Paipu Weled
Huahana Huahana
ʻO nā paipu welded, ʻike ʻia hoʻi ʻo nā paipu kila welded, i hana ʻia e ka ʻōwili ʻana i nā papa kila a i ʻole nā ʻāpana i loko o kahi ʻano tubular a laila wili i nā hono. Me nā paipu liʻiliʻi, ʻo ia kekahi o nā ʻano nui ʻelua o nā paipu kila. ʻO kā lākou mau hiʻohiʻona nui ka hana maʻalahi, ke kumu kūʻai haʻahaʻa, a me nā ʻano kikoʻī ākea.
I. Ka Hoʻohālikelike Koʻikoʻi: Hoʻokaʻawaleʻia e ke Kaʻina Hana
Hoʻoholo nā kaʻina hana wili like ʻole i ka hana o nā paipu welded. ʻEkolu mau ʻano nui:
• Longitudinal Welded Pipe (ERW): Ma hope o ka ʻōwili ʻia ʻana o ke kaula kila i ʻāpana kea poepoe a huinahā paha, ua wiliwili ʻia kahi hili ma ka longitudinal (lōʻihi) ma ka paipu. Hāʻawi kēia i ka pono hana kiʻekiʻe a me ke kumu kūʻai haʻahaʻa, kūpono ia no ka lawe ʻana i ka wai haʻahaʻa haʻahaʻa (e like me ka wai a me ke kinoea) a me nā noi kākoʻo. Loaʻa nā kikoʻī maʻamau i nā anawaena liʻiliʻi a me waena (maʻamau ≤630mm).
• Spiral Welded Pipe (SSAW): Ua ʻōwili ʻia ke kaula kila ma ke ala helical a ua wili ʻia ka hili i ka manawa like, e hana ana i kahi wili spiral. ʻOi aku ke koʻikoʻi o ka weld seam, e hāʻawi ana i ka ʻoi aku ka maikaʻi o ka tensile a me ke kūlou ʻana i hoʻohālikelike ʻia me ka paipu wili wili pololei. ʻAe kēia i ka hana ʻana i nā paipu nui-diameter (a hiki i 3,000mm ke anawaena) a ua hoʻohana mua ʻia no ka lawe ʻana i ka wai kahe kiʻekiʻe (e like me ka ʻaila a me nā pipeline kinoea maoli) a me nā paipu hoʻoheheʻe kūloko.
• He paipu wiliwili kila kila: Hana ʻia mai ke kila kuhiliʻole ka lau/strip, welded me ka hoʻohana ʻana i nā kaʻina hana e like me TIG (tungsten inert gas arc welding) a me MIG (metal metal arc welding). Loaʻa iā ia ka corrosion a me ka wela kiʻekiʻe o ke kila kila a kūpono i nā noi e koi ana i nā mea kiʻekiʻe kiʻekiʻe, e like me ka hoʻoili ʻana i nā meaʻai, nā kemika, a me nā mea lapaʻau. Hoʻohana maʻamau ia i nā paipu pololei liʻiliʻi a me waena.
II. Nā Pōmaikaʻi Nui
1. Ke kumu kūʻai haʻahaʻa a me ka hana kiʻekiʻe: Ke hoʻohālikelike ʻia me ka paipu seamless (e koi ana i nā kaʻina hana paʻakikī e like me ke kuʻi ʻana a me ka ʻōwili ʻana), hāʻawi ka paipu welded i ka hoʻohana ʻana i nā mea waiwai kiʻekiʻe a me kahi kaʻina hana pōkole. ʻO nā kumukūʻai maʻamau he 20%-50% haʻahaʻa no nā kikoʻī like. Eia kekahi, hiki ke hana ʻia i nā pūʻulu a hoʻomau i ka hoʻokō ʻana i ka noi nui.
2. Hiki ke hoʻohālikelike ʻia: ʻO nā paipu me nā anawaena like ʻole (mai kekahi mau millimeters a i kekahi mau mika), ka mānoanoa o ka paia, a me nā ʻāpana keʻa (poe, square, rectangular) hiki ke hana ʻia ma ke koi e hoʻokō i nā pono pilikino o nā noi like ʻole, me ke kūkulu ʻana a me ka ʻoihana.
3. Hoʻomaʻamaʻa maʻalahi: ʻO nā mea like ʻole a me nā welds paʻa e hoʻomaʻamaʻa i ka ʻoki ʻana, ka ʻeli ʻana, ka kuʻi ʻana, a me nā hana hana ʻē aʻe, e hōʻoia i ka hoʻokomo pono ʻana.
III. Wahi Noi Nui
• Hana Hana: Hoʻohana ʻia i nā paipu wai a me nā paipu hoʻoheheʻe, nā paipu pale ahi, nā kākoʻo o ke kila (e like me ka scaffolding a me nā pale pale pale), nā puka a me nā puka makani (nā paipu welded rectangular), etc.
• Mahele ʻOihana: Hoʻohana ʻia e like me nā paipu lawe wai haʻahaʻa (ka wai, ka ea i hoʻopaʻa ʻia, ka mahu), nā lako kākoʻo paipu, nā pā hale hana, a pēlā aku; hoʻohana ʻia nā paipu wiliwili spiral nui i loko o ka ʻaila lōʻihi a me nā paipu kinoea maoli.
• Māhele Kaona: Hoʻohana ʻia i loko o nā paipu hoʻoheheʻe kūlanakauhale, nā pūnaewele paipu kinoea (medium a me ka haʻahaʻa haʻahaʻa), nā pou kukui alanui, nā kiaʻi kaʻa, etc.
• Ke ola o kēlā me kēia lā: Hoʻohana ʻia nā paipu liʻiliʻi i wili ʻia (e like me nā paipu kila kila) i loko o nā pale lako a me nā auwai kīhini (e like me nā paipu hoʻopau puʻupuʻu).
Hōʻike Huahana
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