ʻO kaʻokoʻa ma waena o ke kila kiʻekiʻe a me ke kila kila

ʻO ke kila kiʻekiʻe ka wikiwiki o ke kila kila paʻa, i loko o laila ka carbide e hoʻokumu ana i nā mea like me tungsten, molybdenum, chromium, vanadium, a me cobalt. ʻO ka nui o nā ʻāpana alloying e pili ana iā 10-25%. Hiki iā ia ke mālama i ka ʻoʻoleʻa kiʻekiʻe ke hana ʻia ka wela nui e ka ʻoki wikiwiki ʻana (ma kahi o 500 ℃), a hiki i ka HRC ma luna o 60. ʻO kēia ke ʻano nui o ka paʻakikī kila kila ʻulaʻula. Ma hope o ke kinai ʻia ʻana a me ka hoʻonāukiuki ʻia i ka mahana haʻahaʻa, ʻoi aku ka paʻakikī o ke kila kila ma ke ana wela, akā ke kiʻekiʻe ka mahana ma mua o 200 ℃, hāʻule ka paʻakikī, a ua hāʻule ka paʻakikī ma 500 to i kahi pae e like me ka moku annealed . , Lilo loa i ka hiki ke 'oki i nā mea hao, kahi e kaupalena ai i ka hoʻohanaʻana o ke kila kila mea hana kila e hana i nā mea hana oki. ʻO ke kila kiʻekiʻe, no ka paʻakikī o ka ʻulaʻula maikaʻi, hana i nā hemahema make o ke kila kila kila.

Hoʻohana nui ʻia ke kila kiʻekiʻe e hana i nā mea hana ʻoki lahilahi lahilahi a me ka hopena. Hiki iā ia ke hana i ka mahana wela e halihali anas a me ke anuanu extrusion make, e like me ka hoʻohuli i nā pono hana, drills, hobs, mīkini ʻike pahi, a koi koi mōlina.

ʻO Tungsten kila (paʻa paʻa) kahi moʻo o nā waiwai maikaʻi e like me ka paʻakikī kiʻekiʻe, pale i ke kūpaʻa, ikaika maikaʻi a me ka paʻakikī, kūpaʻa wela a me ke kūpaʻa kūwaha, ʻoi aku kona paʻakikī kiʻekiʻe a ʻaʻa pale, ʻoiai ma kahi mahana o 500 ℃ Noho mau ʻole. paʻakikī paʻakikī kiʻekiʻe loa ma 1000 ℃.

ʻO ke kila Tungsten, nona ka ʻāpana nui he tungsten carbide a me cobalt, no 99% o nā ʻāpana āpau, a ʻo 1% nā metala ʻē aʻe, no laila ua kapa ʻia ia ʻo ke kila tungsten, i ʻike ʻia hoʻi me ka carbide sima, a manaʻo ʻia ʻo ia nā niho o ka ʻoihana hou. .
ʻO Tungsten kila kahi mea hoʻohui i hoʻohui ʻia i haku ʻia ma kahi o hoʻokahi karbida hao. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, a me tantalum carbide nā mea maʻamau o ke kila tungsten. ʻO ka nui o ka palaoa o ka mea carbide (a i ʻole ka pae) ma waena o 0.2-10 microns, a hoʻopili pū ʻia nā huaʻāpona i ka hoʻohana ʻana i ka mea hoʻopaʻa mea hao. ʻO ka mea hoʻopaʻa paʻa he hao hao hao, a hoʻohana pinepine ʻia ka cobalt a me ka nikala. No laila aia nā ʻāpana tungsten-cobalt alloys, tungsten-nickel alloys a me tungsten-titanium-cobalt alloys.

Tungsten kila sinting mōlina mea e kaomi i ka pauka i loko o ka hakahaka, a laila wela ia i loko o ka sintering umu i kekahi wela (sinter wela), malama ia no kekahi manawa (e paa ana manawa), a laila cool ia ia e kiʻi i ka tungsten kila mea me ka hana i koi ʻia.

①Tungsten-cobalt sima paʻakai

ʻO nā mea nui ka tungsten carbide (WC) a me ka binder cobalt (Co). Hoʻokomo ʻia ka papa o "YG" (nā hua mua o ka pinyin Kina o "paʻakikī a cobalt") a me ka pākēneka o ka ʻikepili cobalt awelika. ʻO kahi laʻana, ʻo YG8 ke kumu o ka awelika WCo = 8%, a ʻo ke koena he tungsten-cobalt cemented carbide o ka tungsten carbide.

②Tungsten-titanium-cobalt kalima kōmi

ʻO nā mea nui ka tungsten carbide, ka titanium carbide (TiC) a me ka cobalt. ʻO ka papa ʻo "YT" (nā hua mua o ka pinyin Kina o "paʻakikī a titanium") a me ka ʻike awelika o ka titanium carbide. ʻO kahi laʻana, ʻo YT15 ka manaʻo o ka awelika TiC = 15%, a ʻo ke koena he tungsten carbide a me ka cobalt tungsten-titanium-cobalt ciment carbide.

③Tungsten-titanium-tantalum (niobium) paʻa paʻa

ʻO nā mea nui ka tungsten carbide, ka titanium carbide, tantalum carbide (a i ʻole ka niobium carbide) a me ka cobalt. Kāhea ʻia kēia ʻano karbida sima i kapa ʻia he karbida mau sima i hoʻohui ʻia a i ʻole he karbida sima kūwaho. Hoʻokomo ʻia ka papa o "YW" (nā hua mua o ka Chinese Pinyin o "paʻakikī" a me "万") me kahi helu kaʻina, e like me YW1.

ʻO ke kila kila he ʻano maikaʻi loa e like me ke ʻoʻoleʻa kiʻekiʻe, ʻaʻa pale, ikaika ikaika a me ka ʻoʻoleʻa, kūpaʻa wela a me ke kūpaʻa kūwaha, ʻo ia hoʻi kona paʻakikī kiʻekiʻe a ʻaʻa pale, kahi mea i hoʻololi ʻole ʻia ma kahi mahana o 500 ° C. He paʻakikī paʻakikī kona ma 1000 ° C. Hoʻohana ākea ʻia ka carbide cemented ma ke ʻano he mea, e like me ka hoʻohuli ʻana i nā pono hana, nā mea ʻoki mīkini, nā ʻāpana drill, nā mea hōʻoki luhi, a pēlā aku. ʻO ka wikiwiki o ka ʻoki ʻana o ka carbide hou i hoʻopaʻa ʻia he mau haneli mau manawa o ke kila kalapona.

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