Because of growing product in some Chinese iron and steel companies, load capacity of an involute gear decelerator connecting with a rolling mill is very short at present.

• 针对轧钢企业轧制产量逐年上升，与轧机相接的渐开线齿形齿轮减速器承载能力严重不足的现状，提出将减速器的渐开线齿形变为抗点蚀能力较强的双圆弧齿形。