ASTM A335 P5, izwi kandi nka ASME SA335 P5, ni umuyoboro w'icyuma udakora cyane wagenewe serivisi zishyushye cyane.
P5 irimo chromium ya 4.00 ~ 6.00% na molybdenum ya 0.45 ~ 0.65%, itanga imbaraga n'imikorere myiza mu gihe cy'ubushyuhe n'umuvuduko mwinshi. Ikoreshwa cyane mu bikoresho nka boilers, superheaters, na heatsinks.
Icyitonderwa cyayo cya UNS ni K41545.
Uruganda n'imiterere yarwo
Imiyoboro y'icyuma ya ASTM A335 P5 igomba gukorwa hakoreshejwe uburyo budafite umugozi kandi igomba kuba ishyushye cyangwa ikonje, nk'uko byavuzwe.
Imiyoboro ishyushye ni imiyoboro y'icyuma idakora ikozwe mu billets binyuze mu buryo bwo gushyushya no gukurura, mu gihe imiyoboro ikonje ari imiyoboro y'icyuma idakora ikozwe mu gukurura imiyoboro ishyushye ikozwe mu bushyuhe bw'icyumba.
Niba wifuza kumenya byinshi ku bijyanye n'imikorere y'ubu bwoko bubiri bw'imiyoboro y'icyuma idakora, ushobora gukanda"Umuyoboro w'icyuma kidapfutse ni iki?"kugira ngo ubone ibisobanuro birambuye.
Uburyo bwo kuvura ubushyuhe
Imiyoboro ya ASTM A335 P5 igomba kongera gushyuha kugira ngo ivurwe ubushyuhe kandi ivurwe ubushyuhe nagufunga byuzuye cyangwa bidafite ubushyuhe bwinshi or kuvugurura no gukabya.
Ibisabwa byihariye bigaragazwa mu mbonerahamwe iri hepfo:
| Icyiciro | Ubwoko bw'ubushyuhe | Kugabanya cyangwa Ubushyuhe mu buryo buciriritse |
| ASTM A335 P5 | anneal yuzuye cyangwa isothermal | — |
| kuvugurura no gukabya | 1250 ℉ [675 ℃] umunota |
Ibikorwa bisaba gushyushya imiyoboro y'icyuma irenze ubushyuhe bwayo bukomeye, nko gusudira, gufunga no gushyushya, bigomba gukurikirwa no gutunganya ubushyuhe bukwiye.
Uburyo bwo gupima imiterere y’imiti n’imiterere ya mekanike y’imiyoboro y’icyuma ya P5 bugomba kubahiriza ingingo zisabwa za ASTM A999.
| Icyiciro | Imiterere, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | 0.15 ntarengwa | 0.30 ~ 0.60 | Ibipimo ntarengwa bya 0.025 | Ibipimo ntarengwa bya 0.025 | 0.50 ntarengwa | 4.00 ~ 6.00 | 0.45 ~ 0.65 |
Imiterere yo Gufata
| Icyiciro | Imbaraga zo Gufata | Imbaraga z'umusaruro | Kurekura muri mm 2 cyangwa 50 |
| P5 | iminota 60 ksi [415 MPa] | 30 ksi [205 MPa] umunota | Iminota 30% |
Imiterere y'Ubukomere
Amabwiriza ya ASTM A335 ntagaragaza ibisabwa ku bukomere bw'imiyoboro y'icyuma ya P5.
Ikizamini cyo Kugorora
Ikizamini cyo gupima no gupima ibipimo kigomba gukorwa hakurikijwe ibisabwa na ASTM A999, kandi impera z'imiyoboro yaciwe zishobora gukoreshwa nk'ingero.
Ikizamini cyo Kunama
Ku muyoboro ufite umurambararo urenze NPS 25 kandi ufite umurambararo ugereranyije n'ubugari bw'urukuta ari 7.0 cyangwa munsi yawo, ugomba gukorerwa isuzuma ry'uko ugonga aho gukora isuzuma ryo gufunga.
Ingero z'ibizamini byo kugonda zigomba kugonda ku bushyuhe bw'icyumba kugeza kuri dogere 180 nta gucika inyuma y'igice cyagonda. Imbere y'umurambararo w'igonda igomba kuba mm 25.
Isura
Ubuso bw'umuyoboro w'icyuma bugomba kuba bworoshye kandi buringaniye, butagira ibisebe, imigozi, imikufi, gucika, cyangwa uduce duto.
Iyo ubujyakuzimu bw'inenge iyo ari yo yose burenga 12.5% by'ubugari bw'urukuta cyangwa niba ubugari bw'urukuta rusigaye buri munsi y'ubugari buke bwagenwe, ubuso bugomba gufatwa nk'ubufite inenge.
Iyo ubugari bw'urukuta rusigaye bukiri mu mbibi zagenwe, inenge ishobora gukurwaho hakoreshejwe gusya.
Iyo ubugari bw'urukuta rusigaye buri munsi y'ibisabwa, ikibazo kigomba gusanwa hakoreshejwe gusudira cyangwa gukurwaho hakoreshejwe gukata.
Kwihanganira umurambararo
Ku miyoboro yatumijwe na NPS [DN] cyangwa umurambararo wo hanze, ihinduka ry'umurambararo wo hanze ntirigomba kurenza ibisabwa bigaragara mu mbonerahamwe ikurikira:
| Umushushanyi wa NPS [DN] | Impinduka zemewe | |
| muri. | mm | |
| 1/8 kugeza 1 1/2 [6 kugeza 40], santimetero. | ± 1/64 [0.015] | ± 0.40 |
| Hejuru ya santimetero 1 1/2 kugeza kuri 4 [40 kugeza 100]. | ± 1/32 [0.031] | ± 0.79 |
| Santimetero 4 kugeza kuri 8 [100 kugeza kuri 200], santimetero. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Santimetero 8 kugeza kuri 12 [200 kugeza kuri 300]. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Abarenga 12 [300] | ± 1% by'umurambararo wo hanze wavuzwe | |
Ku muyoboro wategetswe kugera ku murambararo w'imbere, umurambararo w'imbere ntugomba gutandukana kurenza 1% ugereranije n'umurambararo w'imbere wagenwe.
Ubwinshi bw'urukuta bushobora kwihanganira
Uretse ingano y’ubugari bw’urukuta rw’umuyoboro ishyirwaho n’ingano y’uburemere muri ASTM A999, ubugari bw’urukuta rw’umuyoboro aho ari ho hose bugomba kuba buri mu ngano zivugwa mu mbonerahamwe ikurikira:
| Umushushanyi wa NPS [DN] | Kwihanganira, % by'ifishi byagaragajwe |
| 1/8 kugeza 2 1/2 [6 kugeza 65] harimo ibipimo byose bya t/D | -12.5 - +20.0 |
| Hejuru ya 2 1/2 [65], t/D ≤ 5% | -12.5 - +22.5 |
| Hejuru ya 2 1/2, t/D ＞ 5% | -12.5 - +15.0 |
| t = Ubunini bw'urukuta rwagenwe; D = Umurambararo wo hanze wagenwe. | |
Imiyoboro y'icyuma ya ASTM A335 P5 ikoreshwa cyane cyane mu miyoboro ikora mu gihe cy'ubushyuhe bwinshi n'umuvuduko mwinshi.
Bitewe n’uko zirwanya ubushyuhe bwinshi n’imiterere yazo ya mekanike, zikoreshwa cyane mu nganda zikora peteroli, ingufu z’amashanyarazi n’inganda zitunganya ibikomoka ku mavuta.
Porogaramu zihariye zirimo:
- Imiyoboro ya boiler
- Ibikoresho byo guhinduranya ubushyuhe
- Imirongo y'imikorere ya peterolikemike
- Imiyoboro y'amashanyarazi
- Udusanduku tw'umuvuduko w'amashanyarazi
| ASME | ASTM | EN | JIS |
| ASME SA335 P5 | ASTM A213 T5 | EN 10216-2 X11CrMo5+I | JIS G 3458 STPA25 |
Ibikoresho:imiyoboro n'ibikoresho by'icyuma bya ASTM A335 P5 bidafite umugozi;
Ingano:1/8" kugeza kuri 24", cyangwa byahinduwe hakurikijwe ibyo ukeneye;
Uburebure:Uburebure butunguranye cyangwa gukata hakurikijwe amabwiriza;
Gupfunyika:Igitambaro cy'umukara, impera zikozwe mu migozi, ibikingira impera z'imiyoboro, amasanduku y'ibiti, n'ibindi.
Inkunga:Icyemezo cya IBR, igenzura rya TPI, MTC, gukata, gutunganya, no guhindura ibintu;
MOQ:metero 1;
Amategeko yo kwishyura:T/T cyangwa L/C;
Igiciro:Twandikire kugira ngo ubone ibiciro biheruka by'imiyoboro y'icyuma ya T11.
