Dab tsi yog qhov cuam tshuam ntawm anthracite carburizer ntawm smelting?
Aug 26, 2024Tso lus
Txawm hais tias nws yog anthracite carburizer, lossis lwm hom carburizer, nws tau yeej kev siv dav hauv khw muag khoom. Vim li cas lub carburizer tuaj yeem yeej qhov kev lees paub ntawm ntau tus neeg siv khoom, cov hauv qab no feem ntau yuav qhia txog kev cuam tshuam thiab kev siv ntawm anthracite carburizer rau smelting.
Los ntawm kev siv cov carburizing tus neeg sawv cev, cov ntsiab lus carbon tuaj yeem nce ntxiv, graphite core ntawm cov hlau kub tuaj yeem nce ntxiv, thiab cov hmoov tshauv tuaj yeem txo. Ntxiv cov pa roj carbon monoxide yog qhov kev ntsuas tsim nyog los tiv thaiv lossis txo qhov kev xav ntawm shrinkage. Vim lub luag hauj lwm ntawm graphitization expansion nyob rau hauv lub solidification txheej txheem ntawm kub hlau, zoo graphitization yuav txo tau cov nyiam ntawm kub hlau shrinkage. Ib txheej ntawm 0.2-mm carburizer rau saum npoo ntawm cov hlau kub tuaj yeem ua lub luag haujlwm ntawm "kev cais tawm" los tiv thaiv qhov txo qis ntawm cov pa roj carbon monoxide hauv qhov cub.
Tib cov tshuaj muaj pes tsawg leeg siv sib txawv melting links, sib txawv compositions thiab ratios. Lub metallurgical zoo ntawm cov hlau kub yog txawv kiag li, thiab cov nyhuv carburizing zoo dua tau txais. Lub tshuab hluav taws xob siv cov tshuab carburizing. Kev cuam tshuam ntawm anthracite carburizer rau melting feem ntau muaj peb yam:
1. Cov hlau kub carbonization tshuab tuaj yeem txhim kho lub zog graphite hauv cov theem melting, tshwj xeeb tshaj yog nyob rau theem melting ntawm lub cub hluav taws xob. Ntxiv cupola hauv smelting hlau carbide tuaj yeem txhim kho lub sijhawm ntev nucleation ntawm graphite tov thiab txo cov oxidation ntawm cov hlau kub.
2. Cov pa roj carbon emissions ntau dua yog cov lus teb zoo tshaj plaws los tiv thaiv lossis txo cov kev xav ntawm kev lag luam kom txo qis. Vim lub luag hauj lwm ntawm graphite nyob rau hauv lub solidification txheej txheem ntawm nthuav dav hlau kub, zoo graphitization nyhav kom txo tau lub shrinkage tus nqi ntawm kub hlau.
3. Raws li cov txheej txheem siab carbon cov ntsiab lus, txhawm rau kom tau txais cov hlau cam khwb cia grey nrog lub siab tawv, cov txheej txheem smelting tuaj yeem xaiv cov txheej txheem ua tiav ntawm tag nrho cov seem steel thiab carburizing tus neeg sawv cev, kom cov hlau kub yog yooj yim dua thiab ntshiab, thiab kev ua tau zoo. ntawm cov khoom siv casting yog siab.
Nyob rau hauv cov txheej txheem smelting, cov ntaub ntawv tsis muaj roj yuav tsum tau xaiv los tiv thaiv kom tsis txhob muaj dej ntau dhau. Forehearth roj los ntawm cov khoom seem hlau yog siv los tsim cov pa taws thiab coils. Cov neeg xav tias cov hlau yog siab dhau lawm thiab cov khoom siv hauv ob sab phlu. Qhov tseeb, qhov no feem ntau yog vim cov roj ntau hauv cov ntaub ntawv hlau smelting, uas yooj yim heev ua rau carbon deposition. Nyob rau hauv qhov txias carbon deposit ib feem ntawm tus nqi, txawm hais tias muaj ib tug insulating txheej deposit, vim hais tias tus nqi yog tsis tiav sintered, thaum cov carbon deposit yog generated, nws yuav ua rau to, cuam tshuam rau lub cub tawg grounding system, thiab ua rau coil sparks. . Nws yog feem ntau ntseeg tias qhov kub ntawm cov hlau kub ntau dua, lub sij hawm ntev dua cov tshuaj tiv thaiv, thiab qhov siab dua cov pa roj carbon nqus.
Txawm li cas los xij, qhov tseeb tuaj yeem thim rov qab. Nyob rau hauv induction tswj rauv, lub ultra-low kub carbonization thiab siab kub silicon ntsiab lus yog nce, uas yog, nyob rau hauv high kub, tsis tsuas yog cov ntsiab lus ntawm carbon yog tsis nce, tab sis cov ntsiab lus carbon yog txo. Qhov sib npaug ntawm kev khiav hauj lwm kub ntawm cov ductile casting yog li 1450 ° C ± 20 ° C, thiab tus nqi ntawm grey cam khwb cia hlau yog li ntawm 1400 ° C ± 20 ° C. Cov oxidation ntawm carbon yuav muaj zog nyob rau hauv kub hlau saum toj no ruaj khov equilibrium kub. Vim yog cov tshuaj tiv thaiv hauv cov hlau kub, cov pa roj carbon oxide raug hlawv tas li, thiab cov silicon raug txo kom hlawv. Lub sijhawm no, tus neeg sawv cev carburizing tuaj yeem muab ntxiv rau saum npoo ntawm cov hlau kub kom ua tiav qhov sib npaug ruaj khov ntawm kev nce cov pa roj carbon thiab txo cov pa roj carbon hauv cov hlau kub.
