Ways to improve the quality of welded metal constructions
The problem of improving the quality of welded steel constructions is a multi-task, solution of which is considered in the following aspects: economic, socio-psychological, and scientific- technical. Economic approach should be realized in the modernization of production and the use of high technology. Socio-psychological approach should be resolved through the personal effectiveness motivation of workers. Technical approach is realized in the use of scientific achievements and discoveries. On the basis of studies conducted in the Moscow State University of Civil Engineering, experimental data on determining the dependence of residual welding stresses and deformations on the value of heat input at welding are presented. The paper shows that the reduction in the size of fillet welds in corner and tee joints makes it possible to reduce the amount of residual welding stresses and strains, and thereby to improve the quality and reliability of welded metal building structures. Allowances for sizes of I-shaped cross-section elements compensating residual weld deformations of shortening are given. Accounting for allowances, when producing welded structures, will improve the accuracy and therefore the quality of products.