AWS C6.2-C6.2M pdf free download

AWS C6.2-C6.2M pdf free download.Friction Welding of Metals.
hybrid friction welding. A variation of friction welding in which the energy required for welding is supplied by more than one source.
inertia friction welding. A variation of friction welding in which the energy required to make the weld is supplied by the stored rotational kinetic energy of the welding machine.
linear reciprocating friction welding. A variation of the friction welding process in which the relative motion between the faying surfaces is linear and reverses direction repeatedly during the friction phase.
orbital friction welding. A variation of the friction welding process which produces an elliptical motion between the faying surfaces.
plunge. The act of pushing the FSW tool into the material to be stirred.
prebond. Thc distance bewecn the faying surfaces immediately prior to the application of the friction welding force.
radial friction welding. A variation of the friction welding process which can be used to join circular sections where it is undesirable to rotate the parts to be joined, or to join collars and bands to the inside or outside of cylindrical sections. In this variation the applied friction welding and forge forces between the laying surfaces are normal to the axis of rotation.
second friction force. The compressive force applied to the laying surfaces during the second friction phase.
second friction phase. The portion of the friction welding cycle which, in conjunction with the first friction phase, comprises the friction phase. This lerm has meaning only when the optional first friction phase is used.
second friction time. The duration of the second friction phase.
spin welding. Nonstandard term. See friction welding.
surface velocity. The angular velocity measured at the outer periphery of the laying surfaces.
travel speed. The rate at which the FSW tool translates through the material.
unit energy. The stored flywheel energy of an inertia friction welder divided by the area of the laying surfaces.
unit force. The conipressive force applied to the faying surfaces divided by the area of the faying surfaces.
5.2 Equipment Requirements
5.2.1 A machine capable of controlling (he friction speed. applied forces, and/or displacement rates/distances such that it can produce welds made to a qualified welding procedure specification (WPS) within the tolerances established is considered qualified.
5.2.2 The machine shall he equipped with an automatic control system which sequentially completes the welding cycle without welding operator intervention after initiation.
5.2.3 Systems that control machine-operating variables shall he calibrated according to the machine manufacturer’ s recommendations. The maximum interval between calibrations shall he twelve (12) months. The calibration accuracy and precision shall be to a level required to produce parts within tolerances established by the WPS.
5.2.4 The machine shall be set-up and verified to he in conformance with the WPS by the appropriately trained personnel as determined by the Engineer.
5.3 Material Requirements. Material properties necessary to fulfill the engineering drawing requirements should he specified. Typical properties that may be specified are the following:
1. The M-Number as shown in AWS B2. 1, Spectlcalion for 1Velding Procedure and Peiformance Qualification:
2. The material heal treatment condition;
3. Metallurgical cleanliness: and/or
4. Maximum allowable discontinuities.
Other material requirements may be controlled by supplementary specifications.AWS C6.2-C6.2M pdf download.