Method of bonding metal workpieces

Claim 1

THE METHOD OF BONDING METAL WORKPIECE BY USING A FLYWHEEL TO CONTROL THE PROCESS AND COMPRISING STORING IN A ROTATING FLYWHEEL COUPLED WITH A DRIVING A FIRST WORKPIECE ALL OF THE ENERGY REQUIRED TO BOND THE WORKPIECES, APPLYING PRESSURE TO FORCE A SURFACE OF SAID FIRST WORKPIECE INTO ROTATIONAL RUBBING CONTACT WITH A SURFACE OF A SECOND WORKPIECE, CONTINUING SAID ROTATIONAL RUBBING CONTACT TO HEAT SAID SURFACES TO A PLASTIC CONDITION AND A BONDABLE TEMPERATURE AT THE PRESSURE APPLIED UNTIL SAID SURFACES BOND AND THE STORED ENERGY OF THE FLYWHELL IS EXPENDED, AND PREDETERMINING THE DURATION OF SUCH ROTATIONAL RUBBING CONTACT BETWEEN SAID SURFACES BY THE AMOUNT OF ENERGY STORED IN THE FLYWHEEL.

Claim 2

A METHOD OF BONDING ENGAGED SURFACES OF METAL WORKPIECES ACROSS A COMMON INTERFACE INCLUDING, ENGAGING THE SURFACES IN ROTATIONAL RUBBING CONTACT UNDER PRESSURE AND AT A SPEED ABOVE A CRITICAL SPEED FOR A SUFFICIENT AMOUNT OF TIME TO HEAT THE INTERFACE TO A PLASTIC CONDITION AND A BONDABLE TEMPERATURE, DECREASING THE SPEED BELOW THE CRITICAL SPEED TO FROM THE BOND AS THE SPEED PASSES THROUGH THE CRITICAL SPEED, AND WORKING THE BOND ZONE AT A SPEED BELOW THE CRITICAL SPEED AND WHILE THE MATERIAL IN THE BOND ZONE IS PLASTIC BY TURNING THE WORKPIECES THROUGH MORE THAN ABOUT 1/4 REVOLUTION OF RELATIVE ROTATION TO FORGE AND TO EJECT COHERENT FLASH FROM THE BOND ZONE.