Give your carbon steel vessel the corrosion protection of our weld overlay services.
What are some benefits of weld overlay to your companies? Firstly, it gives your pressure vessels and piping better corrosion and/or wear resistance, which greatly improves their life span. This saves you money in the long run! Further, it can also save costs on the vessel itself, because you can avoid using a high-priced alloy on the full thickness of the vessel. This is especially true for thick, high-pressure units and piping.
As a weld overlay cladding company, we have a wide range of experience, especially for use on vessels. In other words, we have worked with a wide array of different overlay / base metal combinations. For example, we have applied 347 stainless on 2 ¼ chrome (P22) base, Inconel 625 on carbon base, and 316L stainless on carbon base to name a few.
Our primary method Electroslag Strip Cladding (ESW). However, when the diameter is too small for ESW, we use either SAW, TIG, or GMAW; much depends on the material and shape.
By using the ESW method and the other arc welding methods, we can make one of the strongest bonds between layers, when compared to other cladding methods. Overlay welding can also speed up completion time, because it can often be performed with materials that are in stock. We design, build, and strip clad your pressure vessel, flanges, or plate (vessel components) all in-house.
Further, we have experience in using explosion bonding cladding. It is also known as explosion cladding or explosion welding. So, whether you prefer to use explosion bonded or roll bonded clad plate for your vessel or piping, we have you covered! As a reminder, even if you go with using explosion or roll bonded clad plate, there is still a great deal of weld overlay to be done. This is because the vessel still needs overlay at the joints and at the nozzle ID’s and faces.
One advantage over other weld overlay companies is that we own PMI testing equipment. Therefore, we ensure that the cladding meets your desired chemistry at all stages of production. We also can perform liquid penetrant testing, which checks for the smallest of cracks or holes. And further, we can provide bond strength tests. In short, these tests help assure reliable and lasting performance.
It is acheived by adding welded layers to a parent metal (base metal). This is distinct from general welding, which is, in it’s most basic form, the joining of two pieces of metal together. Simply put, it is true name; a layer of weld metal is overlaid on a base metal. In most cases, a layer of corrosion resistant metal covers a lower grade base metal. Or, you can use it for hardfacing. What is that? Hardfacing is when you clad a softer base metal with a layer of harder metal, which protects against erosion. You can also use it for base metal build-up. This is needed when corrosion or erosion thins out the base metal thickness. Layers are added to bring the base metal back to it’s original thickness.
Electroslag Strip Cladding (ESW) is the preferred method of most weld overlay companies. This is especially the case when large areas of clad are being applied to a plate or other shapes that allow for it. So, what are some of the benefits? To name a few, this type of overlay has very high deposition rates, low dilution, and low base metal penetration. Another great feature is that most chemistries can be met in one pass (or layer), which makes the application very efficient. Further, it has a wide range of strip / flux combos available to meet your chemistry needs. And lastly, it has a beautiful cosmetic appearance. We are happy to help you choose the best type of weld overlay cladding services for your project.
Didon’s Mechanical is a family of companies, which includes Didion Vessel, Didion Autoclave, and Didion Separator. All are owned and operated by the Didion family in Belleuve, Ohio USA.
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