ʻO ke ʻano o ka hoʻohana ʻana i nā paipu seamless i ka hana ʻana a me ke ola ke ulu ākea a ākea. ʻO ka hoʻomohala ʻana o nā paipu seamless i nā makahiki i hala iho nei ua hōʻike i kahi ʻano maikaʻi. No ka hana ʻana i nā paipu liʻiliʻi, ʻo ia hoʻi e hōʻoia i kāna hana kiʻekiʻe a me ka hana ʻana. Ua ʻae ʻia ʻo HSCO He nui nā mea hana i hoʻomaikaʻi iā ia, a e hāʻawi wau iā ʻoe i nā hoʻolauna pōkole e pili ana i ke kaʻina hana o nā paipu seamless ma aneʻi, i hiki i nā mea āpau ke hoʻomaopopo.

Hoʻokaʻawale ʻia ke kaʻina hana o nā paipu kila seamless i ʻelua mau ʻanuʻu nui:

1. 'Owili wela (extruded seamless paipu kila): poepoe paipu billet → wela → hou aku → ekolu-roll kea olokaa, hoomau olokaa a extrusion → wehe 'ana → nui (ai 'ole ho'ēmi) → hooluolu → hoʻopololei → hydraulic ho'āʻo (aiʻole flaw detection) → hōʻailona → hale kūʻai

ʻO ka mea maka no ka ʻōwili ʻana i ka paipu liʻiliʻi he poepoe tube billet, a e ʻoki ʻia ka embryo poepoe e ka mīkini ʻokiʻoki e ulu i nā billet me ka lōʻihi o 1 mika, a lawe ʻia i ka umu e ke kāʻei conveyor. Hāʻawi ʻia ʻo Billet i loko o ka umu e wela ai, ʻo ka mahana ma kahi o 1200 degere Celsius. ʻO ka hydrogen a i ʻole acetylene ka wahie, a ʻo ka mālama ʻana i ka mahana i loko o ka umu he kumu nui.

Ma hope o ka puka ʻana o ka paipu poepoe i waho o ka umu ahi, pono e hou ʻia ma o ka ʻoi kaomi. ʻO ka mea maʻamau, ʻo ka piercer maʻamau ʻo ia ka piercer cone roll. ʻO kēia ʻano piercer he kiʻekiʻe ka hana hana, maikaʻi ka huahana maikaʻi, hoʻonui nui perforation anawaena, a hiki ke komo i nā ʻano kila like ʻole. Ma hope o ka ʻō ʻana, ʻolokaʻi ʻia ka billet paipu poepoe, ʻōwili mau ʻia a hoʻokuʻu ʻia paha e nā ʻōwili ʻekolu. ʻO kēia ke kaʻina hana o ka hana ʻana i ka paipu kila ʻole, no laila pono e hana pono. Ma hope o ka extrusion, pono e wehe i ka paipu a me ka nui. ʻO ka hoʻopaʻa ʻana i nā lua i loko o ka billet e hana i kahi paipu. Hoʻoholo ʻia ke anawaena o loko o ka paipu kila e ka lōʻihi o ke anawaena o waho o ka drill bit o ka mīkini sizing. Ma hope o ka nui o ka paipu kila, komo ia i loko o ka hale hoʻomaha a hoʻomaʻalili ʻia e ka wai. Ma hope o ka maʻalili ʻana o ka paipu kila, e hoʻopololei ʻia. Ma hope o ka hoʻopololei ʻana, hoʻouna ʻia ka paipu kila i ka mea ʻike kīnā metala (a i ʻole hydraulic test) e ke kāʻei conveyor no ka ʻike hewa o loko. Ma hope o ka hana, inā loaʻa nā māwae, nā ʻōpū a me nā pilikia ʻē aʻe i loko o ka paipu kila, e ʻike ʻia lākou.

Ma hope o ka nānā ʻana i ka maikaʻi o nā paipu kila, pono ke koho lima paʻa. Ma hope o ka nānā ʻana i ka maikaʻi o ka paipu kila, e pena i ka helu serial, kikoʻī, helu pūʻulu hana, etc. me ka pena. A huki ʻia i loko o ka hale kūʻai e ka crane. E hōʻoia i ka maikaʻi o ka paipu kila maʻemaʻe a me ka hana o ke kaʻina kikoʻī.

2. He paipu kila maʻemaʻe i huki ʻia (ʻōwili) ʻia: pahu pōʻai pōʻai → hoʻomehana → hoʻopiʻi → poʻomanaʻo → annealing → pickling → ʻaila (kau keleawe) → kaha kiʻi anuanu (cold rolling) → paipu blank → mālama wela → straightening → hydrostatic hoʻāʻo (ʻike hewa) → māka → waiho.

Ma waena o lākou, ʻoi aku ka paʻakikī o ke ʻano o ka ʻōwili ʻana o ka paipu kila liʻiliʻi i huki ʻia (rolled) ma mua o ka ʻōwili wela (extruded seamless steel tube). ʻO nā ʻanuʻu mua ʻekolu o kā lākou kaʻina hana hana like. No laila, maʻalahi ka hana. ʻO ka ʻokoʻa, ʻo ka hoʻomaka ʻana mai ka ʻanuʻu ʻehā, ma hope o ka hakahaka o ka pahu pōʻai, pono ke poʻo a hoʻopili ʻia. Ma hope o ka hoʻopili ʻana, e hoʻohana i kahi wai waikawa kūikawā no ka pickling. Ma hope o ka pickling, e hoʻopili i ka ʻaila. A laila hahai ʻia e ke kaha kiʻi anuanu multi-pass (cold rolling) a me ka mālama wela kūikawā. Ma hope o ka mālama ʻana i ka wela, e hoʻopololei ʻia. Ma hope o ka hoʻopololei ʻana, hoʻouna ʻia ka paipu kila i ka mea ʻike kīnā metala (a i ʻole hydraulic test) e ke kāʻei conveyor no ka ʻike hewa o loko. Inā loaʻa nā māwae, nā ʻōpū a me nā pilikia ʻē aʻe i loko o ka paipu kila, e ʻike ʻia lākou.

Ma hope o ka pau ʻana o kēia mau kaʻina hana, pono e hele nā ​​paipu kila i ke koho manual ma hope o ka nānā ʻana i ka maikaʻi. Ma hope o ka nānā ʻana i ka maikaʻi o ka paipu kila, e pena i ka helu serial, kikoʻī, helu pūʻulu hana, etc. me ka pena. Ma hope o ka pau ʻana o kēia mau hana a pau, e hoʻokiʻekiʻe ʻia lākou i loko o ka hale kūʻai e kahi crane.

Pono e mālama pono ʻia nā paipu kila maʻemaʻe ʻole i waiho ʻia i loko o ka waihona a mālama ʻia i ka ʻepekema e hōʻoia i ka haʻalele ʻana o nā paipu kila kila maikaʻi ʻole i ka hale hana ke kūʻai ʻia.