The influence of current pulse width on electrode wear during resistance spot welding of thin sheets (1 mm, 0.04 in) of aluminum alloy 6016-T4 was studied, and an increase in sheet surface roughness and electrode erosion was evident with increasing pulse time for the same weld nugget size. Aluminum alloy 6016-T4 is an especially critical material concerning electrode wear for resistance spot welding due to rapid onset of electrode sticking and erosion of the electrode surface. Typically, welding of this material therefore requires electrode redressing operations after approximately 20 to 30 welds to maintain constant weld size and sheet surface quality. It was demonstrated that a reduction of current pulse width is a means of reducing electrode wear without affecting joint properties. The electrode wear process involved a pickup of aluminum material from the sheets followed by alloying process, leading to formation of intermetallic phases and erosion of material from the surface of the electrodes with increasing number of welds made. A reduction of current pulse width positively affected electrode wear properties by reducing temperatures at the electrode and sheet surfaces, thereby delaying electrode wear and reducing its severity.

研究了电流脉冲宽度对铝合金6016-T4薄板（1毫米，0.04英寸）电阻点焊过程中电极磨损的影响，并且随着脉冲时间的增加，钢板表面粗糙度和电极腐蚀明显增加。相同的熔核大小。铝合金6016-T4是特别重要的材料，它涉及因电极快速开始粘着和电极表面腐蚀而引起的电阻点焊电极磨损。因此，通常，这种材料的焊接需要在大约20到30次焊接后进行电极修整操作，以保持恒定的焊接尺寸和薄板表面质量。已经证明减小电流脉冲宽度是在不影响接头性能的情况下减少电极磨损的一种手段。电极磨损过程涉及从板材中拾取铝材料，然后进行合金化过程，从而导致金属间相的形成以及随着焊缝数量的增加而从电极表面侵蚀材料。电流脉冲宽度的减小通过降低电极和薄板表面的温度，从而积极地影响了电极的磨损性能，从而延迟了电极的磨损并降低了其严重性。