Magnesium Tuag Casting

(1) Thawj theem yog theem pib, uas feem ntau ntxiv aluminium thiab zinc rau magnesium, uas yog, Mg-A1-Zn series alloy. Lub zog tensile ntawm cov hlau no zoo ib yam li cov cam khwb cia txhuas alloys. Tuam Tshoj lub ZM5, lub tebchaws United Kingdom L121 thiab lub tebchaws United States of America's AM80A yog nyob rau hauv no hom ntawm alloy, lub ntsiab ntxiv ntsiab yog txhuas, thiab zinc cov ntsiab lus yog tsawg, feem ntau vim hais tias cov zinc ntsiab lus yog nce, prone rau micro-porosity. (2) Qhov thib ob theem yog ib theem kev txhim kho ntxiv zirconium rau magnesium, thiab cov zirconium uas muaj alloys yog Mg-Zn-Zr, Mg-RE-Zr thiab lwm yam. Lub luag haujlwm tseem ceeb ntawm zirconium hauv magnesium alloy yog ua kom zoo dua cov nplej ntawm magnesium alloy, txhawm rau txhim kho cov txiaj ntsig ntawm magnesium alloy, thiab ua rau magnesium alloy muaj kev qaug zog zoo thiab tsis tshua muaj kev cuam tshuam. Qhov tsis zoo tseem yog vim lub sijhawm crystallization yog qhov dav, uas yog qhov ua rau micro-porosity thiab kub tawg. Yog li ntawd, feem ntau siv tuag-cam khwb cia magnesium alloy Mg-Al tsis muaj zirconium. Tsis tas li ntawd, txhawm rau txhim kho kev nkag siab ntawm magnesium alloys ntawm qhov kub thiab txias, magnesium alloys nrog lub ntiaj teb tsis tshua muaj cov ntsiab lus tseem ceeb tau tsim. (3) Qhov thib peb theem yog ntxiv nyiaj rau magnesium alloy nyob rau hauv kev txhim kho theem. Nyiaj alloying tuaj yeem txhim kho qhov kev laus zog, txhim kho qhov kub thiab txias zog thiab nkag siab ntawm magnesium alloy, tab sis txo cov corrosion kuj ntawm cov hlau.