回归法SG磨具配方设计

Computer aided formula design of SG abrasive tool by regressive method

本文论述了采用回归法进行SG磨具配方设计的数学模型建立、设计方法步骤等内容,也介绍了SG磨具制备的工艺。本课题采用低温陶瓷结合剂,通过对磨料、结合剂等原材料的分析,制定了磨具制备的工艺和试验点配方,采用回归法配方设计,得出结合剂、糊精粉、水玻璃、成型密度四个因素与磨具硬度的回归方程,从而设计出系列的SG陶瓷磨具砂轮系列配方。采用10%SG和90%WA混合磨料,采用低温结合剂(30%微晶玻璃,30%硼玻璃,40%长石与粘土)的耐火度为850℃。通过四个试验点,建立了磨具硬度与结合剂、水玻璃、糊精份含量的回归方程,并对相关关系曲线进行了分析。本课题采用MS Excel XP的规划求解工具包进行数据分析和曲线绘制及分析。

This paper mainly introduced the method of formulae design for the grinding wheel with micro-crystal corundum, which is of 10% of the abrasive grains, the other 90% is white fused alumina. The regressive method included mathematics model, experimental way and steps. Meanwhile, the manufacturing technique of SG （ Sol-Gel for short） grinding wheel was introduced too. The bond of lower temperature refractory played the main role in this research, it consisted of ceramics glass （30%） ,clay and feldspar（40% ） and boron glass（ 30% ）. According to the result of experimental we figured out the regressive equations about the percent contents of adhesion powder, dextrin, retouch liquid, molding density with nominal hardness degree. This is a value that calculated from the hole- scale into a continuous value by a mathematics expression. Then using the regressive equations we can figured out the series formulae of SG abrasives from G to V which corresponding the natural numbers 0 to 13. We can infer from the figures of regressive equations that the hardness of grinding wheel increases along with the percent contents of A, D, R, and γ.