PRELIMINARY STUDIES OF SEAMLESS FLUX CORED WIRES STORED IN EXTREME CONDITIONS

In the paper preliminary experimental studies of flux cored wires moisturized under controlled conditions are described. Three seamless wires of different grades have been placed in environmental chamber and moisturized in extremely adverse conditions (temperature T = 60° C, relative humidity H = 90%) for 240 hours. During this time measurements of weight gain and observations of surface of wires have been carried out. Also diffusible hydrogen amount in deposited metal has been determined by mercury method for one of moisturized wire. Significant increase of hydrogen level was observed (from H5 to H10 level). Further research will be aimed on determination of the effect of storage conditions on hydrogenation of deposited metal and quality of flux cored wires.

[1]  J. Tomków,et al.  Diffusible Hydrogen Control in Flux Cored Arc Welding Process , 2013 .

[2]  J. Łabanowski,et al.  Skłonność do tworzenia pęknięć zimnych złączy ze stali S420G2+M spawanej pod wodą metodą mokrą , 2013 .

[3]  K. Pańcikiewicz,et al.  Cracking of High-Strength Steel Welded Joints , 2013 .

[4]  J. Tomków,et al.  DETERMINATION OF DIFFUSIBLE HYDROGEN CONTENT IN THE DEPOSITED METAL OF RUTILE ELECTRODES BY THE GLYCERIN METHOD , 2013 .

[5]  D. Fydrych,et al.  Determining diffusible hydrogen amounts using the mercury method , 2012 .

[6]  J. Pilarczyk,et al.  Spawalnictwo dziś i jutro , 2012 .

[7]  D. Fydrych,et al.  The Effect of Welding Conditions on Diffusible Hydrogen Content in Deposited Metal , 2011 .

[8]  T. Kozak.  Resistance to cold cracking of welded joints made of P460NL1 steel , 2011 .

[9]  M. Sozańska,et al.  Application of quantitative fractography in the assessment of hydrogen damage of duplex stainless steel , 2009 .

[10]  T. Piątkowski,et al.  Znaczenie wolnego wylotu elektrody przy spawaniu drutami proszkowymi , 2009 .

[11]  W. Świątnicki,et al.  Effect of hydrogen concentration on the embrittlement of a duplex stainless steel , 2005 .

[12]  J. Ćwiek,et al.  Hydrogen assisted cracking of high-strength weldable steels in sea-water , 2005 .

[13]  D. Nolan,et al.  Diffusible Hydrogen Content in Rutile Flux-Cored Arc Welds as a Function of the Welding Parameters , 2004 .

[14]  S. Liu,et al.  Welding current effect on diffusible hydrogen content in flux cored arc weld metal , 2002 .

[15]  J. Cruz,et al.  Effects of welding parameters and electrode atmospheric exposure on the diffusible hydrogen content of gas shielded flux cored arc welds , 1999 .

[16]  M. S. Sierdzinski,et al.  New flux cored wires control diffusible hydrogen levels : Special emphasis : Developments in welding electrodes , 1998 .

[17]  J. H. Kiefer.  Effects of moisture contamination and welding parameters on diffusible hydrogen , 1996 .