Industry News

Induction Heating Improves Pipeline Weld Quality

 

Transmission pipeline welding often requires preheating of the weld zone to ensure that the joint achieves its required strength and hardness. Proper preheating also helps minimize the risk of delayed hydrogen-induced cracking, which is a significant concern that impacts weld quality and integrity in transmission pipelines.

There are several heating methods available when preheating and stress relieving of parts is necessary in pipeline welding. Open flame has been one commonly used method. However, it presents some challenges that can negatively impact weld quality and integrity.

Induction

One of the main quality challenges when using open flame for preheating pipe in the field is that a byproduct of the process — water vapor — introduces a hydrogen risk. Using induction heating instead of open-flame heating eliminates that hydrogen risk by keeping moisture out of the process.

 

Read the full article at: napipelines.com

Transmission pipeline welding often requires preheating of the weld zone to ensure that the joint achieves its required strength and hardness. Proper preheating also helps minimize the risk of delayed hydrogen-induced cracking, which is a significant concern that impacts weld quality and integrity in transmission pipelines.

There are several heating methods available when preheating and stress relieving of parts is necessary in pipeline welding. Open flame has been one commonly used method. However, it presents some challenges that can negatively impact weld quality and integrity.

Induction

One of the main quality challenges when using open flame for preheating pipe in the field is that a byproduct of the process — water vapor — introduces a hydrogen risk. Using induction heating instead of open-flame heating eliminates that hydrogen risk by keeping moisture out of the process.

Read the full article at: napipelines.com

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