How should the last sentence of NB/T47014-2011 6.1.5.2 be understood?
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For 38mm Q345R SAW welded parts that are subjected to post-weld heat treatment and room-temperature impact testing, how should one understand the range covered by the base material and the thickness of the weld metal? I earnestly ask for your guidance!
For 38mm Q345R SAW welded parts that are subjected to post-weld heat treatment and room-temperature impact testing, how should one understand the range covered by the base material and the thickness of the weld metal? I would appreciate it if someone could give me some advice: 1. The base material thickness ranges from 5 to 41.8 mm. . For the lower limit, refer to the last sentence in 6.1.5.2; for the upper limit, refer to Table 10: 38*1.1. As for the weld metal thickness, which ranges from 0 to 200, refer to Table 7
After normalizing, it remains as per Table 7: base metal thickness of 5–200 mm, and weld thickness of 0–200 mm.
Why isn’t the weld thickness 0-41.8
If the test specimen is heat-treated in the same furnace as the product, and the temperature at that time is below the upper transformation temperature, what are the differences in the coverage range in this case?