Ngā mea katoa e hiahia ana koe ki te mōhio mō ngā Pūwāhi Rewa o ngā Konganuku?

Ko te ira rewa o te konganuku he āhuatanga ā-tinana taketake e whai wāhi nui ana ki te mahi whakarewa, te hanga, te rererangi, te hikohiko, me te tini ke atu o ngā ahumahi. Mā te mārama ki ngā ira rewa ka taea e ngā miihini, ngā kaipūtaiao rauemi, me ngā kaihanga te whiriwhiri i ngā konganuku tika mō ngā tono pāmahana teitei, te hanganga koranu, me ngā tikanga hanga. I roto i tēnei tuhinga, ka ruku hohonu mātou ki ngā mea katoa e hiahia ana koe ki te mōhio mō ngā ira rewa o ngā konganuku - he aha ngā pānga ki a rātou, me pēhea te ine, me pēhea te pānga ki te whakamahinga ahumahi o ngā konganuku rerekē.

He aha te Pūwāhi Rewa?

Tepūwāhi rewaKo te pāmahana tēnei e huri ai te āhua o te konganuku mai i te totoka ki te wai. Ka puta tēnei ina whiwhi ngā ngota o te konganuku i te kaha e tika ana hei wikitoria i ō rātou tūranga pumau i roto i te hanganga totoka, ā, ka neke noa hei wai.

• Ngā WāhangaI te nuinga o te wā ka inehia i roto i ngā nekehanga Celsius (°C) Fahrenheit rānei (°F).

• Te HirangaHe pai ngā konganuku rewa teitei mō ngā taiao wera nui, engari he māmā ake te whakarewa me te hanga i ngā konganuku rewa iti.

He aha te hiranga o te ira whakarewa i roto i te ahumahi?

Ka pā tika ngā pūwāhi rewa ki:

1. Kōwhiringa Rauemi– Hei tauira, me whakamahi ngā mata o te tāpine i ngā konganuku pēnei i te tungsten, te molybdenum rānei.

2. Ngā Tukanga Hanga– Ko te whakarewa, te hanga, te hanga-ā-ringa, me te maimoatanga wera e hiahia ana ki te mōhiotanga tika ki te whanonga rewa.

3. Ngā Paerewa Haumaru me te Hangarau– Mā te mōhio ki ngā rohe rewa ka āwhina i te karo i ngā pakaru hanganga.

Ngā Take e Pā Ana ki ngā Pūwāhi Rewa o ngā Konganuku

He maha ngā taurangi e pā ana ki te ira rewa:

• Hanganga AtomikaKo ngā konganuku he piri tonu ngā hanganga ngota, he nui ake ō rātou ira rewa.

• Kaha HereHe nui ake te wera e hiahiatia ana hei motu mō ngā hononga konganuku kaha ake.

• Ngā poke/whakakotahitangaMā te tāpiri i ētahi atu huānga (whakakotahi) ka taea te whakanui, te whakaiti rānei i te ira rewa o te konganuku.

• PēhangaI raro i te pēhanga nui, ka rerekē pea te ira rewa.

Ngā Pūwāhi Rewa o ngā Konganuku Noa (Ripanga Whakataurite)

Anei tētahi tohutoro tere mō ngā ira rewa o ngā konganuku e whakamahia whānuitia ana:

Ngā Konganuku Rewa Teitei me ā rātou Whakamahinga

1. Tungsten (W)

• Te Pūwāhi Rewa: 3422°C

• TonoNgā miro i roto i ngā pūrama rama, ngā pūwero rererangi, ngā irahiko.

• He aha aiKo te pūmahana rewa teitei rawa atu o ngā konganuku katoa, he mea tino pai mō te ātete wera nui.

2. Molibdenuma (Mo)

• Te Pūwāhi Rewa: 2623°C

• TonoNgā wāhanga o te oumu, te pūngao karihi, ngā pukupuku hōia.

3. Tantalum (Ta)

• Te Pūwāhi Rewa: 3017°C

• TonoNgā mea tāpiri hauora, ngā hikohiko, ngā wāhanga rererangi.

Ngā Konganuku Rewa Iti me ā rātou Whakamahinga

1. Konutea (Zn)

• Te Pūwāhi Rewa: 419.5°C

• TonoTe whakarewatanga mate, te whakapūmau i te maitai.

2. Tin (Sn)

• Te Pūwāhi Rewa: 231.9°C

• TonoHe mea honohono, he paninga mō ētahi atu konganuku.

3. Ārahi (Pb)

• Te Pūwāhi Rewa: 327.5°C

• TonoPūhiko, parenga irahiko.

Ngā Pūwāhi Rewa i roto i ngā Pūnaha Koranu

He maha ngā awhe rewa o ngā koranu, kaua ki ngā pito koi, nā te maha o ngā wāhanga. Hei tauira:

• Parahi(Parahi + Konutea): Te ira rewa ~900–940°C

• Parahi(Parahi + Tin): Te ira rewa ~950°C

• Kowiri tira (18-8)Te pūwāhi rewa ~1400–1450°C

Kua hangaia ēnei awhe kia tino āta hangaia mō ngā whakamahinga motuhake, pērā i te ātete ki te waikura, te kaha kume, me te ātete ki te wera.

Te Ine i ngā Pūwāhi Rewa

Ka whakatauhia ngā pūwāhi rewa e:

1. Tātaritanga Wera Rerekētanga (DTA)

2. Ngā Pūrua Whakamahana me ngā Oumu Pāmahana-Teitei

3. Te ōrite o te kōne pirometric (mō ngā uku me ngā waikura whakarewa)

I roto i te ahumahi, he mea tino nui ngā raraunga pūngao rewa tika mō te whakamana i ngā rauemi e ai ki ngā paerewa ASTM, ISO, DIN rānei.

Te Ira Rewa me te Ira Kohua

• Te Pūwāhi RewaTotoka ➝ Wai

• Te Pūtake KohuaWai ➝ Hau

Mō ngā konganuku, he nui ake te pāmahana koropupū i te pāmahana rewa. Hei tauira,Ka koropupū te tungsten i te 5930°C, he mea tino pai mō ngā oumu korehau me ngā tono mokowā.

Ngā tono e hiahia ana ki ngā konganuku pāmahana-teitei

Ko ētahi tauira e hiahiatia ana ngā konganuku rewa teitei:

• Ngā Mīhini RererangiNgā konukōrei tino-nikara.

• Waka āteaTe titanium me ngā konganuku ātete-waikura.

• Ngā Tauhohenga Karihi: Zirconium, molybdenum.

• Ngā Oumu Ahumahi: Tungsten, molybdenum, uku.

Ngā Whakaaro mō te Hangarua me te Maka

I te wā e hangarua ana, ka whakamahanahia ngā konganuku ki runga ake i ō rātou pūwāhi rewa hei pure me te hanga hou i a rātou. Pērā i ngā konganukukonumohehe tino pai mō te hangarua nā te mea he iti te ira rewa me te tukatuka anō he iti te penapena pūngao.

Ko ngā tukanga whakarewa (hei tauira, te whakarewa onepu, te whakarewa haumi) he mea tino whakawhirinaki ki te mōhio ki ngā raraunga pūwāhi rewa tika hei karo i ngā hapa.

Ngā Whakaaro Haumaru i te Wā e Tukatuka Ana i te Konganuku Pāmahana-Tiketike

• Whakamahiangā kākahu tiakimengā pare kanohi.

• Tāutaārai werai roto i ngā taputapu.

• Whakatinanangā pūoko pāmahanamengā whakaweto aunoa.

Ehara i te mea hangarau anake te mōhiotanga ki ngā pūwāhi rewa—engari he mea āwhina hoki ki ngā mahi hauora me te haumaru.

Whakamutunga

Ehara i te mea he mea nui te mārama ki ngā pūwāhi rewa o ngā konganuku mō ngā kaipūtaiao me ngā miihini anake, engari mō ngā kaihanga me ngā kaihoahoa o ia rā e whiriwhiri ana i ngā rauemi tika mō te mahi. Ahakoa kei te hanga koe i ngā wāhanga rererangi, i ngā taputapu tunu kai noa rānei, ko te pūwāhi rewa te mea e whakatau ana i te mahi, te haumaru, me te pakari.