10 Welding Process & Design Flashcards
Welding method of in which the parts are to be initially heated by placing directly to fire of a forge
Forge welding
The oldest and still most used source of heat for welding based on a chemical reaction is the burning of
Oxyacetylene
Weld quality is improved by
Shielding gas
In welding when the rod is negative the set up is called
Straight polarity
In welding when the rod is positive, the set up is called
Reverse polarity
The most versatile of all welding processes is
Arc welding
A process more closely associated with pressure than fusion methods of welding and used only for making butt joints between the flat ends of work pieces without filler material
Percussive welding
This process is used primarily for attaching threaded fastening devices in applications as shipbuilding
Stud welding
Used to provide a gaseous shield that flushes away atmospheric gases to prevent oxidation and other gases contaminations of molten metal during the transfer from the rod after deposition in the molten pool
Coatings
Coatings of this are commonly used for direct current welding rods
Sodium salt
Coatings of this are commonly use for alternating current welding rods
Potassium salt
Electrodes that are design with coatings that burn off slowly enough to support the rod at a proper distance above the work for good arc length with the less operator skill
Contact electrodes
Welding method used to weld magnesium, titanium, stainless steel, is
Gas tungsten arc welding GTAW
Welding process of this type have in common the use of a filler material in wire form, which is continuously fed into the weld metal pool, and a shielding gas, or mixture of gases, to provide the atmosphere
Gas metal arc welding GMAW
Argon, helium, and carbon dioxide are used for
Welding gas shields