Muri ASTM A213, uretse ibisabwa ku miterere yo gukurura no gukomera, ibizamini bikurikira nabyo birakenewe: Ikizamini cyo Kugorora no Gupima Koga.
ASTM A335 P22(ASME SA335 P22) ni umuyoboro w'icyuma ukozwe muri chromium-molybdenum alloy ufite ubushyuhe bwinshi, ukoreshwa cyane muriboilers, ibishyushya cyane, n'ubushyuheabavunja.
Irimo 1.90%kuri 2.60% ya chromium na 0.87% kugeza 1.13% ya molybdenum, ifite ubushobozi bwo kwihanganira ubushyuhe, kandi ikwiriye no gupfunyika, gukurura, cyangwa gukora ibintu nk'ibyo.
Nimero ya UNS: K21590.
ASTM A335 ni yo miterere isanzwe y'imiyoboro ya ferritic alloy-steel idafite umugozi igenewe serivisi y'ubushyuhe bwinshi. Ikoreshwa cyane mu byuma bishyushya, ibishyushya cyane, ibishyushya ubushyuhe, n'izindi porogaramu zikora mu gihe cy'ubushyuhe bwinshi n'umuvuduko mwinshi. Uretse Grade P22, izindi grade zisanzwe z'ibirungo zirimoP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), naP91 (UNS P90901).
Uruganda n'imiterere yarwo
Imiyoboro y'icyuma ya ASTM A335 P22 igomba gukorwa hakoreshejwe uburyo butagira umugozi kandi igomba kurangizwa ishyushye cyangwa ikonje hamwe n'uburyo bwo kurangiza.
Imiyoboro y'icyuma idafite umushononi imiyoboro idafite imiyoboro yo gusudira, ituma imiyoboro y'icyuma ya P22 irushaho kuba myiza kandi yizewe mu bidukikije birimo ubushyuhe bwinshi n'umuvuduko mwinshi.
Uburyo bwo kuvura ubushyuhe
Imiyoboro y'icyuma ya P22 igomba kongera gushyuha no gutunganywa hakoreshejwe uburyo bwa "full annealing", "isothermal annealing", cyangwa "normalizing" na "temperature".
| Icyiciro | Ubwoko bw'ubushyuhe | Kugabanya cyangwa Ubushyuhe mu buryo buciriritse |
| ASTM A335 P22 | anneal yuzuye cyangwa isothermal | — |
| kuvugurura no gukabya | 1250 ℉ [675 ℃] umunota |
Chromium (Cr) na molybdenum (Mo) ni ibintu by'ingenzi bivangavanga mu cyuma cya P22, bikongera imbaraga mu bushyuhe bwinshi, kurwanya oxidation, no kuramba. Imiterere yihariye y'imiti igaragara hano hepfo:
| Icyiciro | Imiterere, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | Ibipimo ntarengwa bya 0.025 | Ibipimo ntarengwa bya 0.025 | 0.50 ntarengwa | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Igeragezwa ry’imiterere y’imashini rya P22 rigomba gukorwa hakurikijwe ibisabwa na ASTM A999.
Imiterere yo Gufata
| Icyiciro | ASTM A335 P22 | |
| Ingufu zo gukurura, nibura | 60 ksi [415 MPa] | |
| Ingufu z'umusaruro, nibura | 30 ksi [205 MPa] | |
| Uburebure bwa santimetero 2 cyangwa 50 (cyangwa 4D), ubugari | Indashyikirwa | Impinduka |
| Uburebure bw'ibanze bw'urukuta rufite ubugari bwa mm 8 no hejuru yarwo, ibizamini byo gupima, no ku bunini bwose buto bwageragejwe mu gice cyose. | 30% | 20% |
| Iyo hakoreshejwe icyitegererezo gisanzwe gifite uburebure bwa mm 2 cyangwa 50 cyangwa ingano ntoya ingana na 4D (inshuro 4 z'umurambararo) | 22% | 14% |
| Ku bipimo bya strip, hagomba gukurwaho 1/32 muri [0.8 mm] y'ubugari bw'urukuta ruri munsi ya 1/32 in. [8 mm] ku burebure bw'ibanze bw'ingingo zikurikira z'ijanisha. | 1.50% | 1.00% |
Imiterere y'Ubukomere
Amabwiriza ya ASTM A335 ntagaragaza ibisabwa byihariye ku bukomere bw'imiyoboro y'icyuma ya P22.
Ibindi Bikoresho by'Ikizamini
Kwihanganira umurambararo
Ku muyoboro watumijwe 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.
Kwihanganira ubunini bw'urukuta
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] | Ukwihanganirana |
| 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% |
| ASME | ASTM | EN | DIN | JIS |
| ASME SA335 P22 | ASTM A213 T22 | DIN 10216-2 10CrMo9-10 | DIN 17175 10CrMo9-10 | JIS G 3458 STPA25 |
Ibikoresho:imiyoboro n'ibikoresho by'icyuma bya ASTM A335 P22 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;
