Explain the axial spray metal transfer process.
What will be an ideal response?
This process is identified by the pointing of the wire tip from which very small drops are projected axially across the arc gap to the molten weld pool. There are hundreds of drops per second crossing from the wire to the base metal. These drops are propelled by arc forces at high velocity in the direction the wire is pointing. This projection of drops enables welding in the vertical and overhead positions without losing control of transfer. Some axial spray transfers using high current settings can produce a large molten weld pool that is very fluid, and the weld may be difficult to control in out-of-position welds. Because the drops are very small and directed at the molten weld pool, the process is spatter free.
This spray transfer process requires three conditions: argon shielding (or argon-rich shielding gas mixtures), DCEP polarity, and a current level above a critical amount called the transition current.
You might also like to view...
The stride has two phases, stride stance and stride _____.
Fill in the blank(s) with the appropriate word(s).
Ribbon can be single-, double-, or triple-faced
Indicate whether the statement is true or false
For a return to zero data format ________
A) the format is meaningless because there is no return to zero data format B) a single pulse during a bit time represents a 0 and absence of a pulse represents a 1 C) a change during a bit time represents a 1 and no change represents a 0 D) a single pulse during a bit time represents a 1 and absence of a pulse represents a 0
Considering the dimensions of a block face to be 15 5/8" long and 7 5/8" wide and assuming mortar joint width to be 3/8" for both bed joints and head joints, what is the length in inches of 4 block faces and 3 mortar joints?
What will be an ideal response?