Dab tsi yog carburant?
Muaj ntau hom carburizers, suav nrog cov thee, ntuj graphite, dag graphite, coke thiab lwm cov ntaub ntawv carbonaceous.Cov ntsuas lub cev rau kev soj ntsuam thiab ntsuas cov carburizers yog cov ntsiab lus melting, melting ceev, thiab ignition point.Cov ntsiab lus tshuaj lom neeg yog cov ntsiab lus carbon, cov ntsiab lus sulfur, cov ntsiab lus nitrogen, thiab cov ntsiab lus hydrogen.Sulfur thiab hydrogen yog cov khoom tsis zoo.Hauv qee qhov ntau, nitrogen yog qhov tsim nyog.Hauv kev tsim cov hlau cam khwb cia, cov carburizer nrog cov khoom zoo dua yog hais tias Qhov tseem ceeb tshaj plaws yog graphitized recarburizer, vim tias nyob rau hauv qhov kub thiab txias, cov pa roj carbon atoms tau teem rau hauv daim ntawv microscopic ntawm graphite, yog li nws hu ua graphitization.Carburizers tuaj yeem ua kom cov khoom siv hlau siv hauv casting, thiab paub txog kev siv tsawg lossis tsis muaj npua hlau.
Carburizer muaj nuj nqi:
Carburizer yog ib qho tseem ceeb raw khoom rau melting molten hlau nyob rau hauv ib tug induction rauv, thiab nws zoo thiab kev siv ncaj qha cuam tshuam qhov zoo ntawm molten hlau.Castings muaj qee qhov yuav tsum tau ua rau cov pa roj carbon monoxide, yog li carburizers siv los ua kom cov pa roj carbon ntau hauv cov hlau molten.Cov khoom siv hluav taws xob feem ntau siv hauv smelting yog npua hlau, cov khoom siv hlau, thiab cov khoom siv rov ua dua tshiab.Txawm hais tias cov pa roj carbon ntsiab lus ntawm npua hlau yog siab, tus nqi kuj siab dua li ntawm cov hlau seem.Yog li ntawd, kev siv cov recarburizer tuaj yeem ua kom cov khoom seem ntawm cov hlau thiab txo cov npua hlau, thiaj li txo cov nqi ntawm cov hlau castings.
Kev faib tawm ntawm carburizers:
Graphite recarburizer yog hais txog kev hloov pauv ntawm cov qauv molecular ntawm cov khoom siv carbon los ntawm kev kub siab lossis lwm txoj hauv kev, thiab muaj kev ua haujlwm tsis tu ncua.Hauv qhov kev npaj molecular no, qhov kev ncua deb ntawm cov pa roj carbon ntau dua, uas yog qhov zoo dua rau kev decomposition thiab tsim nyob rau hauv molten hlau los yog hlau.nuclear.Cov graphite recarburizers tam sim no nyob rau hauv kev ua lag luam feem ntau yog los ntawm ob txoj kev, ib qho yog cov khib nyiab ntawm graphite electrodes, thiab lwm yam yog cov khoom graphitization ntawm roj av coke ntawm 3000 degrees.
Coal-based carburizer yog cov khoom siv calcined nyob rau hauv qhov kub thiab txias siv anthracite ua raw khoom.Nws muaj cov yam ntxwv ntawm cov ntsiab lus siab ruaj khov, muaj zog oxidation tsis kam thiab cov ntsiab lus tsis tshua muaj teeb meem.Nws tuaj yeem siv los ua tus neeg sawv cev txo qis hauv cov txheej txheem smelting.Thaum lub sij hawm steelmaking txheej txheem ntawm lub arc rauv, coke los yog anthracite yuav muab ntxiv raws li lub carburizer thaum them.
