ʻokoʻa haku mele
Hoʻohana nā kobalt-based alloys i ka cobalt (Co), chromium (Cr), molybdenum (Mo), a me nā mea ʻē aʻe ma ke ʻano he kumu nui, ʻo ia ka helu o ka cobalt no kahi ʻoi aʻe, a ua hoʻohui pū ʻia kekahi nui o ka hao (Fe), carbon (C) a me nā mea ʻē aʻe; nickel-based Hoʻohana ka alloy i ka nickel (Ni) ma ke ʻano nui, a hoʻohui pū i ka chromium (Cr), molybdenum (Mo), keleawe (Cu), titanium (Ti), niobium (Nb) a me nā mea ʻē aʻe.
Nā ʻokoʻa o ka hiki ke hana
Loaʻa i nā mea hoʻoheheʻe ʻia ʻo Cobalt ka hana paʻakikī a me ka hoʻoheheʻe ʻana i nā waiwai, a ua maʻalahi ke hana ʻia i nā ʻano like ʻole. He kūpono lākou no ka hana ʻana i nā ʻāpana me ka hoʻohana ʻana i nā alloys pili cobalt. Loaʻa i nā mea hoʻoheheʻe Nickel i ke kaʻina hana maikaʻi a maʻalahi hoʻi e hana, extrusion a me ka hana rotor, a kūpono i nā ʻāpana mīkini. Ka hoʻomohala ʻana a me ka hoʻomaikaʻi ʻana i nā mīkini mana kiʻekiʻe me ka hoʻohana ʻana i nā alloys nickel-based.
1.Heat lapaʻau: Pono nā ʻāpana wela kiʻekiʻe ʻelua i ka mālama wela. Hoʻohana lāua ʻelua i kahi ʻōnaehana mālama wela o ka lāʻau hoʻonā paʻa + mālama ʻelemakule. ʻO ka paʻakikī o ke kaʻina hana wela he like.
2.Weldability: Loaʻa ka weldability maikaʻi o nā alloys wela kiʻekiʻe. I ka wā o ka hoʻopaʻa ʻana i ke sila sila, maʻalahi ka wela a hoʻoulu i ka deformation. Manaʻo ʻia e hoʻohana i nā mea i hoʻokumu ʻia i ka cobalt, nona ka conductivity thermal kiʻekiʻe, ka conductivity thermal ikaika, ka hoʻonui liʻiliʻi liʻiliʻi, a me ka liʻiliʻi deformation. , ʻoi aku ka maikaʻi o ka hui ʻana o ka welding.
3. Huli ka hana: Hiki ke hana ʻia ka hana hoʻohuli ʻoluʻolu.
Loaʻa i nā ʻāpana wela kiʻekiʻe ʻelua ke kaʻina hana maikaʻi.
Nā ʻokoʻa hana
1.Corrosion kū'ē:
Loaʻa i nā ʻāpana kobalt-based ke pale ʻana i ka ʻaʻahu maikaʻi loa, ka pale ʻana i ka corrosion a me nā ʻano wela kiʻekiʻe, a hiki ke mālama i ka hana paʻa i nā wahi koʻikoʻi e like me ka waikawa ikaika, alkali ikaika, ke kiʻekiʻe kiʻekiʻe a me ke kaomi kiʻekiʻe, a he kūpono no ka hana ʻana i nā ʻāpana e pono ai ke kū i nā haʻahaʻa kiʻekiʻe a me nā kaiapuni kiʻekiʻe;
Loaʻa i nā mea hoʻoheheʻe Nickel ka pale ʻana i ka corrosion maikaʻi a hiki ke mālama i ka paʻa a me ka pololei i nā ʻano media corrosive. Loaʻa iā lākou nā waiwai wela kiʻekiʻe a hiki ke mālama i ka ikaika kiʻekiʻe a me ka paʻakikī i nā wahi wela kiʻekiʻe. Akā ʻaʻole kūpono ia no ka media acidified corrosive nui.
2. Thermal paʻa: ʻOi aku ka maikaʻi o nā waiwai wela o ka Cobalt ma mua o ka nickel-based alloys a hiki ke hoʻohana ʻia i nā wela kiʻekiʻe ma luna o 1200°C no ka manawa lōʻihi, ʻoiai ʻo ka nickel-based alloys hiki ke hoʻohana wale ʻia ma kahi o 1000°C. ʻO nā mea hoʻoheheʻe Cobalt-based he kiʻekiʻe aʻe nā helu heheʻe a me ka conductivity thermal, liʻiliʻi ka hoʻonui ʻana i ka wela ma hope o ka hoʻomehana ʻana, a loaʻa nā pōmaikaʻi i ka paʻa wela; ʻOi aku ka maikaʻi o ke kūʻē ʻana o ka nickel-based alloys i ka oxidation a me ka corrosion, akā i nā wahi wela kiʻekiʻe, cobalt ʻO ka mea hoʻohui kumu i ʻoi aku ka maikaʻi o ka pale ʻana i ka wela a me ka pale ʻana i ka corrosion kiʻekiʻe.
3.Mechanical ikaika: Loaʻa i nā kobalt-based alloys ka ikaika kiʻekiʻe-mehana maikaʻi a me ka maikaʻi o ka hoʻoluhi wela wela, ʻoiai ʻo nā nickel-based alloys he maikaʻi loa ka ductility a me ka processability, akā ʻoi aku ka haʻahaʻa o ko lākou ikaika wela kiʻekiʻe a me ke kūpaʻa maloʻo maloʻo ma mua o nā alloys pili i ka cobalt. . Ma ka lumi wela, ua emi iki ka ikaika o nā'āpana cobalt-based, akāʻoi aku ka nui o ka elongation; ʻOi aku ka ikaika o nā alloys nickel-based, akā ʻoi aku ka palupalu, a pono e hoʻohana me ka akahele ma nā wahi me ka hopena. Ma nā wela kiʻekiʻe, ke 650 ° C ka mahana, ʻoi aku ka ikaika o nā nickel-based alloys, akā ʻoi aku ka palupalu, a hiki i ka haki ke hoʻohana ʻia i nā kūlana hopena. Ke piʻi ka mahana i 900 ° C, ʻaʻole hiki ke hoʻohana hou ʻia ka superalloy i hoʻokumu ʻia i ka nickel, ʻoiai ʻo ka superalloy i hoʻokumu ʻia i ke daimana kekahi mau ikaika.
4. Mechanical stiffness: ʻO ka mea i kapa ʻia ʻo stiffness ka hiki i kahi mea ke pale aku i ka deformation. ʻOi aku ka haʻahaʻa o ka ʻoʻoleʻa o ka nickel-based alloys ma mua o ka cobalt-based alloys ma nā pae wela a pau.
Usage
Hoʻohana pinepine ʻia nā ʻāpana Cobalt e hana i nā ʻāpana like ʻole a me nā ʻāpana ma lalo o ka ʻaʻahu-pale, corrosion-resistant, kiʻekiʻe-mehana a me ka hopena-kūpono hana; nickel-based alloys ua hoʻohana nui ʻia i ka mokulele, aerospace, ikehu, moana, mālama kaiapuni a me nā māla ʻē aʻe, ʻoi aku ka nui ʻO ka hana ʻana o nā mea nui e like me nā lau turbine a me nā keʻena puhi ahi i nā ʻenekini aero.
