Automatic repairing and remanufacturing method of turbine blade

Abstract

The invention discloses an automatic repairing and remanufacturing method of a turbine blade and relates to the technical field of repairing and remanufacturing of turbine blades. The automatic repairing and remanufacturing method comprises the technological steps of scanning an original blade, establishing a three-dimensional model, conducting reverse modeling through a computer, planning a cutting area and a cutting path, conducting cutting, scanning a gap, conducting reverse modeling, conducting gap overlaying planning, conducting printing overlaying, conducting heat treatment, conducting nondestructive examination, conducting machining and conducting scanning. The determined blade is scanned through a robot 3D scanning system, the 3D model of the blade is obtained through software treatment, the to-be-cut area and the cutting path are defined on the model, and then the damaged portion is completely removed or an area to be manufactured is established. By the adoption of the technical scheme, the problems of water erosion damage repair of the blade, repair and upgrading of the blade and the like can be rapidly and efficiently solved at a high quality; and compared with traditional machining, the automatic repairing and remanufacturing method simplifies the machining technology, greatly improves the on-site machining efficiency of the blade and determines a new direction forefficient and intelligent repairing and remanufacturing for the damage of the turbine rotor blade.

Description

technical field [0001] The invention relates to the technical field of repairing and remanufacturing of steam turbine blades, in particular to an automatic repairing and remanufacturing method of steam turbine blades. Background technique [0002] Water erosion of steam turbine blades has always been a major technical problem for those skilled in the art. Once the blades are damaged by water erosion, it will not only increase the energy consumption of the unit, reduce efficiency, but more importantly, the safety risk will increase dramatically. There are mainly two treatment methods for the current water erosion of steam turbine blades: one is to replace the steam turbine blades, but the cost of this method is very high; the other is to repair or remanufacture. [0003] At present, the on-site repair and remanufacturing of the last stage blade of the steam turbine mainly refers to the repair, and it is also mainly carried out manually according to the relevant national stand...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problem that the on-site repair and remanufacture of the existing steam turbine blades are difficult, the purpose of the present invention is to provide an automatic repair and remanufacture method for the steam turbine blades, which aims at adopting robot automatic cutting, 3D printing and post-weld heat treatment and other links to realize the cutting and remanufacturing of the damaged blades. Through the steps of each link, the problems of water erosion damage repair of blades and blade repair and upgrading can be solved quickly, efficiently and high-quality, and the removal of blade defects and welding are unified. It is a simple and efficient method for reliable repair and remanufacturing of damaged blades