ʻO nā koi ʻenehana no nā paipu wili wili pololei: ʻO nā koi ʻenehana a me ka nānā ʻana i nā paipu wili wili pololei e pili ana i ka GB3092 "Welded Steel Pipes for Low-Pressure Fluid Transport". ʻO ke anawaena nominal o ka paipu welded he 6 ~ 150mm, ka mānoanoa o ka paia nominal he 2.0 ~ 6.0mm, a ʻo ka lōʻihi o ka paipu welded maʻamau maʻamau 4 ~ 10 mika, hiki ke hoʻouna ʻia mai ka hale hana i ka lōʻihi paʻa a i ʻole ka lōʻihi. Pono ka ʻili o ka paipu kila, a ʻaʻole ʻae ʻia nā hemahema e like me ka pelu ʻana, nā māwae, delamination, a me ka wili ʻana. ʻAe ʻia ka ʻili o ka paipu kila e loaʻa nā hemahema liʻiliʻi e like me nā ʻōpala, nā ʻōpala, nā weld dislocations, nā kuni, a me nā ʻōpala ʻaʻole i ʻoi aku ma mua o ka neʻe maikaʻi ʻole o ka mānoanoa o ka pā. ʻAe ʻia ka mānoanoa o ka mānoanoa o ka pā ma ka weld a me ka hiki ʻana o nā kaola weld kūloko. Pono nā paipu kila welded i nā ho'āʻo hana mechanical, nā ho'āʻo pālahalaha, a me nā ho'āʻo hoʻonui, a pono e hoʻokō i nā koi i kuhikuhi ʻia ma ka maʻamau. Hiki i ka paipu kila ke kū i ke kaomi o loko o 2.5Mpa a mālama i ka leakage no hoʻokahi minuke. Ua ʻae ʻia ka hoʻohana ʻana i ke ala ʻike flaw eddy i kēia manawa ma kahi o ka hoʻāʻo hydrostatic. Lawe ʻia ʻo Eddy flaw detection e ka GB7735 maʻamau "Eddy Current Flaw Detection Inspection Method for Steel Pipes". ʻO ke ʻano o ka eddy flaw detection method o ka hoʻoponopono ʻana i ka probe ma ke kiʻi, mālama i kahi mamao o 3 ~ 5mm ma waena o ka ʻike kīnā a me ka weld, a hilinaʻi i ka neʻe wikiwiki o ka paipu kila e hana i kahi scan piha o ka weld. Hoʻomaʻamaʻa ʻia ka hōʻailona ʻike hemahema a hoʻokaʻawale ʻia e ka eddy flaw detector. No ka hoʻokō ʻana i ke kumu o ka ʻike hemahema. Ma hope o ka ʻike ʻia ʻana o ka hewa, ʻoki ʻia ka paipu welded i ka lōʻihi i ʻōlelo ʻia me kahi ʻike lele a ʻōwili ʻia mai ka laina hana ma o ke kiʻi flip. Pono e hoʻopaʻa ʻia nā ʻaoʻao ʻelua o ka paipu kila, a hoʻopaʻa ʻia nā paipu i hoʻopau ʻia i loko o nā pūpū hexagonal ma mua o ka haʻalele ʻana i ka hale hana.

ʻO ke ʻano o ka hoʻoheheʻe ʻana i ka paipu kila pololei: ʻO ka paipu kila he paipu kila nona ke kuʻina wili e like me ka ʻaoʻao longitudinal o ka paipu kila. ʻOi aku ka ikaika o ka paipu kila ma mua o ka paipu wili wili pololei. Hiki iā ia ke hoʻohana i nā billet ʻoi aku ka liʻiliʻi e hana i nā paipu welded ʻoi aku ka nui, a hiki ke hoʻohana pū i nā bila o ka laulā like e hana i nā anawaena paipu. Nā paipu wiliwili like ʻole. Eia naʻe, ke hoʻohālikelike ʻia me nā paipu seam pololei o ka lōʻihi like, hoʻonui ʻia ka lōʻihi weld e 30 ~ 100%, a ʻoi aku ka haʻahaʻa o ka wikiwiki. No laila he aha kāna mau ʻano hana?

1. Ke kila kila: He ʻano hana kaomi e hoʻohana ai i ka hopena pānaʻi o ka hāmare forging a i ʻole ke kaomi o kahi paʻi e hoʻololi i ka blank i ke ʻano a me ka nui a mākou e makemake ai.
2. Extrusion: He hana hana kila ia e hoʻokomo ʻia ai ka metala i loko o kahi cylinder extrusion paʻa a hoʻohana ʻia ke kaomi ma kekahi ʻaoʻao e hoʻokuʻu i ka metala mai kahi puka make i kuhikuhi ʻia e loaʻa i kahi huahana i hoʻopau ʻia o ke ʻano like a me ka nui. Hoʻohana nui ʻia no ka hana ʻana i nā metala non-ferrous. Mea kila.
3. Kaʻa ʻana: He ʻano hana hoʻoikaika ʻana e hele ai ke kila kila ma ka ʻā (o nā ʻano ʻano like ʻole) ma waena o nā huila wili. Ma muli o ke kaomi ʻana o nā wili, hoʻemi ʻia ka ʻāpana mea a hoʻonui ʻia ka lōʻihi.
4. Ke kaha kiʻi kila: He hana hana ia e huki ai i ka metala i ʻōwili ʻia (ke ʻano, ka paipu, ka huahana, a me nā mea ʻē aʻe) ma o ka lua make e hōʻemi i ka ʻāpana keʻa a hoʻonui i ka lōʻihi. Hoʻohana ʻia ka hapa nui o lākou no ka hana anu.