Te Tukanga Whakarewa Thermit

• Te Whakarite:
Hipanga 1 Me whakarite kia ma, kia kore he waikura, kia tika hoki te tūnga o ngā pito o te rēri e whakarewahia ana. Ko te rahi o te āputa (te mokowā i waenganui i ngā rēri e rua e whakarewahia ana) me 26±2mm.

Hipanga 2 Whakatakotoria te pokepokea aihe ki ngā pito o te rēra, kia tika ai te uru. Ki te kore ngā pokepokea e uru ki te rēra, hurihia te rēra kia paku piri ai ngā rēra ki ngā pokepokea ai.

Hipanga 3 Tāpirihia te onepu pani ki ngā āputa i waenganui i ngā pokepokea ai mā te ringaringa. (3KG ranunga onepu pani 500ml wai).

Hipanga 4 Whakatakotoria te paepae para ki raro i te kōhao ringihanga kua whakaritea. Whakatakotoria he iti o te onepu kua whakaranua ki runga i te paepae para.

Me whakanoho te mono whakawhiti Stp.5 ki runga i te tomokanga i waenganui i ngā pokepokea ai.

Hipanga 6 Inehia, ka ringihia te nui e hiahiatia ana o te wāhanga Thermit ki roto i te para.

*Kia mahara ki te tirotiro i te rā i tāia ki runga i te takai. Kaua e whakamahia mēnā kua pau te paura*

• Te whakamahana i mua:
Whakamahanahia ngā pito o te rēra hei tango i te makuku me te whakanui ake i te pāmahana whakarewa.
Ko te pēhanga mahi hāora he 0.25~0.30MPa, ā, ko te pēhanga mahi propane he 0.08~0.10MPa. Whakatikatikahia te mura o te roa ki te 15~25mm, ā, kia tino karaka te tae o te mura whakamahana.
Ka rerekē te wā whakamahana i waenga i te 6~8 meneti, e ai ki te pāmahana e karapoti ana. Kia oti te whakamahana, tangohia te mura, whakawetohia te takirere o te Hāora me te Propane. Me eke te pāmahana o te rēri ki te 800~900℃.

• Te mura:
Tāpirihia te pūwhakakā, whakauruhia te pūtake whakakā ki waenganui o te wāhanga Thermit i roto i te oko tahu.
Whakakāhia te pūtake mura, kia mōhio kei tawhiti koe i te para.

• Te Tauhohenga me te Whakarewa:
Ka pāngia te wāhanga Thermit kua mura e te tauhohenga wera nui, ka puta he wera nui, ka hangaia he rino rewa hei whakakī ki roto i te pokepokea ai, kia pai ai te honohono o ngā pito reri e rua.

Te Whakamatao me te Whakaoti:
Tukua te maitai rewa kia whakamatao, kia totoka hoki i roto i te pokepokea ai. Tangohia, kutikutihia hoki te pokepokea ai Thermit ina totoka te hononga. Tirohia te hononga kua whakarewahia mō ngā hapa, ngā hapa rānei.
*Tērā pea ka pā te tango wawe ki te kounga o te hononga whakarewa. He rerekē, mā te tango wawe i te whakarewa ka uaua ake te tukanga kutikuti*

• Te kutikuti i te konganuku tāpiri i runga i te mata

• Te huri:
Te huri i te konganuku nui mā te mīhini huri (Mīhini huri hiko/penehīni)

• Te Rekoata me te Horoi