ASTM A53 ERWumuyoboro w'icyuma niUbwoko Emu bipimo bya A53, byakozwe hakoreshejwe uburyo bwo gusudira ubukana, kandi biboneka mu byiciro byombi by’icyiciro cya A na B.
Ikoreshwa cyane cyane mu gukoresha ikoranabuhanga n'umuvuduko w'amazi, kandi ikunze gukoreshwa nk'intego rusange mu gutwara umwuka, amazi, gazi n'umwuka.
Ibyiza by'umuyoboro w'icyuma wa ERW, nkoigiciro gitonaumusaruro mwinshi, bigire ibikoresho bikoreshwa cyane mu nganda nyinshi.
Botop Steelni uruganda rukora imiyoboro ya karuboni ikoze mu byuma bya karuboni rwo mu Bushinwa, rukaba kandi rutanga imiyoboro y'ibyuma idafite umugozi, ruguha ibisubizo bitandukanye by'imiyoboro y'ibyuma!
Ibicuruzwa byacu birimo ibintu byinshi kandi dushobora guhaza ibyifuzo byihuse by'abakiriya bacu ku bunini butandukanye n'ingano zitandukanye.
ASTM A53/A53M irimo ubwoko n'amanota bikurikira:
Ubwoko E: Ifite ubushobozi bwo gusudira amashanyarazi, Icyiciro cya A na B.
Ubwoko S: Idafite umushongi, Icyiciro cya A na B.
Ubwoko bwa F: Ifuru ivanze n'ikibuno, ivanze n'ibice bikomeza gukoreshwa. Icyiciro cya A na B.
Ubwoko EnaUbwoko Sni ubwoko bubiri bw'imiyoboro ikoreshwa cyane. Ibinyuranye n'ibyo,Ubwoko bwa Fubusanzwe ikoreshwa ku miyoboro mito y'ubugari. Bitewe n'iterambere mu ikoranabuhanga ryo gusudira, ubu buryo bwo gukora ntibukunze gukoreshwa cyane.
Diametero Nominal: DN 6 - 650 [NPS 1/8 - 26];
Ingano y'inyuma: mm 10.3 - 660 [0.405 - 26 in.];
Ubunini bw'urukuta n'imbonerahamwe y'uburemere bw'imiyoboro y'icyuma:
Imiyoboro igororotse igaragara mu mbonerahamwe ya X2.2;
Imiyoboro ifite insinga n'iy'imigozi ifatanye irashobora kugaragara mu mbonerahamwe ya X2.3.
ASTM A53 kandi yemerera gushyiramo imiyoboro hamwe n'ibindi bipimo mu gihe umuyoboro wujuje ibindi bisabwa byose muri ibi bisobanuro.
ERWikoreshwa cyane mu gukora imiyoboro y'icyuma cya karuboni n'icyuma gikozwe mu byuma bito, kare, n'urukiramende.
Uburyo bukurikira ni uburyo bwo gukoraumuyoboro w'icyuma wa ERW uzenguruka:
a) Gutegura ibikoresho: Ibikoresho bya mbere akenshi biba ari imigozi y'icyuma ishyushye. Iyi migozi ibanza gukatwa no gukatwa kugeza ku bugari bukenewe.
b) Gukora: Buhoro buhoro, binyuze mu migozi myinshi, umurongo ukorwamo imiterere y’uruziga ifunguye. Muri iki gikorwa, impande z’umurongo zigenda zegeranywa buhoro buhoro mu rwego rwo kwitegura gusudira.
c) Gusudira: Nyuma yo gukora imiterere y'umuyoboro w'icyuma, impande z'icyuma zishyushywa n'ubudahangarwa bw'amashanyarazi mu gace ko gusudira. Umuriro w'amashanyarazi unyura mu bikoresho, maze ubushyuhe buvamo ubudahangarwa bugakoreshwa mu gushyushya impande kugeza aho zishongeshereza, hanyuma zigahuzwa hamwe n'umuvuduko.
d) Gukuraho ikibazo: Nyuma yo gusudira, uduce two gusudira (icyuma gikabije giturutse ku gusudira) dukurwa imbere n'inyuma y'umuyoboro kugira ngo imbere y'umuyoboro habeho ubuso bworoshye.
e) Ingano n'uburebure bwo gushyiraho: Nyuma yo gusudira no gukuramo uduce duto, imiyoboro inyuzwa mu mashini ipima ingano kugira ngo ikoreshwe neza kugira ngo irebe ko yujuje ibisabwa by’umurambararo n’ubugari. Hanyuma imiyoboro icibwa ku burebure bwagenwe.
f) Igenzura n'isuzuma: Umuyoboro w'icyuma uzagenzurwa cyane, harimo no gupimwa hakoreshejwe ikoranabuhanga, gupimwa hidrostatike, n'ibindi, kugira ngo harebwe ko ubwiza bw'umuyoboro w'icyuma bwujuje ibisabwa n'amabwiriza.
g) Gutunganya ubuso: Amaherezo, umuyoboro w'icyuma ushobora gukorerwa ubundi buryo bwo gutunganya nko gusiga galvanizing ishyushye, gusiga irangi, cyangwa ubundi buryo bwo gutunganya ubuso kugira ngo habeho ubundi buryo bwo kurinda ingese no kuvugurura ubwiza.
Gusudira mu bwoko bwa E cyangwa ubwoko bwa F mu cyiciro cya BUmuyoboro ugomba kuvurwa mu buryo bushyushye cyangwa ugatunganywa mu bundi buryo nyuma yo gusudira kugira ngo martensite idashyushye itagira aho iboneka.
Ubushyuhe bwo kuvura ubushyuhe bugomba kuba niburaUbushyuhe bugera kuri 540°C.
Iyo umuyoboro ukonje waguwe, kwaguka ntikugomba kurenza1.5%y'umurambararo wo hanze wavuzwe w'umuyoboro.
AIbintu bitanuCu, Ni, Cr, Mo, naVhamwe ntibigomba kurenza 1.00%.
BKuri buri kugabanuka kwa 0.01% munsi y’umubare ntarengwa wa karuboni wagenwe, kwiyongera kwa 0.06% bya manganese hejuru y’umubare ntarengwa wagenwe kuzemererwa kugeza ku mubare ntarengwa wa 1.35%.
CKuri buri kugabanuka kwa 0.01% munsi y’umubare ntarengwa wa karuboni wagenwe, kwiyongera kwa 0.06% bya manganese hejuru y’umubare ntarengwa wagenwe kuzemererwa kugeza ku mubare ntarengwa wa 1.65%.
Umutungo wo gukurura
| Urutonde | Gushyira mu byiciro | Icyiciro cya A | Icyiciro cya B |
| Ingufu zo gukurura, nibura | MPa [psi] | 330 [48.000] | 415 [60.000] |
| Ingufu z'umusaruro, nibura | MPa [psi] | 205 [30.000] | 240 [35.000] |
| Uburebure bwa mm 50 [inchi 2] | Icyitonderwa | A,B | A,B |
Inyandiko A: Uburebure buke muri mm 50 bugomba kuba ubwo bugenwa n'ikigereranyo gikurikira:
e = 625.000 [1940] A0.2/U0.9
e = uburebure buke muri 2 in cyangwa 50 mm mu ijana, bugera ku ijana rya hafi
A = munsi ya 0.75 muri2[500 mm]2] n'agace k'igice cy'ingero y'igerageza ry'umuvuduko, kabazwe hakoreshejwe umurambararo w'inyuma w'umuyoboro, cyangwa ubugari bw'ingero y'igerageza ry'umuvuduko n'ubugari bw'urukuta rw'umuyoboro, hamwe n'agaciro kabazwe kazengurutswe kuri 0.01 muri2 [1 mm2].
U = imbaraga nkeya zo gukurura, psi [MPa].
Inyandiko B: Reba Imbonerahamwe X4.1 cyangwa Imbonerahamwe X4.2, uko byagenda kose, kugira ngo ubone agaciro gato k'uburebure gakenewe mu guhuza ingano zitandukanye z'ingero z'ikizamini cyo gukurura n'imbaraga nkeya zo gukurura.
Ikizamini cyo Kunama
Ku muyoboro wa DN ≤ 50 [NPS ≤ 2], uburebure buhagije bw'umuyoboro bugomba kuba bushobora kunama bukonje bunyuze kuri dogere 90 zikikije umuyoboro wa silinda, ufite umurambararo ukubye inshuro cumi n'ebyiri z'umurambararo wagenwe w'umuyoboro, nta gucikamo ibice cyangwa ngo ufungure umuyoboro.
Ingufu ebyiri cyane(icyiciro cy'uburemere:XXS) umuyoboro urenga DN 32 [NPS 1 1/4] ntugomba gukorerwa isuzuma ry’uko ugenda.
Ikizamini cyo Kugorora
Ikizamini cyo gupima kigomba gukorwa ku muyoboro wasutswe hejuru ya DN 50 mu buremere bukomeye cyane (XS) cyangwa bworoheje.
Bikwiriye imiyoboro yo mu bwoko bwa E, A na B; hamwe n'imiyoboro yo mu bwoko bwa F, B.
Imiyoboro y'icyuma idafite umushono ntabwo igomba kugeragezwa.
Igihe cy'ikizamini
Ku bunini bwose bw'imiyoboro ya B yo mu bwoko bwa S, E, na F, umuvuduko w'igerageza ugomba kugumana nibura 5segonda.
Ikizamini cya hydrostatic kigomba gukoreshwa, nta gusohoka kwacyo kunyuze mu mugozi wo gusudira cyangwa ku gice cy'umuyoboro.
Imihangayiko yo mu igeragezwa
Umuyoboro usanzwebigomba gupimwa hifashishijwe ikoranabuhanga rikoreshwa mu gupima igitutu gikenewe cyatanzwe muriImbonerahamwe X2.2,
Umuyoboro ufite insinga n'udufatanyebigomba gupimwa hifashishijwe ikoranabuhanga rikoreshwa mu gupima igitutu gikenewe cyatanzwe muriImbonerahamwe X2.3.
Ku miyoboro y'icyuma ifite DN ≤ 80 [NPS ≤ 80], umuvuduko w'ikizamini ntugomba kurenza 17.2MPa;
Ku miyoboro y'icyuma ifite DN ＞80 [NPS ＞80], igitutu cy'igerageza ntikigomba kurenza 19.3MPa;
Umuvuduko mwinshi w’igerageza ushobora gutoranywa iyo hari ibisabwa byihariye by’ubuhanga, ariko ibi bisaba ibiganiro hagati y’uruganda n’umukiriya.
Gushyira ikimenyetso
Niba umuyoboro wapimwe hifashishijwe ikoranabuhanga rya hydrostatic, ikimenyetso kigomba kugaragazaigitutu cyo gupima.
Ibisabwa bikurikira birareba umuyoboro wa Type E na Type F Grade B.
Umuyoboro udafite umugozi ufite ibindi bisabwa bitavugwaho muri iyi nyandiko.
Uburyo bwo Gupima
Imiyoboro ikorwa n'imashini zo kwagura no gufunga amazi zidashyushye: DN ≥ 50 [NPS ≥ 2],gusudiramuri buri gice cy'umuyoboro ugomba gutsinda ikizamini cy'amashanyarazi kitangiza, kandi uburyo bwo gupima bugomba kuba bukurikijeE213, E273, E309 cyangwa E570gisanzwe.
imiyoboro ya ERW ikorwa n'imashini igabanya ubushyuhe: DN ≥ 50 [NPS ≥ 2]Buri gicey'imiyoboro igomba gusuzumwa neza mu buryo bwuzuye hakoreshejwe isuzuma ry'amashanyarazi ritangiza, rigomba kuba rikurikijeE213, E309, cyangwaE570amahame ngenderwaho.
Icyitonderwa: Imashini yo kwagura umurambararo w'icyuma ishyushye ni imashini ihora irambura kandi ikanda imiyoboro y'icyuma ikoresheje imigozi ku bushyuhe bwinshi kugira ngo ihindure uburebure bwayo n'ubugari bw'inkuta.
Gushyira ikimenyetso
Niba umuyoboro wakorewe isuzuma ritangiza, ni ngombwa kugaragazaNDEku kirango.
Misa
± 10%.
Umuyoboro wa DN ≤ 100 [NPS ≤ 4], upimwe nk'itsinda.
Imiyoboro DN > 100 [NPS > 4], yapimwe mu bice bimwe.
Ingano
Ku muyoboro wa DN ≤40 [NPS≤ 1 1/2], ihinduka rya OD ntirigomba kurenza ± 0.4 mm [1/64 in.].
Ku muyoboro wa DN ≥50 [NPS>2], ihinduka rya OD ntirigomba kurenza ± 1%.
Ubunini
Ubugari bw'urukuta buke ntibugomba kuba munsi ya87.5%y'ubugari bw'urukuta rwagenwe.
yoroheje kurusha uburemere bukomeye cyane (XS):
a) umuyoboro usanzwe: metero 3.66 - 4.88 [12 - 16 ft], Ntibirenze 5% by'umubare wose.
b) uburebure bubiri butunguranye: ≥ metero 6.71 [futi 22], uburebure buke bw'impuzandengo ni metero 10.67 [futi 35].
c) Uburebure bumwe butunguranye: metero 4.88 - 6.71 [16 - 22 ft], butarenze 5% by'umubare wose w'uburebure bw'imigozi bwashyizwe hamwe bugizwe n'ibice bibiri bifatanye.
Uburemere bukomeye cyane (XS) cyangwa buremereye cyane: 3.66-6.71 m [12 - 22 ft], ntarenza 5% by'umuyoboro wose 1.83 - 3.66 m [6 - 12 ft].
Kuri ASTM, umuyoboro w'icyuma wa A53 uraboneka mu ibara ry'umukara cyangwa galvanized.
Umukara: Imiyoboro y'icyuma idatunganyijwe n'ubuso, ubusanzwe igurishwa ako kanya nyuma y'igikorwa cyo kuyikora, iyo ikoreshwa aho nta kindi kidasaba imbaraga zo kurwanya ingese.
Imiyoboro ya galvanize igomba kuba yujuje ibisabwa.
Inzira
Zinc igomba gutwikirwa imbere no hanze hakoreshejwe uburyo bwo gushyushya.
Ibikoresho fatizo
Zinc ikoreshwa mu gusiga igomba kuba ubwoko ubwo aribwo bwose bwa zinc bujyanye n'ibisabwa mu bisobanuroASTM B6.
Isura
Umuyoboro wa galvanize ugomba kuba udafite ahantu hatapfutse, utubumbe tw'umwuka, imiyoboro y'amazi, n'ibintu bivanze n'ibisigazwa by'amazi. Ibibyimba, uduce duto, utubumbe, cyangwa ingano nini ya zinc ibangamira ikoreshwa ry'ibikoresho ntibigomba kwemerwa.
Uburemere bwo gutwikira hakoreshejwe ibyuma bya galvanised
Bigomba kugenwa hakoreshejwe ikizamini cyo gukata ibitoki hakurikijwe uburyo bw'ikizamini bwa ASTM A90.
Uburemere bwo gusiga ntibugomba kuba munsi ya 0.55 kg/m² [1.8 oz/ft²].
Umuyoboro w'icyuma wa ASTM A53 ERWikoreshwa mu buryo bukoresha umuvuduko muto kugeza kuri hagati nko mu buhanga mu by’umujyi, mu bwubatsi, no mu miyoboro y’imashini. Ikoreshwa risanzwe ririmo gutwara amazi, umwuka, umwuka n’ibindi bintu bikoresha umuvuduko muto.
Kubera ko zishobora gusudira neza, zikwiriye gukora ibikorwa birimo gupfunyika, gupfunyika no gupfunyika.
