ASME SA -210C

ASME SA-210 tus qauv qhia cov qib steel SA-210C. Nws yog pearlitic tshav kub-lub zog steel me me-inch raj rau boilers thiab superheaters ua los ntawm carbon-manganese hlau. "210" qhia tus lej lej, "C" qhia txog qib zog, thiab "SA" sawv cev rau ASME cov khoom siv hlau. Cov hlau no belongs rau nruab nrab carbon steel, muaj cov yas zoo, toughness, thiab weldability, muaj zog txaus hauv qab 450 degree, thiab muaj kev txaus siab oxidation tsis kam qis dua 530 degree, tab sis pearlite npas yuav tshwm sim thaum nws siv saum 450 degree ntev. lub sij hawm, thiab graphitization yuav txo qhov creep txwv thiab enduring zog thiab ua rau lub raj tawg. Raws li qhov tshwm sim, nws feem ntau yog siv rau cov cua kub ntawm cov hlab ntsha hauv qhov qis thiab nruab nrab siab boilers (kev ua haujlwm siab feem ntau tsis ntau tshaj 5.88 MPa, ua haujlwm kub qis dua 450 degree) thiab rau cov cua kub ntawm cov hlab hauv lub siab siab boilers (ua haujlwm siab feem ntau. siab tshaj 9.8 MPa, ua hauj lwm kub yog 450 degree rau 650 degree).

Cov tshuaj lom neeg muaj pes tsawg leeg ntawm SA-210C feem ntau ua raws li ASME cov qauv kev txwv. Cov pa roj carbon (C), manganese (Mn), phosphorus (P), sulfur (S), thiab silicon (Si) yog cov khoom tseem ceeb muaj nyob hauv SA-210C uas ua kom cov khoom zoo.

Chemical Composition (%) ntawm ASME SA-210C

Kev ua tau zoo thiab kev siv tau ntawm SA-210C hauv ntau daim ntawv thov yog nyob ntawm nws cov khoom siv zoo. Rigid test protocols yog siv los txiav txim cov khoom ntawm SA-210C yeeb nkab. Tensile zog, yield zog, elongation, hardness, thiab tej yam kuj yog ib co ntawm cov yam ntxwv. Kev ncaj ncees thiab kev cia siab ntawm SA-210C tubing yuav tsum tau khaws cia los ntawm kev ua raws li cov txiaj ntsig tau muab rau cov khoom zoo no.

Mechanical Properties of ASME SA-210C

Ntau qhov kev ntsuas tau raug coj los siv thaum lub sijhawm SA-210 cov txheej txheem tsim khoom los lav kev tsim cov kav dej seamless ntawm qhov zoo tshaj plaws. Kev xaiv thiab ua cov khoom siv raw khoom ib txwm tuaj ua ntej, thiab tom qab ntawd cov hlau yog yaj hauv qhov cub. Tom qab cam khwb cia rau hauv billets los yog slabs, cov hlau molten yog muab los ntawm ntau yam kub thiab txias ua hauj lwm txheej txheem ua ntej yuav dov rau hauv seamless kav. Txhawm rau kom ua tiav cov qauv, ua cov txheej txheem kho cua sov thiab ua tiav, suav nrog kev ncaj, txiav, thiab tshuaj xyuas.

SA-210C feem ntau yog siv los tsim 300,000 boiler dej-txias phab ntsa. Nws muaj kev ua haujlwm zoo welding. Feem ntau, nws tsis tas yuav tsum tau preheated ua ntej vuam, thiab kev kho cua sov tsis tas yuav tsum tau tom qab vuam. Hauv kev tsim khoom tiag tiag, ob txoj kev vuam pob tw tau koom nrog, ob qho tib si yog tib lub pob tw hlau: phau ntawv argon tungsten arc vuam (GTAW) pob qij txha (xaiv H08Mn2SiA vuam hlau), phau ntawv argon tungsten arc vuam rov qab ntxiv rau phau ntawv arc vuam (GTAW ntxiv rau SMAW) npog ntsej muag pob qij txha (xaiv H05MnSiAlTiZrA vuam hlau ntxiv rau CHE507 (J507) electrode), qhov vuam zawj (ib sab) yog 30 degree ± 1 degree.

Thaum SA-210C, qhov nruab nrab-carbon manganese steel high-pressure boiler raj, ua tau zoo nyob rau hauv ob qho tib si txias thiab kub ua, nws yog qhov zoo tshaj plaws kom tshem tawm cov xim xiav nkig kub khoov raj ntawm li 250 degree . Tsuas yog thaum qhov piv ntawm qhov nkhaus nkhaus R rau cov yeeb nkab steel sab nraud yog tsawg dua 2.5 yog qhov kev kho cua sov tsim nyog thaum khoov cov yeeb nkab. Kev kho cua sov yuav tsum tau siv thaum khoov kub ntawm 870 thiab 880 degree thiab R / D piv yog tsawg dua 1.25.

Nrog rau kev ua haujlwm kub qis dua 500 degree, SA-210C feem ntau siv hauv boilers rau 300 MW, 600 MW, thiab lwm yam loj-tswj fais fab nroj tsuag, nrog rau cov phab ntsa dej, kev lag luam, low-temperature superheaters, thiab lwm yam cua sov saum npoo kav dej, headers, chav thiab dej kav dej, thiab lwm yam.