1. Nā Mea Hoʻohui like ʻole

Nikala chromium metalaʻO ka uea he nickel (Ni) a me chromium (Cr) ka mea nui, a hiki ke loaʻa nā mea liʻiliʻi. ʻO ka nui o ka nickel i loko o ka nickel-chromium alloy ma kahi o 60%-85%, a ʻo ka nui o ka chromium ma kahi o 10%-25%. No ka laʻana, ʻo ka nickel-chromium alloy maʻamau Cr20Ni80 he 20% ka nui o ka chromium a he 80% ka nui o ka nickel.

ʻO ka ʻāpana nui o ka uea keleawe he keleawe (Cu), nona ka maʻemaʻe e hiki ke piʻi i mua o 99.9%, e like me ke keleawe maʻemaʻe T1, ʻo ka nui o ke keleawe e like me 99.95%.

2. Nā Waiwai Kino like ʻole

Waihoʻoluʻu

- ʻO ka uea Nichrome he hina kālā maʻamau. ʻO kēia no ka mea ua hui pū ʻia ka ʻōlinolino metala o ka nickel a me ka chromium e hāʻawi i kēia kala.

- He ʻulaʻula poni ke kala o ke uea keleawe, ʻo ia ke kala maʻamau o ke keleawe a he ʻōlinolino metala kona.

Ka nui o ka paʻa

- He nui ka nui o ka nickel-chromium alloy, ma kahi o 8.4g/cm³. No ka laʻana, he 8400 kg ke kaumaha o 1 mika cubic o ka uea nichrome.

- ʻO kauea keleaweʻO ka nui o ka mānoanoa ma kahi o 8.96g/cm³, a ʻoi aku ke kaumaha o ka nui like o ka uea keleawe ma mua o ka uea nickel-chromium alloy.

Kiko Heheʻe

-He kiʻekiʻe ke kiko heheʻe o ka nickel-chromium alloy, ma kahi o 1400 ° C, a hiki iā ia ke hana i nā mahana kiʻekiʻe me ka ʻole o ka heheʻe maʻalahi.

ʻO ke kiko heheʻe o ke keleawe ma kahi o 1083.4 ℃, ʻoi aku ka haʻahaʻa ma mua o ka nickel-chromium alloy.

Ka Hoʻokele Uila

-Hoʻokele maikaʻi loa ka uea keleawe i ka uila, ma ke kūlana maʻamau, he conductivity uila ko ke keleawe ma kahi o 5.96 × 10 kuhi S / m. ʻO kēia no ka mea ʻo ke ʻano uila o nā ʻātoma keleawe e ʻae iā ia e alakaʻi maikaʻi i ke au, a he mea conductive maʻamau ia, i hoʻohana nui ʻia ma nā kahua e like me ka hoʻoili mana.

ʻOi aku ka haʻahaʻa o ka conductivity uila o ka uea nickel-chromium alloy, a ʻoi aku ka haʻahaʻa o kona conductivity uila ma mua o ke keleawe, ma kahi o 1.1 × 10⁶S / m. ʻO kēia ma muli o ke ʻano atomika a me ka launa pū ʻana o ka nickel a me ka chromium i loko o ka alloy, no laila ua ālai ʻia ka hoʻokele ʻana o nā electrons i kekahi ʻano.

Ka hoʻokele wela

-He maikaʻi loa ka hoʻoili wela o ke keleawe, me ka hoʻoili wela ma kahi o 401W/(m·K), ʻo ia ka mea e hoʻohana nui ʻia ai ke keleawe ma nā wahi e pono ai ka hoʻoili wela maikaʻi, e like me nā mea hoʻoheheʻe wela.

He nāwaliwali iki ka conductivity thermal o ka nickel-chromium alloy, a ʻo ka conductivity thermal ma waena o 11.3 a me 17.4W/(m·K)

3. Nā ʻAno Kemika like ʻole

Ke kū'ē ʻana i ka palaho

He kūpaʻa maikaʻi ko nā hui nickel-chromium i ka pala, ʻoiai hoʻi i nā wahi hoʻomehana wela kiʻekiʻe. Hoʻokumu ʻo Nickel a me chromium i kahi ʻili oxide mānoanoa ma luna o ka ʻili o ka hui, e pale ana i nā hopena oxidation hou aʻe. No ka laʻana, i ka ea wela kiʻekiʻe, hiki i kēia papa o ka ʻili oxide ke pale i ka metala i loko o ka hui mai ka pala hou aʻe.

- Hoʻoheheʻe maʻalahi ʻia ke keleawe i ka lewa e hana i kahi vercas (kelepa carbonate kumu, formula Cu₂(OH)₂CO₃). ʻOi loa aku i kahi kaiapuni pulu, e pala mālie ka ʻili o ke keleawe, akā ʻoi aku ka maikaʻi o kona kūpaʻa ʻana i ka pala i kekahi mau waikawa non-oxidizing.

Paʻa Kemika

- Loaʻa i ka nichrome alloy ke kūpaʻa kemika kiʻekiʻe a hiki ke noho paʻa i ke alo o nā kemika he nui. Loaʻa iā ia kahi hoʻomanawanui i nā waikawa, nā kumu a me nā kemika ʻē aʻe, akā hiki iā ia ke pane i nā waikawa oxidizing ikaika.

- Ke keleawe i loko o kekahi mau mea hoʻomake ikaika (e like me ka waikawa nitric) ma lalo o ka hana o kahi hopena kemika ʻoi aku ka ikaika, ʻo ke kaulike hopena ʻo \(3Cu + 8HNO₃(dilute)=3Cu(NO₃ +2NO↑ + 4H₂O\).

4. Nā Hoʻohana like ʻole

- uea nickel-chromium

- Ma muli o kona kū'ē kiʻekiʻe a me ke kūpaʻa wela kiʻekiʻe, hoʻohana nui ʻia ia e hana i nā mea hoʻomehana uila, e like me nā uea hoʻomehana i loko o nā umu uila a me nā mea hoʻomehana wai uila. I loko o kēia mau mea hana, hiki i nā uea nichrome ke hoʻololi pono i ka ikehu uila i wela.

- Hoʻohana ʻia nō hoʻi ia i kekahi mau manawa kahi e pono ai ke mālama ʻia nā waiwai mechanical i nā wahi wela kiʻekiʻe, e like me nā ʻāpana kākoʻo o nā umu wela kiʻekiʻe.

- Uea keleawe

- Hoʻohana nui ʻia ka uea keleawe no ka hoʻoili mana, no ka mea, hiki i kona alakaʻi uila maikaʻi ke hōʻemi i ka nalowale o ka ikehu uila i ka wā o ka hoʻoili ʻana. I loko o ka ʻōnaehana pūnaewele mana, hoʻohana ʻia ka nui o nā uea keleawe e hana i nā uea a me nā kaula.

- Hoʻohana ʻia hoʻi ia e hana i nā pilina no nā ʻāpana uila. I nā huahana uila e like me nā kamepiula a me nā kelepona paʻalima, hiki i nā uea keleawe ke hoʻokō i ka hoʻoili hōʻailona a me ka lako mana ma waena o nā ʻāpana uila like ʻole.