Nrog rau kev ua raws li lub teb chaws tus qauv tshiab rau rebar GB1499.2-2018, cov txheej txheem ib txwm ua kom muaj zog hlau los ntawm kev ntxiv cov manganese thiab silicon ntau cov nqi ntau dua. Txhim kho rebar zog los ntawm microalloying yuav yog ib qho tseem ceeb txoj kev loj hlob ntawm rebar. Ntawm cov ntsiab lus microalloying niobium, vanadium, thiab titanium, titanium yog tus nqi tshaj plaws -zoo, thiab nws cov kev ua haujlwm techno-economic zoo heev.
Titanium microalloyed steel feem ntau yog homogenized ntawm qhov kub siab tshaj 1250℃ua ntej dov los xyuas kom meej tias titanium feem ntau precipitates li TiN los yog nitrogen heev - nplua nuj Ti (C, N). Tsim nyog ua kom cov cua txias kom txo qis qhov dej nag tiag tiag tuaj yeem ua kom zoo dua cov nag lossis daus loj, yog li tiv thaiv kev loj hlob ntawm austenite nplej hauv lub xeev homogenized. Raws li lub hauv paus theoretical no, cov txheej txheem dov mus kom ze yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm Cov txheej txheem dov ua tiav suav nrog cov cua kub cua sov ntawm ib puag ncig 1290 degree, lub sijhawm cua sov ntawm 45 feeb, homogenizing rauv kub ntawm ib ncig ntawm 1180 degree, homogenizing lub sij hawm ntawm 32 feeb, dov kub ntawm 1000 ~ 1100 degree, thiab zaum kawg txias txaj kub ntawm 87 820 degree.
Los ntawm cov txheej txheem steelmaking ntawm converter → argon tshuab thiab xaim noj → nruam nruam nrog kev tiv thaiv tag nrho, nrog rau cov txheej txheem tswj dov thiab txias, kev tsim cov titanium microalloyed rebar tau ua tiav tiav. Raws li cov xwm txheej uas twb muaj lawm kub- dov ribbed rebar ntau lawm txheej txheem tseem tsis hloov, nws cov khoom siv kho tshuab, microstructure, thiab grain loj tag nrho raws li qhov yuav tsum tau muaj ntawm GB1499.2-2018. Piv nrog niobium-muaj rebar, tus nqi ib tuj ntawm steel yog txo los ntawm 30 yuan. Kev siv ntawm titanium microalloyed rebar ntau lawm tau muab lub tuam txhab nrog kev tshwj xeeb hauv microalloyed rebar thiab txhim kho nws cov kev sib tw tseem ceeb.
