In-situ Buttering welding

In-situ Buttering is deposition of a layer of weld metal on the susceptible surface (‘buttering’) prior to filling the joint ensures that strains due to the weld passes in contact with the steel are low.

Or it is special buttering type different from the others – See Buttering vs Buildup in welding

lamellar tearing.png
In-situ buttering to avoid lamellar tearing

The deposition of low strength weld metal is deposited firstly on the susceptible plate before filling the joint with another electrode. However, before adopting this technique, design calculations should be carried out to ensure that the overall weld strength would be acceptable.


Some O&G project has allowed using of In-situ buttering for exceed fit-up gap spacing after big-block erection. There’s no chance or high cost, or danger of falling to remove the structure. In this case, the In-situ Buttering is considering as Buildup welding because only one type of electrode is used for closing the gap.

in situ buttering.png


6 thoughts on “In-situ Buttering welding

  1. Dear Sir / mam, My name is Nitendra Ravi Khajnekar & I am a student of Institute of Shipbuilding Technology, study in 7th semester Of shipbuilding program. I am at my final year where I & my group is working on designing a LNG bunker barge as an final year project. So with your due respect will you able to guide us in our project. I have attached a file which will let you know what we are aiming for.I hope you will reply be back with your suggestions.

    Thank you


    1. Where does the vessel will operate? which will define a regulation of construction, fire safety standard, maneuvering, characteristic, propulsion systems selections, The ship has lots of system that i have detailed in this blog “Shipbuilding knowledge A-Z”, see in the typical shipbuilding engineering fields, you can select what your team will focus on design. At university level, it’s normally requiring your abilities of selecting a proper vessel structure, lines generaion and ship hydrostatic calculation. ship globle strength report and final midship section at ultimate value, saving space and increasing shipspeed or saving propulsion power, engine selection, propeller design…, and further extend to bridge sight calculation, pressure vessel thickness calculation, insulation and fire safety on LNG product as per codes and relulation at service area. Let find your most interested and propose to your professor. Design a whole ship from basic to construction and operation will need at least 200 engineers and over. be wise in your projects, which may lead your future career in correct way.


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