Ngā Āhuatanga Ā-ringa o te Ngongo Tapawhā – Raraunga Hua, Kume, Mārō
Ngā raraunga ā-pūkaha whānui mō ngā ngongo tapawhā maitai: te kaha whakaputa, te kaha kume, te roa me te pakeketanga mā te rauemi (Q235, Q355, ASTM A500). He mea nui mō te hoahoa hanganga.
Ko te kaha e pā ana ki te kaha o ngā rauemi ngongo tapawhā kua whakarewaina ki te ātete i ngā kino (te āhua rerekē o te kirihou, te whati rānei) i raro i te kawenga pumau. Nā te mea ko ngā momo mahi kawenga ko te totoro, te whakau, te takai, te kutikuti, me ētahi atu.
Nā te mea ka wehea hoki te kaha ki te kaha kume, te kaha pēhi, te kaha piko, te kaha kutikuti, me ētahi atu. He maha ngā wā ka kitea he hononga tūturu i waenga i ngā kaha rerekē, ā, i te whakamahinga noa, ko te kaha kume te mea tino taketake mō te ine i te kaha.
1. Te tātari i te taupū mahi o ngā ngongo tapawhā kua whakarewahia - ko ngā tikanga e whakamahia whānuitia ana ko te ngongo tapawhā kua whakarewahia Q195 koki Brinell (HB), koki Rockwell (HRA, HRB, HRC), me te koki Vickers (HV). Ko te koki he ine e whakataurite ana i te ngawari me te pakeke o ngā rauemi whakarewa.
Ko te tikanga pēhi koki te tikanga tino onge mō te whakatau i te koki i tēnei tau, e whakamahi ana i tētahi nui me te āhua o te pane pēhanga hei pēhi ki te mata o te rauemi whakarewa kua whakamatautauria i raro i tētahi kawenga, ā, ka whakatau i tōna uara koki i runga i te taumata pēhi.
2. Ko te tātaritanga tohu mahi o ngā ngongo tapawhā kua whakarewaina - ko te kaha, te kirihou, me te koki e kōrerohia ana i muri mai, he tohu mahi mīhini katoa o te konganuku i raro i te kawenga pumau. I roto i te mahi, he maha ngā mīhini miihini e mahi ana i raro i ngā kawenga auau, ka taea te whakararu i roto i aua taiao.
3. Te tātaritanga taupū mahi o te ngongo tapawhā kua whakarewaina - he nui te pānga o te kawenga ki ngā wāhanga miihini ki te kaha, e kiia nei ko te kawenga pānga. Ko te ngongo tapawhā kua whakarewaina Q195 kei te ātete i te mana whakangaro i raro i te kawenga pānga, e kiia nei ko te pakari pānga.
4. Tātaritanga taupū mahi o te ngongo tapawhā kua whakarewaina - Ko te kirihou koki e pā ana ki te kaha o ngā raraunga ngongo tapawhā kua whakarewaina Q195 ki te pāngia e te whakarerekētanga kirihou (whakarerekētanga pumau) i raro i te kawenga me te kore e pakaru.
5. Tātaritanga taupū mahi o ngā ngongo tapawhā kua whakarewaina - mahi ā-pūkaha o ngā ngongo tapawhā kirihou.
Wā tuku: Hepetema-22-2025
