Tungsten: ʻO ka ʻuhane o ka ʻoihana koa

No ka ʻoihana pūʻali koa, ʻo ka tungsten a me kāna mau alloys he mea liʻiliʻi loa ia i nā kumuwaiwai hoʻolālā, kahi e hoʻoholo nui ai i ka ikaika o ka pūʻali koa o ka ʻāina.

No ka hana ʻana i nā mea kaua hou, ʻaʻole hiki ke hoʻokaʻawale ʻia mai ka hana metala.No ka hana metala, pono e loaʻa i nā ʻoihana koa nā pahi maikaʻi a me nā ʻano.Ma waena o nā mea metala i ʻike ʻia, hiki i ka tungsten ke hana i kēia hana koʻikoʻi.ʻOi aku kona wahi heheʻe ma mua o 3400°C.ʻO ka metala paʻa loa i ʻike ʻia, me ka paʻakikī o 7.5 (Mohs hardness), ʻo ia kekahi o nā metala paʻakikī loa.

ʻO ka mea mua ma ka honua i hoʻokomo i ka tungsten i loko o ke kahua ʻokiʻoki ʻo ia ka British Maschette.I ka makahiki 1864, ua hoʻohui ʻo Marchet i ka 5% o ka tungsten i ke kila mea hana (ʻo ia hoʻi, ke kila no ka hana ʻana i nā mea ʻoki ʻoki, nā mea ana, a me nā mold) no ka manawa mua, a ua hoʻonui nā mea hana i ka wikiwiki o ka ʻoki metala ma 50%.Mai ia manawa, ua hoʻonui ʻia ka wikiwiki o ka ʻoki ʻana i nā mea hana tungsten.No ka laʻana, ʻo ka wikiwiki o ka ʻoki ʻana i nā mea hana i hana ʻia me ka tungsten carbide alloy e like me ka mea nui hiki ke piʻi aku ma mua o 2000 m / min, ʻo ia ka 267 mau manawa o nā mea hana tungsten i loko o ke kenekulia 19..Ma kahi o ka wikiwiki ʻoki kiʻekiʻe, ʻaʻole e emi ka paʻakikī o nā mea hana tungsten carbide alloy ma kahi kiʻekiʻe o 1000 ℃.No laila, kūpono loa nā mea hana carbide alloy no ka ʻoki ʻana i nā mea paʻakikī i ka mīkini me nā mea hana ʻē aʻe.

ʻO nā mold i koi ʻia no ka hoʻoili ʻana metala i hana nui ʻia me ka tungsten carbide ceramic cemented carbide.ʻO ka pōmaikaʻi ʻo ia ka lōʻihi a hiki ke kuʻi ʻia ma mua o 3 miliona mau manawa, ʻoiai ʻo nā mea kila kila maʻamau e hiki ke kuʻi ʻia ma mua o 50,000 mau manawa.ʻAʻole ʻo ia wale nō, ʻaʻole maʻalahi ke ʻaʻahu ʻana i ka tungsten carbide ceramic cemented carbide, no laila pololei loa ka huahana punched.

Hiki ke ʻike ʻia he hopena koʻikoʻi ka tungsten i ka ʻoihana hana mea hana o ka ʻāina.Inā ʻaʻohe tungsten, e alakaʻi ia i ka emi nui o ka hana ʻana o ka ʻoihana hana hana, a i ka manawa like, e hoʻopau ʻia ka ʻoihana hana.