Te aukumetanga o ngā rauemi mata
Ko te nuinga o ngā here he mea hanga ki ngā momo maitai kore waikura rerekē. I te nuinga o te wā, ka whakamahia e ngā kaihoko he aukume hei kimi i te kounga o te rauemi. Mena he aukume, kāore te rauemi i te pai. Inaa, ko te ritenga kē. Ko te aukume he tikanga he pakeke rawa te rauemi mata, he kaha rawa hoki. Nā te mea ko ngā here e hangaia ana i tēnei wā he mea hanga ki te maitai kore waikura austenitic pērā i te 201, 301, 304, me te 316, i muri i te maimoatanga wera, ka taea te kore-aukume i ngā rauemi mata, engari me tutuki i ngā rauemi mata e whakamahia ana hei hanga i ngā here te pakeke me te kaha kume o te hua tonu. Nō reira, ka taea anake te whakatutuki i te pakeke me te kaha kume mā te tukanga hurihuri makariri, e hiahia ana kia hurihia te rauemi ngohengohe ki roto i te rīpene hurihuri makariri angiangi. I muri i te hurihuri makariri, ka tino pakeke ake, ka puta hoki he papa aukume.
Te tūranga o ngā tīwiri whakahinuhinu
I tēnei wā, ko te paparanga konukōre i runga i te mata o ngā tīwiri whakakikoruatia ki te maitai waro he mahi whakahinuhinu. Ko te nuinga o ngā tīwiri maitai i roto i ngā rawhi DIN3017 he konukōre anō hoki, ka taea te mahi whakahinuhinu. Mena kāore koe e hiahia ki te whakakikoruatia ki te konutea, me hiahia koe ki te matū ware pi hei hinu whakahinuhinu. I ngā wā katoa, ka maroke te matū ware pi, ka ngaro te pāmahana i te wā e kawe ana, i te taiao uaua rānei, nō reira ka heke te whakahinuhinu, nō reira e taunakihia ana kia konukōre anō hoki te tīwiri maitai.
Rawhi pū-T me te puna
Ko te rawhi T-poro me te puna e whakamahia whānuitia ana i roto i ngā pūnaha hau whakamatao me te hau utu o ngā taraka taumaha. Ko te kaupapa o te puna he whakahaere i te whānui me te whakaheke o te hononga ngongo. Nō reira, i te wā e tāuta ana i tēnei rawhi, me aro koe ki te pito o te puna kāore e taea te tuku katoa ki raro. Mena e rua ngā raruraru i te mutunga: ko te tuatahi ko te ngaro o te mahi a te puna ki te whakahaere i te whānui me te whakaheke wera, ka noho hei āputa totoka; ahakoa ka paku whakawhāitihia pea tēnei, kāore rawa he huarahi hei whakarite ki te whānui me te whakaheke wera. Ko te tuarua ko te whakamahana o te pūnaha whakapiri, ka nui rawa te pēhanga whakapiri o te ngongo, ka pakaru ngā hononga paipa, ā, ka tino whakaiti i te roa o te mahi a te pūnaha whakapiri.
