An Analysis on Specimen Size for Determination of Diffusible Hydrogen Content in Weld Metal

概要

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Reasonable and adequate sizes of the specimen for determination of diffusible hydrogen content in SMAW and SAW welding ate proposed based on analytical and FDM calculations of hydrogen evolution in finite size bead-weld specimens. Effects of specimen thickness, width, length, and thermal cycle are discussed. It is concluded that when the size of the specimen required for the diffusible hydrogen measurement is estimated with an error of 1%, the specimen sizes for shielded metal and submerged arc weldings are recommended as follows: 10 mm in thickness, 20 mm in width and 40 mm in length for SAW with 4 mmφ electrode and 17 kJ/cm heat input, 10 mm in thickness, 30 mm in width and 40 mm in length for SAW with 4 mmφ filler wire and 31 kJ/cm heat input.
社団法人溶接学会の論文
1986-04-01