Txawm tias qis carbon steels tsis teb rau quench hardening. … Txawm li cas los xij, tempering ntawm cov hlau no feem ntau tsis tas yuav tsum tau vim yog qhov kub siab heev Ms (kwv yees li 400◦C) thiab Mf kub, uas tso cai rau cov hlau no ua rau nws tus kheej tempering thaum quenching [3].
Yuav ua li cas ua kom cov pa roj carbon tsawg?
Case-hardening koom nrog ntim cov hlau tsis muaj cov pa roj carbon tsawg hauv cov khoom muaj cov pa roj carbon ntau, tom qab ntawd ua kom sov lub pob no kom txhawb cov pa roj carbon monoxide mus rau hauv saum npoo ntawm cov hlau. Qhov no tsim ib txheej txheej nyias ntawm cov pa roj carbon ntau dua, nrog cov ntsiab lus carbon maj mam txo qis los ntawm qhov chaw.
Koj puas tuaj yeem ua cov hlau tsis tshua muaj hlau?
hom carbon steel feem ntau siv yog cov pa roj carbon tsawg. Cov hlau no feem ntau muaj tsawg dua 0.25 feem pua cov ntsiab lus carbon. Peb tsis tuaj yeem tawv los ntawm kev kho cua sov (los ua Martensitic) yog li kev xyaum txias feem ntau ua tiav qhov no.
Koj puas tuaj yeem ua kom cov pa roj carbon tsawg los ntawm cua sov thiab quenching?
Thaum nws muaj tseeb tias tsuas yog cua sov thiab quenching tsis yog ib qho kev xaiv zoo los ua kom cov pa roj carbon tsawgsteels, tib yam tsis tas yuav muaj tseeb rau lwm txoj hauv kev hardening - uas yog carburizing. Carburizing yog txheej txheem ntawm diffusing carbon rau saum npoo ntawm cov pa roj carbon tsawg kom nce hardness.
Yuav ua li cas quenching ua rau qis carbon steel?
Quenching txo qis qhov txo qis hauv cheeb tsam los ntawm35-40%hauv cov hlau uas muaj 0.03-0.12% C. Lub hardness ntawm cov hlau raws li xa tuaj nce me ntsis nrog cov concentration ntawm carbon (HB 50-150). quenching ua rau kom lub hardness (los ntawm HB 130 mus rau 190) nrog nce concentrations ntawm carbon.
