In modern welding technology, laser handheld welding has received widespread attention for its high precision, high efficiency, and flexibility. However, for beginners or non professionals, understanding the difference between single pendulum and double pendulum modes in laser handheld welding may not be intuitive. This article will delve into the characteristics, application scenarios, and main differences between these two modes, helping readers better understand and choose the welding method that suits their needs.

1、 Overview of Basic Principles

Laser handheld weldingIt is a technology that uses high-energy density laser beams as a heat source for material connection. Compared with traditional arc welding, it has the advantages of energy concentration, fast welding speed, and small heat affected zone. According to the different motion trajectories of the laser head during the work process, it can be divided into two modes: single pendulum and double pendulum.

2、 Detailed explanation of pendulum mode

1. Working principle

In the pendulum mode, the laser beam oscillates back and forth in one direction at a fixed frequency, creating a pendulum like effect. This movement method makes the heat distribution more uniform and is suitable for thin plate materials or situations that require precise control of the heating area.

2. Advantages

High precision: Due to the beam being concentrated in a small area and repeatedly scanned, a very delicate fusion effect can be achieved.

Good stability: Continuous movement in a single direction reduces temperature fluctuations caused by speed changes and improves the consistency of welding quality.

Easy to operate: Compared to other modes, the single swing mode is easier to set and easy to get started with.

3. Application scenarios

Precision parts manufacturing

Thin walled container welding

Sealing of electronic product casing

3、 Detailed explanation of double pendulum mode

1. Working principle

The dual swing mode allows the laser beam to swing alternately along two mutually perpendicular directions (usually the X-axis and Y-axis) simultaneously, thereby covering a larger area. This method is particularly suitable for welding tasks involving thick plates or complex shaped workpieces.

2. Advantages

High efficiency: By expanding the scanning range, large-area welding operations can be completed in a shorter time.

Strong adaptability: It can also adapt well to irregular surfaces or three-dimensional structural components, ensuring good penetration depth.

Reduce deformation: Quickly crossing large areas helps to disperse heat input, reduce the risk of substrate overheating, thereby reducing the thermal stress on the workpiece and the possible twisting phenomenon during subsequent cooling processes.

3. Application scenarios

Assembly of heavy machinery components

Pipeline repair and reinforcement

Construction of automobile body frame

4、 The main difference between the two

Motion trajectory: As mentioned earlier, the pendulum only moves back and forth along a single axis; Double pendulum involves interlocking movements on at least two axes.

Target audience: The former is more suitable for lightweight and high flatness materials; The latter is designed for objects that are thick or have complex geometric shapes.

Process parameter adjustment: Due to the involvement of more variables (such as swing frequency, amplitude, etc.), double swing requires more detailed adjustment of various parameters in actual operation to achieve the optimal state.

Cost considerations: Although both can significantly improve production efficiency, considering factors such as equipment complexity and maintenance costs, the cost of using a dual pendulum system is usually higher than that of a single pendulum solution.

5、 How to choose?

The decision on which mode to use depends on multiple factors, including but not limited to the type and thickness of the material to be processed, the required quality standards, and budget constraints. Generally speaking, if the project requires extremely high precision and the workload is not large, then a pendulum may be a better choice; On the contrary, if facing large-scale production or difficult material conditions, investment in advanced equipment that supports dual pendulum function should be considered. In addition, these two technologies can be flexibly combined according to specific application situations to complement each other's strengths and weaknesses, in order to obtain the optimal solution.

Both single pendulum and double pendulum are indispensable and important tools in modern industrial production. Correctly understanding their characteristics and using them reasonably can not only effectively improve product quality and production efficiency, but also bring significant economic benefits to enterprises. I hope the above content can provide reference value for friends who are looking for suitable welding methods!