New Approach for Modelling of the Welding Processes
The applying of new technologies is connected with considerable outlays to receive the optimal welding regimes, metallographic research of welding seams, joint quality control and other facilities, which can be considerable lowered, using modelling of the welding processes. We propose to use new approach for modelling – analogue modelling, which is based on process investigation, using logical functions. Some practical applying examples of the analogue modelling are offered in this paper. The analogue model of the heat input during resistance welding of wires with coating is described in detail. Using analogue modelling we can solve direct problems of thermal conductivity, it mean that we can predict temperature field, obtained as a result of influence of welding source of heat. The effectiveness of analogue modelling using is proven.
RESEARCH ON THE SURFACE COATINGS INFLUENCE ON FORMATION MECHANISM OF THE RESISTANCE WELDS
The goal of the work is the research of formation mechanism of the spot resistance welds in the case of copper wires with nickel and tin coatings. The existing approaches for investigation of the formation mechanisms of welds of wires with and without coatings are analysed. A new approach for modeling of welding joint formation is offered. The analog model of the heat input during resistance welding of
Investigation of the Resistance Spot Welding of Fe-Ni-Co Alloy and Copper
This article is devoted to investigation of the resistance spot welding of Fe-Ni-Co alloy and Cu wires by the method of analog modeling. Welding is a complicated object to research: integrated investigation and description of characteristics of welding by existing mathematical methods not achieved at this time. The application of system analyses by logical functions allows to describe the causal and effect relationships between large number of parameters of the technological process. For the logically verified original solution development, the analog model of resistance welding of Fe-Ni-Co alloy and Cu wires was elaborated. On the basis of this model the generalized solution, that provides the welding joints of high quality, was developed. 1. INTRODUCTION Up-to-date instrument engineering demands new technological solutions. It must be noticed that applying of traditional procedures for elaboration of new solutions such as intuitive method, statistical approach, fragmentary logic analysis, and optimization on the basis of the system analysis can take the significant time and capital inputs and may be unsecussful. That's why for investigation of resistance welding of Fe-Ni-Co alloy and Cu wires we decide to use the method of the analog (non-discrete) modelling which was proposed by R.B.Rudzit [1] and was successfully used by authors and other researches [2-5]. The main advantage of this method is that the application of system analysis by logical functions allows describing the causal and effect relationships between large numbers of parameters of the welding technological process. Using described in [1,4,5] main principles of analog modelling the analog model of resistance welding of Fe-Ni-Co alloy and Cu wires was elaborated and is offered below.