Ma ke kahua o ka aila wili a me ka aila luawai, kiʻekiʻe-frequency uila kū'ē welded casing (i kapaia e like me ERW casing) hoohalike me ka seamless casing mea kiʻekiʻe dimensional pololei, weld toughness, anti-extrusion o kiʻekiʻe-hana, a me ka haʻahaʻa kumu kūʻai pono. ua hoʻohana nui ʻia ma nā ʻāina ʻē, a loaʻa nā hopena maikaʻi.

ʻO nā hiʻohiʻona o ka pahu ERW (hoʻohālikelike ʻia me ka pahu liʻiliʻi)
Kiʻekiʻe dimensional pololei: ERW casing e hoʻohana ana i ka mechanical sizing kaʻina ma hope o ka hoʻoheheʻe 'ana, precision seamless casing ua hoʻonui i kona nui (waho anawaena, paia mānoanoa, poepoe, etc.), a me ka waho anawaena deviation 'aʻole i oi aku mamua o ± 0 Average .5%. E like me ka mea i hana ʻia e Nippon Steel 6244.5 n'un ERW casing mānoanoa ka mānoanoa deviation o <0.10 wili like seamless casing maʻamau deviation he 0.41 wili.

ʻO ka paʻakikī weld maikaʻi: Hiki ke hōʻoia ʻia ke kaʻina hana hoʻoheheʻe ERW e kiʻi i ka ʻike C, S a me P he haʻahaʻa i loko o ka hui ʻāpana a me ke kumu kumu o ka ikaika kiʻekiʻe, kiʻekiʻe paʻakikī o ka weld, ka weld toughness seamless lima a hiki i ka puʻu lima. .

Anti-extrusion nā waiwai antiknock: ikaika kiʻekiʻe 30% a i 40% i hoʻohālikelike ʻia me ka pahu like ʻole API, ERW casing anti-extrusion, nā waiwai anti-knock (kokoke kūloko) ma kahi o 50% kiʻekiʻe.

ʻenehana kiʻekiʻe, ka mana o ka maikaʻi o ka huahana: ERW lima lima kumu metala kaohi ʻōwili ʻia, isotropic, 100% hoʻāʻo ʻole luku.

Ke kumu kūʻai haʻahaʻa: ke hoʻohālikelike ʻia me ka casing seamless like, ERW casing 5% a 10% haʻahaʻa kumu kūʻai, kiʻekiʻe kiʻekiʻe, kiʻekiʻe kiʻekiʻe o ka mechanization a me ka automation, haʻahaʻa haʻahaʻa ikehu a me ka hana; ERW casing pau huahana helu o 93% a hiki i 98%, a me ka seamless casing pau huahana helu o 85% a 90%; He 40% ka haʻahaʻa o ka ERW casing i ka hoʻopukapuka pāhana holoʻokoʻa ma mua o ka papahana casing seamless.

ʻO nā hiʻohiʻona ʻenehana o ka pahu ERW
(1) Ke koho ʻana i nā mea maka i hoʻopaʻa ʻia i ka rolling coil, ka mana koʻikoʻi o ka ʻike o S a me P, a me ke kalapona like, maʻamau W (S) ≤ 0.015%, ke kalapona like ≤ O. 25%. A ʻo ka hoʻohana ʻana i nā mea micro-alloying e like me Nb, V, Ti, a me cu e hoʻomaikaʻi i ka paʻakikī o ke kila e hoʻomaikaʻi i ka weldability a me ka pale ʻana i ka corrosion.

(2) ʻO ka wili mānoanoa ma hope o ka mālama ʻana i ka wili palaoa, hiki ke hōʻemi i nā burrs welding i hoʻokumu ʻia e ka overheating a me ka oxidation kūloko.

(3) Hoʻohana nui ʻia ka spiral looper no ka hana mau ʻana, ʻaʻohe roll-to-volume batch production i hana ʻia e ka welding standstill, ka hopena o ka hoʻomaka hou ʻana i ka welding, ka wā wiliwili, ka hiki ʻole o ka uila ma muli o nā hemahema o ka huahana.

(4) Hoʻohana maʻamau i ka hoʻoneʻe hydraulic hou o ka hana burrs, casing i loko burr kiʻekiʻe mana 1.14 NLNL.

(5) ʻO nā ʻāpana wiliwili koʻikoʻi, me ka mana hoʻokomo, ka wiliwili ʻana i ka ʻano V-like, ka wikiwiki wili, ka hoʻomalu ʻana i ka wela. ʻO ka wela welding e ka wikiwiki hoʻoheheʻe kiʻekiʻe o ka mana mana loop paʻa, kaohi ʻana i ka fluctuation o lalo o ± 5 ℃.

(6) Hoʻoikaika i ka mālama ʻana i ka wela ma hope o ka weld, ma o ka mālama ʻana i ka wela ma hope o ka weld e hoʻomaikaʻi i ka hui a me ke koʻikoʻi kūloko o ka weld zone.

(7) Ka hana ʻana i ka ikaika kiʻekiʻe a me ka ʻāpana nui, e hōʻemi ana i ka pololei nui i pau.

(8) No ka weld a me ke kila ma ke ʻano he laina holoʻokoʻa a i ʻole ka hoʻāʻo ʻole ʻana i ka hoʻāʻo ʻole, ka ʻike kūpono a me ka pololei o nā hemahema, i mea e hoʻoponopono pono ai i ke kaʻina hana e hōʻoia i ka maikaʻi o ka huahana.