ngā purongo

Whakaarohia tētahi rauemi e māmā ake ai, e kaha ake ai, e ārai atu ai hoki i ō hua. Koinei te kupu whakaari oNgā Aorangi(Ngā Maikoro-ā-rangi), he tāpiringa mahi-teitei kua rite ki te huri i te pūtaiao rauemi puta noa i te whānuitanga o ngā ahumahi. Ko ēnei porowhita tuwhera whakamiharo, i kohia mai i te pungarehu rere, kua hangaia hei tuku i ngā painga tino pai ki te wāhi e tino hira ana te mahi.

Kei te pūtake o ā rātou mahi he hanganga ahurei: he anga porowhita hiri, he tata korehau te roto. Ko tēnei hoahoa auaha te pūtake o ā rātou painga e toru: he tino māmā (me te mātotoru tūturu o te 0.5-1.0 g/cm³), he kaha whakamiharo (te kaha pēhanga pumau o te 70-140 Mpa), me te whakamarumaru wera pai rawa atu (te kawe wera o te 0.054-0.095 W/m·K). Nā tō rātou kaha ki te tu atu i ngā pāmahana tae atu ki te 1750°C, he mea nui rātou i roto i ngā taiao pāmahana teitei.

Haunga ēnei āhuatanga matua, he maha atu anō ngā āhuatanga kua whakarei ake o ngā cenospheres:

• Mahi Arotau: Ka mahi rātou hei whakakaha iti, e whakanui ana i te pakeke me te ātete ki te kakahu i roto i ngā rauemi whakahiato, me te whakaiti i te taumaha katoa me te whakamahinga o ngā rauemi.

• Pūmautanga Tino Pai: Nā te iti o te makuku me te ātete matū teitei, ka whakarite kia pumau te mahi me te roa o te ora o ngā hua whakamutunga.

• Te Whakarei Ake i te Māmā o te Mahi: Mā te āhua porowhita, pai hoki ka pai ake te rere me te marara o ngā pūnaha wai me te paura, mai i ngā peita me ngā paninga ki te sima me ngā kirihou, ka maeneene ake te mutunga me te ngāwari ake o te tono.

• Ngā Hanganga Maha: E wātea ana i roto i te whānuitanga o ngā rahi matūriki (mai i te 10 ki te 425 maikorona), ka taea te whakarite mō ngā tono motuhake, mai i te whakakī i ngā pūwero moroiti i roto i ngā paninga ki te whakarato i te matotoru i roto i te raima mama.

Kāore he mutunga o te pūmanawa tono. I roto i te umanga hanga, ka hangaia e rātou he mea whakarewa māmā, ātete ahi, meraima whakamātaoMō ngā peita me ngā paninga, ka whakarei ake i te mārama, te pakari, me te whakaata wera. I roto i te rāngai kirihou me ngā mea hiato, ka whakaitihia te taumaha me te whakahekenga me te whakapai ake i te hanganga. Hei tāpiri, he mea nui ēnei i roto i ngā mara motuhake pēnei i te sima hinu (hei tāpiringa māmā) me te rererangi (mō ngā mea hiato māmā, ārai wera).

Mā te whakauru i ngā cenospheres, ka taea e ngā kaihanga te whakatutuki i tētahi painga nui: te whakawhanake i ngā hua o te whakatupuranga e whai ake nei, ehara i te mea he kaha te mahi me te roa anake, engari he pumau ake, he iti hoki te utu. Wewetehia tētahi taha hou o te mahi rauemi.

Whakapā mai ki a mātou ki te tiki tauira, utu me ētahi atu taipitopito mō ngā mōhiohio hua.