Abstract: Wear and cavitations are major problems affecting safe operation in using agricultural machinery and pump. Of wear and cavitations erosion may cause not only damage of agricultural machinery and pump parts, but also deterioration of performance. On the basis of research on alloyed powder spray, material and technology on surface of cast iron and cast steel by laser cladding by using continuously adjustable transverse-flow CO₂ laser at 2 kW level with Ni-based powders. The properties of samples are tested with a vibratory rig. According to the test results, not only is the heat warp very little, but also the wear-resistant and cavitations-resistant properties of claded layer on cast iron and cast steel can be raised considerably.