Manufacturing method of thin-wall variable-curvature hollow blade

Abstract

The invention discloses a manufacturing method of a thin-wall variable-curvature hollow blade. The method is characterized by being a method for manufacturing the thin-wall variable-curvature hollow blade according to a profile curvature radius and layer number adjusting laser power. The rule of the influence of profile curvature radius change of the blade on a molten pool temperature field is found so as to find a molten pool temperature field distribution rule corresponding to different curvature radiuses. A method for stabilizing the temperature of a molten pool by changing laser power is provided so as to obtain the rule of the change of laser power along with the curvature radius. The change rule is combined with power change along with layer number and laser power on any layer and any curvature are found, so that a thin-wall blade sample with uniform wall thickness can be molded according to the change rule at a stable molten pool temperature.

Description

technical field [0001] The invention relates to the manufacturing fields of laser surface cladding and surface repair of vulnerable parts, in particular to a manufacturing method of complex thin-walled parts and solid parts with large curvature radius changes in laser metal direct forming, and in particular to a method for adjusting laser beams according to contour curvature radius Method for manufacturing thin-walled hollow blades, Background technique [0002] Laser metal forming technology is an advanced manufacturing technology developed on the basis of laser cladding combined with rapid prototyping technology. Based on the "discrete-stack" forming principle, first establish the 3D model of the target part, then divide the 3D model slice into a series of 2D planes, plan a reasonable laser scanning path according to the 2D plane profile information, and then transform it into CNC The operation instructions of the workbench finally realize the direct accumulation and form...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of uneven accumulation of cladding layer wall thickness in the process of laser metal forming thin-walled blades, and provides a method for adjusting the laser power according to the radius of curvature of the hollow blade contour to control the temperature of the cladding layer molten pool, and then Improving the Wall Thickness Accuracy of Laser Metal Forming Thin-walled Blades

Images