Welding

Question 1

__________ is a process of controlling the temperature of deposited weld metal between specified limits during multipass welds.

Answer 1

Interpass temperature control

Question 2

For interpass temperature control, the lower limit is usually the same as the __________ temperature, and accomplishes the same functions.

Answer 2

minimum preheat

Question 3

If _________ is not used where it should be, excessive grain growth of the weld metal and HAZ can adversely affect the impact properties of carbon and alloy steel weldments.

Answer 3

Interpass temperature control

Question 4

If _________ is not used where it should be, carbon and low-alloy steels can experience precipitation of nitrides (called blue embrittlement) which adversely affects their impact properties.

Answer 4

Interpass temperature control

Question 5

If _________ is not used where it should be, austenitic stainless steels (such as the 300 series SSs) can lose corrosion resistance due to excessive sensitization during slow cooling.

Answer 5

Interpass temperature control

Question 6

If _________ is not used where it should be, cColumbium stabilized austenitic SSs (such as Type 347 SS, Incoloy 825, and Alloy 20) are susceptible to solidification cracking (also called hot-short cracking) during slow cooling.

Answer 6

Interpass temperature control