Alloy 28yog ib tug high-alloy multi-purpose austenitic stainless hlau rau kev pab nyob rau hauv heev corrosive tej yam kev mob. Qib yog characterized by:
- High corrosion kuj nyob rau hauv muaj zog acids
- Zoo heev tiv thaiv kev ntxhov siab corrosion cracking (SCC) thiab intergranular corrosion nyob rau hauv ntau qhov chaw
- Siab tiv taus pitting thiab crevice corrosion
- Zoo weldability
Cov qauv
- UNS: N08028
- ISO: 4563-080-28-I
- EN Nr.: 1.4563
- EN Lub Npe: X 1 NiCrMoCu 31-27-4
- PIB: 1.4563
- DIN: X 1 NiCrMoCuN 31 27 4
- ib: 2584
- KHOOM: Z1NCDU31-27-03
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|
| ≤ 0.020 | ≤0.7 | ≤ 2.0 | ≤ 0.020 | ≤ 0.010 | 27 | 31 | 3.5 | 1.0 | ≤0.1 |
Vim nws cov khoom zoo corrosion kuj, Sanicro® 28 tuaj yeem siv rau hauv ntau qhov chaw sib txawv. Cov npe hauv qab no yog ob peb yam piv txwv ntawm daim ntawv thov uas qhov no alloy yog tshwj xeeb tshaj yog haum.
Phosphoric acid
Hnub no,Alloy 28 lubSanicro 28 yog cov khoom siv hlau siv dav tshaj plaws rau cov raj evaporator hauv kev tsim cov phosphoric acid los ntawm txoj kev "ntub". Ob peb chav nyob tam sim no tau ua haujlwm rau ntau tshaj 10 xyoo. Cov graphite kub exchangers, hloov los ntawm Sanicro 28, feem ntau tau rov muaj teeb meem nrog cov hlab ntsha tawg thiab poob ntawm ntau lawm.
Sulfuric acid
Alloy 28 lubSanicro 28 yog cov khoom tsim nyog rau cov kav dej thiab cov khoom siv hluav taws xob sib hloov, tshwj xeeb tshaj yog nyob rau ntawm qhov siab ntawm 40 thiab 70% ntawm deaerated acid thiab tshaj 85%.Alloy 28 lubSanicro 28 muaj kwv yees li qhov tsis kam ntawm Alloy C hauv cov kua qaub (98% H2SO4).
Roj thiab roj
Alloy 28 lubSanicro 28 yog siv rau kev tsim tubing, casing thiab liners nyob rau hauv tob, qaub qhov dej. Cov khoom siv kuj pom zoo rau cov roj qhov dej nrog ib puag ncig corrosive. Rau cov laj thawj no, cov raj xa dej txias txias nrog lub zog siab. Hauv qhov kev daws teeb meem annealed,Alloy 28 lubSanicro 28 kuj tseem siv los ua cov kav dej rau kev thauj cov roj corrosive thiab roj thiab rau cov khoom siv hluav taws xob hauv cov chaw kho mob. Sanicro 28 wirelines yog siv los txo cov cuab yeej thiab tswj cov cuab yeej hauv cov roj sib sib zog nqus thiab roj qhov dej.
Fluoride-cov kabmob media
Fluoride-cov kabmob off-gases tuaj yeem tsim thaum tsim cov phosphoric acid thiab cov chiv sib xyaw. Cov pa roj carbon monoxide no yuav tsum muab pov tseg vim ib puag ncig. Sanicro 28 yog qhov zoo tagnrho rau lub hom phiaj no. Cov kev ntsuam xyuas tau pom tias nws zoo dua rau qib siab dua alloyed CrNiMo rau kev rov qab los ntawm fluoride-cov kabmob gypsum.
Nuclear fais fab nroj tsuag
Vim nws qhov kev tiv thaiv siab rau SCC, pitting thiab crevice corrosion, Sanicro 28 tau raug xaiv rau cov khoom siv hluav taws xob hauv hluav taws xob nuclear.
Dej hiav txwv thiab chloride-cov dej txias txias
Nws muaj kev tiv thaiv siab rau pitting thiab crevice corrosion ua rau Sanicro 28 yog ib qho khoom siv zoo heev rau seawater-carrying piping thiab seawater-cooled heat exchangers. Qhov no tau lees paub los ntawm kev ua tau zoo.
Sanicro 28 tau hloov nickel alloys, CuNi, bimetallic hlab thiab coated carbon steel hlab, uas ua tsis tau tejyam vim corrosion. Kev ua tau zoo ntawm Sanicro 28 tau zoo heev.
Nyob rau hauv seawater-txias tshav kub exchangers thiab tshav kub exchangers uas ua hauj lwm nrog chloride-cov kabmob txias dej, Sanicro 28 muaj siab corrosion kuj rau ob qho tib si dej thiab txias nruab nrab.
Thaum cov nroj tsuag txias dej hiav txwv raug kaw, tsis tas yuav tso cov kav dej los yog yaug nrog dej tshiab, yog tias lub sijhawm kaw luv dua li ib hlis thiab cov dej kub qis dua 30 ° C (85 ° F) .
Lub duplex stainless hlau 2507 yog resistant dua Sanicro 28 nyob rau hauv dej hiav txwv.
Post lub sij hawm: Dec-24-2019