ALOY 625, UNSN06625
Aloyi 625 (UNS N06625) | |||||||||
Chidule | Nickel-chromium-molybdenum alloy yokhala ndi niobium yomwe imagwira ntchito ndi molybdenum kuti iwumitse matrix a aloyi ndipo potero imapereka mphamvu zambiri popanda kulimbitsa kutentha. Aloyiyi imalimbana ndi malo osiyanasiyana ochita dzimbiri kwambiri ndipo imalimbana kwambiri ndi maenje ndi dzimbiri. Amagwiritsidwa ntchito pokonza mankhwala, mlengalenga ndi uinjiniya wam'madzi, zida zowongolera kuipitsidwa, ndi zida zanyukiliya. | ||||||||
Mafomu a Standard Product | Chitoliro, chubu, pepala, mizere, mbale, zozungulira, bala lathyathyathya, katundu wopangira, hexagon ndi waya. | ||||||||
Chemical Composition Wt,% | Min | Max. | Min. | Max. | Min. | Max. | |||
Ni | 58.0 | Cu | C | 0.1 | |||||
Cr | 20.0 | 23.0 | Co | 1.0 | Si | 0.5 | |||
Fe | 5.0 | Al | 0.4 | P | 0.015 | ||||
Mo | 8.0 | 10 | Ti | 0.4 | S | 0.015 | |||
Nb | 3.15 | 4.15 | Mn | 0.5 | N | ||||
PhysicalConstants | Kachulukidwe,g/8.44 | ||||||||
Mitundu Yosungunuka, ℃ 1290-1350 | |||||||||
Zofananira Zamakina | (Solution Annealed)(1000h) Kuphuka Mphamvu (1000h) ksi Mpa 1200 ℉/650 ℃ 52 360 1400 ℉/760 ℃ 23 160 1600 ℉/870 ℃ 72 50 1800 ℉/980 ℃ 26 18 | ||||||||
Microstructure
Alloy 625 ndi aloyi yolimba-solution-solution-stiffed face-centered-cubic alloy.
Makhalidwe
Chifukwa chokhala ndi makatoni otsika komanso kukhazikika kwa kutentha, Inconel 625 imawonetsa chizolowezi chocheperako ngakhale pambuyo pa maola 50 pa kutentha kwa 650 ~ 450 ℃.
Aloyiyo imaperekedwa muzofewa zofewa zogwiritsa ntchito zonyowa (Aloyi 625, giredi 1), ndipo imavomerezedwa ndi TUV paziwiya zopanikizika mu kutentha -196 mpaka 450 ℃.
Kwa ntchito zotentha kwambiri, pamwamba pa pafupifupi. 600 ℃, komwe kumafunikira mphamvu yayikulu komanso kukana kukwawa ndi kuphulika, mtundu wowonjezera (Aloyi 625, giredi 2) wokhala ndi mpweya wambiri wa kaboni umagwiritsidwa ntchito ndipo umapezeka mukafunsidwa mumitundu ina yazinthu.
Kukana kwakukulu kwa pitting, corrosion, ndi intergranular attack;
Pafupifupi kumasuka kwathunthu ku chloride-induced stress-corrosion cracking;
Kukana kwabwino kwa mineral acids, monga nitric, phosphoric, sulfuric ndi hydrochloric acid;
Kukana bwino kwa alkalis ndi organic acid;
Zabwino zamakina katundu.
Kukaniza kwa Corrosion
Aloyi yapamwamba ya alloy 625 imapangitsa kuti ikhale yolimba kumadera osiyanasiyana owononga kwambiri. M'madera ofatsa monga mlengalenga, madzi atsopano ndi a m'nyanja, mchere wosalowerera ndale, ndi zofalitsa zamchere palibe pafupifupi kuukira. M'malo owopsa kwambiri a dzimbiri kuphatikiza faifi tambala ndi chromium kumapereka kukana kwa oxidizing mankhwala, pomwe nickel yayikulu ndi molybdenum zomwe zili mkati zimapereka kukana kwa nonoxidizing motsutsana ndi kukhudzidwa pakuwotcherera, potero kupewa kusweka kwa intergranular. Komanso, nickel yapamwamba imapereka kuchokera ku chloride ion-stress-corrosion cracking.
Mapulogalamu
Mtundu wofewa wa Alloy 625 (giredi 1) umasankhidwa kuti ugwiritsidwe ntchito m'makampani opanga mankhwala, mu engineering ya m'madzi ndi zida zowongolera kuwononga chilengedwe poteteza chilengedwe. Zomwe zimagwiritsidwa ntchito ndizo:
1. Superphosphoric acid kupanga zida;
2. Zida zopangiranso zinyalala za nyukiliya;
3. Machubu opangira mpweya wowawasa;
4. Mipope ndi kuthira mafuta okwera pofufuza mafuta;
5. Makampani akunyanja ndi zida zam'madzi;
6. Flue gasi scrubber ndi damper zigawo zikuluzikulu;
7. Chimney linings.
Pakutentha kwambiri, mpaka pafupifupi 1000 ℃, mtundu wowonjezera wa Alloy 625 (giredi 2) ungagwiritsidwe ntchito molingana ndi kachidindo ka ASME pazotengera zokakamiza. Zomwe zimagwiritsidwa ntchito ndizo:
1. Zigawo mu dongosolo gasi zinyalala ndi zinyalala kuyeretsa zomera poyera kutentha apamwamba;
2. Milu yamoto m'malo oyeretsera ndi mapulatifomu akunyanja;
3. Recuperator ndi compensators;
4. Sitima zapamadzi dizilo machitidwe utsi;
5. Machubu otenthetsera moto m'malo otenthetsera zinyalala.
Nthawi yotumiza: Nov-11-2022