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Dissimilar Metal Sheet Welding by 20Khz Ultrasonic Metal Welding Equipment
Description:
Ultrasonic metal welding is a fast, clean and economical technology that is widely used in various automation industries.
The ultrasonic metal welding process is a process between cold
press welding and friction welding that utilizes high density
energy generated by high frequency mechanical vibration. The
mechanical vibration of the welding head of the ultrasonic metal
welding is parallel to the surface of the workpiece. During
welding, the static pressure acts perpendicularly on the welding
surface through the welding head, and at the same time superimposes
the shearing force of the high-frequency vibration. When the
shearing force exceeds the elastic limit of the material, the part
of the contact surface of the workpiece begins to slip. This
shearing force During the welding process, the direction is
continuously changed at a frequency of tens of thousands of times
per second, and the dirt on the surface of the workpiece is broken
and removed. The surface of the pure metal begins to contact in
multiple points. With the continuation of high-frequency vibration,
the area of pure metal is continuously expanded. Until it expands
into the entire weld zone, at the same time atom diffusion occurs
on the contact surface, and the metal recrystallizes to form a fine
grain structure and exhibits cold metal deformation
characteristics.
Specifications:
Item No | QR-D2020A | QR-D2030A | QR-D2050A |
Power | 2000W | 3000W | 5000W |
Air Pressure | 0.05-0.9MPa | 0.05-0.9MPa | 0.05-0.9MPa |
Frequency | 20KHZ | 20KHZ | 20KHZ |
Voltage | 220V | 220V | 380V |
Weight of horn | 55KG | 60KG | 88KG |
Dimension of Horn | 550*280*380mm | 550*280*430mm | 550*380*660mm |
Generator Size | 540*380*150mm | 540*380*150mm | 540*380*150mm |
Purchasing essentials for ultrasonic metal spot welding machines:
1. For different weldments and materials, amplitude is the key, and
the texture is important detail. Ultrasonic welding is like a
double-edged sword for amplitude requirements. It is too small to
be welded and damaged. This directly requires the welder to have a
continuously adjustable amplitude function.
2. The best control method in ultrasonic welding is the energy
control mode, which controls the consumption of each welding.
3. Choice of welding head mode: The welding head is divided into
two types: the body welding head and the overall welding head. The
advantage of the split weld head is that the replacement cost is
low. However, there are many disadvantages, such as the heat
generated by the difference in sound speed between the two
materials. From a technical point of view, the integrated welding
head has an absolute advantage.
4. Rack structure problem: The most important one is the fixed mode
of the welding head and the secondary rod. The metal welding
generally faces a large pressure and is lateral, which requires the
welding head and the secondary rod to be fixed. Must be hard fixed.
What is the hard fixing method, that is, the fixing is
metal-to-metal tightening, and the corresponding one in the plastic
welding ring is a rubber ring or nylon gasket for buffering. This
method cannot be used in metal welding: no limit .
5. Pressure control structure: A good welder must have a good
pressure control mechanism. The electric proportional valve or the
precision pressure regulating valve is a pneumatic control valve
with feedback, which can better control the stable air pressure.
Dissimilar Metal Sheet Welding by 20Khz Ultrasonic Metal Welding Equipment