Abstract: A method for producing a wire mesh mat that consists of intersecting longitudinal and transverse wires and to a mesh welding facility for welding a wire mesh mat from intersecting longitudinal and transverse wires, comprising a clocked supply device for a sheet of longitudinal wires in an X direction, a feed device for transverse wires that lie perpendicular to the longitudinal wires and to a welding portal for welding the wires at their intersections.

Abstract: Longitudinal-wire guide for advancing a number of parallel steel wires in a predetermined X direction, having a multiplicity of fittings, consisting of a lower longitudinal-wire-guiding lever (LW-guiding lever), an upper longitudinal-wire-guiding lever (LW-guiding lever), and a compression spring acting between the two, and having a lateral longitudinal-wire guide (LW guide), wherein the fittings are arranged so as to be steplessly displaceable in relation to one another in a Y direction, which is perpendicular to the X direction, and wherein the multiplicity of fittings are arranged on a carriage which can be driven in the X direction.

Abstract: A grid welding machine operating continuously based on the electrical resistance principle having a stationary longitudinal frame, whereon a horizontal group of parallel longitudinal wires can continuously be moved in the production direction by means of a feeding device, and having a pulling-off device, by means of which the cross wires can be pulled off a coil or rings and fed transversely to the group of longitudinal wires in a transfer device extending transversely, which transfer device can pick up multiple cross wires and convey them one after the other towards the longitudinal wires and bring them into contact with said longitudinal wires in the correct orientation according to the scaling of the cross wires and drop them there, and having electrodes and counter electrodes the weld surfaces of which can be pressed against each other with the points of intersection formed between the longitudinal wires and the cross wires therebetween.

Abstract: A grid welding machine operating continuously based on the electrical resistance principle having a stationary longitudinal frame, whereon a horizontal group of parallel longitudinal wires can continuously be moved in the production direction by means of a feeding device, and having a pulling-off device, by means of which the cross wires can be pulled off a coil or rings and fed transversely to the group of longitudinal wires in a transfer device extending transversely, which transfer device can pick up multiple cross wires and convey them one after the other towards the longitudinal wires and bring them into contact with said longitudinal wires in the correct orientation according to the scaling of the cross wires and drop them there, and having electrodes and counter electrodes the weld surfaces of which can be pressed against each other with the points of intersection formed between the longitudinal wires and the cross wires therebetween.

Abstract: A straightening roller unit for steel material in wire, rod, or strip form that is to be straightened with straightening rollers cooperating in pairs, which are configured to be positioned against the material to be straightened and to be raised from it. The straightening rollers are driven, and the advancement force required for the straightening operation is introduced into the material to be straightened by friction of the straightening rollers.

Abstract: A bending machine for wire mesh mats, which comprise groups of longitudinal and transverse wires intersecting one another at right angles and welded together at intersecting points. The bending machine operates without a mat inverter and makes bending of the longitudinal and transverse wires of the wire mesh mat possible with both a positive and a negative bending angle.

Abstract: A passivate for tungsten alloy electroplates. The passivate includes an effective quantity of CrO.sub.3 in an aqueous bath having a pH of from about 3.5 to about 7.5.