Why the joint is critical
Literature on looped diamond wire welding notes that the loop format removes reciprocating reversal but introduces a new requirement: the wire ends must be joined reliably.
A weak joint may fail under tension. A bulky or uneven joint may create vibration, marks, or accelerated wear as it passes over wheels.
Process variables
Studies discuss welding capacitance, welding voltage, heat treatment temperature, and response surface optimization as factors that influence breaking force and joint quality.
For purchasing, it is practical to ask how the loop joint is made, how it is inspected, and whether the supplier can provide breaking-force or fatigue-related evidence.