Heat and vibration combined aging device for residual stress homogenization

Abstract

The invention provides a heat and vibration combined aging device for residual stress homogenization. The device consists of a vibration aging system (A) and a heat aging system (B), wherein most of the vibration aging system (A) is accommodated in bottom supports (11), an outer cover (12) and heat-insulating boards (13) of the heat aging system (B), bottoms of the three bottom supports (11) are contacted with the upper surface of a bottom fender (8) of the vibration aging system (A), the vibration aging system (A) and the heat aging system (B) are relatively positioned through adjustment of equal distances between the three bottom supports (11) and limiting rods of the bottom fender (8), gaps of combined parts of the two systems can be filled with heat-insulation cotton or heat-insulation felt for heat insulation. The device realizes residual stress homogenization by mainly using the heat and vibration combined action, and heat aging, vibration aging as well as heat and vibration combined experiments can be finished separately to a certain extent. The device has important application values for residual stress homogenization technologies in scientific research and actual production.

Description

technical field [0001] The invention discloses a thermo-vibration composite aging device applied to the homogenization of residual stress, more particularly a device capable of realizing thermal aging, vibration aging and emphasizing composite aging. The invention belongs to mechanical design, production and application technical field. Background technique [0002] With the steady development of the national economy and the needs of scientific and technological progress, the advanced manufacturing field represented by aerospace has higher and higher requirements for product performance. However, the large overall thin-walled structural parts used in aircraft often have excessive processing deformation during machining, which directly leads to adverse consequences such as workpiece scrapping and construction delays; , will also produce large service deformation, which directly affects the working state and service life of the parts; and aerospace critical parts are expensiv...

AI Technical Summary

Problems solved by technology

However, vibration aging uses vibration as energy input. From a mechanical point of view, it is bound to be affected by parameters such as excitation force, excitation frequency and excitation time. There are some problems in the actual production and application process.

For example, the level of residual stress homogenization of aluminum alloy thick plates after vibration aging cannot meet the requirements. The reason is that vibration aging produces specific vibration shapes and dynamic stresses under specific working conditions, which have a significant effect on specific areas, but it is difficult to achieve ideal The residual stress is fully homogenized, and in order to ensure that the aging parts are not damaged, it is necessary to limit the parameters such as excitation force, excitation frequency and excitation time within a reasonable range

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