Mu murima w'inganda, ibipimo n'ibisobanuro bitandukanye bigomba gukurikizwa kugirango ireme n'umutekano wibicuruzwa byanyuma.ASTM A139Ese kimwe gipimo nkiki kigira uruhare runini mugukora imiyoboro y'ibyuma kuri porogaramu zitandukanye.
ASTM A139 nigipimo gisanzwe kuri electrofusion (arc) gusudira ibyuma (NPS 4 no hejuru). Irimo ibisabwa kuri Spiral Seam ElectroFusion (ARC) irasuye, urukuta ruto, umuyoboro wa austeel wo kubyuma byangiza ibikorikori cyangwa ubushyuhe bwinshi. Iki gipimo cyerekana ibisabwa kubikoresho, inzira zikoreshwa, ibipimo na mico yimiyoboro yibyuma.
Ibisabwa nibikoresho bya ASTM A139 byerekana ubwoko nicyiciro cyicyuma gishobora gukoreshwa mugukora imiyoboro. Ibi birimo imiti yicyuma, igomba kuba irimo ijanisha ryihariye ryibintu nka karubone, Manganese, fosifore, sulfuri na silicon. Ibi bisabwa ni ngombwa kugirango ubyemeza ko ibyuma byakoreshejweimiyoboroyujuje imbaraga nuburinganire.
Igikorwa cyo gukora kuri ASTM A139 Umuyoboro wa electrofusion (ARC) gusudira, ukoresha amashanyarazi arc kugirango ubushyuhe bukenewe kugirango asukure ibyuma mumiterere ya silindrike. Iyi nzira igenzurwa neza kugirango ikemure ko urugamba rufite ubuziranenge kandi nta nenge. Ibipimo byerekana kandi uburyo bwo kugenzura urububasha, nko kwipimisha ultrasonic kandi muburyo butandukanye bwo kwipimisha, kugirango bakemure ibipimo ngenderwaho.
Ku bijyanye n'ibipimo, ASTM A139 isengera ibisabwa ku bunini bw'imiyoboro, ubunini bw'urukuta, n'uburebure. Ibi birimo kwihanganira kwitonda kugirango umenye neza ko umuyoboro wujuje ibisobanuro bikenewe kugirango ukoreshe. Ibi bisabwa byintege nke ni ngombwa kugirango ubone ko imiyoboro ishyirwaho kandi ihujwe neza muburyo butandukanye.
Imitungo ya mashini nkimbaraga za kanseri, imbaraga, no kurambura nabyo byasobanuwe muri ASTM A139. Iyi mitungo ni ngombwa muguhitamo imbaraga n'imikorere yumuyoboro mubihe bitandukanye imikorere. Ibipimo ngenderwaho byibuze kuriyi miterere ya mashini kugirango umenye neza ko umuyoboro ushobora guhangana nigitutu cyateganijwe, ubushyuhe nibidukikije.
Muri rusange, ASTM A139 ifite uruhare runini mugukoraimiyoboro y'ibyumakuri porogaramu zitandukanye. Mugusobanura ibikoresho, inzira zikoreshwa, ibipimo na mico yimiyoboro, ibipimo byemeza ko ibicuruzwa byanyuma bihuye nibipimo bikenewe kandi byumutekano. Itanga abakora, injeniyeri n'abakoresha iherezo icyizere ko umuyoboro uzakora nkuko biteganijwe nkuko byateganijwe.
Muri make, gusobanukirwa n'akamaro ka ASTM A139 mu nganda za PIPe ni ngombwa kugira ngo ireme n'umutekano w'ibicuruzwa by'ibyuma. Ibipimo byerekana ibisabwa bikenewe kubikoresho, inzira zikoreshwa, ibipimo na mico ya mashini kugirango bigenye ko imiyoboro yujuje ubuziranenge nubuziranenge bukenewe. Mugukurikiza ASTM A139, abakora barashobora gutanga umuyoboro mwiza wicyuma wujuje ibikenewe mu nganda nuburyo butandukanye.
Igihe cyohereza: Ukuboza-28-2023