Abstract
A graphic-analytical method for determining temperature fields in the butt contour of a welded joint of a thin-walled tube with a base is presented. The method is based on the experimental data of temperature measurement at the reference points of the structure. The features of the elements of the welded joint made of carbon and high-alloy structural steels and the modes of electric arc welding were taken into account. A graphic-analytical method for determining temperature fields is proposed, which, on the basis of the theory of welding strains and stresses, makes it possible to determine temperature stresses and strains, both in the elements of the joint and in the contour of the weld.
Highlights
The creation of a welded joint is based on the melting of the auxiliary and base metal in the welding bath, provided by the arc gorenje with subsequent solidification of the weld [1]
Finding temperature fields by methods of thermal conductivity and heat transfer is not acceptable in many cases, since it is not always possible to take into account the heating conditions that are carried out in welding processes by a moving highly concentrated heat source [2]
A wide variety of forms of welded joints, grades of welded materials and welding methods do not allow us to apply any unified approaches and methods to determine the levels of temperature stresses arising under the influence of high temperatures localized in a narrow zone of the weld [3]
Summary
The creation of a welded joint is based on the melting of the auxiliary and base metal in the welding bath, provided by the arc gorenje with subsequent solidification of the weld [1]. In this case, there is a heat transfer and heat exchange with the environment. Special attention is paid to experimental methods for determining temperature fields in the technological cycle of welding of a welded joint. This paper presents the results of an experimental study of the distribution of temperature fields in the butt circuit of a welded joint made of carbon and high-alloy structural steels. The "shell – plate" welded joint was used, which is widely used in the construction of power apparatuses
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