Abstract: In the manufacture of rotating anodes for X-ray tubes consisting of a basic body made of high-melting metal or its alloys and one or a plurality of graphite parts, the graphite parts (3) are provided with grooves (5) and boreholes (6) before the individual parts are joined by soldering. The grooves (5) mainly having a semicircular cross section are provided in the surface (4) of the graphite parts (3) to be joined by soldering. The boreholes (6) extend through the graphite parts (3) and feed into the grooves (5) approximately vertical to the graphite surface (4). Excessive solder and gases formed during soldering may flow or escape by way of the grooves and boreholes, which produces an improved soldered joint with increased adhesive or bonding strength between the basic body and the graphite parts.

Abstract: A disposable insert is retained in a toolholder recess by a downwardly biased pin element having a head part which abuts laterally against the insert hole wall and against two points of a projection extending into the insert hole.

Abstract: Cemented carbide elements with working faces bearing a thin multilayer or stratified coating of nonuniform composition of wear-resistant materials exhibit superior wear-resistance for improved performance and service life under severe service conditions as in the case of inserts for cutting tools and wire drawing dies.

Abstract: A rotating X-ray target comprised of a graphite body having brazed thereon a metal band focal track or layer in which the configuration of the surfaces of the graphite base and the metal layer corresponds to an annular segment of a spherical surface and method for preparing same.

Abstract: Cemented carbide elements with working faces bearing a thin multilayer or stratified coating of nonuniform composition of wear-resistant materials exhibit superior wear-resistance for improved performance and service life under severe service conditions as in the case of inserts for cutting tools and wire drawing dies.

Abstract: An X-ray target, preferably a rotating target is disclosed in which at least part of the target surface outside the focal area contains a coating layer of a mixture composed of molybdenum, tungsten, niobium or tantalum, and from 20-60 volume percent of a ceramic oxide.

Abstract: A disposable insert is positioned on a pin in a stepped recess of a cutting tool shank. A slidable wedge positioning block and clamp member are carried on a screw at the rear portion of the stepped recess. Tightening the screw causes the clamp to clamp the top of the insert and the positioning block to wedge the insert forwardly against the pin to securely hold the insert.

Abstract: A target for an X-ray tube is coated outside of the area impinged on by electrons with a layer of thermally emissive material comprising 6-20% by weight TiO.sub.2 and 80-94% Al.sub.2 O.sub.3. The coating is applied for example by plasma flame spraying.

Abstract: Disclosed are improved rolls for use in elevated temperature rolling operations and a method for making said rolls. At least a portion of said rolls comprises a coated surface, said coating comprising carbides, carbonitrides, nitrides, borides or oxides of at least one member of the group consisting of the Group III to Group VI elements of the Periodic Table.

Abstract: An improved thermocouple sensor is disclosed comprising a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys and terminating in ends adapted for thermocouple application, and a metal mass of tungsten or molybdenum intimately contacting the terminal wire ends so as to form an electrical connection therebetween and means for making same.

Abstract: A novel material is disclosed that is useful for the manufacture of durable metal articles which have differently colored surface zones.

Abstract: A novel cermet material and a process for its production is disclosed. The cermet material is characterized by a surface zone which is substantially free of metal.