Tungsten Carbide

ʻO ka manaʻo carbide i hoʻopaʻa ʻia: he mea hoʻohui i hana ʻia e ka pauka metala i loaʻa i kahi pūhui metala refractory (paʻakikī paʻakikī) a me metala paʻa (paʻa paʻa).

ʻO ka matrix o ka carbide i hoʻopaʻa ʻia he ʻelua ʻāpana: ʻO kekahi ʻāpana ka pae paʻakikī: ʻO kekahi ʻāpana ʻo ka metala paʻa.

ʻO ka māhele paʻakikī ka carbide o nā metala hoʻololi i ka papaʻaina o nā mea, e like me ka tungsten carbide, titanium carbide, tantalum carbide, he mea paʻakikī loa a loaʻa kahi helu hoʻoheheʻe ma mua o 2000 ℃, a ʻoi aku ma mua o 4000 ℃.Eia kekahi, ʻo ka transition metal nitrides, borides, silicides kekahi mau waiwai like a hiki ke hoʻohana ʻia e like me nā pae paʻakikī i ka carbide cemented.ʻO ka heleʻana o ka māhele paʻakikī e hoʻoholo i ka paʻakikī kiʻekiʻe loa a me ke kū'ēʻana o ke kaula.

ʻO nā metala paʻa he mau metala hui hao, maʻamau ka cobalt a me ka nickel.No ka hana ʻana i ka carbide cemented, koho ʻia ka pauka maka me ka nui o ka nui ma waena o 1 a me 2 microns a me kahi kiʻekiʻe o ka maʻemaʻe.Hoʻopili ʻia nā mea maka e like me ka ratio i kuhikuhi ʻia, i hoʻohui ʻia i ka waiʻona a i ʻole nā ​​​​mea ʻē aʻe i loko o ka wili pōpō pulu, wili pulu, i hui pū ʻia, ʻokiʻoki, maloʻo, kānana a hoʻohui ʻia i ka wax a me nā ʻano ʻano ʻē aʻe. nā mea hana, a laila maloʻo, kānana a hana ʻia i hui ʻia.A laila e hoʻopili ʻia ka hui ʻana, kaomi ʻia a hoʻomehana ʻia a kokoke i ka helu heheʻe o ka metala i hoʻopaʻa ʻia (1300 ~ 1500 ℃), ka pae paʻakikī a me ka metala i hoʻopaʻa ʻia e hana i kahi eutectic alloy.Ma hope o ka hoʻoluʻu ʻana, puʻunaue ʻia ka māhele paʻakikī i loko o ka lattice i haku ʻia me ka metala i hoʻopaʻa ʻia a pili pono kekahi i kekahi e hana i kahi paʻa paʻa.ʻO ka paʻakikī o ka carbide cemented e pili ana i ka maʻiʻo o ka pae paʻakikī a me ka nui o ka palaoa, ʻo ia hoʻi ke kiʻekiʻe o ka maʻiʻo paʻakikī a ʻoi aku ka maikaʻi o ka nui o ka palaoa, ʻoi aku ka paʻakikī.Hoʻoholo ʻia ka paʻakikī o ka carbide i hoʻopaʻa ʻia e ka metala paʻa, a ʻoi aku ka kiʻekiʻe o ka ʻike metala paʻa, ʻoi aku ka nui o ka ikaika kulou.

ʻO nā hiʻohiʻona kumu o ka carbide cemented:
1) ʻO ka paʻakikī kiʻekiʻe, ke kūpaʻa kiʻekiʻe
2) High modulus o ka elasticity
3) Ka ikaika compressive kiʻekiʻe
4) Paʻa kemika maikaʻi (acid, alkali, kiʻekiʻe kiʻekiʻe ka pale ʻana i ka hoʻoemi ʻana)
5) ʻO ka paʻakikī haʻahaʻa haʻahaʻa
6) Haʻahaʻa haʻahaʻa o ka hoʻonui, thermal a me ka uila conductivity e like me ka hao a me kāna mau ala

Nā mea hoʻohana carbide Cemented: nā mea paahana hou, nā mea paʻa pale, nā mea wela kiʻekiʻe a me nā mea ʻino.

Nā pōmaikaʻi o nā mea hana carbide (hoʻohālikelike ʻia me ke kila kila):
1) Exponentially, mau haneli a i ʻole haneli mau manawa e hoʻomaikaʻi i ke ola mea hana.
Hiki ke hoʻonui ʻia ke ola o ka mea hana metala e 5-80 mau manawa, hoʻonui ʻia ke ola gage e 20-150 mau manawa, hoʻonui ʻia ke ola mold e 50-100 mau manawa.
2) E hoʻonui i ka wikiwiki o ka ʻoki metala a me ka wikiwiki o ka hoʻoheheʻe ʻana i ka crust me ka nui o nā manawa he ʻumi.
3) E hoʻomaikaʻi i ka pololei o ka dimensional a me ka pau ʻana o ka ʻili o nā ʻāpana mīkini.
4) Hiki ke hana paʻakikī i nā mea mīkini e like me ke koena wela, ka hopena hopena a me ka hao hoʻoheheʻe paʻakikī, paʻakikī ke hana ʻia e ke kila kiʻekiʻe.
5) Hiki iā ia ke hana i kekahi mau ʻāpana pale ʻana i ka corrosion a i ʻole ka wela wela, no laila e hoʻomaikaʻi ai i ka pololei a me ke ola o kekahi mau mīkini a me nā mea kani.

Hoʻokaʻawale ʻia o ka Carbide Cemented:
1. WC-Co (tungsten drill) type alloy: i hakuia me ka tungsten carbide a me ka cobalt.I kekahi manawa i loko o ka mea hana ʻoki (i kekahi manawa i ka mea hana alakaʻi) e hoʻohui i 2% a i ʻole ka liʻiliʻi o nā carbide ʻē aʻe (tantalum carbide, niobium carbide, vanadium carbide, etc.) i mea hoʻohui.Kiʻekiʻe kobalt: 20-30%, waena kobalt: 10-15%, haʻahaʻa kobalt: 3-8%
2. WC-TiC-Co (tungsten-iron-cobalt) -type alloy.
Haʻahaʻa titanium alloy: 4-6% TiC, 9-15% Co
Medium Chin alloy:10-20% TiC, 6-8% Co
Kiʻekiʻe titanium huila: 25-40% TiC, 4-6% Co
3.WC-TiC-TaC(NbC)-Co nā huila.
ʻOi aku ka maikaʻi o ka WC-TiC-Co alloy i ʻoi aku ka maikaʻi o ka pale ʻana i ka wela wela a ʻoi aku ka maikaʻi o ka haʻalulu wela, no laila ʻoi aku ka nui o ke ola mea hana.TiC:5-15%, TaC(NbC):2-10%, Co:5-15%, ʻo WC ke koena.
4. Ke kila cemented carbide: i haku ʻia me ka tungsten carbide a i ʻole ka titanium carbide a me ke kila kalapona a i ʻole ke kila kila.
5. Titanium carbide ma muli o ka hao: i haku ʻia me ke kalapona ma mua o ka titanium, metala nickel a me ka metala molybdenum a i ʻole ka molybdenum carbide (MoC).ʻO ka nui o ka nickel a me ka molybdenum he 20-30%.

Hiki ke hoʻohana ʻia ka Carbide e hana i ka rotary burr, CNC blades, milling cutters, circular knives, slitting knives, woodworking blades, saw blades, carbide rods, etc.