The reason of gas-hole defects occured in steel casting for molding eroduction line was analyzed.

结合多年的生产实践,分析湿型型生产线上钢件产生气孔的原,介绍预防钢件气孔的措施。

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.

分析行业型紧实率现有测试方法,提出机电一体化的型紧实率快速智能测试方法,并据此研制成功便携式型紧实率快速智能测试仪。