«Автоматическая сварка», 2013, № 10-11, с. 93-101
ONGOING ACTIVITIES AND PROSPECTS RELATED TO WELDING TECHNOLOGY AT LAPROSOLDA-BRAZIL
LOURIEL O. VILARINHO1 and LAURA O. VILARINHO2
Laprosolda Е Center for Research and Development of Welding Processes, Federal University of Uberlandia, Brazil. E-mail: firstname.lastname@example.org
CTBC/Algar Telecom, Uberlandia, MG, Brazil
An overview of Laprosolda' activities in research, development and innovation of welding processes is presented within three main areas: fundamentals, instrumentation and application. Since the group philosophy aims to develop different welding processes, in this work three cases are presented to illustrate these areas. The first one deals with the measurement of heat input for derivative arc-welding processes. The second case shows embedded systems developed for arc-welding monitoring and control. The last one presents the evaluation of conventional and controlled short-circuit GMAW processes for pipe welding. The objective is to present the ongoing activities and prospects related to welding technology within Laprosolda group. 16 Ref., 3 Tables, 10 Figures.
heat input measurement, monitoring and control, pipe welding, ongoing activities, prospects
1. API 1104:2010: Welding of pipelines and related facilities.
2. Arata, Y. et al. (1979) Investigation on welding arc sound. Transact. of Joining and Welding Research Institute, 8(1), 25-31.
3. Bosworth, M. (1991) Effective heat input in pulsed current gas metal arc welding with solid wire electrodes. Welding J., 70, 111-117.
4. (2000) BS7570: Code of practice for the validation of arc welding equipment.
5. Cayo, E.H., Alfaro, S.C.A. (2009) A non-intrusive GMA welding process quality monitoring system using acoustic sensing. Sensors, 9, 7150-7166.
6. Costa, T.F. (2011) Application of MAG processes with short-circuit transfer in conventional and controlled modes for carbon-steel pipe welding: MSc. Thesis, Federal University of Uberlandia, MG, Brazil.
7. Cudina, M., Prezelj, J., Polajnar, I. (2008) Use of audible sound for on-line monitoring of gas metal arc welding process. Metalurgija, 47, 81-85.
8. Cunha, A.F. (2007) What are embedded systems? Saber Eletronica, 43, July, 414.
9. Harwig, D.D. (2003) Arc behavior and metal transfer in the VP-GMAW process. CranfieldUniversity: School on Industrial Manufacturing Science.
10. Hsu, C., Soltis, E.P. (2003) Heat input comparison of STT vs. short-circuiting and pulsed GMAW vs. CV Processes. In: Proc. of 6th Int. Conf. on Trends in Weld. Res., 369-374.
11. (2005) ISO 3834: Quality requirements for fusion welding of metallic materials.
12. Joseph, A., et al. (2003) Measurement and calculation of arc power and heat transfer efficiency in pulsed gas metal arc welding. Sci. and Technology of Welding and Joining, 8(6), 400-406.
13. Machado, M.V.R. (2011) Embedded system for wireless signal monitoring during arc welding with technological approach. MSc. Thesis, Fed. Univ. Uberlandia.
14. Mota, C.P. (2011) Near-infrared vision system for arc-welding monitoring: Master Thesis, Federal University of Uberlandia, MSc. Thesis, MG, Brazil, 137f.
15. Pepe, N. (2010) Advances in Metal Arc Welding and Application to Corrosion Resistant Alloy Pipes. CranfieldUniversity.
16. Vilarinho, L.O. et al. (2009) Methodology for parameter calculation of VP-GMAW. Welding J., 92-98.