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Staggered welds: What's the appeal of intermittent welding? Why not choose continuous welding?
Welding is a method of permanently joining metal parts, and then a special welding technology emerged - intermittent welding. This method is gaining more and more attention in industrial applications, especially when strength connection is required, the reasons for choosing intermittent welding are becoming more and more obvious. In this article, we will take a closer look at the appeal of intermittent welding and its technical advantages compared to continuous welding.
Overview of welding technology
There are many types of welding techniques, the most common of which include butt welding and fillet welding. During the welding process, the shape and characteristics of the weld will affect the performance of the final structure. Intermittent welding, as the name suggests, means that welding is not performed continuously on the joint, but at certain intervals. This technology shows its unique advantages in many industrial scenarios today.
Why choose intermittent welding?
Intermittent welding has several distinct advantages over continuous welding:
First, intermittent welding can effectively reduce heat input, reduce metal deformation and stress concentration.
With the increasing requirements for welding technology, thermal management during the welding process has become the key. When the heat input of the weld metal is too high, it may cause material deformation, reduced strength, or even cracks. The intermittent welding technique involves controlling the welding time and the management of the pause time to maintain the optimal condition of the weld joint.
Secondly, this welding method can save materials and time and enhance production efficiency.
In some applications where continuous welding is not required, excessive welding not only wastes material but also causes unnecessary time delays. Through intermittent welding, welders can complete welding more efficiently, reducing welding costs while also obtaining satisfactory strength and structural properties.
How to implement intermittent welding effectively?
To effectively perform intermittent welding, welders need to have a clear understanding of the weld drawings. The markings on the welding drawings can provide necessary information, including welding length and spacing, which is crucial and determines the success of welding.
In welding drawings, intermittent welding is usually marked with two numbers, the first number is the length of the weld and the second number is the distance between the weld points.
Understanding of these numbers has a direct impact on the accuracy of the weld because they guide the welder on how to correctly add weld points. This is especially important in structures with higher strength requirements to prevent structural failure due to improper welding.
Disadvantages of continuous welding
Continuous welding is often not an ideal option when faced with the need to prevent structural deformation. As the welding current continues to flow in, the material stays in the high temperature area for too long, which may cause changes in the metal lattice structure, thereby affecting the long-term performance of the overall structure.
The continuous welding process may also lead to additional quality control issues and increased welding noise and vibration.
Such noise and vibration not only affect the welder's working environment, but may also cause malfunctions of other equipment. This means that in many cases, opting for intermittent welding would be a wiser choice.
ConclusionWhether in construction, fabrication or repairing a bad weld, intermittent welding offers significant advantages over the characteristics of continuous welding. Speed, efficiency and the ability to control heat input have made it gradually become an important technology in modern engineering welding. But in practice, welders and designers need to constantly improve their interpretation of welding drawings and welding practices to ensure welding safety and quality. Have you ever considered choosing intermittent welding in your welding work to improve product quality and efficiency?
