Narrow-gap adjustable device and cosmetic welding adjustable device for improving bearing capacity of butt joints

Abstract

The invention improves a narrow-gap adjustable device and a cosmetic welding adjustable device for improving the bearing capacity of butt joints, which belong to the field of a welding technique and can acquire high-quality butt joints with good bearing capacity. A fastener is used for axially pressing and fixedly mounting a group of annular sheets with different thicknesses and two wheel rim bodies on a shaft sleeve; and the two wheel rim bodies and the group of annular sheets with different thicknesses between the two wheel rim bodies are arranged coaxially, and the surface profile of the integration of the wheel rim bodies and the annular sheets is matched with the surface shape of the weld reinforcement of the butt joints. The narrow-gap adjustable device is convenient in operation, and has the advantages of high efficiency, high adaptability and the like; and the device with the adjustability can shape the butt joints which have different thicknesses and are made of different materials during welding. Under the sequential action of the narrow-gap adjustable device and the cosmetic welding adjustable device, butt joints with less weld defects, fine grains, low welding residual stress, desired shape and size, and high bearing capacity can be manufactured.

Description

Narrow gap adjustable device and cover welding adjustable device to improve the bearing capacity of butt joints technical field The invention relates to an adjustable device for improving the bearing capacity of a butt joint, which belongs to the technical field of welding. Background technique During the welding process, due to the local metal melting and rapid cooling during the formation of the weld, the material of the weld area changes, and at the same time, the weld area often produces large residual tensile stress and is prone to defects such as pores and microcracks, which make the weld area Often become the weak link of the joint. Therefore, the purpose of improving the bearing capacity of the joint can be achieved by increasing the bearing capacity of the weak zone of the weld. For thick plate welding, narrow gap, multi-layer and multi-pass welding are generally used. The surface of the weld is prone to defects such as pores, and the defects close to the surfa...

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Problems solved by technology

Generally, the required joint size is obtained by machining. Considering that the machining efficiency is low and it is easy to cause some potential surface cracks and other deficiencies, therefore, during the welding seam forming process, welding impact rolling should be carried out to improve the butt joint. Joint bearing capacity, during the welding process, a specially designed and adjustable device is used to act on the weld metal of the butt joint, but there is no provision in the prior art for improving the bearing capacity of the butt joint (joint with reinforcement) special equipment

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