Oxygen tsis muaj tooj liabhais txog cov tooj liab ntshiab uas tsis muaj oxygen lossis ib qho deoxidizer residue. Hauv kev tsim thiab tsim cov anaerobic tooj liab pas nrig, cov txheej txheem anaerobic tooj liab yog siv los ua cov khoom siv rau kev tsim khoom thiab casting. Qhov zoo ntawm cov pa oxygen dawb tooj liab pas nrig ua los ntawm cov khoom zoo kuj zoo heev.
1. kov yeej cov kab nrib pleb
Cov txheej txheem ntawm kev txo qhov kub ntawm gradient ntawm phab ntsa casting yog ib txoj kev zoo dua tsim nyog them rau. Cov pwm hlau yog siv los ua qhov zoo li, cov hlau pellet xuab zeb yog siv los ua cov av nkos, thiab cov av nkos yog txuas nrog cov kua dej. Cov nyhuv ntawm overcoming lub casting tawg yog pom tseeb heev.
2. Argon roj tiv thaiv casting
Vim tias tsis muaj pa oxygen tooj liab muaj lub siab nyiam ntawm cov pa oxygen thiab kev tshoov siab, kev tiv thaiv yuav tsum tau ua rau cov kua tooj liab thaum nws tawm hauv qhov cub thiab nchuav. Nitrogen thiab argon roj tuaj yeem siv tau. Nrog kev tiv thaiv roj argon, cov ntsiab lus oxygen ntawm castings yuav luag tsis nce los ntawm txoj kev kaw pouring.
3. Kev xaiv xim
Rau cov pa oxygen dawb tooj liab, nws yog qhov zoo dua los siv zirconium xim los yog tshuaj tsuag acetylene nplaim dub ntawm zirconium xim. Kev xyaum tau ua pov thawj tias qhov chaw casting ntog nrog cov xim no yog du, tsis muaj cov paib, thiab cov pa luam yeeb dub muaj deoxidation.
4. Kev siv hlau hom kub
Kev siv kub ntawm cov pwm hlau muaj qhov cuam tshuam rau qhov tawg, qhov ntom ntom, nto tiav thiab subdermic pores ntawm cov casting. Nws tau raug pov thawj los ntawm kev xyaum hais tias qhov kev siv kub ntawm cov hlau pwm ntawm pouring oxygen-dawb tooj liab yog zoo dua tswj ntawm txog 150 ℃.
5. Cov txheej txheem ntsuas
Lub casting ntawm oxygen dawb tooj liab yog qhov nyuaj dua, thiab lwm yam txheej txheem yuav tsum tau txais kev pab, xws li kev tswj ntawm kev nrawm, kev tsim cov txheej txheem pouring, casting solidification, thiab lwm yam. Lub hauv paus ntsiab lus ntawm non-ferrous hlau casting tuaj yeem siv tau thiab cov yam ntxwv ntawm cov casting nws tus kheej tuaj yeem ua ke nrog kev xaiv tsim nyog ntawm kev ntsuas kev siv tshuab.
Post lub sij hawm: Nov-23-2022