Pehea e wehe ai i ka unahi oxide ma ka paipu huinaha nui anawaena?

Hoʻohana ʻia ka solvent a me ka emulsion e hoʻomaʻemaʻe i ka ʻili opaipu huinahalike-nuie wehe i ka aila, ka momona, ka lepo, ka lubricant a me nā mea ola like. Eia naʻe, ʻaʻole hiki ke hoʻoneʻe i ka ʻōpala, ka unahi oxide a me ka flux ma ka ʻili o ka paipu square square nui, no laila ua hoʻohana wale ʻia ia ma ke ʻano he mea kōkua i ka hana anti-corrosion.

ʻO ka maʻamau, hoʻohana ʻia nā ʻano kemika a me ka electrolytic no ka mālama ʻana i ka pickling. Hoʻohana wale ʻia ka pickling kemika no ka pipeline anticorrosion, hiki ke wehe i ka unahi oxide, ka ʻōpala a me ka uhi kahiko. I kekahi manawa, hiki ke hoʻohana ʻia e like me ka reprocessing ma hope o ka puhi ʻana i ke one. ʻOiai hiki i ka hoʻomaʻemaʻe kemika ke hiki i ka ʻili i kahi pae o ka maʻemaʻe a me ka ʻinoʻino, he pāpaʻu kona heleuma a maʻalahi hoʻi e hoʻohaumia i ke kaiapuni a puni. E waiho ʻia nā paipu huinahā nui anawaena no ka ʻae ʻia ʻana i nā pūʻulu, a e hoʻokō nā lula puʻupuʻu i nā ʻōlelo o nā kūlana huahana pili.

ʻO nā mea nānā, ka nui o ka laʻana, nā kūlana sampling a me nā ʻano hoʻāʻo o nā paipu square square nui e like me nā ʻōlelo o nā kūlana huahana pili. Me ka ʻae o ka mea koi, ka hot-rolledpaipu huinahalike-nuihiki ke hoʻokolo ʻia i nā pūʻulu e like me nā pūʻulu kumu i ʻōwili ʻia.

Inā ʻaʻole i hoʻokō nā hopena hoʻāʻo o nā paipu square nui-diameter i nā koi o nā kūlana huahana, e koho ʻia nā mea kūpono ʻole, a e lawe ʻia nā helu pālua o nā laʻana mai ka pūʻulu like o nā paipu huinahā nui-diameter no ka nānā hou ʻana. nā mea kūpono ʻole. Inā ʻaʻole kūpono ka hopena o ka nānā hou ʻana (me nā kuhikuhi i koi ʻia e ka hoʻāʻo ʻana o ka papahana), ʻaʻole e hāʻawi ʻia ka pūʻulu o nā paipu huinahā nui. Inā hiki ʻole kēia mau mea nānā i ka nānā mua ʻana, ʻaʻole ʻae ʻia ka nānā hou ʻana: a He mau kiko keʻokeʻo ma ka ʻiʻo macroploid; b. Microstructure.