā pila kila a i ʻole nā ​​​​mea i ʻōwili ʻia, ʻo ka ratio forging i helu ʻia ma muli o ka ʻāpana nui ʻo ≥ 1.5; ʻO ka lakio forging i helu ʻia e pili ana i nā flanges a i ʻole nā ​​​​ʻāpana kūwaho ʻē aʻe he ≥ 1.3. No ke apo forgings, pono ka lakio forging ≥ 3. No ka disc forgings, ua hana pololei ia lakou mai ke kila kila, me ka upsetting forging ratio o ≥ 3; I nā manawa ʻē aʻe, ʻo ka nui o ka hoʻopiʻi ʻana i ka lakene he> 3, akā ʻo ke kaʻina hope loa.

2. ʻAʻole pono e hoʻopau wale ka lole billet kila kila kiʻekiʻe i ka hoʻopau ʻana i kona mau hemahema, akā pono nō hoʻi e loaʻa i ka hāʻawi like ʻana o nā carbide, no laila pono e lawe ʻia kahi lakio forging nui. Hiki ke koho ʻia ka lakio forging o ke kila kila e like me 4-6, ʻoiai ʻo ka forging ratio o ke kila kiʻekiʻe ka wikiwiki e pono e 5-12.