I ke kaʻina hana hoʻoheheʻe ʻia, ma muli o ka dosing kūpono ʻole a i ʻole ka hoʻopiʻi ʻana a me ka nui o ka decarbonization a me nā kumu ʻē aʻe, i kekahi manawa ʻaʻole i hoʻokō ka carbon content i ke kila a i ʻole i nā koi i manaʻo ʻia, a laila pono e carburize ke kila a i ʻole ka hao wai.ʻO nā mea nui i hoʻohana mau ʻia no ka carburizing ʻo ka pauka anthracite, ka hao puaʻa carburized, ka pauka electrode, ka pauka coke petroleum, ka coke asphalt, ka pauka lanahu a me ka pauka coke.ʻO nā koi no ka carburizer,ʻo kaʻoi aku o ke kiʻekiʻe o ke kalapona paʻa,ʻoi aku ka maikaʻi, a me ka haʻahaʻa o nā meaʻinoʻino e like me ka lehu, ka mea volatile a me ka sulfur,ʻoi aku ka maikaʻi, iʻole e hoʻohaumia i ke kila.
Hoʻohana ka hoʻoheheʻe ʻana i ka hoʻoheheʻe ʻana i ka recarburizer kiʻekiʻe ma hope o ka hoʻomoʻa ʻana o ka ʻaila coke me ka liʻiliʻi o nā haumia, ʻo ia ka loulou nui loa i ka hana carburizing.Hoʻoholo ka maikaʻi o ka recarburizer i ka maikaʻi o ka hao wai, a hoʻoholo pū inā hiki ke loaʻa ka hopena graphitization.I ka pōkole, ho'ēmi i ka hao shrinkage recarburizer pāʻani koʻikoʻi.
Ke hoʻoheheʻe ʻia ke kila ʻōpala a pau i loko o ka umu uila, ʻoi aku ka maikaʻi o ka recarburizer i graphitized, a ʻo ka recarburizer i kiʻi ʻia i ka wela kiʻekiʻe hiki ke hoʻololi i nā ʻātoma kalapona mai ka hoʻonohonoho mua ʻana i ka hoʻonohonoho pepa, a hiki i ka pepa graphite ke lilo i mea maikaʻi loa. kumu o ka nucleation graphite e paipai i ka graphitization.No laila, pono mākou e koho i kahi recarburizer i mālama ʻia me ka graphitization kiʻekiʻe.Ma muli o ke kiʻekiʻe kiʻekiʻe wela graphitization lapaʻau, ka sulfur maʻiʻo ua hana SO2 kinoea pakele a emi.No laila, he haʻahaʻa loa ka ʻike sulfur o ka recarburizer kiʻekiʻe, ʻoi aku ka liʻiliʻi ma mua o 0.05%, a ʻoi aku ka maikaʻi ma mua o 0.03%.Ma ka manawa like, he hōʻailona kūʻokoʻa kēia no ka mālama ʻia ʻana me ka graphitization kiʻekiʻe a inā maikaʻi ka graphitization.Inā ʻaʻole i graphitized ka recarburizer i koho ʻia ma ke kiʻekiʻe wela, ua hoʻemi nui ʻia ka hiki o ka nucleation o ka graphite, a nāwaliwali ka hiki o ka graphitization, ʻoiai inā hiki ke hoʻokō ʻia ka nui o ke kalapona, akā ʻokoʻa loa nā hopena.
ʻO ka mea i kapa ʻia ʻo recarburizer e hoʻonui pono i ka ʻike kalapona i loko o ka hao wai ma hope o ka hoʻohui ʻana, no laila ʻaʻole pono e haʻahaʻa loa ka ʻike kalapona paʻa o ka recarburizer, i ʻole e hoʻokō i kahi ʻano kalapona, pono ʻoe e hoʻohui i nā huahana hou aku ma mua o ke kiʻekiʻe. -carbon recarburizer, ka mea kānalua e hoʻonui i ka nui o nā mea maikaʻi ʻole i loko o ka carburizer, i hiki ʻole ai i ka hao wai ke loaʻa ka hoʻihoʻi maikaʻi.
ʻO ka sulfur haʻahaʻa, ka nitrogen a me nā mea hydrogen ke kī e pale ai i ka hana ʻana o nā pores nitrogen i nā castings, no laila e koi ʻia ka haʻahaʻa o ka recarburizer e like me ka hiki.
ʻO nā hōʻailona ʻē aʻe o ka recarburizer, e like me ka nui o ka moisture, lehu, volatiles, ka haʻahaʻa o ka nui o ka carbon paʻa, ʻoi aku ka kiʻekiʻe o ka carbon paʻa, no laila ke kiʻekiʻe o ke kalapona paʻa, ʻaʻole pono ka ʻike o kēia mau mea ʻino. kiʻekiʻe.
No nāʻano hoʻoheheʻe likeʻole, nāʻano kapuahi a me ka nui o ka umu hoʻoheheʻe, he mea nui hoʻi e koho i ka nui o ka'āpana recarburizer pono, hiki ke hoʻonui maikaʻi i ka helu absorption a me ka absorption rate o ka recarburizer i ka hao wai, a pale i ka oxidation a ka poho o ka carburizer ma muli o ka liʻiliʻi o ka nui o ka ʻāpana.ʻOi aku ka maikaʻi o kona nui: 100kg ka umu ma lalo o 10mm, 500kg ka umu ma lalo o 15mm, 1.5 ton umu ma lalo o 20mm, 20 ton umu ma lalo o 30mm.I ka ho'ohehe'e 'ana, ke ho'ohana 'ia ke kila kalapona ki'eki'e, ho'ohana 'ia ka recarburizer me ka li'ili'i o nā haumia.ʻO nā koi no ka recarburizer i hoʻohana ʻia i ka mea hoʻololi i ka mea hoʻololi kiʻekiʻe he kalapona paʻa kiʻekiʻe, haʻahaʻa maʻiʻo o ka lehu, volatile a me ka sulfur, phosphorus, nitrogen a me nā mea haumia ʻē aʻe, a maloʻo, maʻemaʻe, ka nui o ka nui.Kona kalapona paʻa C≥96%, volatile maʻiʻo ≤1.0%, S≤0.5%, moisture ≤0.5%, particle nui ma 1-5mm.Inā ʻoi aku ka maikaʻi o ka nui o ka ʻāpana, ua maʻalahi ke puhi ʻana, a inā ʻoi aku ke koʻikoʻi, lana ia ma ka ʻili o ke kila wai a ʻaʻole maʻalahi ke komo ʻia e ke kila hoʻoheheʻe.No ka nui o ka nui o ka umu induction i 0.2-6mm, nona ka nui o ke kila a me nā mea hao ʻeleʻele ʻē aʻe i 1.4-9.5mm, pono ke kila kalapona kiʻekiʻe i ka nitrogen haʻahaʻa, ka nui o ka nui ma 0.5-5mm a pēlā aku.ʻO ka pono kikoʻī e like me ke ʻano o ka umu hoʻoheheʻe ʻana i ke ʻano hana a me nā kikoʻī ʻē aʻe i ka hoʻoholo a me ke koho.
Ka manawa hoʻouna: ʻAukake-25-2023