Qhia Txog Cov Txheej Txheem Kev Kho Hniav Kub Ntawm Cov Thawv Hlau Phaj

Kev kho cua sov txheej txheem ntawm cov thawv steel phaj. Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob sai ntawm kuv lub teb chaws kev lag luam petrochemical, ntau yam txheej txheem petrochemical thiab cov cuab yeej siv tau hloov kho ib ntus. Thaum lub sij hawm tus txheej txheem no, lub liquefaction, sib cais, cia thiab kev thauj mus los ntawm ntau yam gasification khoom kuj yog siv los ua ib qho tshwm sim.
Raws li cov cuab yeej tseem ceeb uas muaj cov khoom siv hluav taws xob qis qis, lub siab lub nkoj steel phaj yog nyob rau hauv kev xav tau ntawm kev lag luam. Qhov no kuj tau ua rau muaj kev nce ntxiv hauv kev thov rau steel phaj rau cov hlab ntsha siab. Txawm li cas los xij, nrog rau kev siv ntau dua ntawm cov hlab ntsha steel phaj, kuj tseem muaj qhov sib txawv ntawm qhov yuav tsum tau ua rau cov phaj steel siv sib txawv, uas ua rau muaj kev xav tau ntau dua rau cov thawv steel phaj manufacturers. Cov txheej txheem kev kho cua sov yog ib qho tseem ceeb ntawm cov txheej txheem kev kho mob hauv cov txheej txheem ntawm cov hlab ntsha steel phaj. Tsuas yog tom qab kev kho cua sov sib txawv tuaj yeem ua cov qauv thiab cov khoom ntawm lub nkoj steel daim hlau hloov, thiab cov hlau phaj siv los tsim cov hlab steel daim hlau muaj ntau thiab ntau dua kev ua tau zoo. Tempering thwmsim ntawm qhov sib txawv ntawm qhov kub thiab txias tau ua tiav ntawm qhov kev sim quenched thawv steel daim hlau siv lub qhov cub kub kub, thiab cov microstructure thiab mechanical zog ntawm tempered thawv steel daim hlau tau soj ntsuam. Cov txiaj ntsig kev sim qhia tau tias tom qab quenching, cov qauv hauv cov hlau yog lath martensite. Tom qab tempering, cov qauv hauv cov hlau hloov mus rau hauv tempered sorbite thiab ferrite. Raws li qhov kub thiab txias nce, carbonization nyob rau hauv cov qauv Raws li cov khoom txuas ntxiv los nag, cov ferrite loj hlob tuaj, lub zog ntawm cov phaj steel kuj txo qis, thiab qhov cuam tshuam toughness yog qhov zoo dua. Tom qab quenching, tus nqi hardness ntawm steel phaj yog siab, thiab tom qab tempering, tus nqi hardness poob ho, thiab txo qis los ntawm lub sij hawm mus rau lub sij hawm nrog qhov nce ntawm tempering kub. Txhawm rau kom tau txais cov khoom zoo txhua yam, qhov ntsuas kub yuav tsum yog 630-680 degree .