Application and Upgrading of On-line Monitoring System for Measurement and Processing of Electric Signals at Arc Stud Welding Process
As the application of on-line monitoring system is shown to be a good solution during monitoring of main welding parameters at different welding processes, this paper describes application and upgrade of on-line monitoring system developed at Mechanical Engineering Faculty in Slavonski Brod. Experimental part of the paper shows application of on-line monitoring system during welding of two types of studs with application of activating flux for ATIG process (VS-2E) on the base metal surface. Monitoring of main welding parameters (welding current and voltage) was conducted during welding of studs usually used in steam boiler production (stud diameter: 10 mm), and welding voltage was monitored on the studs (shear stud) of 22 mm diameters used in bridge construction. The goal of monitoring and analyse of main welding parameters is to evaluate the connection of electric arc parameters variations with the presence of activating flux.
Examination of welding parameters’ influence on stud arc welding process
In this paper, the influence of two selected parameters (the welding time and the presence of the activating flux on the surface of the base metal) on the weld joint at Stud Arc Welding process is investigated. In the experimental part of the paper, the drawn arc stud welding process with the ceramic ferrule is applied with the different welding time and the application of the activating flux for ATIG process. In order to evaluate the influence of the welding time and the activating flux on the weld characteristics, the cast zone width and Vickers hardness HV 0.2 are measured.
Computer aided welding parameters monitoring
General considerations on the application of the compujter aided welding parameters monitoring and processing of collected data oare given. Description of the experimental work using the self designed data acquisition device for welding parameters monitoring is provided. The measurements comprised monitoring of welding current and arc voltage for MMA and MIG/MAG processes. Basic description of the eyuipment is presented, as well as its possibilities regarding registration and processing of the acyuired data. Some results, obtained by experimental workk, are illustrated by records, statistical analysis and numerical values obtained after processing applying proprietary software. Such approach to measuring of welding parameters and processing of the collected data may be effectively used in production and testing of welding eyuipment and consumables. Some results abtained through experiments are illustrated by recortds, statistical analysis and numerical values after being processed using one s own software.