Menene "Pipeline Steel"?

Bututun karfe aikace-aikace

Bututun karfesamfurin siffofin hada da sumul karfe bututu da welded karfe bututu, wanda za a iya raba uku Categories: mai tsayi, high-sulfur yankunan da seabed kwanciya.Waɗannan bututu tare da matsananci aiki yanayi da dogon Lines kuma ba su da sauki a kula, kuma suna da m ingancin bukatun.

Kalubalan da karafan bututun mai ke fuskanta sun hada da: galibin filayen mai da iskar gas suna cikin yankunan polar, tudun kankara, sahara, da teku, kuma yanayin yanayi yana da tsauri; ko don inganta haɓakar sufuri, diamita na bututun yana karuwa akai-akai, kuma matsin lamba yana karuwa akai-akai.

Pipeline Karfe Properties

Daga m kimantawa na ci gaban Trend na man fetur da kuma iskar gas bututu, bututun kwanciya yanayi, babban gazawar halaye da kuma gazawar haddasawa, bututun karfe kamata da kyau inji Properties ( lokacin farin ciki bango, high ƙarfi, high tauri, sa juriya), kuma ya kamata kuma suna da manyan diamita, Ya kamata kuma da manyan diamita, weldability, sanyi da kuma low zazzabi juriya, lalata juriya (CO2), jure wa seawater da HIC yi, da dai sauransu.

① Ƙarfi mai ƙarfi

Bututun ƙarfe ba wai kawai yana buƙatar ƙarfin ƙarfi mai ƙarfi da ƙarfin samar da ƙarfi ba, amma kuma yana buƙatar ƙimar yawan amfanin ƙasa ya kasance cikin kewayon 0.85 ~ 0.93.

② Babban tasiri tauri

babban tasiri tauri zai iya saduwa da bukatun hana fasa.

③ Low ductile-gaggautsa zafin jiki

Yankuna masu ƙarfi da yanayin yanayi suna buƙatar bututun ƙarfe don samun isassun ƙarancin ductile-gaggawa canjin yanayin zafin jiki. Yankin ƙarfi na DWTT (Drop Weight Tear Test) ya zama babban maƙasudin kulawa don hana gazawar bututun bututun. Babban ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bututun ya kamata ya zama ≥85% a mafi ƙarancin zafin aiki.

④ Kyakkyawan juriya ga fashewar hydrogen-induced (HIC) da sulfide stress corrosion cracking (SSCC)

⑤ Kyakkyawan aikin walda

Kyakkyawan weldability na karfe yana da matukar muhimmanci don tabbatar da mutunci da ingancin walda na bututun.