Abstract: The disclosure relates to a process for the fabrication of low cost dual property turbine rotors having blades that are diffusion bonded to a blade ring that is simultaneously diffusion bonded to a central hub.

Abstract: A method of welding, soldering or fusing a cast iron member to another member of cast iron or other metal, wherein the cast iron member is dipped in a hot concentrated aqueous solution of chromic acid, and washed with water before it is joined to the other member.

Abstract: A method of treating filaments in order to increase their wettability by molten magnesium or an alloy thereof. The filaments are treated by coating them with particulate molybdenum trioxide, chromic oxide, ferric oxide or nickel oxide and subsequently infiltrating them with molten magnesium or an alloy thereof.

Abstract: The disclosure relates to a turbine rotor and method of manufacture thereof. A plurality of blades having dovetails at the radially inner ends thereof are arranged in a circumferentially spaced circular array. A metallic hub is cast about the dovetails of said blades which are metallurgically bonded by the operation. Alternatively, the blades may be joined to the hub thereafter by an electron beam weld that extends axially to the rotor.

Abstract: The disclosure relates to a process for the fabrication of low cost dual property turbine rotors having blades that are mechanically retained and a blade ring that is permanently bonded to a central hub.

Abstract: A method of fabricating a lighter composite master brake cylinder is disclosed along with the resulting product. A seamless steel tube of critical thickness, closed at one end, and treated by acid etching on its exterior, is oriented vertically within a mold cavity. The tube is pretreated to contain critically dimensioned punched and coined openings for brake fluid filling and fluid delivery. Openings in the cast body are defined by pin cores aligned with the tube openings and are dimensioned to separate the edge of the tube openings from the cast opening. The tube is supported by a plug extending snuggly into the interior of said tube, said plug being joined at one end to the die walls; the cores are also supported by suitable attachment to the die walls.