He aha te whakakāwhata?
Ko te whakakāwhata he tukanga ahumahi e hurihia ai te waro ki te kāwhata. Koinei te huringa hanganga moroiti e puta ana i roto i ngā maitai waro, i ngā maitai iti-koranu rānei e whakaatuhia ana ki ngā pāmahana o te 425 ki te 550 nekehanga Celsius mō ngā wā roa, hei tauira, 1,000 hāora. He momo pakarukaru tēnei. Hei tauira, he maha ngā wā kei roto i te hanganga moroiti o ngā maitai waro-molybdenum he pearlite (he ranunga o te ferrite me te cementite). Ina whakakāwhatatia te rauemi, ka meinga te pearlite kia pirau hei ferrite me te kāwhata marara matapōkere. Ka hua ake tēnei i te pakarukaru o te maitai me te iti o te hekenga o te kaha ina tohatoha matapōkeretia ēnei matūriki kāwhata puta noa i te matrix. Heoi, ka taea e tātou te aukati i te whakakāwhata mā te whakamahi i ngā rauemi he nui ake te ātete e kore e tino pāngia e te whakakāwhata. Hei tāpiri, ka taea e tātou te whakarerekē i te taiao mā te, hei tauira, te whakanui ake i te pH, te whakaiti rānei i te ihirangi pūhaumāota. Ko tētahi atu huarahi hei aukati i te whakakāwhata ko te whakamahi i te paninga. Te tiakitanga katotika o te rino maka.
He aha te whakawaro?
Ko te whakapūnga waro he tukanga ahumahi e hurihia ai ngā mea rauropi ki te waro. Ko ngā mea rauropi e whakaarohia ana e tātou i konei ko ngā tinana tipu me ngā tinana kararehe. Ka puta tēnei tukanga mā te whakahorohoro kino. He tauhohenga pyrolytic tēnei, ā, e kiia ana he tukanga uaua e kitea ai ngā tauhohenga matū maha i te wā kotahi. Hei tauira, ko te tango hauwai, te whakatōtō, te whakawhiti hauwai me te isomerization. He rerekē te tukanga whakapūnga waro i te tukanga whakapūnga waro nā te mea he tere ake te tukanga whakapūnga waro nā te mea he tere ake te tauhohenga. I te nuinga o te wā, ka taea e te nui o te wera e whakamahia ana te whakahaere i te nui o te whakapūnga waro me te nui o ngā huānga ke e toe ana. Hei tauira, ko te nui o te waro o te toenga he tata ki te 90% te taumaha i te 1200K me te tata ki te 99% te taumaha i te 1600K. I te nuinga o te wā, ko te whakapūnga waro he tauhohenga exothermic, ka taea te waiho ki a ia anō, te whakamahi rānei hei pūtake pūngao me te kore e hanga i tetahi tohu o te hau waro hauhā. Heoi, ki te pāngia te rauemi koiora e ngā huringa ohorere o te wera (pērā i te pahūtanga karihi), ka tere te whakapūnga waro o te rauemi koiora ka huri hei waro totoka.
He rite te whakakāwhatu ki te whakawaro
He tukanga ahumahi nui ēnei e rua e whakamahi ana i te waro hei tauhohenga, hei hua rānei.
He aha te rerekētanga i waenga i te whakakāwhata me te whakakāwaro?
He tukanga ahumahi e rua te whakakāpōro me te whakakāpōro. Ko te rerekētanga matua i waenga i te whakakāpōro me te whakakāpōro ko te whakakāpōro he huri i te matū waro ki te waro, ko te whakakāpōro ia he huri i te waro ki te kāpōro. Nō reira, he huringa matū te whakakāpōro, ko te whakakāpōro ia he huringa hanganga moroiti.
Wā tuku: Hepetema-29-2021