How Does Underwater Welding Work? Shocking Process Few Know

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Underwater welding is one of the most primarily paid jobs in the world. Why? Let's know about it. Under the depth of hundreds of meters, not only well experienced in welding is required, but also it needs a lot of dive practice.

Underwater welding leads to numerous life hazards, which also tackled throughout the welding process.

The whole underwater welding process is full of risks. And a welder faced many dangerous instances while performing any task of underwater welding.

Due to frequent above reasons, it's a highly paid job for the expert underwater welder. Chiefly, how does marine welding works is the center of this article? 

The underwater welding process is used for underwater pipelines and submarines and ships as well. It's not similar to standard welding. It's a very different task in the field of welding. Let's know about, how does underwater welding work?

The working phenomenon of underwater welding

The whole welding process is to conduct underwater. Diver-welder and electrode directly contacted with water, so the electric hazards increased. For handling all the consequences, the special highly isolated equipment is provided to diver-welder to perform safe welding underwater. 

How does underwater welding work?

Is describes the following steps.

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The circuit works on high volts direct current of 300 to 400 In underwater welding, the whole team is working behind the diver-welder on the surface.

The particular circuit that operates by the backup team embedded highly isolated knife switches closed when needed. Particularly needs for exact welding time.

  • Welding process:

Shielded metal arc welding (SMAW) mainly used for underwater welding purposes. Stick welding operates as similar to inland welding, but electrodes specially designed as isolated welding rod.

These welding rods are isolated to protect the worker from electric shocks, and affiliated flux with consumable welding rod makes a protective layer of gases around the welding site to illuminate the interruption of water between the welding practices.

  • Gases protection:

Gases producing on the melting of flux are the specialized gases combination that forms a cloud around the worksite and makes a protective layer that ensures the welding waterproof. The filler metal is also transfer by gases in the form of continuous droplets. The endless emitting gas bubbles make a challenging vision for the worker. And that issue is tackled by experience. Many experts are much accuracy you got.

  • Slag protection:

As all of us well know about the welding procedure that sudden cooling makes the welding non-relabel. Underwater welding the flux also provides a useful layer of slag which covers the new welding site to prevent drastic cooling.

The complete work of underwater welding needs a commercial highly trained diver-welder, a well-trained team, and highly isolated equipment. The Sum of all the above points gives the best and durable welding results underwater.


Underwater welding works as similar to land standard welding, but the electrode differently designed to protect it from water. As salted water has more conductivity, then surly needs precautions against electric shocks of 400amps direct current. How does underwater welding works isn't just as simple as described? We try to makes you understand about marine welding process. The primary function preferred as a particular electrode that protects and welds the broken welding site without interruption of water. This article makes you understand wet welding.


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