Evaluation and Repair of Wrought Iron and - Purdue e-Pubs ...

2136- Passes were then added with the same E6010 or E7018 SMAW 1/8” diameterwelding rod at an average rate of 3.8 in/min using the same machine, amperageand voltage as the initial pass. These passes were alternated on either side untilthe final pass was above the original surface of the wrought iron being weldedtogether, as seen in Figure D.5. In between each pass the chisel hammer, wirebrush and sometimes the grinder were used to remove slag that had risen to thesurface of the weld.7- The metal was also left to cool slightly in between each pass to ensure that thetemperature was not too high. (This would correlate to having a maximum interpasstemperature of 250 o F similar to the Filler Weld Repair.)8- Figure D.6 shows the number and sequence of weld passes placed in each tensiletest coupon.9- After the welding was completed, the specimens were left to cool in air slowly toroom temperature.10- The specimens were then surface ground smooth until the faces were flush.