Stress relieving device for thin-wall cylindrical part

Abstract

The invention discloses a stress relieving device for a thin-wall cylindrical part. The stress relieving device comprises a placement block, wherein a first transmission cavity is formed in the placement block; a radial fixing mechanism is arranged in the first transmission cavity; and the radial fixing mechanism comprises a driving motor which is fixedly arranged on the inner wall of the rear side of the first transmission cavity. According to the stress relieving device disclosed by the invention, the thin-wall cylindrical part is radially fixed through a clamping block and an inflation pushing silica gel strip, so that clamping processing is convenient, and the problem of instability and deformation is completely avoided; and meanwhile, a method for relieving stress by cold and hot alternation is adopted for the thin-wall cylindrical part through a high-temperature pipe and a low-temperature pipe, so that the thin-wall cylindrical part generates pressure stress or tensile stress under continuous cold and hot alternation, the pressure stress or the tensile stress is counteracted with machining stress, the stress state of the part is reduced, the problems of large residual stress, easiness in deformation and the like in a processing process of the thin-wall cylindrical part are effectively solved, and the processing reliability and the product quality of the thin-wall cylindrical part are improved.

Description

technical field [0001] The invention relates to metallurgy-related fields, in particular to a stress relief device for thin-walled cylindrical parts. Background technique [0002] Metallurgy refers to the process and technology of extracting metals or metal compounds from minerals, and using various processing methods to make metals into metal materials with certain properties. For the processing of oil drilling workpieces, especially the processing of some cylindrical thin-walled workpieces, due to their large size, thin walls, and large processing volume, it is easy to generate large stress during processing. During the machining process, due to factors such as tool extrusion and fixture installation, tensile or compressive stress is caused on the surface of the part. During long-term placement or use, the stress is gradually released, and the parts are unstable and deformed. The problem of processing deformation has become one of the key problems restricting thin-walled ...

AI Technical Summary

Problems solved by technology

The aging temperature is low, the mechanical properties are basically unchanged, and the stress relief effect is not obvious; the stress relief temperature is high, the stress relief effect is relatively good, but the strength and elongation are reduced to varying degrees, which affects the performance of the material

Therefore, the traditional stress relief method cannot meet the processing requirements of some thin-walled cylindrical products

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