The measuring method of sand compactability in laboratory is analyzed,and a fast measuring method is designed,and the intelligent instrument for fast measuring sand compactability are developed.

分析了铸造行业型砂紧实率现有测试方法,提出了机电一体化的型砂紧实率快速智能测试方法,并据此研制成功了便携式型砂紧实率快速智能测试仪。

In order to reduce the error in the calculation, this article raises a measure method to the radius of nonplastic circular arc which basis on the principle of geometry.

为了降低测量误差,提出了对非整形圆弧直径测量的方法。