Waterjet cutting

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General information about waterjet cutting
Waterjet cutting is a future-based and environmentally friendly technology for the highly automated cutting of any material.

To create a cutting jet, water is pressurised at 4000–6000 bar.

Depending on requirements, water is pressurised through jet nozzles measuring 0.08–0.4 mm in diameter. Pressurised energy then converts into kinetic energy with the cutting jet reaching a velocity of 900 m/s – three times the speed of sound.
This method can, for example, cut through steel or aluminium of up to 250 mm in thickness.

A jet of pure water can be used to cut through textiles, thermoplastics, paper, fibrous material, thin plastics, elastomers etc. The abrasive cutting process can be used to cut through compact and hardened materials such as hard stone, metal, armoured glass, ceramic etc. Micro-cutting takes place when a natural sand is added to a waterjet via a mixing chamber.
At the end of the 1960s, an American aircraft manufacturer opted for waterjet cutting for processing fibrous, honeycombed and layered materials. These materials are especially susceptible to temperature and pressure forces. Conventional cutting techniques such as welding, sawing or shearing impair the material's structure.

Thermal procedures, such as laser cutting, often produce burning, melting and fumes at the site of cutting. Laser and plasma cutting can create tension, microscopic cracks and structural changes in the metal.

Milling often results in inefficient material usage and a high degree of tool wear and tear.

Examples of waterjet cutting
Benefits of waterjet cutting technology
  • Cold cutting with no thermal effects that cause hardening and warping
  • Optimal material usage due to narrow cutting lines and seamless nesting
  • No deformation in the cutting area
  • Materials can also be processed in sandwich combinations
  • Multi-layer cutting possible
  • Any contour, narrow radii and walls
  • High precision to +/- 0.05 mm
  • Environmentally friendly, no dust particles, no fumes
  • Flexible production
  • Cutting of stainless steel, aluminium, copper and special materials of up to 250 mm in thickness are otherwise possible only by milling or sawing

Practically any type of material can be processed.

Examples of abrasive cutting:
stainless steel, aluminium, high-alloyed steels, titanium, Hastelloy, copper, bronze, special materials etc. Pure water cutting: foils, seals, rubber, foam, composites, carbon, textiles.