Lasermach® offers an exceptional choice of CNC cutting machines and technologies for processing of metal plate, sheet and tube materials.
Our cutting machines include a full range of contemporary cutting technologies – plasma, laser, oxyfuel, waterjet, 3D mill – and a great variety of additional equipment.
Due to their excellent beam quality, fiber lasers are the first choice for diverse applications in the field of laser precision cutting and welding, as well as in micro-materials processing and laser marking.
Fiber lasers are compact and rugged, don't go out of alignment, and easily dissipate thermal energy.
They come in many forms, sharing technology with other type of lasers but providing their own unique advantages.
Fiber lasers: The state of the art
In flame cutting, oxygen is used as the cutting gas. The oxygen is blown into the kerf at pressures of up to 6 bar. There, the heated metal reacts with the oxygen: it begins to burn and oxidizes. The chemical reaction releases large amounts of energy - up to five times the laser energy - and assists the laser beam. Flame cutting makes it possible to cut at high speeds and handle jobs involving thick plates such as mild steel with thicknesses in excess of 30 millimeters.
Plasma cutting (plasma arc cutting) is a melting process in which a jet of ionised gas at temperatures above 20,000°C is used to melt and expel material from the cut. During the process, an electric arc is struck between an electrode (cathode) and the workpiece (anode). The electrode is recessed in a water- or air-cooled gas nozzle which constricts the arc causing the narrow, high temperature, high velocity plasma jet to form.
When the plasma jet hits the workpiece, recombination takes place and the gas reverts to its normal state, emitting intense heat as it does so. This heat melts the metal and the gas flow ejects it from the cut. Plasma gases are usually argon, argon/hydrogen or nitrogen. These inert gases can be replaced by air but this requires a special electrode of hafnium or zirconium. Use of compressed air makes this variant of the plasma process highly competitive with the oxy-fuel process for cutting carbon-manganese and stainless steels up to 20mm thick. Inert gases are preferred for high quality cuts in reactive alloys.