US Patent Application 18180872. SPATTER DETECTION METHOD simplified abstract
Contents
SPATTER DETECTION METHOD
Organization Name
Inventor(s)
SPATTER DETECTION METHOD - A simplified explanation of the abstract
This abstract first appeared for US patent application 18180872 titled 'SPATTER DETECTION METHOD
Simplified Explanation
The patent application describes a spot welding method that uses a pulse-shaped waveform to supply a welding current to a workpiece.
- The method involves maintaining the welding current within a set peak current range and then decreasing it towards a bottom current before increasing it back towards the peak current range.
- This process is repeated for multiple cycles until the effective value of the welding current reaches a set target range.
- The application also includes a spatter detection method that measures the pulse width in each cycle of the pulse-shaped waveform.
- It detects the occurrence of spatter when the difference in pulse width between the current cycle and the previous cycle exceeds a width threshold value.
Original Abstract Submitted
A spot welding method includes supplying a welding current having a pulse-shaped waveform to a workpiece by alternately executing a step of maintaining the welding current within a set peak current range and a step of decreasing the welding current from the peak current range toward a bottom current and then increasing the welding current toward the peak current range when an effective value of the welding current reaches a set target range for a plurality of cycles. The spatter detection method includes measuring a pulse width IW(1), IW(2), . . . in each cycle of the pulse-shaped waveform and detecting the occurrence of spatter when a pulse width difference D(M)=IW(M)−IW(M−1) between a pulse width IW(M) in a target cycle (M-th cycle) and a pulse width IW(M−1) in a cycle immediately before the target cycle exceeds a width threshold value Dth.
