Ke koho ʻana i ka hana annealing no ka pepa keleawe

ʻO ka mahana hoʻololi māhele opepa keleawemai ka α→α+ ε e pili ana i 320 ℃, ʻo ia hoʻi, ʻoi aku ka kiʻekiʻe o ka mahana wela ma mua o 320 ℃, ʻo ke ʻano he hoʻolālā hoʻokahi-phase, a hiki i ka wela i 930 ℃ a i ʻole ke ʻano o ka pae wai, e noʻonoʻo ana i ka hoʻohana ʻana i nā mea hana, ke degere. o ka oxidation o ka mea hana ma hope o ka hoʻomehana ʻana a me ka hana maoli ʻana o ka mea hana ma hope o ka mālama wela a me nā waiwai ʻē aʻe.He kiʻekiʻe loa ka mahana wela, he koʻikoʻi ka oxidation mea hana.He haʻahaʻa loa ka mahana, he kiʻekiʻe ka ikaika o ka mea hana a me ka elasticity a ʻaʻole lawa ka paʻakikī, ʻaʻole kūpono no ka hana ʻana.

Ma muli o ka nui o ka umu, i mea e hana ai i ka dithermal a loaʻa i kahi ikaika a me ka paʻakikī, i mea e hoʻomaʻamaʻa ai i ka hoʻoili ʻana ma hope, ʻo kēlā me kēia umu workpiece i ka mahana pono e paʻa ma kahi o 2h, a laila hiki ke hoʻomaʻamaʻa ʻole ʻia. hiki no hoi ke waiho i ka mea hana i loko o ka tempering barela malie malie.ʻO ka maʻamau, hiki ke ʻike ʻia ka mea hana i hana ʻia e nā ʻano ʻelua.ʻO kekahi e nānā i ke kala o ka mea hana, ʻo ia hoʻi, ka mea hana i hana ʻia mai ke kala keleawe kumu i ka kala uliuli, ma muli o ka oxidation a ma ka ʻili o ka workpiece e hana i ka 2 ~ 3μm mānoanoa oxide papa, maʻalahi e hāʻule.

ʻO ka lua, hiki ke hana pololei ʻia ka mea hana ma ka kulou lima e hoʻokaʻawale.I ka wā e kulou ai, inā manaʻo ka mea hana i kahi ikaika a me ka elasticity, akā hiki ke kūlou, a laila maikaʻi ka hopena annealing, kūpono no ka hana ʻana.ʻO ka mea ʻē aʻe, ʻoi aku ka kiʻekiʻe o ka ikaika a me ka elasticity o ka mea hana ma hope o ka mālama ʻana, a ʻaʻole maʻalahi ke kulou me ka lima, e hōʻike ana he ʻilihune ka hopena o ka hana annealing, a pono e hoʻopili hou ʻia.

I mea e hoʻokō ai i ke kumu o ka mahana like ʻole a me ka oxidation, ʻaʻole kūpono ka hana ʻana i loko o ka pahu pahu me ka ʻole o ka hoʻoulu ʻana i ka peʻahi.No ka laʻana, ma lalo o ke ʻano o ka nui o ka umu, mālama ʻia ka mea hana i loko o ka pahu pahu me ka ʻole o ka hoʻoulu ʻana i ka peʻahi a me ka luawai me ka hoʻoulu ʻana i ka peʻahi.

He ʻokoʻa ka luster, ka ikaika kiʻekiʻe a me ka paʻakikī ʻole ka paʻakikī o ka paʻi keleawe keleawe i mālama ʻia e ka pahu pahu.Ma hope o ka hoʻomaʻamaʻa ʻana i ka lua ahi o ka pūʻulu like o ka mea hana, ua like ka luster, kūpono ka ikaika a me ka paʻakikī, e kūpono ana i nā hana hana ma hope.