444 Stainless Hlau Tube

Lub 444 stainless hlau raj yog ib tug ferritic, tsis - Cov kev pheej hmoo uas muaj kev pheej hmoo ntawm kev pheej hmoo ntawm kev pheej hmoo corrosion thiab pitting. Hom no yog paub txog nws cov ntsiab lus muaj cov roj carbon tsawg, uas ua rau nws ruaj khov rau kev tiv thaiv kev txhim kho hauv nruab nrab thaum raug kub.

Zoo heev corrosion, tshwj xeeb tshaj yog tiv thaiv cov crevice corrosion thiab pitting

Cov oxidation zoo tsis kam ntawm nce qhov kub

Muaj zog thiab muaj sia

Cov Firjility Zoo Thiab Veldability

Cov pa roj carbon tsawg rau kev txhim kho intergranular corrosion tsis kam

Raj billet npaj: Ua ntej, npaj lub raj xa nyiaj yuav tsum raug kuaj xyuas. Qhov zoo tshaj ntawm cov raj mis raj ncaj qha cuam tshuam zoo ntawm qhov kawg stainless hlau ib leeg. Cov khoom siv thiab cov khoom sib thooj ntawm cov raj xa nqi yuav tsum ua kom tau raws li kev tsim khoom. Piv txwv li, cov tshuaj lom neeg muaj pes tsawg leeg ntawm lub billet yuav tsum ua kom tau raws li cov qauv hlau muaj raws li 444 chromium, thiab suav cov kev sib txawv ntawm txhua qhov kev sib txawv ntawm txhua qhov kev sib txawv ntawm txhua qhov kev sib txawv ntawm txhua qhov kev sib tw.

Cua sov lub raj billet: tom qab lub raj billet yog npaj nws yog rhuab. Lub cua sov yog siab, feem ntau nyob ib ncig ntawm 1250 degree, thiab cov roj hauv lub raj cua sov feem ntau yog acetylene oon. Cov txheej txheem cua sov no tso cai rau lub raj billet kom ncav cuag qhov ntsuas kub tsim nyog rau kev ua tiav thiab ua tiav.

Tho thiab dov: tom qab lub raj bil yog rhuab, nws yuav tsum tau raug chob thiab tom qab ntawd dov. Tho yog ua tiav siv lub conical laum me ntsis uas tig ntawm kev kub ceev rau tsim cov raj ntawm cov yeeb nkab nyoos. Cov kauj ruam no muaj cov kev xav tau rau cov cuab yeej thiab thev naus laus zis, xws li cov tho kev thiab cov duab ntawm lub qhov, tuaj yeem qhov zoo ntawm cov qauv steel txuas ntxiv. Post - Kev Kho Mob: Tom qab dov, lub raj nyoos yuav tsum tau ua kom sov, qhov loj me, kho cua sov, thiab ncaj. Kev kho yuav txhim kho cov khoom ntawm cov yeeb nkab steel, xws li nce nws lub zog thiab tawv. Cov haujlwm ncaj ua haujlwm kom ncaj ntawm cov hlau nplaum ntawm cov hlau ua kom tau raws thiab teeb tsa cov cai. Thaum kawg, tom qab ua tiav thiab tshuaj xyuas, cov khoom yog khaws cia rau hauv lub tsev rau khoom.

Cov tshuaj lom neeg muaj pes tsawg leeg ntawm 444 stainless hlau feem ntau suav nrog:

Chromium (CR): 17.50-19.50%

Nickel (NI): 1.00% Ntau

Molybdenum (MO): 1.75-2.50%

Manganese (MN): 1.00% Ntau

Silicon (si): 1.00% siab tshaj plaws

Cov pa roj carbon (c): 0.025% qhov siab tshaj plaws

Phosphorus (p): 0.040% ntau tshaj

Sulphur (s): 0.030% Ntau

Hauv Tebchaws Meskas, 444 stainless hlau yog them los ntawm ASTM (American Society Soj Ntsuam thiab Khoom Siv) Cov ntaub ntawv tshwj xeeb A268. Tus qauv ntsuas rau 444 stainless hlau yog TP444, qhov twg "tp" sawv ntsug rau "raj thiab yeeb nkab." Hauv Tebchaws Europe, tus en (European qauv) sib npaug yog en 1.4521.

Cim npe nrov: 444 Stainless Hlau Tube, Tuam Tshoj 444 Stainless Hlau Tube Manufacturers, lwm tus neeg, Hoobkas