One Site Material Analysis

In a world where downtime becomes increasingly expensive due to the large capacity of modern turbines, new repair methods that minimises the repair procedure are much requested. Here we can deliver a new service that delivers a huge value: on site material analysis.

For improved delivery of our welding repairs

It is crucial for us to know the carbon equivalent of the specific steel component to determine its weldability (the higher the carbon equivalent, the less weldable the structure is, and in some cases, welding is not a possible option).

But we also use the carbon equivalent to determine how much pre-heating of the component is needed in order for the welding to last. Wrong heating can potentially result in a repair that does not last as long as it should.

How easily it is done

Previously, we have sent biopsies to external institutes to test the carbon density in a lab. A process that involved a lot of unwanted waiting for the test result. Now we have a solution for these cases, with our own tool, that delivers a precise carbon material analysis directly on site, without any delay. The tool we use to test carbon equivalents on site, delivers with a precision that is very close to previoius lab results and therefore within an acceptible range, to perform a correct assesment and pre-heating of steel before welding.

1. The material analysis is made on the material in question (steel structure).

2. Based on the result, we can now assess whether the material is weldable and, in this case, what the correct pre-heating is, based on the carbon level of the material.

3. We continue the process with the execution of the repair.

4. After completing the repair, we perform a post-inspection and recommendation for a future follow-up inspection of the repair. The process is completed with a documentation of the procedure.

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What is carbon equivalent analysis?

A carbon equivalent (CE) analysis is a metallurgical calculation used to determine the weldability and hardenability of steel or cast iron by converting the content of various alloying elements (like manganese, chromium, and nickel) into a comparable percentage of carbon. It predicts the likelihood of cold cracking, with higher CE values indicating lower weldability

Why is a carbon equivalent analysis important before welding?

It is important to know the carbon equivalent, in order to understand the weldability of specific metallic material. If welding is performed without knowing the carbon equivalent, a welding procedure will not last as long as it should, due to wrong pre-heating of the material. In some cases, such as with cast iron, the carbon level in the material is too high, and therefore, welding is not a recommended solution.

Is it possible to

At 3WIS, we specialize in effective blade repair solutions. Our team assesses the damage through a detailed inspection process, followed by careful planning and execution of the repairs. We address issues like surface erosion, cracks, and delamination to restore the performance and structural integrity of the blades.

One Site Material Analysis

For improved delivery of our welding repairs

How easily it is done

From material analysis to repair

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FAQ: wind Turbine Blade Repair

What is carbon equivalent analysis?

Why is a carbon equivalent analysis important before welding?

Is it possible to

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