Marine Steel Phaj Gradea BDE Rau Shipyard

Dab tsi cuam tshuam rau kev ua haujlwm vuam ntawm Marine Steel Phaj Qib A, B, D, thiab E rau Shipyards?

Hauv kev lag luam shipbuilding, welding kev ua tau zoo ntawm Marine Steel Phaj Qib A, B, D, thiab E yog qhov tseem ceeb vim nws cuam tshuam ncaj qha rau cov qauv kev ncaj ncees thiab kev nyab xeeb ntawm cov hlab ntsha. Ntau yam tuaj yeem ua si uas tuaj yeem cuam tshuam qhov vuam zoo thiab kev ua tau zoo ntawm cov qib steel no.

Cov tshuaj muaj pes tsawg leeg ntawm cov hlau phaj yog qhov tseem ceeb. Cov khoom xws li carbon, manganese, silicon, sulfur, thiab phosphorus muaj qhov txawv txav. Cov ntsiab lus carbon, yog tias siab dhau, tuaj yeem ua rau tsim cov nkig microstructures hauv thaj tsam weld, ua rau muaj kev cuam tshuam rau kev tawg. Manganese pab txhawb rau lub zog thiab ductility tab sis nyob rau hauv ntau ntau yuav ua rau hardening thiab txo weldability. Silicon cuam tshuam qhov fluidity ntawm lub pas dej weld, thaum leej faj thiab phosphorus, suav tias yog impurities, tuaj yeem txhawb kev tsim cov theem nkig thiab ua rau muaj kev cuam tshuam rau cov khoom siv kho tshuab.

Cov ntsiab lus alloying tam sim no nyob rau hauv cov qib steel kuj ua lub luag haujlwm tseem ceeb. Chromium, npib tsib xee, molybdenum, thiab lwm yam tuaj yeem cuam tshuam rau hardenability thiab tshav kub-cuam tshuam cheeb tsam (HAZ) yam ntxwv. Piv txwv li, qib siab ntawm chromium thiab molybdenum tuaj yeem ua rau muaj kev pheej hmoo ntawm HAZ tawg.

Cov txheej txheem vuam, suav nrog hom vuam txoj kev (xws li shielded hlau arc vuam, roj hlau arc vuam, los yog submerged arc vuam), vuam tam sim no, voltage, thiab vuam ceev, muaj kev cuam tshuam loj heev. Kev xaiv tsis raug ntawm cov kev txwv no tuaj yeem ua rau tsis tiav fusion, cov khoom siv hluav taws xob ntau dhau los ua rau microstructure degradation, lossis cov cua kub tsis txaus ua rau kev sib txuas tsis zoo.

Kev kho cua sov ua ntej thiab tom qab vuam (PWHT) yog qhov tseem ceeb. Preheating pab txo qhov cua txias thaum lub sij hawm vuam, txo qhov tsim ntawm cov tawv thiab brittle microstructures. PWHT feem ntau yog ua hauj lwm los txo cov kev ntxhov siab uas seem, txhim kho microstructure, thiab txhim kho cov cuab yeej cuab tam ntawm qhov sib koom ua ke.

Lub thickness thiab cov duab ntawm cov hlau phaj tseem cuam tshuam rau kev ua haujlwm vuam. Cov phaj tuab xav tau kev tswj xyuas kom zoo dua ntawm cov khoom siv hluav taws xob thiab cov vuam sib txuas kom tsis txhob cuam tshuam thiab tawg. Cov duab sib dhos thiab cov duab sib koom ua ke tuaj yeem ua rau muaj kev sib tw hauv kev ua tiav cov cua sov zoo sib xws thiab kev nkag mus rau vuam kom zoo.

 

Vim li cas thiaj xaiv peb?
Peb txaus siab rau peb lub peev xwm los muab cov kev cai daws teeb meem rau peb cov neeg siv khoom cov kev xav tau tshwj xeeb.
Peb txheeb xyuas thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb Marine Steel Phaj Gradea BDE Rau Shipyard, thiab tsim cov kev qhia tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom ntseeg peb kom xa cov khoom zoo Cold-rolled Steel khoom raws sij hawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis siv cov kev pab cuam sov so thiab kev xav tom qab muag, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau hom Cold-rolled Steel khoom kom tau raws li cov neeg siv khoom xav tau.
Peb ua raws li cov neeg siv khoom-centric thiab hom-taw qhia kev lag luam lub tswv yim, thiab txuas ntxiv muab cov neeg siv khoom lag luam txhim khu kev qha thiab zoo heev thiab cov kev pabcuam.
Peb lub Hoobkas tau cog lus los txhawb nqa cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab zoo.
Txhua tus neeg ua haujlwm ntawm peb lub tuam txhab thiab txhua lub tuam haujlwm ua haujlwm ua ke los ua ke kev tswj hwm kev lag luam, kev tshaj lij thev naus laus zis, kev txheeb cais ntau thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Kev vam khom rau qhov zoo tshaj plaws thiab muaj txiaj ntsig zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg siv khoom.

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