Q1: Dab tsi yog kub - Rolling cov txheej txheem ntau lawm rau S3555J2H steel yeeb nkab?
Qhov kub - Rolling ntau lawm ntawm S355J2H steel siv feem ntau steelmaking, nruam casting, ua cua sov, muab dov, txias, thiab ua tiav. Ua ntej, cov hlau yog smelted nyob rau hauv ib converter lossis hluav taws xob rauv, qhov twg cov tshuaj lom neeg sib xyaw ua ke yog tswj tau kom tau raws li EN 10210 tus qauv. Nruam casting ces ua cov ntawv them nyiaj. Lub billet yog uniformly rhuab mus kwv yees li 1200℃nyob rau hauv ib tug cua sov rauv thiab tom qab ntawd nkag mus rau zeb rolling hla dhau. Tus tswj dov thiab tswj txias (TMCP) ua kom muaj cov noob qoob loo loj. Cov yeeb nkab yob ungegoes cua txias lossis nrawm kom txias los ua kom zoo dua qub cov khoom siv. Thaum kawg, nws undergoes wireshtening, qhov kom pom tseeb, thiab kev tshuaj xyuas sab nraud. Txoj kev no ua kom muaj zog ua kom muaj zog, muaj zog nruj, thiab qhov tseeb yog qhov tseeb, ua kom haum rau cov ntawv thov kev engineering.
Q2: Vim li cas cov tshuaj tswj tau muab tswj thiab tswj txias (TMCP) cov txheej txheem rau s355j2h steel yeeb xav tau?
TMCP yog qhov tseem ceeb thev naus laus zis rau kev ua kom zoo dua tus hlau lub micrubtructure los ntawm kev tswj qhov kub thiab txias thiab txias tus nqi. Rau s3555555555555555555 ... cov yeeb nkab steel, lub TMCP cov txheej txheem ua kom tau txais cov noob thiab cov hlawsite nplej, txhim kho lub zog thiab tawv thaum txo cov khoom siv keeb kwm. Ceev sai txias tom qab dov inibits noob loj hlob, ua rau ib qho kev sib txawv ntawm cov qauv lossis cov qauv zoo nkauj. Tus txheej txheem no tseem yuav txo qhov xav tau ntawm kev kho cua sov tom ntej, txo cov nqi ntau lawm. TMCP -} Nrhiav s355j2h kho cov yeeb nkab cov yeeb nkab tag nrho cov kev ua tau zoo dua qub, ua rau nws tsim tshwj xeeb rau kev siv vuam thiab cov ntaub ntawv sib zog.
Q3: Cov txheej txheem kev kho cua sov li cas rau S355J2H steel yeeb nkab? Lawv lub luag haujlwm yog dab tsi?
Cov kev kho mob kub tseem ceeb rau S355J2H steel yeeb muaj xws li ib txwm (n) thiab quenching thiab tempering (Q & T). Li qub, los ntawm cov cua kub rau saum toj AC3 txias, tshem tawm cov qauv kev ntxhov siab, homogenizes cov qauv, thiab txhim kho kev nruj. Quenching thiab tempering, siv rau cov ntawv thov kom muaj zog dua, ua raws li kev kub ntxhov, ua raws li los ntawm kev kub siab rau kev txhim kho thiab cuam tshuam. Rau cov ntawv teev tshwj xeeb, xws li tsawg -} qhov chaw ib puag ncig, kev pab ntxiv ntxiv yuav tsum tau ua kom nruj dua. Kev xaiv ntawm cov txheej txheem kev ua tshav sov nyob ntawm qhov kawg siv thiab kev ua tau zoo thiab feem ntau ua los ntawm cov hlau zeb ua raws cov qauv lossis cov qhua tuaj noj mov tshwj xeeb.
Q4: Qhov kev sim ua dab tsi (NDT) yog siv hauv kev tsim cov S3555J2H cov yeeb nkab?
Nondestructive Testing (NDT) rau S355J2H tus yeeb nkab suav nrog kev sim ultrasonic (et), eddy ntsuas kev sim (MT), thiab xov tooj cua sib nqus (RT). Siv tau siv los tshawb xyuas cov kev tsis xws sab hauv (xws li suav nrog lossis cov kab nrib pleb Cov qauv kev sim no tau ua raws li EN 10210 los xyuas kom meej tias cov yeeb nkab steel yog qhov tsis xws luag uas tuaj yeem cuam tshuam nws qhov kev ua tau zoo. NDT yog cov tub ntxhais kawm tau tswj hwm zoo, tshwj xeeb tshaj yog rau thauj {{}} cov kabmob qauv qauv thiab siab- qhov kev siv siab.
Q5: Yuav ua li cas qhov seem tsis muaj kev ua siab ntev ntawm S3555j3h Mipes tswj tau?
Qhov seem tsis muaj peev xwm ntawm s35555j en55 yuav tsum ua raws li en 10210, suav nrog cov uas rau txheej txheej sab nraud, phab ntsa thickness, ovality, thiab ntev. Thaum lub sijhawm cov txheej txheem ntau lawm, qhov ntev yog raug saib xyuas nyob rau hauv lub sijhawm tiag tiag uas siv precision dov mills, online laser ntawm cov gauges, thiab siv tsis tausab. Phab ntsa thickness sib txawv yog feem ntau tswj tau tsis pub dhau ± 10%, txawm hais tias qhov no yuav yog txoj hlua khi ntau rau high} precision apps. Osality tau kho los ntawm cov txheej txheem qeeb qeeb qeeb los xyuas kom meej tau li cas thaum lub rooj sib dhos tom ntej lossis vuam. Strensional tswj yog qhov tseem ceeb rau cov qauv nyab xeeb thiab yooj yim ntawm kev ua.
