Weld throat thickness
Weld throat thickness is the minimum height of the triangle in a fillet weld that fits into the cross-section, and it is crucial for load-bearing capacity.
Physical-Chemical Mechanism of Action
Weld throat thickness determines the minimum strength of the joint. A larger fillet weld leg increases the load capacity because it overlaps more metal and creates a stronger connection.
Metallurgical Relevance & Welding Risks
A too-thin weld can cause stress distribution issues, leading to cracks or fracture of the components. A too-thick weld increases hardness and can cause hot cracking or stress accumulation.
Workshop Practice & Instructions
For optimal weld throat thickness, consider the following values:
• Minimum thickness: 1.5 x thickness of the thinner component
• Maximum thickness: 2 x thickness of the thinner component
These values ensure adequate load capacity and minimize the risk of cracking or hot cracking.