Alloy Profaili ati ise ipa
Inconel 625, ti a tun mọ si Nickel Alloy 625 tabi UNS N06625, jẹ -ojutu-nickel ti o lagbara{4}chromium{5}}molybdenum{6} niobium alloy ti a ṣe fun awọn iṣẹ ṣiṣe nibiti ipata ati iwọn otutu ti npọpọ. O ṣetọju agbara iyasọtọ, resistance ti nrakò, ati iduroṣinṣin oxidation lati awọn ipo cryogenic titi di iwọn 1000 (1832 iwọn F).
Ipele yii jẹ lilo pupọ ni awọn ohun elo omi, awọn ọna ṣiṣe kemikali, awọn ẹka iṣakoso idoti, awọn olupilẹṣẹ iparun, ati awọn apejọ eefin eegun ọkọ ofurufu{0} awọn ohun elo nibiti iduroṣinṣin igbekalẹ ati iṣakoso ipata gbọdọ ṣiṣẹ ni afiwe. Ni-Cr-Mo-Nb iwọntunwọnsi n ṣẹda ara{5} film oxide iwosan ati pe o dinku ikọlu agbegbe paapaa ni ekikan ati kiloraidi{6} awọn ipo ọlọrọ.
Apẹrẹ Kemikali ati Awọn abuda Metallurgical
| Eroja | % Ibiti | Išẹ |
|---|---|---|
| Nickel (Ni) | Ti o tobi ju tabi dogba si 58.0 | Matrix ipilẹ; ipata ati imuduro gbona |
| Chromium (Kr) | 20.0–23.0 | Fọọmu ohun elo afẹfẹ palolo fun iṣakoso ifoyina |
| Molybdenum (Mo) | 8.0–10.0 | Koju pitting ati crevice ipata |
| Niobium (Cb + Ta) | 3.15–4.15 | Okun ojutu to lagbara; idilọwọ abuku ti nrakò |
| Irin (Fe) | Kere ju tabi dogba si 5.0 | Ṣe ilọsiwaju awọn abuda iṣelọpọ |
| Erogba (C) | Kere ju tabi dogba si 0.10 | Iṣakoso carbide Ibiyi |
| Mn / Si / S | Kere ju tabi dogba si 0.5 / 0.5 / 0.015 | Bojuto cleanliness ati weld didara |
Ipa apapọ ti molybdenum ati niobium n ṣe agbejade agbara giga laisi líle ojoriro, ngbanilaaye iṣelọpọ irọrun ati iṣẹ iduroṣinṣin lakoko ifihan igba pipẹ{{0}. Ohun elo microstructure yii ṣe idaduro awọn irugbin ti o dara ati idilọwọ ọkà - embrittlement aala lẹhin alurinmorin tabi annealing.
Igbẹkẹle ẹrọ labẹ iwọn otutu ati Wahala
| Ohun ini | Metiriki (iṣẹju) | Imperial (iṣẹju) | Apejuwe |
|---|---|---|---|
| Agbara fifẹ | 827 MPa | 120 ksi | Ṣetọju iduroṣinṣin si iwọn 870 |
| Agbara Ikore (0.2%) | 414 MPa | 60 ksi | Koju abuku labẹ fifuye |
| Ilọsiwaju | Ti o tobi ju tabi dọgba si 30% | Ti o tobi ju tabi dọgba si 30% | Ifiranṣẹ ductility ti o dara julọ{0}}ifihan |
| Lile | Kere ju tabi dogba si 95 HRB | Kere ju tabi dogba si 95 HRB | Pese machinability ati formability |
Ni awọn ipo iṣẹ cyclic, Inconel 625 ṣe idaduro agbara rirẹ ati iduroṣinṣin iwọn pẹlu pipadanu aifiyesi ni iṣakoso ifoyina.
Ilana iṣelọpọ ati Itọju Ooru
Awọn paipu ati awọn tubes ti wa ni iṣelọpọ nipasẹ extrusion gbigbona tabi iyaworan tutu ati atẹle ojutu annealed ni iwọn 1090-1150 (1995-2100 iwọn F) ti o tẹle pẹlu piparẹ iyara lati mu pada resistance resistance. Awọn oriṣi welded jẹ iṣelọpọ nipasẹ TIG tabi ilana pilasima labẹ aabo gaasi inert.
Ṣiṣe deedee ati iwọn otutu ṣetọju isokan ogiri, lakoko ti yiyan ati annealing didan tun mu fiimu dada Cr₂O₃ aabo ṣiṣẹ. Ṣiṣejade ati ayewo ni ibamu pẹluASTM B444, B705, ati B704awọn ajohunše.
Ipata Resistance kọja Media
Iṣe meji ti alloy {{0}nickel-fiimu oxide chromium fun awọn ipo oxidizing ati molybdenum{2}niobium imudara fun idinku awọn agbegbe{3} yoo fun ni iduroṣinṣin kemikali gbooro:
- Omi okun ati awọn kiloraidi:Koju dida, gbigbẹ, ati aapọn{0}}idibajẹ biba.
- Awọn acid oxidizing (nitric, chromic):Chromium ṣe itọju ifaramọ oxide ni iwọn otutu.
- Idinku acids (hydrochloric, phosphoric):Molybdenum ṣe idiwọ ikọlu agbegbe.
- Gaasi ekan (H₂S):Idurosinsin lodi si sulfide wahala wo inu fun epo ati gaasi iṣẹ.
- Omi iwọn otutu giga-:Sooro si iwọn ati pipadanu irin si iwọn 1000.
Ibiti Onisẹpo ati Ipese Ọja
| Iru | Ita Opin | Sisanra Odi | Gigun | Sipesifikesonu |
|---|---|---|---|---|
| Alailẹgbẹ Pipe | 6-610 mm | 1-50 mm | Ti o de 12 m | ASTM B444 / ASME SB444 |
| Weld Pipe | 25-1200 mm | 1,5-60 mm | Ti o de 12 m | ASTM B705 / ASME SB705 |
| Tube (Olupaparọ Ooru / Ohun elo) | 6-76 mm | 0.8-10 mm | Okun / taara | ASTM B704 / ASME SB704 |
Ipari ifarada ni wiwọ wa fun ohun elo ati ooru{1}} awọn apejọ paarọ to nilo pipe pipe ati ipari dada.
Idanwo, Ijẹrisi, ati Idaniloju Didara
Gbogbo awọn ọja ni idanwo funASTM B829fun aiṣotitọ apanirun ti kii ṣe {{0} ati deede iwọn.
Awọn ayewo igbagbogbo pẹlu hydrostatic tabi idanwo ultrasonic, ijẹrisi PMI fun akoonu nickel, ati idanwo ibajẹ intergranular (Ọna ASTM G28 A/C).
Octal Pipe ipese ohun elo pẹluEN 10204 3.1 / 3.2 MTC, wiwa ni kikun, ati awọn aṣayan ayewo ẹnikẹta (BV, SGS, TUV).
Imuse Iṣẹ ati Atilẹyin Iṣẹ
Inconel 625 nṣe iranṣẹ awọn amayederun to ṣe pataki pẹlu awọn opo gigun ti ita ni awọn brines kiloraidi, awọn paati eefi aye afẹfẹ, awọn ohun elo atunto iparun, awọn ohun elo imunmi, ati awọn ẹrọ imukuro idoti.
Octal Pipe nfunni awọn solusan ipese ti iṣelọpọ pẹlu afijẹẹri alurinmorin, isọdọkan NDE, ati iwe imọ-ẹrọ ti a ṣe fun EPC ati awọn iṣẹ akanṣe agbara. Išakoso ilana deede ṣe idaniloju iṣẹ ṣiṣe atunṣe ati ipata ni gbogbo ipele ooru.
FAQ
Q1: Iwọn wo ni MO yẹ ki o pato fun Alloy 625 pipe vs tube?
Q2: Njẹ UNS N06625 (Alloy 625) le ṣee lo ni iṣẹ ekan (H2S)?
Q3: Kini MO le beere lati rii daju didara Inconel 625 ṣaaju rira?
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