A continuous drive friction welding method for supercharger spindle

Abstract

The invention discloses a continuous driving friction welding method for a spindle of a supercharger. According to welding rotating speed, when the welding diameter phi of a part ranges from 25 mm to 35 mm, welding rotating speed v ranges from 0.5(m / s) to 0.6(m / s); when the welding diameter phi of the part ranges from 35 mm to 45 mm, the welding rotating speed v ranges from 0.55(m / s) to 0.45(m / s); when the welding diameter phi of the part ranges from 45 mm to 55 mm, the welding rotating speed v ranges from 0.4(m / s) to 0.5(m / s). According to welding pressure, when the welding diameter phi of the part ranges from 25 mm to 40 mm, the welding pressure P ranges from 600 MPa to 650 MPa; when the welding diameter phi of the part ranges from 40 mm to 55 mm, the welding pressure P ranges from 550 Mpa to 600 Mpa. According to welding time, when the welding diameter phi of the part ranges from 25 mm to 40 mm, the welding time t ranges from 5s to 10s; when the welding diameter phi of the part ranges from 40 mm to 55 mm, the welding time t ranges from 10 s to 20 s. According to the method, a set of welding parameters can be designed according to the welding diameter of the part, the part is welded according to the welding parameters, and specific welding strength requirements can be met.

Description

technical field [0001] The invention belongs to the manufacturing field of superchargers, and in particular relates to a continuous-drive friction welding method for a main shaft of a supercharger. Background technique [0002] The main shaft of the supercharger is the core part of the supercharger. When it is working, its speed often reaches tens of thousands or even hundreds of thousands of revolutions, which is a high-speed part. It is welded together by the turbine and the optical shaft, and then processed by machining. In order to meet its use requirements, the weld seam must reach a certain welding strength value. Among them, the turbine material is generally made of K18B with high high-temperature strength through casting, and the optical shaft material is generally 42CrMoA rod material that has been quenched and tempered. The thermophysical properties and high-temperature mechanical properties of these two materials are very different, and they are heterogeneous. Me...

AI Technical Summary

Problems solved by technology

Moreover, for friction welding of as-cast turbines and quenched and tempered structural steels with large differences in high-temperature performance, in order to obtain qualified welding quality, it is often necessary to carry out a large number of welding tests, so that the test cost and time cost are relatively high. High, not conducive to cost control

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