Process method for improving surface smoothness of molded surface of gas turbine blade

The invention aims to provide the process method for improving the surface smoothness of the molded surface of the gas turbine blade, which can improve the surface smoothness of the molded surface of the blade without damaging shot blasting traces on the molded surface of the blade. The method is characterized by comprising the following steps that firstly, the blade subjected to shot peening strengthening is installed on a blade six-axis linkage numerical control abrasive belt grinding machine, and numerical control polishing and grinding are conducted on a machining area of the blade through a nylon belt; and 2, vibration finishing is conducted on the blade obtained after numerical control polishing and grinding. 本发明的目的在于提供一种燃机叶片型面表面提高表面光洁度的工艺方法，其能够即不破坏叶片型面表面的喷丸痕迹又能够提高叶片型面表面的光洁度，其特征在于：包括以下步骤：步骤1、将喷丸强化后的叶片装在叶片六轴联动数控砂带磨床上用尼龙带对上述叶片的加工区域进行数控抛磨；步骤2、对数控抛磨后的叶片进行振动光饰。