Welding standard root face.

In preparation for base metals, what is the standard bevel required?

These are generated in a welding job due to the faulty or poor technique used by the inexperienced or unskilled welder or due to fundamental difficulties in the welding operation.

A weld defect occurs when the depth of the welded joint is insufficient.

Is defined as the distance from the base plate top surface to the maximum extent of the weld nugget.

Is a group of small voids and blowholes that are comparatively bigger isolated holes or cavities.

These are small metal particles that are thrown out of the arc during welding and get deposited on the base metal around the weld bead along its length.

It is the change in the shape and difference between the position of two plates before and after welding due to the temperature gradient present at various points along the joints.

It is the change in the shape and difference between the position of two plates before and after welding due to the temperature gradient present at various points along the joints.

It is a kind of weld defect which forms a groove in the parent metal along with the sides of the weld bead.

It reduces the thickness of the plate and also reduces the strength of the weld.

It is due to the tearing of the grain boundaries of weld metal before complete solidification has taken place and the metal is still in the plastic state. 

A shallow fusion between weld metal and base metal.

It is due to excessive heat input and creates a hole.

What does C in CLAMS mean?

What does L in CLAMS mean?

What does A in CLAMS mean?

What does M in CLAMS mean?

What does S in CLAMS mean?

What type of welding electrode is used for root pass?

It is called the first pass in groove welding. 

It is called the last pass in groove welding. 

It is called the second pass in groove welding. 

What is the gap used in metal preparation for groove welding?

What angle is used in beveling base metals for groove welding? 

It is used to protect arms from falling flux or hot sparks.

The following are external defects; except

Using a larger electrode diameter can cause melt-through/ burn through.

Traveling too fast will make the bead face narrow with pointing ripple.

If the current is too low, the electrode melts too fast.

Quality or sound weld is the result of correct current, constant voltage, travel speed, electrode angle, and correct electrode size.

Welding is the process of joining together two pieces of metal so that bonding takes place at their original boundary surfaces.

Electrode circumference is based on the thickness of the base metal, the welding position, and the type of joint to be welded.

Each type of electrode has recommended amperage ranges for optimum performance

High amperage could also cause the electrode coating to overheat and break down.

Arc length is the distance from the tip of the electrode core wire to the electrode handle.

Defects that occur on the upper surface of the welded work

Defects that occur under the surface of the welded work