18-03-2011, 12:32 PM
PRESENTED BY:
SAJIN M V
[attachment=10483]
FRICTION WELDING
The friction welding process is a solid state welding process where heat is imparted to the work pieces by mechanical means via the frictional rubbing of the mutual pieces together under a load and accompanied by deformation of the parts.
Definition of Friction Welding
• Friction welding is a solid state joining process that produces coalescence by the heat developed between two surfaces by mechanically induced surface motion.
Categories of Friction Welding
• Continuous drive
• Inertia
Continuous Drive Friction Welding
• One of the workpieces is attached to a rotating motor drive, the other is fixed in an axial motion system.
• One workpiece is rotated at constant speed by the motor.
• An axial or radial force is applied.
• The work pieces are brought together under pressure for a predeter-mined time, or until a preset upset is reached.
• Then the drive is disengaged and a break is applied to the rotating work piece.
Friction Welding Joint Design
• The joint face of at least one of the work piece must have circular symmetry (usually the rotating part).
• Typical joint configurations shown at right.
Friction Stir Welding
• Parts to be joined are clamped firmly.
• A rotating hardened steel tool is driven into the joint and traversed along the joint line between the parts.
• The rotating tool produces friction with the parts, generating enough heat and deformation to weld the parts together.
SAJIN M V
[attachment=10483]
FRICTION WELDING
The friction welding process is a solid state welding process where heat is imparted to the work pieces by mechanical means via the frictional rubbing of the mutual pieces together under a load and accompanied by deformation of the parts.
Definition of Friction Welding
• Friction welding is a solid state joining process that produces coalescence by the heat developed between two surfaces by mechanically induced surface motion.
Categories of Friction Welding
• Continuous drive
• Inertia
Continuous Drive Friction Welding
• One of the workpieces is attached to a rotating motor drive, the other is fixed in an axial motion system.
• One workpiece is rotated at constant speed by the motor.
• An axial or radial force is applied.
• The work pieces are brought together under pressure for a predeter-mined time, or until a preset upset is reached.
• Then the drive is disengaged and a break is applied to the rotating work piece.
Friction Welding Joint Design
• The joint face of at least one of the work piece must have circular symmetry (usually the rotating part).
• Typical joint configurations shown at right.
Friction Stir Welding
• Parts to be joined are clamped firmly.
• A rotating hardened steel tool is driven into the joint and traversed along the joint line between the parts.
• The rotating tool produces friction with the parts, generating enough heat and deformation to weld the parts together.
