阳极铜浇铸模具修复剂的制备与性能

Preparation and properties of anode copper casting mold repair agent

采用废镁铬砖、氧化铝、碳化硅、磷酸二氢铝为原料制备阳极铜浇铸模具修复剂材料,通过力学试验机、扫描电镜(SEM)、热重—差热(TG-DTA)、X射线衍射(XRD)分析等手段分析阳极铜浇铸模具修复剂材料的力学性能、微观形貌、耐热性能及晶型变化。结果表明,固体物料配比为30%镁铬砖、30%氧化铝、40%碳化硅,磷酸二氢铝与固体物料比值(液固比)为0.6∶1条件下得到的阳极铜浇铸模具修复剂材料的表面较为平整,无明显气泡产生,力学性能好,可使模具寿命提高39.89%。

The anode copper casting mold repairing material was prepared by using waste magnesia chrome brick, alumina, silicon carbide and dihydrogen aluminum phosphate as raw materials. The mechanical properties, microstructure, heat resistance and crystal form of the anode copper casting mold repairing material was analysized. through mechanical testing machine, scanning electron microscope (SEM), thermogravimetry-differential heat (TG-DTA), X-ray diffraction (XRD) The results show that the anode material copper casting mold repaired under the condition of solid material ratio of 30% magnesia chrome brick, 30% alumina, 40% silicon carbide, aluminum dihydrogen phosphate and solid material ratio (liquid-solid ratio) of 0.6∶1 exhibits smoother surface, no obvious bubbles, and the mechanical properties are good, which can increase the life of the mold by 39.89%.