ʻenehana hana o ka pā tungsten

ʻO ka powder metallurgy tungsten ka mea maʻamau i ka palaoa maikaʻi, koho ʻia kona blank e ke kiʻekiʻe kiʻekiʻe o ka hoʻoulu ʻana a me ke ʻano o ka ʻōwili ʻana, ke hoʻomalu ʻia ka mahana ma waena o 1500 ~ 1600 ℃.Ma hope o ka hakahaka, hiki ke ʻōwili hou ʻia ka tungsten, hana ʻia a milo paha.Hoʻohana pinepine ʻia ka mīkini paʻi ma lalo o ka mahana recrystallization, no ka mea he brittle nā ​​palena o ka tungsten recrystallized, e kaupalena ana i ka hana.No laila, me ka hoʻonui ʻana i ka nui o ka hoʻoili ʻana o ka tungsten, e emi ana ka mahana deformation e like me ia.
Hiki ke hoʻokaʻawale ʻia ʻo Tungsten plate rolling i ka ʻōwili wela, ka ʻōwili mahana a me ka ʻōwili anuanu.Ma muli o ke kū'ē nui o ka tungsten, ʻaʻole hiki i nā wili maʻamau ke hoʻokō pono i nā koi o nā papa tungsten rolling, ʻoiai e hoʻopili ʻia nā ʻōwili i hana ʻia i nā mea kūikawā.I ke kaʻina hana ʻōwili, pono e hoʻomaʻamaʻa ʻia nā wili, a ʻo ka mahana preheating he 100 ~ 350 ℃ e like me nā ʻano ʻōwili like ʻole.Hiki ke hoʻohana ʻia nā blanks wale nō ke kiʻekiʻe ke kiʻekiʻe o ka pili (ka lākiō o ka density maoli i ka theoretical density) ma mua o 90%, a loaʻa ka processibility maikaʻi i ka density o 92 ~ 94%.ʻO ka mahana wela tungsten he 1,350 ~ 1,500 ℃ i ke kaʻina ʻōwili wela;inā koho pono ʻole ʻia nā ʻāpana kaʻina deformation, e waiho ʻia nā blanks.ʻO ka mahana hoʻomaka o ka ʻōwili mehana he 1,200 ℃;Hiki i nā papa ʻōwili wela 8mm mānoanoa ke hiki i ka mānoanoa o 0.5mm ma o ka ʻōwili mehana.He kiʻekiʻe nā papa Tungsten i ke kūʻē deformation, a hiki ke kūlou a hoʻololi ʻia ke kino o ka roller i ke kaʻina o ka ʻōwili ʻana, no laila e hana nā papa i ka mānoanoa like ʻole ma ka ʻaoʻao ākea, a hiki ke haki ʻia ma muli o ka deformation like ʻole o nā mea āpau. nā ʻāpana i loko o ke kaʻina hoʻololi wili a i ʻole ka wili wili.ʻO ka mahana hoʻololi brittle-ductile o nā papa 0.5mm-mānoanoa ka lumi wela a i ʻole ke kiʻekiʻe ma mua o ka mahana o ka lumi;me ka brittleness, pono e olokaa na pepa i 0.2mm-mānoanoa pepa ma ka wela o 200 ~ 500 ℃.I ka wā hope o ka ʻōwili ʻana, lahilahi a lōʻihi nā ʻāpana tungsten.No ka hōʻoia ʻana i ka hoʻomehana ʻana o nā papa, ua uhi ʻia ka graphite a i ʻole molybdenum disulphide, ʻaʻole ia he mea pono no ka hoʻomehana ʻana o nā papa akā he hopena lubricating hoʻi i ke kaʻina hana.