Ngā tawhā hangarau me ngā whakaritenga o ngā pereti karāhe.

 

He mea rongonui ngā pereti karāhe i roto i te hanganga me te hoahoa whare nā te mea he pakari, he ātaahua, he maha hoki ngā whakamahinga. He mea nui te mārama ki ngā tawhā hangarau me ngā whakaritenga o ngā pereti karāhe mā ngā kaihoahoa, ngā kaihanga whare, me ngā kaipupuri whare kia taea ai e rātou te whakatau whai whakaaro.

1. Te Hanganga me te Hanganga:
He toka mura te karāneti, he mea hanga tuatahi mai i te quartz, te feldspar, me te mika. Ka pā te hanganga o te kohuke ki te tae, te kakano, me te āhua whānui o te pereti. Ko te matotoru toharite o ngā pereti karāneti kei waenga i te 2.63 ki te 2.75 g/cm³, ā, he pakari, he pai hoki mō ngā momo mahi.

2. Matotoru me te Rahi:
Ko te matotoru o ngā pereti karāneti he 2 henimita (3/4 inihi) me te 3 henimita (1 1/4 inihi). He rerekē ngā rahi paerewa, engari ko ngā rahi noa ko te 120 x 240 henimita (4 x 8 putu) me te 150 x 300 henimita (5 x 10 putu). Kei te wātea hoki ngā rahi ritenga, e āhei ai te hoahoa ngāwari.

3. Whakaotinga Mata:
Ka pā nui te āhua me te mahi o ngā pereti karāneti ki te āhua o te papa. Ko ngā whakaotinga noa ko te oro, te whakakoi, te mura, me te paraihe. Ka puta he āhua kanapa i te whakaotinga oro, ko te mata matte ia ka puta he āhua pīataata. He pai ngā whakaotinga mura mō ngā mahi o waho nā te mea he ātete ki te paheke.

4. Te mimiti wai me te pūngao:
He iti te mimiti wai o ngā pereti karāneti, tata ki te 0.1% ki te 0.5%. Nā tēnei āhuatanga ka ātete rātou ki te paru, ā, he pai hoki mō ngā papa kaute kīhini me ngā papa horoi kaukau. Ka rerekē te kaha o te karāneti, ka pā ki ngā whakaritenga tiaki.

5. Kaha me te Pūmau:
E mōhiotia ana te karāhe mō tōna kaha whakaharahara, me te kaha pēhanga mai i te 100 ki te 300 MPa. Nā te pakari o tēnei mea, he mea tino pai mō ngā wāhi e nui ana te haereere me ngā mahi o waho, kia roa ai te wā e whakamahia ana, kia ātete ai hoki ki te pakaru.

Hei whakamutunga, he mea nui te mārama ki ngā tawhā hangarau me ngā whakaritenga o ngā pereti karāhe hei whiriwhiri i te rauemi tika mō tētahi kaupapa. Nā ō rātou āhuatanga ahurei, he mea pai tonu ngā pereti karāhe ki ngā wāhi noho me ngā wāhi arumoni.