Qhov sib txawv tseem ceeb ntawm Hastelloy C22 thiab C276 yog lawv daim ntawv thov vim lawv cov tshuaj sib txawv. Hastelloy C22 tseem ceeb heev vim nws qhov kev txhim kho ntau yam thiab tshwj xeeb tsis kam rau cov tshuaj chloride-induced pitting whereas Hastelloy C276 tseem ceeb heev vim nws qhov kev ua tau zoo hauv ntau yam tshuaj lom neeg.
Hastelloy C22 thiab C276 yog cov khoom siv nickel-chromium-molybdenum, uas peb hu ua alloys. Lawv muaj cov tshuaj sib txawv, thiab yog li, lawv muaj txiaj ntsig zoo hauv kev siv sib txawv. Piv txwv li, raws li cov ntsiab lus chromium ntawm Hastelloy C22 siab dua Hastelloy C276, Hastelloy C276 yog cov resistant rau oxidizing media.
Hastelloy C22 yog dab tsi?
Hastelloy C22 yog cov hlau uas muaj cov nickel, chromium thiab molybdenum. Raws li nws cov yam ntxwv tseem ceeb, cov hlau no tiv taus oxidizing thiab tsis-oxidizing tshuaj. Nws muab lwm cov ntaub ntawv nrog kev tiv thaiv los ntawm pitting, tshwj xeeb tshaj yog, chloride-induced pitting. Piv txwv li, nws muab kev tiv thaiv los ntawm chloride-induced pitting uas yog ib qho kev tsis txaus siab ntawm kev tawm tsam rau cov hlau tsis muaj zog. Ntxiv mus, nws muab kev tiv thaiv los ntawm crevice nres thiab kev nyuaj siab corrosion cracking.
Ntxiv rau qhov ntawd, cov khoom siv no muaj cov ntsiab lus chromium siab piv rau lwm cov alloys ntawm Hastelloy tsev neeg. Tsis tas li ntawd, cov hlau no yog cov ductile heev, thiab nws nthuav dav weldability zoo heev. Feem ntau ntawm lub sijhawm, nws tuaj yeem tsim tau yooj yim rau ntawm cov khoom lag luam. Cov hlau no muaj xws li cov ntawv txheeb, strips, billets, tuav, xov hlau, kav dej, thiab lwm yam. Nyob rau hauv cov txheej txheem tshuaj, nws cov kev siv xws li reactors, tshav kub exchangers thiab txhua. Cov tshuaj muaj pes tsawg leeg ntawm no alloy yog raws li nram no;
- Nickel 56%
- Chromium 22%
- Molybdenum 13%
- Iron 3%
- Tungsten 3%
- Cob alt 2.5%
Hastelloy C276 yog dab tsi?
Hastelloy C276 kuj yog ib qho hlau uas muaj cov nickel, chromium thiab molybdenum, nrog rau cov chromium ntau dua li lwm cov ntaub ntawv Hastelloy. Tab sis cov ntsiab lus ntawm chromium yog qis dua li ntawm C22. Cov yam ntxwv tseem ceeb ntawm cov khoom siv no yog tias nws muaj qhov ua tau zoo (txog 50 xyoo) hauv ntau yam tshuaj lom neeg. Ntxiv mus, cov khoom no yog thawj alloy ntawm lwm cov alloys ntawm Hastelloy tsev neeg.
Daim duab 01: Lub pob-valve tsim nrog Hastelloy C276.
Zoo li lwm cov tswv cuab ntawm Hastelloy tsev neeg, cov hlau no kuj yog cov khoom siv thiab muaj kev sib txuas siab. Nws muaj qhov tshwj xeeb tsis kam tiv thaiv kev ntxhov siab corrosion cracking. Txij li nws muaj ntau ntawm chromium thiab molybdenum, nws tuaj yeem tiv thaiv cov tshuaj corrosive xws li oxidizing thiab non-oxidizing acids. Nws qhia tau hais tias muaj kev tiv thaiv zoo rau pitting nyob rau hauv muaj chloride thiab lwm yam halides. Tsis tas li ntawd, nws tiv thaiv kev ntxhov siab tawg los ntawm sulfides thiab. Hauv kev lag luam qib, cov hlau no muaj xws li daim hlau, strips, nplooj ntawv, billets, tuav, xov hlau, kav, thiab lwm yam. Cov tshuaj muaj pes tsawg leeg ntawm cov khoom no yog raws li nram no:
- Nickel 57%
- Chromium 16%
- Molybdenum 16%
- Iron 5%
- Tungsten 4%
- Cob alt 2.5%
Qhov txawv ntawm Hastelloy C22 thiab C276 yog dab tsi?
Ob leeg Hastelloy C22 thiab C276 yog cov alloys uas muaj cov nickel, chromium, thiab molybdenum nrog cov chromium ntau dua li lwm cov ntaub ntawv Hastelloy. Yog li ntawd, ob qho tib si no yog cov ntaub ntawv alloy muaj ntau cov hlau, tab sis, qhov sib txawv ntawm Hastelloy C22 thiab C276 yog cov muaj pes tsawg leeg ntawm txhua cov hlau hauv alloy. Vim tias qhov sib txawv ntawm Hastelloy C22 thiab C276, lawv cov ntawv thov sib txawv hauv kev lag luam tshuaj. Piv txwv li, Hastelloy C22 tseem ceeb heev vim nws qhov kev txhim kho ntau yam thiab tshwj xeeb rau cov tshuaj chloride-induced pitting whereas Hastelloy C276 tseem ceeb heev vim nws qhov kev ua tau zoo nyob rau hauv ntau yam tshuaj lom neeg.
Cov duab hauv qab no nthuav tawm qhov sib txawv ntawm Hastelloy C22 thiab C276 hauv daim ntawv teev npe.
Summary – Hastelloy C22 vs C276
Hastelloy C22 thiab C276 yog cov ntaub ntawv tseem ceeb heev hauv tsev neeg Hastelloy. Lawv muaj ntau daim ntawv thov hauv kev lag luam tshuaj vim lawv cov tshuaj sib txawv. Qhov sib txawv loj ntawm Hastelloy C22 thiab C276 yog tias Hastelloy C22 tseem ceeb heev vim nws qhov kev txhim kho ntau yam thiab tshwj xeeb tsis kam rau cov tshuaj chloride-induced pitting whereas Hastelloy C276 tseem ceeb heev vim nws qhov kev ua tau zoo hauv ntau hom tshuaj lom neeg.
