Fusion Line Dilution Calculation
The fusion line dilution calculation determines the ratio of melted base material to added filler metal in the weld cross-section. This is critical for the proper composition and hardness of the weld.
Physical-Chemical Mechanism of Action
The fusion line dilution calculation determines how much base metal and filler metal mix in a given area of the weld cross-section. This affects the chemical composition of the weld and determines its mechanical properties.
Metallurgical Relevance & Welding Risks
Incorrect calculations can lead to uneven galvanizing, insufficient hardness, or excessive stress buildup. This can cause cracks, wear, and low toughness in the weld.
Workshop Practice & Instructions
To correctly calculate the fusion line dilution, the following values must be known:
• Thickness of the base material (in mm)
• Width of the weld (in mm)
• Galvanizing value of the base material
• Galvanizing value of the filler metal
The calculation is done by the ratio of these values. For example: If the base material thickness is 10 mm and the weld width is 2 mm, then the dilution percentage is 50%. This means that in the weld cross-section, 50% of the base material and 50% of the filler metal have been melted.