Cladding Shear Bond Strength
Cladding shear bond strength is the mechanical resistance of the interface between base material and cladding to shear loading. It is determined by destructive testing to ensure bond quality.
Physical-Chemical Mechanism of Action
Plating shear bond strength refers to the mechanical strength of the bond between a base metal and a cladding layer. It indicates how resistant this bond is to shear forces. The strength is determined by the base material, the cladding material, and the quality of the bond.
Metallurgical Relevance & Welding Risks
Too low plating shear bond strength can lead to failure or cracking in the bond. This can especially occur if the cladding wasn't applied properly or the base material has poor bondability with the cladding. A value that's too low points to a faulty joint or an inadequate welding process.
Workshop Practice & Action Guidelines
To ensure plating shear bond strength, the following measures must be taken:
• Use high-quality claddings and matching base materials.
• Make sure the cladding is applied correctly and no air bubbles or stress concentrations develop.
• Check the plating shear bond strength after welding using suitable test methods like the Vickers indentation test (VIT) or the Knoop hardness test (KHT).
• If the value is below the allowable threshold (e.g., 30 N/mm² for steel), re-jointing is required.