Method for melt deposition of composite cladding layer through double-cylinder synchronous powder feeding based on 30CrMnSiA steel

The invention provides a method for melt deposition of a composite cladding layer through double-cylinder synchronous powder feeding based on 30CrMnSiA steel. The method includes the steps that alloypowder which comprises 316 austenitic stainless steel metal spherical powder and WC metal spherical powder is selected; a to-be-cladded workpiece is preheated, wherein the preheating temperature is 500-690 DEG C; and laser cladding process parameters are set, laser cladding is conducted on the surface of the to-be-cladded workpiece, and the composite cladding layer is formed. According to the method, a high-energy density laser beam with better directivity, coherence and brightness is input as energy, so that rapid cooling and rapid heating in the whole processing process are realized, and micro-metallurgical cladding modification is realized on a 30CrMnSiA steel base material. 本发明提供一种基于30CrMnSiA钢的双筒同步送粉熔化沉积复合熔覆层的方法，所述方法包括：选取合金粉末，所述合金粉末包括316奥氏体不锈钢金属球形粉末和WC金属球形粉末；对待熔覆工件进行预热，预热温度为500-690℃；设定激光熔覆工艺参数，对待熔覆工件表面进行激光熔覆，形