Language
Correlation Between Three Core Parameters: Welding Pressure, Amplitude & Welding Time for Ultrasonic Metal Welding
Jul 11,2026
The core strengths of ultrasonic metal welding are low-temperature solid-state bonding, high efficiency, environmental protection and high joint strength. Fully realizing these advantages relies on precise regulation and coordinated matching of three core parameters: welding pressure, amplitude and welding time. The three factors interrelate and interact, determining welding quality and workpiece integrity.
1. Core Functions of Each Parameter
1.Welding Pressure: Main function is to tightly fit workpiece contact surfaces and squeeze out gaps, enabling efficient transmission of ultrasonic vibration energy. It also prevents workpiece shifting and deformation caused by excessive local pressure, laying a stable foundation for welding.
2.Amplitude: Generated by ultrasonic generator, the key carrier of vibration energy. It directly determines friction heat generation efficiency and energy transfer effect, affecting welding bonding strength.
3.Welding Time: Controls total energy input, defines nugget forming quality and HAZ size, avoiding over-welding or insufficient bonding.
2. Coordination Logic of Three Parameters
1.Amplitude & Pressure: Larger amplitude requires synchronous adjustment of welding pressure to prevent scattered energy and weak joints. Insufficient pressure hinders amplitude transmission; excessive pressure easily damages workpieces.
2.Amplitude & Time: Higher amplitude accelerates energy delivery, allowing shorter welding time. Lower amplitude needs extended duration to reach required energy level.
3.Pressure & Time: Higher pressure achieves tighter fitting, which can shorten welding time. Insufficient pressure requires longer time to compensate, otherwise pseudo-welds appear.
3. Impacts of Each Parameter on Welding Quality
1.Welding Pressure: Determines workpiece fitting degree and energy transfer efficiency. Insufficient pressure disperses energy and causes cold joints; excessive pressure deforms terminals and workpieces.
2.Amplitude: The core of energy transmission. Low amplitude fails to generate enough friction heat for reliable bonding; over-amplitude accelerates horn wear and creates surface burns & cracks on parts.
3.Welding Time: Governs total heat input. Excessively long time expands HAZ, embrittles metals and drops conductivity; overly short time cannot form effective metallurgical bonding and leads to detachment.
Related News
Wuxi HAIFEI Intelligent Equipment Co., Ltd.
Wuxi HAIFEI Welding Equipment Co., Ltd.
Add: 28 Shuiyun Road, Yuecheng, Jiangyin, Jiangsu Province, China. (Postal Code: 214404)
Mobile: +86 18915302352
Email: wushijie@jshaifei.com