I roto i te mara o te hanga paipa, me whai i ngā paerewa me ngā whakaritenga maha hei whakarite i te kounga me te haumaru o te hua whakamutunga.ASTM A139he paerewa e whai wāhi nui ana ki te hanga paipa maitai mō ngā momo tono.
Ko te ASTM A139 te paerewa mō ngā paipa maitai whakarewa hiko (arc) (NPS 4 me runga ake). E kapi ana i ngā whakaritenga mō ngā paipa maitai whakarewa hiko (arc) porowhita, pakitara angiangi, austenitic mō ngā tono waikura, pāmahana teitei rānei. E whakamārama ana tēnei paerewa i ngā whakaritenga mō ngā rauemi, ngā tukanga hanga, ngā ine me ngā āhuatanga miihini o ngā paipa maitai.
Ko ngā whakaritenga rauemi o te ASTM A139 e whakamārama ana i ngā momo me ngā taumata o te maitai ka taea te whakamahi hei hanga paipa. Kei roto i tēnei ko te hanganga matū o te maitai, me whai ōrau motuhake o ngā huānga pēnei i te waro, te konupūmā, te whākōkī, te whanariki me te silicon. He mea nui ēnei whakaritenga hei whakarite kia pai te maitai e whakamahia ana i roto ingā paipae tutuki ana i ngā paerewa kaha me te ātete ki te waikura e hiahiatia ana.
Ko te tukanga hanga mō ngā paipa ASTM A139 he whakarewa hiko (arc) e whakamahi ana i te arc hiko hei whakaputa i te wera e hiahiatia ana hei whakarewa i ngā rīpene maitai kia rite ki te āhua porotaka. Ka āta whakahaeretia tēnei tukanga kia tino kounga teitei ngā whakarewa, ā, kia kore he hapa. Ka tohua hoki e te paerewa ngā tikanga tirotiro mō ngā whakarewa, pērā i te whakamātautau ultrasonic me te whakamātautau piko arataki-whakawhiti, kia tino tutuki ai ngā paerewa kounga e hiahiatia ana.
Mō ngā ine, e whakamārama ana te ASTM A139 i ngā whakaritenga mō te rahi o ngā paipa, te matotoru o te pakitara, me te roa. Kei roto i tēnei ko ngā manawanui motuhake mō ngā ine hei whakarite kia tutuki i te paipa ngā whakaritenga e tika ana mō tōna whakamahinga. He mea nui ēnei whakaritenga ine hei whakarite kia tika te tāutanga me te hono i ngā paipa i roto i ngā momo tono.
Kei roto hoki i te ASTM A139 ngā āhuatanga ā-pūkaha pēnei i te kaha kume, te kaha tuku, me te roa. He mea nui ēnei āhuatanga hei whakatau i te kaha me te mahi a te paipa i raro i ngā āhuatanga whakahaere rerekē. E whakatakoto ana te paerewa i ngā whakaritenga iti rawa mō ēnei āhuatanga ā-pūkaha kia taea ai e te paipa te tu atu ki te pēhanga, te pāmahana me ngā āhuatanga taiao e tumanakohia ana.
I te nuinga, he mea nui te ASTM A139 i roto i te hanga ongā paipa maitaimō ngā momo mahi. Mā te tautuhi i ngā rauemi, ngā tukanga hanga, ngā rahi me ngā āhuatanga miihini o ngā paipa, ka whakarite te paerewa kia tutuki i te hua whakamutunga ngā paerewa kounga me te haumaru e tika ana. Ka whakawhiwhia ki ngā kaihanga, ngā miihini me ngā kaiwhakamahi mutunga te whakapono ka mahi te paipa kia rite ki te mea e tumanakohia ana i roto i tana mahi i whakaarohia.
Hei whakarāpopototanga, he mea nui te mārama ki te hiranga o te ASTM A139 i roto i te hanga paipa hei whakarite i te kounga me te haumaru o ngā hua paipa rino. E whakatakoto ana te paerewa i ngā whakaritenga e tika ana mō ngā rauemi, ngā tukanga hanga, ngā ine me ngā āhuatanga miihini hei whakarite kia tutuki i ngā paipa ngā paerewa kounga me te mahi e tika ana. Mā te piri ki te ASTM A139, ka taea e ngā kaihanga te whakaputa paipa rino kounga teitei e tutuki ai ngā hiahia o ngā momo ahumahi me ngā tono.
Wā tuku: Hakihea-28-2023