Discontinuity/ Defects
What is that
Procedures
Why
BONUS
100
What is a weld Defect?
Any flaw that COMPROMISES the usefulness of a weldment.
100
Slag Inclusion
100
What is the acronym for Direct Current Electrode Positive
DCEP
100
Name 2 Reasons you get porosity
Entrapped gas "gas pockets" , insufficient gas coverage , dirty metal
100
' & " stand for what
Feet and inches
200
What is a Discontinuity?
Any abnormality of a weld.
200
Porosity
200
What does DCEN stand for?
Direct Current Electrode Negative
200
why does my rod get stuck
not enough amperage / improper striking technique
200
What is .5 of a foot
6"
300
Can a Discontinuity be a Defect?
Yes
300
Lack of Fusion
300
What welding Procedure Is notorious for Porosity?
MIG / SMAW
300
Why is it important to stack welding beads properly?
To insure a solid weld
300
What types of material can not be cut with oxy fuel process?
NONE FARRIS METAL
400
Is a Defect reparable?
Yes
400
Over Lap / Cold Roll / Cold Lap
400
What Is the rule on selecting the strength of the rod to weld with?
Equal to or Greater than the tinsel strength of base material.
400
why am I getting excessive spatter.
Long arcing
400
what does FCAW
Flux Core Arc Welding
500
Can you fail a weld test if you only have Discontinuities and no Defects??
Yes, To many Discontinuities Is considered a Defect.
500
Name 3 Defects
Lack of "root" Fusion / Excessive "Root" Penetration / Lack of penetration
500
Where can I find out these things while building a project?
Rod Type
Polarity
Parameters ( Amperage range )
WPS (Welding Procedure Specification)
500
5 things that cause undercut.
work piece to hot , to high of amperage , travel speed to fast , long arcing , wrong rod angle
500
Solve the problem on the board. What would the pipe in the middle need to be cut at?
90 degree angle is 4.25" on center