He aha ka paipu kila ERW? ʻO ka ʻokoʻa nui ma waena o ka paipu kila ERW (Electric Resistance Welding, i hoʻopaʻa ʻia ʻo ERW) a me ka paipu kila maʻemaʻe ʻo ia ka ERW he weld seam, ʻo ia hoʻi ke kī i ka maikaʻi o ka paipu kila ERW. ʻO ka ʻenehana hana a me nā mea hana o ka paipu kila ERW o kēia wā, ma muli o ke ao holoʻokoʻa me ka hoʻoikaika paʻa ʻole o ʻAmelika Hui Pū ʻIa a me nā ʻāina ʻē aʻe i nā makahiki, ua hoʻoholo maikaʻi ʻia ka seamlessness o nā paipu kila ERW. Hoʻokaʻawale kekahi poʻe i ka seamlessness o nā paipu kila ERW i ka seamlessness geometric a me ka seamlessness kino. ʻO Geometric seamless ka hoʻomaʻemaʻe ʻana i nā paipu kila ERW. ʻO nā burrs o loko a me waho. Ma muli o ka hoʻomaikaʻi mau ʻana a me ka hoʻomaikaʻi ʻana i ke ʻano o ka ʻōnaehana hoʻoneʻe burr kūloko a me nā mea hana ʻoki, ʻoi aku ka maikaʻi o ka hana ʻana o nā burr kūloko o nā paipu kila nui a me waena. Hiki ke hoʻomalu ʻia nā burrs kūloko ma kahi o -0.2mm~+O.5mm a ʻaʻohe kino. ʻO ka Seamization e pili ana i ka ʻokoʻa ma waena o ka hoʻolālā metallographic i loko o ka weld a me ka metala kumu, e hopena i ka emi ʻana o nā waiwai mechanical o ka wahi weld. Pono e hana ʻia nā ʻano like ʻole. ʻO ke kaʻina hana wela wela o nā paipu kila ERW e hoʻoheheʻe ʻia ka paipu. , nā wahi hiʻona ʻē aʻe. I waena o lākou, ʻo ke ʻano o ka superheated zone he austenite ma muli o ka wela welding ma luna o 1000 ° C. E ulu wikiwiki ana nā hua, a e hoʻokumu ʻia kahi ʻāpana aniani koʻikoʻi paʻakikī a palupalu ma lalo o nā kūlana hoʻoluʻu. Eia kekahi, ʻo ka loaʻa ʻana o kahi gradient wela e hoʻoulu i ke koʻikoʻi welding. ʻO kēia ka hopena i kahi kūlana i haʻahaʻa ai nā ʻano mechanical o ka weld wahi ma mua o nā mea kumu a loaʻa ka seamlessness kino. Ma o ke kaʻina hana hoʻomalu wela maʻamau o ka weld seam, ʻo ia hoʻi, me ka hoʻohana ʻana i kahi mea hoʻomehana induction induction e wela ai ka wahi weld seam i AC3 (927 ° C), a laila e hana i kahi kaʻina hoʻoluʻu ea me ka lōʻihi o 60m. a me ka wikiwiki o 20m / min, a laila hoʻoheheʻe wai inā pono. Hiki i ka hoʻohana ʻana i kēia ʻano hana ke hoʻopau i ke kaumaha, hoʻomaʻemaʻe a hoʻomaʻemaʻe i ke ʻano, a hoʻomaikaʻi i nā ʻano mechanical piha o ka welding wela i hoʻopili ʻia, i kēia manawa, ua hoʻohana maʻamau nā ʻāpana ERW holomua o ka honua i kēia ʻano hana e hana welds, a ua hoʻokō. nā hopena maikaʻi. ʻO nā paipu kila ERW kiʻekiʻe ʻaʻole wale ʻO ka weld seam ʻaʻole hiki ke ʻike ʻia, a hiki i ka coefficient seam weld i ka 1, e hoʻokō ana i kahi hoʻokūkū ma waena o ka hale weld a me ka mea kumu. Loaʻa i nā paipu kila ERW ka maikaʻi o ka hoʻohana ʻana i nā wili wela e like me nā mea maka, a hiki ke hoʻomalu ʻia ka mānoanoa o ka pā ma kahi o ± 0.2mm. ʻO nā wēlau ʻelua o ka paipu kila E like me ka American APl standard a i ʻole GB / T9711.1 maʻamau, loaʻa iā ia nā mea maikaʻi o ka beveling hopena a me ka hāʻawi ʻana i ka lōʻihi. I kēia mau makahiki i hala iho nei, ua hoʻohana nui ʻia nā ʻoihana pūnaewele pipeline kūlohelohe a me nā hui kinoea i nā paipu kila ERW ma ke ʻano he paipu kila nui i nā ʻoihana pipeline kūlanakauhale.