Ngā Pūrongo

Te Rerenga Whakaoho Korehau
I whakawhanakehia te whakarewa korehau (whakarewatanga whakapūmau korehau – VIM) mō te tukatuka i ngā koranu motuhake me ngā koranu tauhou, ā, nō reira kei te piki haere te rongonui i te mea e whakamahia nuitia ana ēnei rauemi matatau. I whakawhanakehia te VIM hei whakarewa me te whakarewa i ngā koranu tino pai me ngā maitai kaha-teitei, he maha o ēnei e hiahiatia ana te tukatuka korehau nā te mea kei roto i a rātou ngā huānga ātete me ngā huānga tauhohe pērā i te Ti, Nb me te Al. Ka taea hoki te whakamahi mō ngā maitai korehau me ētahi atu konganuku ina hiahiatia he rewa tuatahi kounga teitei.

E ai ki te ingoa, ko te tukanga he whakarewa i te konganuku i raro i ngā āhuatanga korehau. Ka whakamahia te aukume hiko hei pūtake pūngao mō te whakarewa i te konganuku. Ka mahi te whakarewa aukume mā te whakaputa i ngā au hurihuri hiko ki roto i te konganuku. Ko te pūtake ko te koiri aukume, e kawe ana i te au hurihuri. Ka wera ngā au hurihuri, ā, ka rewa te utu.

Kei roto i te oumu he koti maitai ārai-hau, he mea whakamatao-wai, e āhei ana ki te tu atu i te korehau e hiahiatia ana mō te tukatuka. Ka rewahia te konganuku i roto i tētahi oko whakarewa kei roto i tētahi koiri whakapūmau wai, ā, he mea whakakī te oumu ki ngā pūwera e tika ana.

Ko ngā konganuku me ngā koranu he kaha te hiahia ki ngā hau – inā koa te hauota me te hāora – ka rewahia/whakamaeneenetia i roto i ngā oumu hiko korehau hei ārai i te poke/te tauhohenga ki ēnei hau. Nō reira, ko te tikanga o tēnei tukanga he tukatuka i ngā rauemi parakore teitei, i ngā rauemi rānei he iti te kaha ki te whakapūmau i te hanganga matū.

Q: He aha i whakamahia ai te whakarewatanga arataki korehau?

A: I whakawhanakehia tuatahitia te whakarewatanga hiko korehau mō te tukatuka i ngā koranu motuhake me ngā koranu tauhou, ā, nō reira kei te piki haere te rongonui i te mea kei te piki haere te whakamahinga o ēnei rauemi matatau. Ahakoa i whakawhanakehia mō ngā rauemi pēnei i ngā koranu tino pai, ka taea hoki te whakamahi mō ngā maitai kore waikura me ētahi atu konganuku.
Me pēhea te mahi a teoumu whakapūmau korehaumahi?
Ka utaina te rauemi ki roto i te oumu whakapūmau i raro i te korehau, ā, ka whakamahia te mana hei whakarewa i te utu. Ka tāpirihia ngā utu hei kawe i te rōrahi whakarewa wai ki te kaha whakarewa e hiahiatia ana. Ka whakapaia te whakarewa rewa i raro i te korehau, ā, ka whakatikatikaina te matū kia tutuki rā anō te matū rewa tika.
He aha te mea ka pā ki te konganuku i roto i te korehau?
Ina koa, ko te nuinga o ngā konganuku ka hanga i tētahi paparanga waikura ki runga i tētahi mata e pāngia ana e te hau. Ka mahi tēnei hei whakangungu rakau hei ārai i te hononga. I roto i te korehau o te wāhi, kāore he hau, nō reira kāore ngā konganuku e hanga i te paparanga tiaki.

Ngā Painga o te Whakarewatanga VIM
I runga i te hua me te tukanga whakarewa, ko ngā taumata korehau i te wā o te whakamahine kei roto i te awhe 10-1 ki te 10-4 mbar. Ko ētahi o ngā painga whakarewa o te tukatuka korehau ko:
Mā te rewa i raro i te hau kore-hāora ka whakawhāiti i te hanganga o ngā whakaurunga waikura kore-whakarewa, ā, ka ārai i te waikura o ngā huānga tauhohe.
Te whakatutukitanga o ngā ātete hanganga tino tata me ngā ihirangi hau
Te tango i ngā huānga iti kāore e hiahiatia ana me ngā pēhanga kohu teitei
Te tango i ngā hau rewa – te hāora, te hauwai, te hauota
Te whakatikatika i te hanganga koranu tika me te ōrite me te pāmahana rewa
Mā te rewa i roto i te korehau ka kore e hiahiatia he taupoki para tiaki, ā, ka whakaitihia te kaha o te poke o te para, te whakaurunga rānei ki roto i te ingot.
Nā konei, he iti noa ngā mahi whakarewa pēnei i te tango i te phosphorization me te desulfurization. Ko te mahi whakarewa VIM e aro nui ana ki ngā tauhohenga e pā ana ki te pēhanga, pēnei i ngā tauhohenga o te waro, te hāora, te hauota me te hauwai. He mea tino nui te tango i ngā huānga kino, ngā mea pupuhi, pēnei i te antimony, te tellurium, te selenium me te bismuth, i roto i ngā oumu hiko korehau.

Ko te aroturuki tika i te tauhohenga waro nui e pā ana ki te pēhanga hei whakaoti i te tango waikura he tauira noa iho o te whānui o te tukanga mā te whakamahi i te tukanga VIM mō te hanga superalloys. Ko ngā rauemi ehara i te superalloys ka tangohia te waro, ka tangohia te whanariki, ka tīpakohia rānei te whakakōhua ​​i roto i ngā oumu whakapūngao korehau kia tutuki ai ngā whakaritenga me te whakapūmau i ngā āhuatanga o te rauemi. Nā te nui o te pēhanga kohu o te nuinga o ngā huānga iti kāore e hiahiatia, ka taea te whakaiti i a rātou ki ngā taumata tino iti mā te whakakōhua ​​i te wā e rewa ana te whakapūngao korehau, inā koa mō ngā koranu he tino kaha te kaha i ngā pāmahana whakahaere teitei ake. Mō ngā momo koranu me tutuki i ngā whakaritenga kounga teitei, ko te oumu whakapūngao korehau te pūnaha rewa tino pai.

Ka taea te whakakotahi ngāwari i ngā tikanga e whai ake nei me te pūnaha VIM hei whakaputa i ngā rewa ma:
Te whakahaere i te āhuarangi me te iti o te turuturu me te mimiti
Te whiriwhiri i tētahi rauemi ātete pakari ake mō te arai o te para
Te whakaoho me te whakakotahitanga mā te whakaoho hikohiko, te hau horoi rānei
Te whakahaere tika i te pāmahana hei whakaiti i ngā tauhohenga o te oko whakarewa ki te rewa
Ngā tikanga tango para me te tātari e tika ana i te wā e whakarewaina ana
Te whakamahi i te tikanga horoi me te tikanga tundish e tika ana hei tango pai ake i te waikura.