Optimization of Welding Modes for High-Strength Low-Alloy Domex 700 Steel
Journal Title: Український журнал із машинобудування і матеріалознавства - Year 2017, Vol 3, Issue 2
Abstract
The microstructure and hardness of the weld joints of DOMEX 700 steel were investigated. As a result, the optimization of the parameters of robotic arc welding in the environment of protective gases was carried out taking into account the size of the energy per unit length. The optimum modes of welding were determined. The size of the deterioration area, where there is a decrease in hardness in comparison with the main metal, for a thickness of 6 mm is 2.36 mm, and for a thickness of 3 mm is 1.51 mm. The parameters of the robotic welding process in the arc mode in the environment of protective gases for the investigated thicknesses of the DOMEX 700 steel were recommended. As a result, the energy-saving conditions for welding performing were achieved ensuring the required technological strength.
Authors and Affiliations
Andrii Dzyubyk, Volodymyr Palash, Ivan Khomych, Stanislav Hrynus
Method for calculating the operating life of a steam pipe with a creep-fatigue crack near a weld joint
A method for determining the period of sub-critical growth of a semielliptical creep-fatigue crack in the internal surface of a pipe wall of the steam pipeline is proposed. The crack is located near the ring weld in the...
Computation of Shaping Errors for Fine Boring of Smooth and Stepped Holes
On the basis of precision theory we propose the method of computation of static and dynamic errors of cross-sectional shapes of holes in fine boring of smooth and stepped holes. We consider particular cross-sectional sha...
Cylindrical control of holes of tube details manufactured by deforming broaching
This work is devoted to the issues of processing holes in different thickness of tubular billets great length deforming broaching. The urgency of this problem is substantiated. The results of studying the regularities of...
Asymptotic method in investigation of complex nonlinear oscillations of elastic bodies
The main provisions of the methodology of the study of complex oscillations of elastic bodies are outlined. Its main idea is as follows: a) on the basis of empirical studies, the change of the basic parameters of some fo...
Optimization of Structure of Sorting Vibratory Separators
The problem of substantiation of operational efficiency of vibratory separators designed on the basis of vibratory hopper feeders with electromagnetic vibrations exciters and with conic working bowls is considered in the...