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采用混料回归设计的方法对碱性自保护药芯焊丝配方进行了调整，获得了脱渣性优良的配方，并建立了药芯组成对脱渣率影响的数学模型。研究了自制和美国Lincoln公司的NR311几种自保护药芯焊丝药芯成分和熔渣微观结构及其脱渣性的关系。在不同的熔渣表面具有不同的微观结构，影响熔渣脱渣性的主要因素是决定着熔渣线胀系数和相变应力的白条状、白团状的方镁石，以及决定熔渣纵向拘束力的白球状、小块状方镁石。该研究对于指导碱性渣系配方设计具有重要意义。
Mixture regression design method was used to adjust the formula of basic self-shielded flux cored wire, and a good formula of slag removal was obtained. A mathematical model of the influence of the composition of the core on the slag removal rate was established. The self-made and the United States Lincoln Corporation NR311 several self-shielded flux cored wire core composition and slag microstructure and the relationship between the deslagging. Different microstructure of slag surface, the main factor affecting the slag slag removal is determined by the linear expansion coefficient of molten slag and phase transition stress of white, white clumpy periclase, and determine the slag longitudinal Bound white globular, small periclase. This study is of great significance to guide the formulation of alkaline slag system.