Influence of 0~6% BaO content on melting temperature
crystalline temperature and rate of mould pow- der with main ingredient 31.60CaO
27.20SiO₂
10.48C
4.85Al
2
O
3
and basicity 1.16 for casting Q235B
SS400 etc medium carbon steels by CSP flow sheet at Baotou Steel has been studied. Test results showed that added ≤2% BaO in test mould powder was available to improve lubricant and vitreous performance of flux and restraine precipitation of crystals
and as BaO content was ≥4%
the precipitation of crystals was completely restrained to get optimizing vitreous flux films.