| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: investment contains following components wt %: chrome-bearing material - basis, quartz-bearing material 28-32, black - 0.5-1. In the capacity of chrome-bearing material it is used enriched chrome-bearing material, in which content of admixtures of oxides is not more than, wt %: MgO 13.1, SiO2 1, CaO 0.1. ^ EFFECT: there is provided fluidity increasing of investment, reduction of bridging and sintering ability of mixture, unimpeded precipitation from ladle channel. ^ 1 ex |
