What is Buttering in Welding?

Buttering is a form of surfacing in which one or more layers of weld metal are deposited on the surface of base metal. The purpose of buttering is to provide a suitable transition weld deposit for subsequent completion of the butt weld on the groove face of one member.

Buttering is often used when welding dissimilar metals, as it provides a layer of high alloy weld metal that can act as a barrier between the two metals and prevent them from bonding together. This can be beneficial when welding two metals that have different expansion rates, as it prevents one metal from expanding into the other and causing cracking.

Buttering can also be used to improve the appearance of a weld, as it can be used to build up a raised bead that can be sanded down to create a smooth, flush surface.

In general, buttering is a simple process that can be used to improve the quality of a weld. However, it is important to ensure that the weld metal used for buttering is compatible with the base metals being joined, as using an incompatible metal can lead to problems such as cracking or poor bonding.

Hardfacing, cladding in welding

Hardfacing is often used to protect surfaces from wear or abrasion or to improve the hardness of a metal. Cladding is used to improve the corrosion resistance of a metal.

What is meant by weld overlay?

Weld overlay is a process in which a layer of weld metal is deposited on the surface of a base metal. The purpose of weld overlay is to improve the properties of the base metal, such as resistance to wear or corrosion.

What is the first pass of a weld joint called?

The first pass of a weld joint is called the root pass. The purpose of the root pass is to fill the space between the two pieces of metal being joined.

Related Links

Urban Dictionary: Buttering
Buttering | Definition of Buttering at Dictionary.com
Buttering – definition of buttering
butter somebody ? up | meaning of butter somebody ? up in Longman Dictionary of Contemporary English | LDOCE
BUTTERING | definition in the Cambridge English Dictionary