The problem of determining the thickness of a single-layer weld bead
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How is the thickness of a single weld pass determined for manual welding, TIG welding, and CO2 gas shielded welding? Are there any requirements? What is the typical thickness? I really need information on this topic
The thickness of the weld bead must be proportional to its width! ! The thickness of the weld bead should be no more than one-third of its width! Because it involves the issue of grain boundary segregation! ! It’s the shape issue of the weld metal that crystallizes at the end! ! Therefore, the thickness of the weld bead must be determined in accordance with the specified weld width-to-thickness ratio! Calculate the number of weld passes according to this regulation! !
Generally, it is the plate thickness divided by the number of layers; for example, a 12mm thick plate with 6 layers means 2mm per layer. It is possible to have multiple layers per layer, but they are all on the same layer, so it is considered to have the same thickness.
Some can be calculated, but it’s practically impossible to do so in practice, especially with products. If the welder reaches a certain level, he will consider the mechanical properties. Naturally, line energy will be considered, as well as the number of passes required for welding. A good welder will proactively communicate with the welding engineer when welding materials they are not familiar with.
What reference materials and standards can be consulted to solve such problems?
What about the experts? I’m offering a reward of 50,000 dollars!
If the thickness of a single layer is large, high wire energy is necessary in order to achieve full penetration; however, the materials and equipment cannot handle an infinitely high level of energy. Therefore, this is determined by the properties of the materials, the equipment, as well as the characteristics of the container. Why talk about container features? For example, in cryogenic liquid storage tanks, multi-pass welding with a low current is required. Some media are also corrosive; to prevent concentration cell corrosion, it is necessary to ensure that there is no undercutting in the welds, which requires that both inspection and welding processes take these characteristics into account.