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| Development and Application of Mould Powder for Continuous Casting Slab of Martensitic Stainless Steel |
| YANG Jun,SHENG Jian-hua,LU Li-jun,GU Xue-hong |
| Stainless Steel Business Unit, Baoshan Iron and Steel Co., Ltd., Shanghai 200431, China |
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Abstract Due to the metallographic characteristics of the martensitic stainless steel, longitudinal crack was easily generated at wide-face and corner of slab during solidification process, which would seriously affect the production and grinding machine operating rate. Meanwhile, the slab quality was not improved owing to general mould flux in martensitic stainless steel. The design principle of mould powder with high basicity, low viscosity and high crystallinity was decided through study the relationship between basicity and CaF content of mould powder and the properties of viscosity and crystallinity. The domestic martensitic stainless steel slab mold flux was developed. As a result, and the degree of longitudinal crack was decreased by 30%.
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Received: 10 March 2011
Published: 20 February 2012
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2012, Vol. 47 
