ASTM A334Icyiciro cya 6ni umuyoboro w'icyuma cya karuboni ukomeye cyane, ukoresha ubushyuhe buke ufite igipimo ntarengwa cya karuboni kingana na 0.30%, igipimo cya manganese kingana na 0.29-1.06%, imbaraga nkeya zo gukurura za 415Mpa (60ksi), n'imbaraga zo gutanga umusaruro za 240Mp (35ksi).
Ikoreshwa cyane cyane mu bijyanye na gaze karemano ikoreshwa mu mazi, mu buhanga bwo gushyushya ikirere, no mu ikoranabuhanga ryo gukonjesha, ikoreshwa mu bidukikije bifite ubushyuhe buke cyane.
ASTM A334ni ibipimo ngenderwaho by’imiyoboro ya karuboni n’icyuma gikozwe mu cyuma gikozwe mu buryo budafite umugozi kandi buvanze neza kugira ngo gikoreshwe mu buryo butuma ibintu bitagira umugozi.
Hari amanota menshi yo guhaza ibyo ukeneye bitandukanye.
Icyiciro cya 1, Icyiciro cya 3, Icyiciro cya 6, Icyiciro cya 7, Icyiciro cya 8, Icyiciro cya 9, n'Icyiciro cya 11.
Icyiciro cya 1naho Icyiciro cya 6 byombi ni imiyoboro y'icyuma cya karuboni.
Umuyoboro w'icyuma wa ASTM A334 Grade 6 ushobora gukorwa hakoreshejwe uburyo budafite umugozi cyangwa busutswe.
Uburyo bwo gusudira burimo uburyo butandukanye nkogusudira hakoreshejwe amashanyarazi (ERW)nagusudira arc munsi y'amazi (SAW).
Hasi, ni inzira yo gukoraUbushuhe bwo gusudira mu cyuma gikozwe mu buryo bwa Longitudinal (LSAW).
Nk’uruganda rukora imiyoboro y’ibyuma ishongeshejwe, dushobora guhaza ibyifuzo byihariye by’abakiriya bacu batandukanye, dutanga ubwoko butandukanye bw’ibicuruzwa kugira ngo dukore neza kandi twiza kuri buri porogaramu.
Ubushuhe bw'igice kimwe cya LSAW butuma umuyoboro w'amazi ukomera cyane, bigatuma ubasha kwihanganira igitutu cyinshi.
Byongeye kandi, ikwiriye cyane mu gukora imiyoboro minini y'icyuma ifite umurambararo n'inkuta nini ihuye n'ibikenewe na ASTM A334 Grade 6 mu nganda nini n'ingufu, nko mu kubaka inyubako nini za gaze karemano (LNG).
Muri icyo gihe, kugenzura neza ingano bitanga umurambararo uhoraho w'imiyoboro n'ubugari bw'inkuta kugira ngo birusheho kuba byiza mu guhuza no gukumira amazi mu miyoboro.
Shyira ubushyuhe bungana na dogere selisiyusi 845 hanyuma ukonjeshe mu kirere cyangwa mu cyumba gikonjesha cy'itanura rigenzurwa n'ikirere.
Niba bikenewe ko habaho gupima, bizakenera kuganirwaho.
Imiterere y'imiti y'umuyoboro w'icyuma wa ASTM A334 Grade 6 yagenewe kwemeza imiterere myiza ya mekanike ku bushyuhe buke kandi ikagira imbaraga zihagije kugira ngo ikoreshwe neza mu bihe bikomeye.
| Icyiciro | C (Karuboni) | Mn (Manganese) | P (Fosifore) | S (Sulfure) | Si (Silicone) |
| Icyiciro cya 6 | ntarengwa 0.30 | 0.29-1.06 | ntarengwa 0.025 | ntarengwa 0.025 | umunota 0.10 |
| Kuri buri kugabanuka kwa 0.01% ya karuboni munsi ya 0.30%, kwiyongera kwa 0.05% ya manganese hejuru ya 1.06% byemerewe kugera kuri 1.35% ya manganese. | |||||
Ku byuma byo mu rwego rwa 1 cyangwa 6, ntibyemewe gutanga ingero zo guhuza ibintu bitari ibyo bisabwa byemewe. Ariko, byemerewe kongeramo ibintu bikenewe kugira ngo icyuma gifunguke.
Igerageza ry’ingaruka ku muyoboro w’icyuma wo mu cyiciro cya 6 rikorwa kuri -45°C [-50°F] mu rwego rwo kugenzura ubukomere n’ubudahangarwa bw’ibikoresho mu duce dushyuha cyane.
Ikizamini cyakozwe hatoranywa ingufu zikwiye z’ingaruka hashingiwe ku bugari bw’urukuta rw’umuyoboro w’icyuma.
Ingano ntoya z'uburebure zibazwe kuri buri 1/32 santimetero [0.80 mm] mu kugabanuka k'ubugari bw'urukuta.
| Icyiciro | Rockwell | Brinell |
| ASTM A334 Icyiciro cya 6 | B 90 | 190 |
Buri muyoboro ugomba gupimwa mu buryo budasenya amashanyarazi cyangwa hifashishijwe amazi hakurikijwe Ibisobanuro A1016/A1016M.
Keretse iyo byavuzwe ukundi mu itegeko ryo kugura, ubwoko bw'ikizamini kizakoreshwa ni ubwakozwe n'uwagikoze.
Ikizamini cyo Kugorora
Ikizamini cy'Umucyo (Imiyoboro Idafite Umushono)
Ikizamini cya Flange (Imiyoboro Isutswe)
Ikizamini cyo Gusubira inyuma cyo Kugorora
1. Ibikoresho bya Gazi Kamere Zishongeshejwe (LNG): Bitewe n’imiterere yayo myiza y’ubushyuhe buri hasi, imiyoboro y’icyuma yo mu cyiciro cya 6 ikoreshwa cyane mu gutunganya, kubika no gutwara LNG. Iyi miyoboro ikenera ibikoresho bigumana imbaraga nyinshi kandi bikomeye mu bushyuhe buri hasi cyane.
2. Sisitemu zo gutwara peteroli na gaze: ikoreshwa mu gutwara hydrocarbons zirimo amazi cyangwa imyuka, nka gaze ya peteroli (LPG) n'andi mazi afite ubushyuhe buke mu kirere gifite ubushyuhe buke.
3. Ikoranabuhanga ryo kubika firigo n'ibikoresho bikonjeshaIbi binareba izindi nzego z'ikoranabuhanga ryo gukonjesha, nko gukonjesha no kubika ibintu bikonjesha mu gutunganya ibiribwa n'izindi nzira za shimi zisaba gukoreshwa mu bushyuhe buke.
4. Ubwubatsi bw'izuba: Mu mishinga y’ubuhanga mu turere tw’izuba, nko mu bigo by’ubushakashatsi bwa siyansi muri Arctique cyangwa Antartica, ikoreshwa mu kubaka sisitemu zo gutwara ibintu zihamye kandi zizewe n’inyubako zigomba kuba zishobora kwihanganira ubukonje bukabije n’ibidukikije bikomeye.
5. Sisitemu zo gukonjesha n'ibikoresho byo guhererekanya ubushyuhe: Ikoreshwa kandi mu buryo bunini bwo gukonjesha no mu byuma bihindura ubushyuhe, bigomba gukora neza ku bushyuhe buke kugira ngo bigenzure neza kandi bigire umutekano.
6. Ubwubatsi bw'amashanyarazi n'ibigo by'amashanyarazi: Mu mishinga yihariye y’ubuhanga mu by’amashanyarazi, nk’ubwoko bumwe na bumwe bw’amashanyarazi, imiyoboro y’icyuma yo mu cyiciro cya 6 ishobora gukoreshwa mu gucunga amazi cyangwa imyuka ku bushyuhe buke kugira ngo sisitemu ikore neza kandi mu mutekano.
EN 10216-4:P265NL: Ikoreshwa cyane cyane mu miyoboro y'umwuka ushyushye n'imiyoboro y'amazi ashyushye, ifite imbaraga n'ubukomezi bwiza kandi ikwiriye gukoreshwa mu duce tw'amazi ashyushye.
DIN 17173:TTSt41N: Yagenewe gukoreshwa mu bushyuhe buke, itanga imikorere myiza mu bushyuhe buke kandi ikunze gukoreshwa mu bikoresho no mu miyoboro bisaba ahantu hakorerwa ubushyuhe buke cyane.
JIS G3460:STPL46: Ikoreshwa mu gutwara imiyoboro y'amazi mu bushyuhe buke, ishobora kwihanganira ingaruka zimwe na zimwe n'umuvuduko mu bushyuhe buke.
GB/T 18984:09Mn2V: Iki gikoresho cyihariye mu gukora imiyoboro y'icyuma idakora neza ikoreshwa mu bushyuhe buke, ifite imbaraga nke kandi irwanya imiyoboro.
Mu guhitamo ibi bikoresho bingana, ni ngombwa kugenzura ko imiterere yabyo ya shimi n'imiterere ya mekanike byujuje ibisabwa mu ikoreshwa n'ibisabwa mu mikorere.
Ibi bipimo bigomba kugereranywa mu buryo burambuye kandi hashobora gusabwa izindi nzira zo gupima no kwemeza kugira ngo harebwe niba ibikoresho bikwiranye kandi bikora neza.
Kuva yashingwa mu 2014, Botop Steel yabaye ikigo gikomeye mu gutanga serivisiumuyoboro w'icyuma cya karubonimu Majyaruguru y'Ubushinwa, izwiho gutanga serivisi nziza, ibicuruzwa byiza, n'ibisubizo byuzuye. Iyi sosiyete itanga imiyoboro itandukanye y'icyuma cya karuboni n'ibindi bifitanye isano, harimo imiyoboro y'icyuma idafite umugozi, ERW, LSAW, na SSAW, ndetse n'urutonde rwuzuye rw'imiyoboro n'ibice by'imiyoboro.
Ibikoresho byayo byihariye birimo kandi aloi nziza n'ibyuma bitagira umugese bya austenitic, byakozwe kugira ngo bihuze n'ibyo imishinga itandukanye y'imiyoboro isaba.
