Lub nplhaib forging no suav nrog forgings xws li lub nplhaib hauv nruab nrab, lub nplhaib kiv cua, lub nplhaib me me, thiab lub nplhaib ntim dej compression ntawm lub tshuab hluav taws xob turbine, tab sis tsis haum rau cov nplhaib tsis sib nqus.
Kev tsim khoom:
1 Smelting
1.1. Cov hlau siv rau forgings yuav tsum tau smelted nyob rau hauv ib tug alkaline hluav taws xob rauv. Nrog kev pom zoo los ntawm tus neeg yuav khoom, lwm txoj kev smelting xws li electro-slag remelting (ESR) kuj tseem siv tau.
1.2. Rau forgings ntawm qib 4 lossis siab dua thiab qib 3 forgings nrog phab ntsa thickness tshaj 63.5mm, cov hlau molten siv yuav tsum tau nqus-kho lossis ua kom zoo dua los ntawm lwm txoj hauv kev kom tshem tawm cov pa phem, tshwj xeeb tshaj yog hydrogen.
2 Forging
2.1. Txhua steel ingot yuav tsum muaj txaus txiav nyiaj los xyuas kom meej forging zoo.
2.2. Forgings yuav tsum tau tsim los ntawm forging presses, forging rauj, los yog dov mills uas muaj peev xwm txaus los xyuas kom meej tag nrho forging ntawm tag nrho cov ntoo khaub lig-section ntawm cov hlau thiab xyuas kom meej tias txhua seem muaj txaus forging piv.
3 Kev kho cua sov
3.1. Tom qab forging tiav lawm, lub forgings yuav tsum tau tam sim ntawd mus rau preheating kev kho mob, uas yuav ua tau annealing los yog normalizing.
3.2. Kev kho cua sov ua haujlwm yog quenching thiab tempering (16Mn tuaj yeem siv normalizing thiab tempering). Qhov kawg tempering kub ntawm forgings yuav tsum tsis txhob qis dua 560 ℃.
4 Tshuaj muaj pes tsawg leeg
4.1. Kev tshuaj xyuas tshuaj muaj pes tsawg leeg yuav tsum tau ua ntawm txhua pawg ntawm cov hlau molten, thiab cov txiaj ntsig kev tshuaj ntsuam yuav tsum ua raws li cov qauv tsim nyog.
4.2. Cov khoom tiav cov tshuaj lom neeg muaj pes tsawg leeg yuav tsum tau ua ntawm txhua qhov kev sib tsoo, thiab cov txiaj ntsig kev soj ntsuam yuav tsum ua raws li cov qauv tsim nyog. 4.3. Thaum lub tshuab nqus tsev decarburizing, cov ntsiab lus silicon yuav tsum tsis pub tshaj 0.10%. 4.4. Rau qib 3 ntiv nplhaib forgings nrog phab ntsa thickness tshaj 63.5mm, cov ntaub ntawv uas muaj cov ntsiab lus nickel ntau dua 0.85% yuav tsum tau xaiv.
5 Mechanical zog
5.1. Lub tangential mechanical zog ntawm forgings yuav tsum ua raws li cov qauv tsim.
6 Kev sim tsis muaj kev puas tsuaj
6.1. Cov forgings yuav tsum tsis txhob muaj kab nrib pleb, nti, folds, shrinkage qhov, los yog lwm yam impermissible defects.
6.2. Tom qab precision machining, txhua qhov chaw yuav tsum tau soj ntsuam cov khoom sib nqus. Qhov ntev ntawm cov hlau nplaum yuav tsum tsis pub tshaj 2 hli.
6.3. Tom qab kev kho cua sov, cov forgings yuav tsum tau kuaj xyuas ultrasonic. Qhov pib rhiab heev sib npaug txoj kab uas hla yuav tsum yog φ2 hli, thiab ib qho tsis xws luag yuav tsum tsis txhob tshaj qhov sib npaug φ4mm. Rau ib qho kev tsis xws luag ntawm qhov sib npaug ntawm txoj kab uas hla ntawm φ2mm ~ ¢ 4mm, yuav tsum tsis pub ntau tshaj xya qhov tsis xws luag, tab sis qhov kev ncua deb ntawm ob qhov chaw nyob ib sab yuav tsum muaj ntau tshaj tsib npaug ntawm qhov loj dua txoj kab uas hla, thiab tus nqi attenuation los ntawm qhov tsis xws luag yuav tsum tsis txhob yuav. ntau dua 6 dB. Cov teeb meem uas dhau cov qauv saum toj no yuav tsum tau tshaj tawm rau cov neeg siv khoom, thiab ob tog yuav tsum sab laj txog kev tuav.
Post lub sij hawm: Nov-09-2023
