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A proper weld is produced as the rod is moved across the material, and the flame at the end of the rod cuts a path in the material and that path is refilled by the material of the rod. It flows back into the cut out filling it and joining the materials.
If the welder is too hot, or the persons technique is incorrect, or they are moving the rod to fast, the the path cut by the flame on the end of the rod is not properly filled, and the result is an undercut running along the side of the weld. This undercut causes the weld to be weak and makes it susceptible to failing.
Undercutting is easy to correct and requires practice by the welder to get the flame temperature and the speed right so as to fill the path that is cut until full. The opposite being going to slow and making a humped up weld. A proper weld will be slightly over the surface of the original part, smooth with no pits or holes, and no undercutting.
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What is the welding cert roster code for welding?
roster welding
Name of the type of welding?
One type of welding is tube welding. Another type if mig welding.
Difference between ERW and SAW welding?
SAW welding is a type of arc welding while ERW welding is spot or seam welding. SAW stand for submerged arc welding while ERW stands for electric resistance welding.
What are smaw welding?
smaw welding is sheilded metal arc welding
What is the difference between ultrasonic welding and radio frequency welding?
what is the difference between ultrasonic welding & radiographic welding
What is undercutting in gymnastics?
Undercutting is were you do a skill and you land short, because you did not have the right amount of height or speed in to the skill.
What does the term Undercut mean in welding?
Undercutting is a defect that appearsas a groove in the parent metal directly a;ong the edges of the weld it is most common in lap fillet welds, but can also be encountered in fillet and butt joints. This type of defect is most commonly caused by improper welding parameters, particularly the travel speed and arc voltage
What does oxygen have to do with welding?
Oxygen is an atmospheric gas that is unwanted in almost all welding processes because in it's molten state, metal oxidizes very easily and causes a weak joint. Weld surfaces are protected during the welding process to keep oxygen from contaminating the weld either by a shielding gas, flux, or in torch welding, the torches own exhaust. Occasionally however, oxygen may be added to the shielding gas mix in small amounts to stabilize the arc and reduce undercutting.
What is undercutting in paint?
Painting the edges and corners first.
What does SUST stand for in geography?
slumping, undercutting, saturation, transportation
What is the biggest factor undercutting conservation of wildlife in the us today is?
pollution.
What is the welding cert roster code for welding?
roster welding
Name of the type of welding?
One type of welding is tube welding. Another type if mig welding.
Difference between ERW and SAW welding?
SAW welding is a type of arc welding while ERW welding is spot or seam welding. SAW stand for submerged arc welding while ERW stands for electric resistance welding.
What are smaw welding?
smaw welding is sheilded metal arc welding
What is the difference between ultrasonic welding and radio frequency welding?
what is the difference between ultrasonic welding & radiographic welding
What type of welding machine use in spot welding or resistance welding?
Mainly In spot welding & resistance welding two type welding machines are used :- 1. Air Cooled & 2. water Cooled.
