Abstract: Disclosed is a brazed implement comprising a thermally-stable polycrystalline diamond compact, e.g. a compact of self-bonded diamond particles having a network of inter-connected empty pores dispersed throughout the compact, bonded to another of said compact or bonded to a cemented carbide support by a brazing filler metal disposed therebetween. The brazing metal comprises an alloy having a liquidus above about 700.degree. C. and containing an effective amount of chromium. Translational shear strengths exceed about 50 kpsi even upon furnace cycling of the brazed implements and often exceed 90 kpsi. The method for fabricating the brazed implement also is disclosed.

Abstract: Disclosed is a brazed implement comprising a thermally-stable polycrystalline diamond compact, e.g. a compact of self-bonded diamond particles having a network of inter-connected empty pores dispersed throughout the compact, bonded to another of said compact or bonded to a cemented carbide support by a brazing filler metal disposed therebetween. The brazing metal comprises an alloy having a liquidus above about 700.degree. C. and containing an effective amount of chromium. Translational shear strengths exceed about 50 kpsi even upon furnace cycling of the brazed implements and often exceed 90 kpsi. The method for fabricating the brazed implement also is disclosed.

Abstract: An electroplating apparatus for rapidly depositing a metal onto a selected surface of a workpiece, which apparatus comprises an anode having an active surface with a selected shape to combine with the selected surface of the workpiece to define an elongated gap of at least about 0.050 inches, means for supporting this anode in a fixed position to define the elongated gap; solution circulating means for forcing an electroplating solution with metal cations through the gap in a generally closed path at a velocity to exchange electroplating solution in the gap at a rate of at least 25 times per minute; and, means for applying current flow between the selected workpiece surface and the active surface of the anode through the gap at a current density in excess of 2.0 amperes/in.sup.2. The invention also involves the method of using this apparatus to rapidly deposit metal, such as nickel, onto the inner cylindrical surface of a bore on a complex part such as an aircraft landing gear forging.

Abstract: Disclosed is an improved brazed implement comprising a composite compact having an abrasive particle layer bonded to a support and a substrate bonded to the support by a brazing filler metal having a liquidus substantially above 700.degree. C. disposed therebetween. In a preferred embodiment the composite compact comprises a sectioned cylindrical composite compact having a lower support surface opposite the support surface bonded to said abrasive particle layer. The composite compact also has a mating surface. The substrate about its upper end has a pocket which comprises an interior face complementary in shape with the compact lower support surface and a land complementary in shape with the compact mating surface. The compact is brazed to the substrate. The abrasive particle layer is spaced-apart from contact with the substrate a distance adequate to minimize thermal damage thereto during the brazing of the compact to the substrate.

Abstract: Disclosed is an improved fixture assembly for use on an electrode wire EDM apparatus which is adapted to cut a conductive workpiece. Referring to FIG. 2, the improved fixture which can secure a plurality of workpieces 52 comprises master bar 40, which is secured to work supports 30 transversely therebetween, base plate 42 which is removably attached to the master bar at a predetermined location thereof and which has a plurality of equally-spaced support locations upon which each said workpiece rests, locator plate 44 which is removably attached to the base plate at a predetermined location thereof and which has a plurality of equally-spaced recesses of predetermined shape along an edge thereof for a side of each workpiece to be held thereagainst, and a plurality of pre-configured clamps 48 removably attached to the upper side of said locator plate which are tightenable to exert force against the top surface of each workpiece for securing the workpiece in a precise location for cutting.

Abstract: A method and apparatus for soldering aluminum are disclosed. According to the method, the aluminum surface to be soldered is subject to conventional cleaning, then electrolytic cleaning and electrolytic etching, followed by electroplating a very thin layer of nickel on the cleaned and etched surface. The electrolytic cleaning, etching, and plating operations are all carried out by the use of a brush plating tool having an insulated handle portion, to one end of which a wire electrode encased in a porous covering composed of polyester felt is secured.After the plating has been completed, the surface may be soldered with conventional soft solders and non-corrosive fluxes, using conventional soldering techniques.

Abstract: Elevated temperature process for deoiling spent crystalline clay from the refining of glyceride esters ("oils") wherein a primary dispersion of such spent clay and aqueous alkali are mixed under pH conditions effective for removing a substantial amount of oily phase from such clay in the form of glyceride esters, thus-treated clay is separated and redispersed with additional aqueous alkali under pH conditions effective for saponifying at least a substantial fraction of the remaining glyceride esters present, then the treated clay is separated from the redispersion.

Abstract: Process for washing fatty acids from spent clay, such as spent bleaching clay, with aqueous alkali at elevated temperature is improved by establishing and maintaining the mixture of aqueous phase and fatty acid at a pH between about 5 and about 6.5.