Hoʻohana i nā mea kila kiʻekiʻe

ʻO ka mea paahana kila kiʻekiʻe ka nui o nā ʻāpana kumu ʻelua:ʻO kekahi ka carbide metala (tungsten carbide, molybdenum carbide a i ʻole vanadium carbide), ka mea e hāʻawi ai i ka mea paahana i ke kūpaʻa maikaʻi;ʻO ka lua, ʻo ia ka matrix kila i puʻunaue ʻia a puni ia, kahi e ʻoi aku ka paʻakikī o ka mea hana a me ka hiki ke komo i ka hopena a pale i ka ʻāpana.
Uaʻikeʻia ka nui o ka palaoa o ke kila kiʻekiʻe ka mana nui i nā waiwai o ke kila kiʻekiʻe.ʻOiai ʻo ka hoʻonui ʻana i ka nui o nā ʻāpana carbide metala i ke kila hiki ke hoʻomaikaʻi i ke kūpaʻa ʻana o ka mea, me ka hoʻonui ʻana o ka ʻike alloy, e hoʻonui pū ka nui o ka carbide a me ka helu o nā agglomerates, e loaʻa i kahi hopena maikaʻi loa i ka paʻakikī. o ke kila, no ka mea, e lilo koke ana na hui carbide nui i wahi hoomaka o na mawae.No laila, ua hana mua nā ʻāina ʻē i ka noiʻi ʻana e ʻimi i ka palaoa maikaʻi o ke kila kiʻekiʻe.
I ka hopena o nā makahiki 1960, ua hoʻomohala maikaʻi ʻia ke kaʻina hana hana kila kiʻekiʻe kiʻekiʻe o ka pauka ma Suedena a komo i ka mākeke i nā makahiki 1970.Hiki i kēia kaʻina hana ke hoʻohui i nā mea hoʻohui i loko o ke kila kiʻekiʻe me ka ʻole e hōʻino i ka ikaika, ka paʻakikī a i ʻole ka grindability o ka mea, i hiki ai i ka mea hana me ka paʻakikī kiʻekiʻe, ke kūpaʻa kiʻekiʻe, hiki ke hoʻopaʻa i ka hopena ʻokiʻoki, a kūpono no ka hana ʻoki kiʻekiʻe. a hiki ke hana ʻia ka ʻoki ʻoki ʻana.Eia nō naʻe, hoʻohui ia i ka paʻakikī maikaʻi o ke kila kiʻekiʻe me ka pale lole kiʻekiʻe o ka carbide cemented.Ma muli o ka hāʻawi maikaʻi ʻana o nā ʻāpana carbide i loko o ka pauka metallurgy kila kiʻekiʻe, ua hoʻomaikaʻi maikaʻi ʻia kona ikaika a me kona paʻakikī i ka hoʻohālikelike ʻia me ke kila kiʻekiʻe maʻamau me ka maʻi carbide like.Me kēia pono, kūpono loa nā mea hana kila kiʻekiʻe kiʻekiʻe o ka pauka no nā manawa mīkini me ka hopena ʻoki nui a me ke kiʻekiʻe o ka wehe ʻana o ka metala (e like me ka ʻoki flexure, intermittent cut, etc.).Eia kekahi, no ka mea, ʻaʻole e hoʻonāwaliwali ʻia ka ikaika a me ka paʻakikī o ka pauka metallurgy kiʻekiʻe kiʻekiʻe e ka hoʻonui ʻana i ka ʻenehana carbide metala, hiki i nā mea hana kila ke hoʻohui i ka nui o nā mea hao i ke kila e hoʻomaikaʻi ai i ka hana o nā mea hana.I ka manawa like, no ka mea, he waiwai hoʻolālā nā kumu waiwai tungsten (W), a hoʻohana nā carbides cemented hou i nā kumu waiwai tungsten i ka nui, ua lilo ka haʻahaʻa haʻahaʻa-tungsten kiʻekiʻe-wikiwiki i alakaʻi no ka noiʻi a me ka hoʻomohala kiʻekiʻe.Ua hoʻomohala ʻia ke kila kiʻekiʻe me ka cobalt (HSS-Co) i kahi helu nui ma nā ʻāina ʻē.Ma hope mai, ua ʻike ʻia ma ke ao holoʻokoʻa ʻo ke kila kiʻekiʻe i loaʻa i ka cobalt me ​​ka ʻoi aku ma mua o 2% cobalt content he kila kiʻekiʻe kiʻekiʻe (HSSE).ʻO Cobalt kekahi hana maopopo i ka hoʻomaikaʻi ʻana i ka hana o ke kila kiʻekiʻe.Hiki iā ia ke hoʻoikaika i ka carbide e hoʻoheheʻe hou aku i ka matrix i ka wā e hoʻopau ai a me ka hoʻomehana ʻana, a hoʻohana i ka paʻakikī matrix kiʻekiʻe e hoʻomaikaʻi i ke kūpaʻa ʻaʻahu.ʻO ke kila kiʻekiʻe ka paʻakikī maikaʻi, ka paʻakikī wela, ke kūpaʻa a me ka grindability.ʻO ka ʻike cobalt o ke kila kiʻekiʻe kiʻekiʻe o ka cobalt maʻamau i ka honua he 5% a me 8%.No ka laʻana, W2Mo9Cr4VCo8 (American brand M42) ua hōʻike ʻia e ka haʻahaʻa vanadium maʻiʻo (1%), kiʻekiʻe cobalt maʻiʻo (8%) a me ka wela wela o 67-70HRC.Eia nō naʻe, hoʻohana ʻia nā ʻano hana lapaʻau kūikawā no ka loaʻa ʻana o ka paʻakikī 67-68HRC, kahi e hoʻomaikaʻi ai i kāna hana ʻokiʻoki (ʻoi loa ka ʻoki ʻana) a hoʻomaikaʻi i ka paʻakikī o ka hopena.Hiki ke hana ʻia ke kila kiʻekiʻe ʻo Cobalt i nā mea hana like ʻole, hiki ke hoʻohana ʻia e ʻoki i nā mea paʻakikī i ka mīkini me ka hopena maikaʻi.Ma muli o kāna hana wili maikaʻi, hiki ke hana ʻia i mea paʻakikī, i hoʻohana nui ʻia ma ka honua.Eia nō naʻe, pōkole ʻo Kina i nā kumuwaiwai cobalt, a ʻo ke kumukūʻai o ke kila kiʻekiʻe kiʻekiʻe ke kumukūʻai, ma kahi o 5-8 mau manawa o ke kila kiʻekiʻe maʻamau.