1. ʻO ke kalakala
ʻO Metallography kekahi o nā ala nui no ka hoʻokaʻawale ʻana i nā paipu kila welded maipaipu kila ʻole. ʻAʻole i hoʻohui ʻia nā mea hoʻoheheʻe kiʻekiʻe i ke kūpaʻa kiʻekiʻe, no laila ua haiki loa ka weld seam i ka paipu kila welded. Inā hoʻohana ʻia ke ʻano o ka wili ʻana a me ka corrosion, ʻaʻole hiki ke ʻike maopopo ʻia ke kaʻina weld. I ka manawa i hoʻopaʻa ʻia ai ke kiʻekiʻe-frequency resistance welded steel pipe a ʻaʻole i hoʻopaʻa ʻia i ka wela, e ʻokoʻa loa ke ʻano o ka weld mai ka mea makua o ka paipu kila. I kēia manawa, hiki ke hoʻohana ʻia ke ʻano metallographic e hoʻokaʻawale i nā paipu kila welded mai nā paipu kila ʻole. I ke kaʻina hana o ka hoʻokaʻawale ʻana i nā paipu kila ʻelua, pono ia e ʻoki i kahi laʻana liʻiliʻi me ka lōʻihi a me ka laulā o 40mm ma ka lae hoʻoheheʻe, hana i ka wili ʻana, ka wili maikaʻi a me ka polishing, a laila e nānā i ke ʻano ma lalo o kahi microscope metallographic. Ke ʻike ʻia ka ferrite a me ka widmanstatten, nā mea makua a me ka hoʻolālā weld zone, hiki ke hoʻokaʻawale pololei ʻia ka paipu kila welded a me ka paipu kila ʻole.
2. ʻO keʻano o ka corrosion
I ke kaʻina o ka hoʻohana ʻana i ke ʻano corrosion e hoʻokaʻawale i nā paipu kila welded a me nā paipu kila ʻole, pono e hoʻonani ʻia ka weld o ka paipu kila welded i hana ʻia. Ma hope o ka pau ʻana o ka polishing, pono e ʻike ʻia nā māka polishing. A laila, hoʻomaʻamaʻa ʻia ka maka hope me ka sandpaper ma ka weld, a mālama ʻia ka maka hope me 5% nitric acid alcohol solution. Inā ʻike ʻia kahi weld maopopo, hiki ke hōʻoia i ka paipu kila he paipu kila welded. ʻAʻohe ʻokoʻa ʻokoʻa i ka maka hope o ka paipu kila ma hope o ka ʻino.
3. Hoʻokaʻawale i nā paipu kila welded a me nā paipu kila ʻole e like me ke kaʻina hana
I ke kaʻina hana ʻokoʻapaipu kila weldeda me nā paipu kila maʻemaʻe e like me ke kaʻina hana, ua hoʻopiliʻia nā paipu kila a pau e like me ke kaʻina hana e like me ka'ōwili anuanu a me ka extrusion. Eia kekahi, i ka wā e hoʻohana ʻia ai nā paipu wiliwili kiʻekiʻe, haʻahaʻa haʻahaʻa arc arc a me nā paipu kuʻi kūʻē e wili i nā paipu kila, e hoʻokumu ʻia ka wili paipu spiral a me ka hoʻoheheʻe ʻana i ka paipu kuʻi pololei, e hana ai i nā paipu kila poepoe, nā paipu kila square, ke kila oval. paipu, paipu kila triangular, paipu kila hexagonal, paipu kila mae, paipu kila octagonal, a me na paipu kila paʻakikī. I ka pōkole, e hana nā kaʻina hana like ʻole i nā paipu kila o nā ʻano like ʻole, i hiki ke ʻike maopopo ʻia nā paipu kila welded a me nā paipu kila ʻole. Eia naʻe, i ke kaʻina hana o ka hoʻokaʻawale ʻana i nā paipu kila maʻemaʻe e like me ke kaʻina hana, ua ʻike nui ʻia lākou e like me ke ʻano o ka ʻōwili wela a me ke ʻano o ka ʻōwili ʻana i ke anuanu, a ʻelua mau ʻano nui o nā paipu kila maʻemaʻe, ʻo ia hoʻi nā paipu kila wela a me ke anuanu. paipu kila wili ʻole. Hoʻokumu ʻia nā paipu kila maʻemaʻe wela e ka perforation, ka ʻōwili ʻana a me nā kaʻina hana ʻē aʻe, ʻoi aku ka nui-diameter a me ka mānoanoa seamless kila paipu ʻia e kēia kaʻina; Hoʻokumu ʻia nā paipu anu i ka huki anu o nā paipu, a ʻoi aku ka ikaika o ka mea, akā maʻalahi kona ʻaoʻao waho a me loko.
Ka manawa hoʻouna: Mei-17-2024