Refractory ke hooheheeia. XIX. 'Ike e pili ana i tungsten.

Refractory ke hooheheeia - he hōʻuluʻulu manaʻo

Nui, e e hoomaopopo olelo o "refractory ke hooheheeia" i kēia mau mea i eliiaʻi i i ke kiʻekiʻe loa mahele heheʻe i ka wela, ka mea i hiki 4000 ° C. Molybdenum, tantalum, tungsten, niobium a me ka rhenium - walaʻauʻana refractory ke hooheheeia. I keia papa hiki ke huiia, a me na mea e ae - chromium, vanadium, osmium, hafnium, a me ka zirconium i eliiaʻi, ma ka mahele heheʻe i ka mahana kīnā 2123 ° C.

Refractory ke hooheheeia e hoihoi 'no kā lākou mau waiwai. Ke'ōlelo mai, no ka laʻana, nā hoailona o ka molybdenum a me ka tungsten paakiki hiki ai ke hoʻohana i kēia mau mea hiki ke hooheheeia no ka wela iapaau ana o ka mea ma lalo o holo. Products i o kekahi refractory ke hooheheeia i kū hoʻokahi waiwai, e laʻa me, tungsten filaments malamaia no filament mahana i ka 3073 ° C.

Akā, i ka ia'ku o refractory ke hooheheeia hiki e wahi ana i kā lākou mau papa kuhikuhiE keakea. Hoʻokaʻaʻike me ka o oxygen me ka nui loa ololi ma ka thermal waiwai o refractory ke hooheheeia. 'O kēia ke kumu i ka hoʻohana' ana o ke hooheheeia ma keia pae - i loko o ka 'ia ma ka mea hiki ke loa kaʻawale mai o ka lewa.

Tungsten - i ke kumu o refractory ke hooheheeia ma ka metallurgy

Tungsten o kekahi o ka loa refractory ke hooheheeia. Ka mahele heheʻe i ka wahi o ka tungsten o luna ma mua o ke koena, tungsten - kaumaha metala, he mea hiki ke huki maikai lopi, ka mea, ua hoi pono weldable. Tungsten mea pohihihi keia mea hiki ke hooheheeia, kona maʻiʻo ma ka pńpa wale 0,0055% kīnā, ka mea iʻaʻole i loaʻa i loko o ka poe pae, a ia mea,ʻaʻole i loaʻa i loko o ke kai. Akā, kona hiʻona mea i emi iki mahope o ia ka mea hiki ke hooheheeia emi pohihihi keia ke hooheheeia.

Ka hoʻohana o tungsten

Mea hao tungsten hoʻohana no ka manufacturing filament nā huakaʻi, a i hoʻohana ma o ka ho'ā nā maalea like me ka paio hahana maoli nō hehee ai - ma ka holo umu e kū'ē'ē mai. Ke kiʻekiʻe nuʻa o tungsten e leie aku ka hana o keia metala like me ka counterweight no kekahi mea lele. E like me ka tungsten'ūholo uila hoʻohana i TIG kuʻihao. I ka paa oka a pau o ka tungsten carbide e hoʻohana i filler.

Tungsten like molybdenum, a me ka tantalum ua hoʻohana 'ia e like me ka rula i loko o na oka a pau, i mea ia i māhele o ka makahiki nukelea' enehana. I ka hana, e hoole aku i ke kiʻekiʻe loa Mahana O Ke Kai - ka papa kuhikuhiE mea no i kēia mau oka a pau i hanaiaʻi o laua.