I-alloy 725 iwukuqina kwezulu, ingxubevange ye-nickel-base enikeza ukumelana okukhethekile ekuqhekekeni kokugqwala kwengcindezi kanye nokugqwala okujwayelekile kanye nokugqwala kokugqwala esimweni sokuqina sobudala.Ngokumelana nokugqwala okufana nokungu-625 futhi okungaphezulu kwalokho kwe-718, 725 kucatshangelwa izinhlelo zokusebenza lapho izindawo ezigqwala kakhulu zikhathaza khona.Amandla okukhiqiza (i-0.2% offset) ngaphezu kuka-120 ksi (827 MPa) angatholwa ngokuguga ngaphandle kokusebenza okufudumele noma okubandayo kwangaphambili.Amandla okuqinisa imvula abaluleke kakhulu ezinhlelweni zokusebenza lapho usayizi wesigaba esikhulu noma umumo oyinkimbinkimbi uvimbela ukusebenza okufudumele.
Ingxubevange | % | Ni | Cr | Fe | Mo | P | Nb | C | Mn | Si | S | Al | Ti |
725 | Okuncane. | 55.0 | 19.0 | ibhalansi | 7.0 | - | 2.75 | - | - | - | - | - | 1.0 |
Ubukhulu. | 59.0 | 22.5 | 9.5 | 0.015 | 4.0 | 0.03 | 0.35 | 0.2 | 0.01 | 0.35 | 1.7 |
Ukuminyana | 8.3 g/cm³ |
Iphoyinti lokuncibilika | 1271-1343 ℃ |
Isimo | 0.2% Amandla Esivuno | Amandla Okuqina Okugcina | % Ubude kwe 4d | % Ukuncishiswa Kwendawo | Ukuqina kweBrinell HB | HRC | |||
ksi | I-MPa | ksi | I-MPa | I-Ft.-lbs | J | ||||
Isixazululo sinqanyuliwe | 47 | 324 | 117 | 806 | 70 | 72 | - | - | 28 |
Isixazululo Annealed + Aged | 134 | 923 | 186 | 1282 | 33 | 51 | 87 | 118 | 35 |
Ibha/Induku | Intambo |
I-ASTM B 805, I-ASME Code Case 2217,Ukucaciswa kwe-SMC HA91, I-ASME Code Case 2217 | I-ASTM B 805, I-ASME Code Case 2217 |
•I-lron-nickel-chromium-molvbdenum-niobium based alloy, ukumelana kahle nohlu olubanzi lwamakhemikhali alimazayo.Imelana kakhulu nokugqwala, umgodi, kanye nokuqhekeka kwengcindezi endaweni equkethe i-carbon dioxide, i-chlorine ne-hydrogen sulfide.Ukumelana nokugqwala okuvelele kwezindawo eziqukethe amakhemikhali ane-asidi.Ukumelana nokugqwala okuhle kwamanzi olwandle namanzi olwandle.
•Ukumelana nokugqwala okuhle ekusetshenzisweni kokushisa okuphezulu.njengokukhiqizwa kukawoyela negesi.lapho ingxubevange inokumelana okuhle nokugqwala kwe-H2S.
Amabhere nezinye izingxenye zemishini edinga ukumelana okuphezulu namakhemikhali ane-asidi noma izindawo.Izingxenye noma i-equioment esetshenziswa ezimeni zasolwandle