Precise control method for electron beam welding deformation of rotor type parts

Abstract

The invention discloses a precise control method for electron beam welding deformation of rotor type parts, and belongs to the technical field of rotor type part electron beam welding. The method comprises the following steps of 1, designing an electron beam welding structure; 2, determining electron beam welding parameters; 3, designing an electron beam welding tool; 4, adjusting the material state of parts before welding; 5, determining part welding shrinkage; and 6, performing electron beam welding of the rotor type parts. For structural characteristics of rotor type parts, the technology starts from the aspects of improving parts rigidity, realizing rigid fixation, reducing residual stress, improving the distribution uniformity of residual stress and the like, corresponding technological measures are adopted, electron beam welding deformation precise control is realized, and compared with the prior art, by adopting the technology, the parts are high in connecting quality, low in cost, wide in technological adaptability and good in deformation control effect.

Description

Technical field [0001] The invention belongs to the technical field of electron beam welding of rotor parts, and in particular relates to a method for precisely controlling electron beam welding deformation of rotor parts. Background technique [0002] With the development of economy, there is more and more demand for aero-engines and gas turbines, and the manufacturing cost of rotor parts is extremely high. They are the core components of power turbine machinery such as aero-engines and gas turbines, realizing high-quality precision of such parts. Welding is its key manufacturing technology. [0003] At present, the connection technology of aero engine rotor parts includes bolt connection, inertial friction welding connection and vacuum electron beam welding connection. Among them, the strength of the bolt connection process is relatively low, which will cause the weight of the engine; the inertial friction welding process equipment cost is high, the tooling is complicated, and t...

AI Technical Summary

Problems solved by technology

Among them, the strength of the bolt connection process is relatively low, which will increase the weight of the engine; the inertial friction welding process has high equipment costs, complex tooling, and poor adaptability to parts; and the conventional electron beam welding process is difficult to meet the dimensional accuracy of new aero-engine rotor parts. Control requirements, resulting in poor part design and manufacturing compliance

[0004] The machining precision of rotor parts is high, and it is an ideal process to connect the rotors at all levels by electron beam welding. Due to the limitation of part structure and processing methods, the key parts such as webs and blades cannot be guaranteed by the method of reserve margin, while welding The existing inherent deformation often leads to the phenomenon that the size of the parts is out of tolerance

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