Abstract: A machining segment for a machining tool which is rotatable in a direction of rotation about an axis of rotation includes an underside where the machining segment is connectable to a basic body of the machining tool by the underside. A machining zone has a matrix material and a plurality of first hard material particles where the plurality of first hard material particles are disposed in the matrix material in accordance with a defined particle pattern. Each of the plurality of first hard material particles has a respective projection in relation to the matrix material on an upper side of the machining segment. The projection of at least one of the plurality of first hard material particles is greater than 400 ?m.

Abstract: The invention relates to a tool for an ultrasonic welding device, wherein a contact face of a carrier body (1) produced from a metal facing a component to be welded is provided with a diamond coating (3). To improve the durability, it is proposed in accordance with the invention for the diamond coating to be produced by means of CVD methods and to have a thickness (D2) in the range from 0.5 to 20 ?m.

Abstract: The invention relates to a tool for an ultrasonic welding device, wherein a contact face of a carrier body (1) produced from a metal facing a component to be welded is provided with a diamond coating (3). To improve the durability, it is proposed in accordance with the invention for the diamond coating to be produced by means of CVD methods and to have a thickness (D2) in the range from 0.5 to 20 ?m.

Abstract: The invention relates to a self-supporting CVD diamond film comprising a plurality of diamond layers (8) lying one over the other, wherein a lower side of each diamond layer (8) is made of diamond having a first average crystal size of 2 to 50 nm, wherein the average crystal size increases within the diamond layer (8) from the lower side to an upper side of the diamond layer (8), and wherein a second average crystal size in the area of the upper side is 50 to 500 nm.