材料成型及控制工程专业课程实验设计与实践——以《热处理原理及工艺》课程为例

Design and Practice of Course Experiment of Material Forming and Control Engineering Speciality——Taking Principle and Technology of Heat Treatment Course as an Example

课程实验作为实践教学环节的重要组成部分,在培养大学生的主观能动性和创新性方面具有不可或缺的作用。基于金属材料的组织、结构与性质之间的关系为核心内容,设计了本实验。采用金相显微镜技术,探讨了锌浴中添加的Mn含量和热浸镀时间对低碳钢热镀锌合金层厚度的影响。结果显示:当Mn含量达到0.5wt%、热浸镀时间为5min时,镀层获得最佳的减薄效果。教学实践表明,该设计性课程实验提高了学生发现问题、分析问题及解决问题的能力,有利于培养学生的创新意识和工程实践能力。

As an important part of practical teaching,the course experiment played an indispensable role in cultivation of college students＇ subjective initiative and innovation.This experiment was designed based on the relationship between the structure and properties of metal materials.The effects of Mn content in zinc bath and hot dipping time on the thickness of hot dip galvanized alloy layer on low carbon steel were investigated based on optical microscope.The results showed that the optimal effect of reducing thin of coating was obtained when the Mn content reached 0.5wt% and hot dipping time was up to 5min. Teaching practice revealed that this designing course experiment improved the ability of the students to discover problems, analyze problems and solve problems.This would be in favor of the cultivation of the students＇ innovative consciousness and engineering practice ability.