1. Metallography
Metallography ke e 'ngoe ea mekhoa e ka sehloohong ea ho khetholla lipeipi tsa tšepe tse cheselitsoeng ho tlohalipeipi tsa tšepe tse se nang moroko. Liphaephe tsa tšepe tse nang le maqhubu a phahameng ha li kenye lisebelisoa tsa ho tjheseletsa, kahoo seam ea weld ka phala ea tšepe e tšesaane haholo. Haeba ho sebelisoa mokhoa oa ho sila ka mahlahahlaha ebe ho sebelisoa kutu, seam sa weld ha se bonahale ka ho hlaka. Hang ha phala ea tšepe e cheselitsoeng ka maqhubu a phahameng e cheselitsoe 'me e e-s'o fumane phekolo ea mocheso, mohaho oa weld o tla fapana haholo le thepa ea motsoali oa pipe ea tšepe. Ka nako ena, mokhoa oa metallographic o ka sebelisoa ho khetholla liphaephe tsa tšepe tse cheselitsoeng ho liphaephe tsa tšepe tse se nang moeli. Nakong ea ho khetholla liphaephe tse peli tsa tšepe, hoa hlokahala ho khaola sampuli e nyenyane ka bolelele le bophara ba 40mm sebakeng sa welding, ho etsa ho sila ka thata, ho sila hantle le ho belisoa, ebe u hlokomela sebopeho tlas'a microscope ea metallographic. Ha ferrite le widmanstatten, thepa ea motsoali le sebopeho sa weld zone li bonoa, phala ea tšepe e cheselitsoeng le phala ea tšepe e se nang seam e ka khetholloa ka nepo.
2. Mokhoa oa ho senya
Ts'ebetsong ea ho sebelisa mokhoa oa kutu ho khetholla liphaephe tsa tšepe tse cheselitsoeng le liphaephe tsa tšepe tse se nang moroalo, cheseletso ea phala ea tšepe e lokisitsoeng e lokela ho belisoa. Ka mor'a hore ho belisoa ho phethoe, matšoao a ho bentša a lokela ho bonoa. Joale, sefahleho sa ho qetela se belisoa ka sandpaper ho weld, 'me sefahleho sa ho qetela se phekoloa ka tharollo ea joala ea nitric acid ea 5%. Haeba ho hlaha weld e hlakileng, ho ka pakoa hore phala ea tšepe ke phala ea tšepe e cheselitsoeng. Ha ho na phapang e totobetseng sefahlehong sa ho qetela sa phala ea tšepe e se nang moeli ka mor'a ho senya.
3. Khetholla liphaephe tsa tšepe tse cheselitsoeng le liphaephe tsa tšepe tse se nang moeli ho latela mokhoa ona
Tseleng ya ho kgethollalipeipi tsa tšepe tse cheselitsoengle liphaephe tse seamless tšepe ho ea ka tshebetso, liphaephe tsohle tjheseletsa tšepe ba welded ho ya ka dithulaganyo tse kang batang-rola le extrusion. Holim'a moo, ha liphaephe tse cheselletsang li-arc tse nang le maqhubu a tlase le liphaephe tsa tjheseletsa li sebelisoa ho cheselletsa liphaephe tsa tšepe, ho tla etsoa welding ea spiral pipe le welding e otlolohileng ea seam pipe e tla etsa liphaephe tse chitja tsa tšepe, liphaephe tsa tšepe tse lisekoere, tšepe ea oval. liphaephe, liphaephe tsa tšepe tse khutlo-tharo, lipeipi tsa tšepe tse mahlakore a tšeletseng, lipeipi tsa tšepe tse ponneng, lipeipi tsa tšepe tse mahlakore a mabeli, esita le lipeipi tsa tšepe tse rarahaneng haholoanyane. Ka bokhutšoanyane, lits'ebetso tse fapaneng li tla theha liphaephe tsa tšepe tsa libopeho tse fapaneng, e le hore liphaephe tsa tšepe tse cheselitsoeng le lipeipi tsa tšepe tse se nang moeli li ka khetholloa ka ho hlaka. Leha ho le joalo, nakong ea ho khetholla liphaephe tsa tšepe tse se nang moroalo ho ea ka mokhoa ona, li khetholloa haholo-holo ho ea ka mekhoa ea phekolo ea ho bilika ho chesang le e batang, 'me lipeipi tsa tšepe tse se nang moroallo li boetse li na le mefuta e' meli e meholo, e leng lipeipi tsa tšepe tse se nang moroallo tse chesang le tse batang. lipeipi tsa tšepe tse koetsoeng. Liphaephe tsa tšepe tse kentsoeng ka mocheso o chesang li entsoe ka ho phunyeha, ho kolobisoa le mekhoa e meng, haholo-holo lipeipi tsa tšepe tse se nang moroalo tse kholo le tse teteaneng li kenngoa ka mokhoa ona; liphaephe tse batang li entsoe ka ho hula ha serame sa liphaephe, 'me matla a thepa a tlaase, empa bokantle ba eona ba ka ntle le ba ka hare bo boreleli.
Nako ea poso: May-17-2024