MA-1型、MA-2型多元变质剂是武汉华中理工大学最新研究的新型铸铁专用孕育剂,该产品的最大特点是工艺先进,适用于复杂薄壁高强度灰口铸铁和高韧性铸态球铁的孕育处理。 1.MA-1型孕育剂用于铸态球铁孕育处理,可使壁厚3mm铸件的铁素体量达到85%以上。其孕育方法分为炉前孕育、转包孕育、浇注随流孕育,孕育剂用量为0.3～0.5%,炉前采用粒状、转包与随流使用粉状孕育剂。经孕育处理的产品球化等级为1～2级,抗拉强度为47～52(kg/mm~2),延伸率为14～19%、基体组织强度含铁素体量为75～85%,硬度值在国家标准内。 2.MA-2型孕育剂既适应高强度灰铸铁,也适应于铸态高强度球铁处理。对灰铸铁进行孕育处理, MA-1, MA-2 multi-modifier is a new type of special inoculant newly researched by Wuhan Huazhong University of Science and Technology. The most outstanding feature of this product is its advanced technology. It is applicable to the complex thin-wall high strength gray cast iron and high toughness as-cast Ductile iron breeding treatment. 1.MA-1 type inoculant used for cast iron dumbbell processing, the wall thickness of 3mm ferrite can reach 85%. The breeding method is divided into precooking, subcontracting birth, pouring flow with the birth, the amount of inoculant 0.3 ~ 0.5%, before the furnace granular, subcontracting and flow with powder inoculant. After gelation treatment, the grade of spheroidization is 1 ~ 2, the tensile strength is 47 ~ 52 (kg / mm ~ 2), the elongation is 14 ~ 19%, the matrix strength is 75 ~ 85% , Hardness value in the national standard. 2. MA-2 inoculant both adapt to high-strength gray cast iron, but also to cast high-strength ductile iron treatment. Gray iron for breeding treatment,