A fagen kera bututu, ana buƙatar bin ka'idodi daban-daban da ƙayyadaddun bayanai don tabbatar da inganci da amincin samfurin ƙarshe.ASTM A139yana ɗaya daga cikin ma'auni wanda ke taka muhimmiyar rawa wajen samar da bututun ƙarfe don aikace-aikace daban-daban.
ASTM A139 shine ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun wutar lantarki (arc) welded karfe bututu (NPS 4 da sama).Ya ƙunshi buƙatun don karkace kabu electrofusion (baka) welded, bakin ciki bango, austenitic karfe bututu ga lalata ko high zafin jiki aikace-aikace.Wannan ma'auni yana fayyace buƙatun kayan aiki, hanyoyin masana'antu, girma da kaddarorin inji na bututun ƙarfe.
Abubuwan bukatu na ASTM A139 sun ƙayyade nau'ikan da maki na ƙarfe waɗanda za a iya amfani da su don yin bututu.Wannan ya haɗa da sinadarai na ƙarfe, wanda dole ne ya ƙunshi takamaiman kashi na abubuwa kamar carbon, manganese, phosphorus, sulfur da silicon.Waɗannan buƙatun suna da mahimmanci don tabbatar da cewa ƙarfen da aka yi amfani da shi a cikibututun maiya sadu da ƙarfin da ake buƙata da ma'aunin juriya na lalata.
Tsarin masana'anta na bututun ASTM A139 ya haɗa da walƙiya electrofusion (arc), wanda ke amfani da baka na lantarki don samar da zafin da ake buƙata don walda sassan ƙarfe zuwa siffa mai siliki.Ana sarrafa wannan tsari a hankali don tabbatar da cewa weld ɗin suna da inganci kuma ba su da lahani.Har ila yau, ƙa'idar ta ƙididdige hanyoyin dubawa don walda, kamar gwajin ultrasonic da gwajin lanƙwasawa mai jagora, don tabbatar da sun cika ƙa'idodin ingancin da ake buƙata.
Dangane da girma, ASTM A139 yana fayyace buƙatun don girman bututu, kaurin bango, da tsayi.Wannan ya haɗa da ƙayyadaddun haƙuri akan girma don tabbatar da cewa bututun ya cika ƙayyadaddun ƙayyadaddun da ake buƙata don amfani da shi.Waɗannan buƙatun girma suna da mahimmanci don tabbatar da cewa an shigar da bututu kuma an haɗa su daidai a cikin aikace-aikace iri-iri.
Kaddarorin injina kamar ƙarfin ɗaure, ƙarfin yawan amfanin ƙasa, da tsawo ana kuma ƙayyade su a cikin ASTM A139.Wadannan kaddarorin suna da mahimmanci wajen ƙayyade ƙarfi da aikin bututu a ƙarƙashin yanayin aiki daban-daban.Ma'auni ya tsara mafi ƙarancin buƙatu don waɗannan kaddarorin injina don tabbatar da cewa bututu zai iya jure matsi da ake tsammani, zafin jiki da yanayin muhalli.
Gabaɗaya, ASTM A139 tana taka muhimmiyar rawa a masana'antarkarfe bututudon aikace-aikace daban-daban.Ta hanyar ƙayyadaddun kayan, hanyoyin masana'antu, girma da kaddarorin inji na bututu, ma'auni yana tabbatar da cewa samfurin ƙarshe ya dace da ingancin da ake buƙata da matakan aminci.Yana ba masana'antun, injiniyoyi da masu amfani da ƙarshen kwarin gwiwa cewa bututun zai yi kamar yadda aka zata a aikace-aikacen da aka yi niyya.
A taƙaice, fahimtar mahimmancin ASTM A139 a masana'antar bututu yana da mahimmanci don tabbatar da inganci da amincin samfuran bututun ƙarfe.Ma'auni yana tsara abubuwan da ake buƙata don kayan aiki, hanyoyin masana'antu, girma da kaddarorin inji don tabbatar da cewa bututun ya dace da ingancin da ake buƙata da matakan aiki.Ta hanyar bin ASTM A139, masana'antun na iya samar da bututun ƙarfe mai inganci wanda ya dace da buƙatun masana'antu da aikace-aikace iri-iri.
Lokacin aikawa: Dec-28-2023