AS 1579 umuyoboro w'icyumani butt weld arc gusudira ibyuma byifashishwa cyane cyane mu gutwara amazi n’amazi y’amazi afite diameter yo hanze ya mm 114 mm no kubirundo byumuyoboro ufite umuvuduko ukabije utarenze MPa 6.8.
Ibirundo by'imiyoboro ni ibice bizenguruka byubatswe mu butaka kandi ntibikoreshwa mu kugenzura umuvuduko w'imbere.
Ntarengwa ya diameter yo hanze ni 114mm, nubwo nta mbogamizi ihari ku bunini bw'umuyoboro ariko ubunini bwatanzwe buratangwa.
Bizakorwa uhereye ku byiciro byasesenguwe cyangwa byubatswe byibyuma bishyushye bihuye na AS / NZS 1594 cyangwa AS / NZS 3678.
Ukurikije imikoreshereze yanyuma iracyashyizwe mubyiciro bikurikira:
Imiyoboro ya Hydrostatike yapimweigomba gukorwa uhereye ku isesengura cyangwa urwego rwimiterere yicyuma gishyushye cyubahiriza AS / NZS 1594 cyangwa AS / NZS 3678.
Ibirundo hamwe numuyoboro udafite hydrostatikeigomba gukorwa kuva murwego rwimiterere yicyuma yubahiriza AS / NZS 1594 cyangwa AS / NZS 3678.
Ubundi,ibirundoirashobora gukorwa kuva murwego rwo gusesengura rwujuje AS / NZS 1594., icyo gihe ibyuma bizageragezwa muburyo bwa AS 1391 kugirango byerekane ko byujuje ibyangombwa bisabwa nabaguzi.
AS 1579 umuyoboro wibyuma ukorwa ukoreshejearc welding.
Abasudira bose bagomba kwinjizwa byuzuye butt weld.
Gusudira kwa Arc bifashisha ubushyuhe bwumuriro wamashanyarazi kugirango ushongeshe ibikoresho byibyuma kandi bigire urufatiro rusudira hagati yicyuma kugirango habeho imiyoboro ihoraho yicyuma.
Uburyo bukoreshwa cyane bwo gusudira arc gusudira ni SAW (Submerged Arc Welding), izwi kandi nkaDSAW, zishobora gushyirwa mubiceLSAW(SAWL) na SSAW (HSAW) ukurikije icyerekezo cya butt weld.
Usibye SAW, hari ubundi bwoko bwo gusudira arc nka GMAW, GTAW, FCAW, na SMAW.Uburyo butandukanye bwo gusudira arc bufite imiterere yabyo hamwe nuburyo bukoreshwa, kandi guhitamo uburyo bukwiye bwo gusudira biterwa nibisobanuro byumuyoboro wibyuma ugomba gukorwa, ingengo yimari, nibisabwa ubuziranenge.
Ibipimo ubwabyo ntibisobanura mu buryo butaziguye ibihimbano by’imiti n’imiterere y’ubukanishi, kubera ko akenshi biterwa n’ibipimo by’ibyuma nka AS / NZS 1594 cyangwa AS / NZS 3678, bisobanura ibintu bikenerwa n’imiti n’ubukanishi by’ibyuma bikoreshwa mu gukora ibi tubes.
AS 1579 yerekana gusa karubone ihwanye.
Carbone ihwanye (CE) yicyuma ntishobora kurenga 0.40.
CE = Mn / 6 + (Cr + Mo + V) / 5 + (Ni + Cu) / 15
CE nikintu cyingenzi gikoreshwa mugusuzuma gusudira kwicyuma.Ifasha guhanura gukomera bishobora kugaragara mubyuma nyuma yo gusudira bityo bigasuzuma gusudira kwayo.
Ikizamini cya hydrostatike kirakenewe kuri buri mazi cyangwa umuyoboro wamazi wamazi akoreshwa mu gutwara.
Ibirundo by'imiyoboro mubisanzwe ntibisabwa gupimwa hydrostatike kuko bikoreshwa cyane cyane gutwara imitwaro yubatswe aho kuba igitutu cyimbere.
Amahame yubushakashatsi
Umuyoboro ufunzwe kuri buri mpera kandi ushizwemo ingufu na hydrostatike.
Irasuzumwa imbaraga kumuvuduko ugereranya igishushanyo mbonera cyumuyoboro.Irageragezwa kumeneka kumeneka kumuvuduko wagenwe wumuyoboro.
Imikazo Yubushakashatsi
Umuvuduko ntarengwa wapimwe wumuyoboro wibyuma ni 6.8 MPa.Iyi ntarengwa igenwa nigikoresho cyo gupima umuvuduko wa 8.5 MPa.
Pr= 0,72 × (2 × SMYS × t) / OD cyangwa P.r= 0,72 × (2 × NMYS × t) / OD
Pr: Umuvuduko ukabije, muri MPa;
SMYS: Kugaragaza imbaraga ntoya yumusaruro, muri MPa;
NMYS: Nominal byibuze umusaruro wimbaraga, muri MPa;
t: Uburebure bw'urukuta, muri mm;
OD: Hanze ya diameter, muri mm.
Mu bihe byihutirwa, imikazo yinzibacyuho irashobora gutuma kwiyongera k'umuvuduko ukabije.Muri ibi bihe, impagarike ntarengwa yemerewe guhuzwa igomba kugenwa nuwabishizeho, ariko ntishobora kurenga 0.90 x SMYS.
Pt= 1.25Pr
Nyuma yikizamini cyimbaraga, ntihazabaho guturika cyangwa gutemba mumiyoboro yikizamini.
90% byimbaraga zitanga umusaruro ntarengwa (SMYS) cyangwa imbaraga ntoya yumusaruro (NMYS) cyangwa 8.5 MPa, iyaba ari mike.
Pl= P.r
Ikizamini cyo kumeneka kizakorerwa kumuyoboro.
Mugihe cyo gupimisha kumeneka, ntihazabaho kumeneka kugaragara hejuru yumuyoboro.
Imiyoboro yose itari hydrostatike igomba kuba ifite urukuta rwuburebure bwa mm 8.0.
Umuyoboroigomba kuba ifite 100% yo gusudira idasenyutse ikoresheje uburyo bwa ultrasonic cyangwa radiografiya ikurikije AS 1554.1 Icyiciro SP kandi ijyanye nibisabwa byemewe.
Ikizamini kidasenya ibice byo gusudira igiceibirundo.Ibisubizo by'ibizamini bigomba kubahiriza AS / NZS 1554.1 Icyiciro cya SP gisabwa.Iyo ubugenzuzi bugaragaje kutubahiriza ikirango, gusudira byose kuri kiriya kirundo bigomba kugenzurwa.
Imiyoboro hamwe n’ibikoresho bikoreshwa mu kugeza amazi n’umwanda bigomba kurindwa kwangirika hatoranijwe igifuniko gikwiye Igipfundikizo kizakoreshwa hakurikijwe AS 1281 na AS 4321.
Ku bijyanye n’amazi meza, bagomba kubahiriza AS / NZS 4020. Ikigamijwe ni ukureba niba ibyo bicuruzwa, iyo bihuye na sisitemu yo gutanga amazi, bitagira ingaruka mbi ku bwiza bw’amazi, nko kwanduza imiti, mikorobe kwanduza, cyangwa guhindura uburyohe nuburyo bugaragara bwamazi.
Ubuso bwinyuma bwigituba, butarenze mm 150 uhereye kumpera, bugomba gushyirwaho neza kandi burundu hamwe namakuru akurikira:
a) Inomero yihariye idasanzwe, ni ukuvuga nimero ya tube;
b) Ahantu ho gukorerwa;
c) Hanze ya diameter n'ubugari bw'urukuta;
d) Umubare usanzwe, ni ukuvuga AS 1579;
e) Izina ry'umukoresha cyangwa ikirango;
f) Igipimo cya Hydrostatike yikigereranyo cyumuvuduko (gusa kumiyoboro yicyuma ikorerwa hydrostatike);
g) Ikimenyetso cyo kudasenya (NDT) (gusa kumuyoboro wibyuma byakorewe ibizamini bidasenya).
Uruganda rugomba guha Muguzi icyemezo cyashyizweho umukono kivuga ko umuyoboro wakozwe ukurikije ibisabwa nuwaguze niki gipimo.
ASTM A252: Yashizweho kubirundo byibyuma kandi ikubiyemo ibintu birambuye byubukanishi hamwe nibigize imiti yibyiciro bitatu.
EN 10219: ijyanye nubukonje-bwubatswe bwubatswe bwububiko bwibyuma byububiko bukubiyemo harimo ibirundo.
ISO 3183: Umuyoboro wibyuma byinganda za peteroli na gaze, hamwe nubwiza nimbaraga zisabwa bigatuma nayo ikwiranye no gutwara ibirundo.
CSA Z245.1: Kugaragaza imiyoboro yicyuma nibikoresho byo gutwara peteroli na gaze, nabyo bikwiranye nibirundo.
ASTM A690: Yashizweho kubirundo byibyuma bikoreshwa mumazi hamwe nibidukikije bisa, byibanda kubirwanya ruswa.
JIS A 5525: Ikiyapani gisanzwe gitwikiriye umuyoboro wibyuma, harimo ibikoresho, ibihimbano, ibipimo nibisabwa.
GOST 10704-91.
GOST 20295-85.
Kuva yashingwa mu 2014, Botop Steel yabaye iyambere mu gutanga imiyoboro ya karubone mu majyaruguru y’Ubushinwa, izwiho serivisi nziza, ibicuruzwa byiza, ndetse n’ibisubizo byuzuye.
Isosiyete itanga imiyoboro inyuranye y’ibyuma bya karubone n’ibicuruzwa bifitanye isano na byo, birimo icyuma, ERW, LSAW, hamwe n’icyuma cya SSAW, ndetse n’umurongo wuzuye w’ibikoresho bya flanges na flanges.
Ibicuruzwa byayo bidasanzwe birimo kandi amavuta yo mu rwego rwo hejuru hamwe na austenitis ibyuma bitagira umuyonga, bigenewe guhuza ibyifuzo byimishinga itandukanye.
