Abstract: The disclosure relates to a system and a method for monitoring the state of optical elements of a device for laser material processing. According to the present disclosure a detailed monitoring of the state of optical elements of a device for laser material processing takes place by monitoring properties of laser radiation in the direction of an optical fiber or laser radiation entering a laser processing head connected to the laser source and these measurements, which can be performed during the processing process. The device according to the present disclosure has optical sensors for measuring the intensity and respective current laser power.

Abstract: The invention relates to an electric hot wedge (1) for a welding device for the seam-like connecting of plastic webs, having a welding wedge (2) and a welding wedge attachment (3) made of metal, wherein the welding wedge (2) comprises at least one electric heating resistor (13) having a heating conductor (16), which is bonded to a ceramic carrier (15) as a conductive layer (12) and is preferably protected by a ceramic cover layer. According to the invention, the welding wedge attachment (2) has a support structure (28) made of metal on the side thereof, which substantially extends across the entire length and/or width of the electric heating resistor (16) and which mechanically stabilizes the carrier (15) of the heating resistor (16).

Abstract: The invention relates to an electric hot wedge (1) for a welding device for the seam-like connecting of plastic webs, having a welding wedge (2) and a welding wedge attachment (3) made of metal, wherein the welding wedge (2) comprises at least one electric heating resistor (13) having a heating conductor (16), which is bonded to a ceramic carrier (15) as a conductive layer (12) and is preferably protected by a ceramic cover layer. According to the invention, the welding wedge attachment (2) has a support structure (28) made of metal on the side thereof, which substantially extends across the entire length and/or width of the electric heating resistor (16) and which mechanically stabilizes the carrier (15) of the heating resistor (16).

Abstract: The process is to be used to connect a component made from a shape memory alloy to a thin component made from steel material or a copper material. The intention is to provide a spot-welding technique using electrodes made from a Cu alloy. The intention is to establish a current intensity of over 1000 A, preferably over 2000 A, at an I2t value of over 5000 A2s, preferably over 8000 A2s, and a pressure of at least 30 MPa, preferably 80 MPa.