What is Interpass Temperature in Welding?

Interpass temperature is the temperature of the weld area between passes in a multi-pass weld. It is important to control the interpass temperature to avoid welding defects and to ensure the quality of the weld.

Welding is the process of joining two pieces of metal together by heating the metal to its melting point and then cooling it to form a strong bond. The metal is heated by an electric arc or a flame, and the heat is transferred to the metal by conduction.

When welding two pieces of metal together, it is important to control the interpass temperature to avoid welding defects such as:

cracks,
porosity,
and excessive shrinkage.

The interpass temperature should be kept as low as possible to avoid these defects.

What is the minimum interpass temperature?

The minimum interpass temperature is the lowest temperature that can be used between passes without causing welding defects. It is important to control the interpass temperature to ensure the quality of the weld.

What is Max interpass temperature?

The maximum interpass temperature is the highest temperature that can be used between passes without causing welding defects.

How is interpass temperature measured in welding?

Interpass temperature can be measured by using a thermocouple or an infrared camera.

Effect of interpass temperature in welding

The interpass temperature has a significant effect on the properties of the weld. The higher the interpass temperature, the more time the metal has to cool and the stronger the bond will be. However, if the interpass temperature is too high, it can cause welding defects.