Views: 0 Author: Site Editor Publish Time: 2021-07-16 Origin: Site
Sometimes people confuse vibration welding machine with ultrasonic spot welding machine because both processes use vibration energy to create friction and generate heat to weld workpieces. However, these two processes are very different. So, please allow me to introduce both types to you and tell you the differences between them.
l Here is the content list:
l What is the working principle of an ultrasonic spot welding machine?
l What is the working principle of a vibration welding machine?
l What are the differences between the working principles of these two machines?
The working principle of an ultrasonic spot welding machine or you can call it the way it welds overlapping metal sheets is to apply pressure to the metals that are needed to be welded together and supply the electric current so that the welder will generate so-called thermoelectric heat, which will be applied to the area of the metal. Copper alloy electrodes are usually used because they can pass current well. Depending on the size of the pressure applied by the welder, the diameter of the weld is approximately between 3 and 12mm. The thickness of the metal that can be spot welded ranges from 0.02 inches to 0.118 inches. The pressure point applied by the copper electrode provides a stable welding point, so that makes sure the reliability of this equipment. The basic equipment required for spot welding includes a workstation, which includes a welding power source and a welding head connected to the welding electrode.
So, after introducing the working principle of an ultrasonic spot welding machine, it is time for the introduction of the working principle of a vibration welding machine. The working principle of a vibration machine or you can call it vibration welding technique is a process of welding two plastic parts together using linear vibration. The welding ribs or weld beads on one component vibrate relative to the other component under shear. The friction generates heat, which causes the welding ribs to melt. The final step is to stop the vibration and then clamp the parts together until they bond to each other. Once they are bonded to each other, the process is finished and nice work is done.
Right now there is only one big question left, what exactly are the differences between the working principles of these two machines? Well, I think this question can be solved in the comparisons of five factors: The first one is the directions of their vibration, The vibration welding machine typically works with linear left-to-right movement. In contrast, the ultrasonic spot welding process vibrates one component perpendicular to the other, like a jackhammer on a paved road. The second one is the frequency of vibration. The difference between the vibration frequency of these two machines are really big, as the vibration welding machine only vibrates 120 to 140 times in a second, the ultrasonic spot welding machine vibrates 20000 to 40000 times in a second, producing an ultrasound that is too high for human to hear. The third one is the amplitude of vibration. Amplitude is the distance between the two furthest points of vibrational motion. In vibration welding, the amplitude is usually between 0.4 to 4 mm in high-frequency machines. In contrast, the amplitude of ultrasonic spot welding machine is much smaller. Many types only use an amplitude of 0.025 to 0.125 mm. Another factor is the welding time. Generally speaking, vibration welding is a quite quick process with typical cycle times in the 5-10 s range, but ultrasonic welding is much faster as the cycle time of it only within 1 and 3 s.
If you are looking for a reliable ultrasonic spot welding machine to purchase, please make sure you check out the ones in Hangzhou Shengpai Technology Co., Ltd, their nice and high-quality machines are definitely appealing to your unique taste.
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