QG-109
QG-109.1 GENERAL
Definitions of the more common terms relating to material-joining processes are defined in QG-109.2. There are terms listed that are specific to ASME Section IX.
QG-109.1 GENERAL
Definitions of the more common terms relating to material-joining processes are defined in QG-109.2. There are terms listed that are specific to ASME Section IX.
QG-109.2 DEFINITIONS
arc seam weld: a seam weld made by an arc welding process.
arc spot weld: a spot weld made by an arc welding process.
arc strike: any inadvertent discontinuity resulting from an arc, consisting of any localized remelted metal, heat‐affected metal, or change in the surface profile of any metal object. The arc may be caused by arc welding electrodes, magnetic inspection prods, or frayed electrical cable.
arc welding: a group of welding processes wherein coalescence is produced by heating with an arc or arcs, with or without the application of pressure, and with or without the use of filler metal.
as‐brazed: adj. pertaining to the condition of brazements after brazing, prior to any subsequent thermal, mechanical, or chemical treatments.
as‐welded: adj. pertaining to the condition of weld metal, welded joints, and weldments after welding but prior to any subsequent thermal, mechanical, or chemical treatments.
backgouging: the removal of weld metal and base metal from the weld root side of a welded joint to facilitate complete fusion and complete joint penetration upon subsequent welding from that side.
backhand welding: a welding technique in which the welding torch or gun is directed opposite to the progress of welding.
backing: a material placed at the root of a weld joint for the purpose of supporting molten weld metal so as to facilitate complete joint penetration. The material may or may not fuse into the joint. See also retainer.
backing gas: a gas, such as argon, helium, nitrogen, or reactive gas, which is employed to exclude oxygen from the root side (opposite from the welding side) of weld joints.
base metal: the metal or alloy that is welded, brazed, or cut.
bead-up cycle: part of the butt-fusing process to ensure complete contact between the heater surface and the pipe ends.The bead-up cycle begins when initial contact of the pipe ends to the heater is made at butt-fusing pressure until an indication of melt is observed around the pipe circumference.
bond line (brazing and thermal spraying): the cross section of the interface between a braze or thermal spray deposit and the substrate.
braze: a joint produced by heating an assembly to suitable temperatures and by using a filler metal having a liquidious above 840°F (450°C) and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary action.
brazer: one who performs a manual or semiautomatic brazing operation.
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Ref. from ASME Section IX..... Thanks for the curtsy
arc seam weld: a seam weld made by an arc welding process.
arc spot weld: a spot weld made by an arc welding process.
arc strike: any inadvertent discontinuity resulting from an arc, consisting of any localized remelted metal, heat‐affected metal, or change in the surface profile of any metal object. The arc may be caused by arc welding electrodes, magnetic inspection prods, or frayed electrical cable.
arc welding: a group of welding processes wherein coalescence is produced by heating with an arc or arcs, with or without the application of pressure, and with or without the use of filler metal.
as‐brazed: adj. pertaining to the condition of brazements after brazing, prior to any subsequent thermal, mechanical, or chemical treatments.
as‐welded: adj. pertaining to the condition of weld metal, welded joints, and weldments after welding but prior to any subsequent thermal, mechanical, or chemical treatments.
backgouging: the removal of weld metal and base metal from the weld root side of a welded joint to facilitate complete fusion and complete joint penetration upon subsequent welding from that side.
backhand welding: a welding technique in which the welding torch or gun is directed opposite to the progress of welding.
backing: a material placed at the root of a weld joint for the purpose of supporting molten weld metal so as to facilitate complete joint penetration. The material may or may not fuse into the joint. See also retainer.
backing gas: a gas, such as argon, helium, nitrogen, or reactive gas, which is employed to exclude oxygen from the root side (opposite from the welding side) of weld joints.
base metal: the metal or alloy that is welded, brazed, or cut.
bead-up cycle: part of the butt-fusing process to ensure complete contact between the heater surface and the pipe ends.The bead-up cycle begins when initial contact of the pipe ends to the heater is made at butt-fusing pressure until an indication of melt is observed around the pipe circumference.
bond line (brazing and thermal spraying): the cross section of the interface between a braze or thermal spray deposit and the substrate.
braze: a joint produced by heating an assembly to suitable temperatures and by using a filler metal having a liquidious above 840°F (450°C) and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary action.
brazer: one who performs a manual or semiautomatic brazing operation.
See more Definitions <<<<< Click Here >>>>>
Ref. from ASME Section IX..... Thanks for the curtsy
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