I tīmata te hanga paipa rino i te tīmatanga o te rautau 1800. I te tīmatanga, i hangaia ngā paipa mā te ringaringa – mā te whakamahana, te piko, te patupatu, me te patupatu i ngā taha. I whakaurua te tukanga hanga paipa aunoa tuatahi i te tau 1812 ki Ingarangi. Kua piki haere tonu ngā tukanga hanga mai i taua wā. Kei raro nei ētahi tikanga hanga paipa rongonui e whakamāramahia ana.
Te Whakarewa i te Pona
I te tīmatanga o te tekau tau atu i 1920, i whakamahia te whakarewanga i te hononga o te paipa. Ahakoa kāore e whakamahia ana tēnei tikanga, kei te whakamahia tonutia ētahi paipa i hangaia mā te tukanga whakarewanga i te hononga o te paipa i ēnei rā.
I roto i te tukanga whakarewa i te kopa, ka whakamahanahia te maitai i roto i te oumu, kātahi ka hurihia kia rite ki te āhua o te rango. Kātahi ka "whakakīia" ngā taha o te pereti maitai. Ko te whakakī ko te whakakikorua i te taha o roto o te pereti maitai, me te taha whakapiko o te taha kē o te pereti. Kātahi ka whakakīia te hononga mā te whakamahi i te pōro whakarewa, ā, ka tukuna te paipa wera ki waenganui i ngā roera hei whakakotahi i te hononga kia hanga he hononga.
Kāore ngā whakarewa i hangaia mā te whakarewa i te taha o te hononga i te pono pērā i ērā i hangaia mā te whakamahi i ngā tikanga hou ake. Kua whakawhanakehia e te American Society of Mechanical Engineers (ASME) tētahi whārite hei tatau i te pēhanga mahi e whakaaetia ana o te paipa, i runga i te momo tukanga hanga. Kei roto i tēnei whārite tētahi taurangi e mōhiotia ana ko te "tauwehe hononga", e ahu mai ana i te momo whakarewa i whakamahia hei hanga i te hononga o te paipa. Ko te tauwehe hononga o ngā paipa tuitui he 1.0. Ko te tauwehe hononga o ngā paipa whakarewa i te taha o te hononga he 0.6.
Paipa Hiko Ātete Whakarewa
Ka hangaia te paipa whakarewa ātete hiko (ERW) mā te hanga matao i tētahi rau maitai kia rite ki te porotaka. Kātahi ka tukuna te iahiko i waenganui i ngā taha e rua o te maitai hei whakamahana i te maitai kia tae ki tētahi wāhi ka honoa ngā taha kia hanga he hononga, me te kore e whakamahia he rauemi whakakī whakarewa. I te tīmatanga, i whakamahia e tēnei tukanga hanga he iahiko AC auau iti hei whakamahana i ngā taha. I whakamahia tēnei tukanga auau iti mai i te tekau tau atu i 1920 ki te tau 1970. I te tau 1970, i whakakapia te tukanga auau iti e tētahi tukanga ERW auau teitei i hua ake ai he whakarewa kounga teitei ake.
I roto i ngā wā, i kitea he ngāwari ngā whakarewa o ngā paipa ERW auau iti ki te waikura tuitui whiriwhiri, ki ngā kapiti matau, me te kore e tika te here o ngā tuitui, nō reira kāore e whakamahia te ERW auau iti hei hanga paipa. Kei te whakamahia tonutia te tukanga auau teitei hei hanga paipa hei whakamahi i roto i te hanganga paipa hou.
Paipa Hiko Whakarewahia
I hangaia ngā paipa hiko whakarewa uira i te tīmatanga o te tau 1927. I oti te whakarewa uira mā te hanga i tētahi rau maitai kia āhua porotaka. I whakamahanahia ngā taha kia āhua rewa, kātahi ka whakakotahihia kia puta te maitai rewa i te hononga, ā, ka hanga he porowhita. Pērā i ngā paipa ERW auau iti, ka ngawari ngā hononga o ngā paipa whakarewa uira ki te waikura me te pakaru matau, engari he iti ake i ngā paipa ERW. Ka ngawari hoki tēnei momo paipa ki te pakaru nā ngā wāhi mārō o te maitai pereti. Nā te mea ko te nuinga o ngā paipa whakarewa uira i hangaia e te kaihanga kotahi, e whakaponohia ana i puta mai ēnei wāhi mārō nā te tineitanga tūpono o te maitai i te wā o te tukanga hanga i whakamahia e taua kaihanga. Kāore e whakamahia ana te whakarewa uira ki te hanga paipa i ēnei rā.
Paipa Whakarewa Āwhata Ruku Takirua (DSAW)
Pērā i ngā tukanga hanga paipa kē atu, ko te hanga i te Paipa Whakarewa Āwhata Rua Rua ko te hanga tuatahi i ngā pereti maitai kia rite ki ngā āhua porotaka. Ka hangaia ngā taha o te pereti hurihuri kia puta ai ngā awaawa āhua-V ki ngā mata o roto, o waho hoki i te wāhi e honoa ana. Kātahi ka whakarewahia te hononga paipa mā te whakamahi i te mīhini whakarewa āwhata kotahi ki ngā mata o roto, o waho hoki (nō reira ka rua te taupoki). Ka rumakina te āwhata whakarewa i raro i te rere.
Ko te painga o tēnei tukanga, ka uru ngā whakarewa ki te 100% o te pakitara o te paipa, ā, ka puta he hononga tino kaha o te rauemi paipa.
Paipa Tuitui
Kua hangaia ngā paipa tui kore mai i te tau 1800. Ahakoa te whanaketanga o te tukanga, kei te mau tonu ētahi o ngā wāhanga. Ka hangaia ngā paipa tui kore mā te wero i tētahi maitai porowhita wera ki tētahi mandrel. Kātahi ka hurihia te maitai kua pokaia, ka totorohia kia tutuki ai te roa me te whānui e hiahiatia ana. Ko te painga matua o ngā paipa tui kore ko te whakakore i ngā hapa e pā ana ki te tui; heoi, he nui ake te utu hanga.
I ngā paipa tuimotu o mua, i ngāwari te pāngia e ngā hapa i puta mai i ngā poke o te maitai. I te whakapainga ake o ngā tikanga hanga maitai, i whakaitihia ēnei hapa, engari kāore anō kia tino whakakorea. Ahakoa te āhua nei he pai ake te paipa tuimotu i te paipa i hangaia, i whakapirihia ki te hononga, he iti noa te kaha ki te whakapai ake i ngā āhuatanga e hiahiatia ana i roto i te paipa. Nā konei, kei te wātea ngā paipa tuimotu i ngā taumata me ngā matotoru pakitara iti iho i te paipa i whakapirihia.
He tohunga a Jindalai Steel Group ki te whakaputa i ngā paipa hangarau teitei ERW (Electric Resistance Welded) me SSAW (Spiral Submerged Arc welded). Kei tā mātou kamupene he mīhini whakarewa ātete hononga tika auau-teitei φ610 mm, me te mīhini whakarewa pewa raro porowhita φ3048mm. Haunga ngā wheketere ERW me SSAW, e toru atu ā mātou wheketere e hono ana mō te hanga LSAW me te SMLS puta noa i Haina.
Mena kei te tata mai te hoko paipa, tonoa mai he whakatau utu. Ka tukuna atu e mātou tētahi e tere ai te whiwhi i ngā hua e hiahiatia ana e koe. Tukuna mai tō patai, ā, ka koa mātou ki te kōrero ngaio ki a koe.
Ko mātou, ko Jindalai Steel Group, he kaihanga, he kaweake, he kaipupuri hea, he kaiwhakarato hoki i te whānuitanga o ngā paipa maitai kounga teitei. He kiritaki ā mātou nō Thane, Mexico, Turkey, Pakistan, Oman, Israel, Egypt, Arab, Vietnam, Myanmar. Tukuna mai tō pātai, ā, ka koa mātou ki te kōrero ngaio ki a koe.
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Wā tuku: Hakihea-19-2022
