1: Cua sov Rau Hastelloy B-2 alloys, nws yog ib qho tseem ceeb heev uas yuav tsum tau ua kom lub ntsej muag huv si thiab tsis muaj kab mob ua ntej thiab thaum cua sov. Hastelloy B-2 ua nkig yog rhuab nyob rau hauv ib puag ncig uas muaj leej faj, phosphorus, txhuas, los yog lwm yam tsawg-melting hlau paug, feem ntau yog los ntawm cov cim cim, kub qhia cov xim, roj thiab kua, haus luam yeeb. Cov roj flue yuav tsum muaj cov sulfur tsawg; Piv txwv li, sulfur cov ntsiab lus ntawm cov roj av thiab cov roj liquefied roj tsis tshaj 0.1%, cov ntsiab lus ntawm cov sulfur hauv nroog huab cua tsis tshaj 0.25g / m3, thiab cov ntsiab lus ntawm cov roj ntsha ntawm cov roj tsis tshaj 0.5%. Cov pa ib puag ncig yuav tsum tau rau lub qhov cub cua sov yog qhov nruab nrab ib puag ncig lossis ib puag ncig txo qis, thiab tsis tuaj yeem hloov pauv ntawm oxidizing thiab txo. Cov nplaim taws hauv qhov cub tsis tuaj yeem cuam tshuam ncaj qha rau Hastelloy B-2 alloy. Nyob rau tib lub sijhawm, cov khoom yuav tsum tau rhuab mus rau qhov yuav tsum tau kub ntawm qhov ceev tshaj plaws cua kub ceev, uas yog, qhov kub ntawm lub cua sov rauv yuav tsum tau nce mus rau qhov yuav tsum tau kub ua ntej, thiab ces cov khoom yuav tsum tau muab tso rau hauv lub cub tawg rau cua sov. .
2: Kub ua hauj lwm Hastelloy B-2 alloy yuav kub ua hauj lwm nyob rau hauv qhov ntau ntawm 900 ~ 1160 ℃, thiab yuav tsum tau quenched nrog dej tom qab ua. Yuav kom ntseeg tau qhov zoo tshaj plaws corrosion kuj, nws yuav tsum tau annealed tom qab kub ua hauj lwm.
3: Kev ua haujlwm txias Hastelloy B-2 alloy yuav tsum tau txais kev kho mob. Txij li thaum nws muaj kev ua haujlwm siab dua ntau dua li austenitic stainless hlau, cov cuab yeej tsim yuav tsum tau ua tib zoo xav. Yog tias qhov txheej txheem txias txias tau ua tiav, interstage annealing yog tsim nyog. Thaum qhov kev ua haujlwm txias deformation ntau dua 15%, kev kho tshuaj yuav tsum tau ua ua ntej siv.
4: Kev kho cua sov Kev kho cua sov yuav tsum tau tswj ntawm 1060 ~ 1080 ° C, thiab tom qab ntawd dej-txias thiab quenched lossis thaum cov khoom thickness siab tshaj 1.5 hli, nws tuaj yeem ua cua txias kom tau qhov zoo tshaj plaws corrosion kuj. Thaum lub sijhawm ua haujlwm cua sov, yuav tsum tau ceev faj kom huv si saum npoo ntawm cov khoom. Kev kho cua sov ntawm Hastelloy cov ntaub ntawv lossis cov khoom siv yuav tsum tau ua tib zoo saib xyuas cov teeb meem hauv qab no: txhawm rau tiv thaiv kev kho cua sov ntawm cov khoom siv, cov hlau tsis muaj steel hlau yuav tsum tau siv; lub cub tawg kub, cua sov thiab txias lub sij hawm yuav tsum tau nruj me ntsis tswj; Ua cov txheej txheem pretreatment los tiv thaiv thermal tawg; Tom qab kev kho cua sov, 100% PT yog siv rau cov khoom siv cua sov; Yog hais tias thermal tawg tshwm sim thaum kho cua sov, cov neeg uas yuav tsum tau kho cov vuam tom qab sib tsoo thiab tshem tawm yuav tsum tau txais kev kho tshwj xeeb vuam txheej txheem.
5: Descaling Cov oxides nyob rau saum npoo ntawm Hastelloy B-2 alloy thiab cov stains ze ntawm vuam seam yuav tsum tau polished nrog ib tug zoo sib tsoo log. Txij li Hastelloy B-2 alloy yog rhiab heev rau oxidizing nruab nrab, ntau nitrogen-muaj roj yuav raug tsim thaum lub sij hawm pickling txheej txheem.
6: Machining Hastelloy B-2 alloy yuav tsum tau machined nyob rau hauv lub xeev annealed, thiab nws yuav tsum muaj kev nkag siab meej txog nws cov hauj lwm hardening. Cov txheej tawv tawv yuav tsum tau txais tus nqi pub ntau dua thiab ua kom lub cuab yeej ua haujlwm tsis tu ncua.
7: Welding Hastelloy B-2 alloy weld hlau thiab tshav kub-cuam tshuam cheeb tsam yog ib qho yooj yim rau precipitate β theem thiab ua rau tsis zoo Mo, uas yog nquag mus rau intergranular corrosion. Yog li ntawd, cov txheej txheem vuam ntawm Hastelloy B-2 alloy yuav tsum ua tib zoo tsim thiab tswj nruj me ntsis. Cov txheej txheem vuam dav dav yog raws li hauv qab no: cov khoom siv vuam yog ERNi-Mo7; txoj kev vuam yog GTAW; qhov kub ntawm cov txheej txheem tswj tsis ntau tshaj 120 ° C; txoj kab uas hla ntawm vuam hlau yog φ2.4 thiab φ3.2; welding tam sim no yog 90 ~ 150A. Nyob rau tib lub sijhawm, ua ntej vuam, vuam hlau, qhov zawj ntawm qhov welded thiab qhov chaw nyob ib sab yuav tsum tau decontaminated thiab degreased. Lub thermal conductivity ntawm Hastelloy B-2 alloy yog tsawg dua li ntawm cov hlau. Yog tias siv ib qho V-shaped zawj, qhov zawj lub kaum sab xis yuav tsum nyob ib ncig ntawm 70 °, thiab cov khoom siv hluav taws xob qis yuav tsum tau siv. Kev kho cua sov tom qab vuam tuaj yeem tshem tawm qhov kev ntxhov siab seem thiab txhim kho kev ntxhov siab corrosion cracking tsis kam.
Post lub sij hawm: May-15-2023
