Abstract: Very low-pore, thick nitride cases may be obtained in a short time during a gas nitriding process in accordance with the invention. This process includes nitriding in a gaseous mixture containing about 5 to 95% by volume ammonia and about 95 to 5% by volume nitrogen. The nitriding process is most preferably carried out at essentially a constant pressure above about 0.2 MPa.

Abstract: For the loading of evaporators in vapor coating plants with shaped pieces made of vapor coating materials there is used an apparatus which is characterized by rolls having indentations for receiving the shaped pieces, centered on a rotatable shaft and surrounded by a closely fitting housing by a moving part having gradual feed fastened on the shaft and by a swivelable shaft moveable into a resting position and into a loading position, on which there is mounted the shaft having rolls via fastening elements. Thereby the housing of the rolls is provided with a recess corresponding to the shaped pieces, which is located in the loading position directly above the evaporator. Because there is only a short time loading process there is no need to cool and there is avoided influencing of the vaporization by the action of moving.

Abstract: A measuring head 1 which contains in a shielding housing 3 a measuring chamber 5 with a surface barrier-layer detector 9 is provided for measuring the noble gas activity concentration and the aerosol activity concentration. The gas whose activity concentration is to be measured is compressed and introduced into the measuring chamber 5. Due to the pressure increase of the gas, the volume of the measuring chamber 5 and, therefore, the weight of the shielding housing 3 can be reduced.

Abstract: Apparatus is disclosed for partial electrolytic coating of individual metal parts, wherein a conveying chain, running over a pair of rolls, has individual holding elements joined together by pins. The holding elements have a contact cover plate and clamping cover plate with spacing means therebetween. Spring means is provided which is adapted for forcing the contact cover plate and clamping cover plate toward each other.