What is Waterjet Cutting? A Complete Guide

A complete guide to waterjet cutting

What is Waterjet Cutter?

Waterjet cutting is a computer-controlled precision cutting technique that uses a high-pressure water pump and an abrasive to cut near-net shapes from ferrous and non-ferrous metals and plastics. The pump can deliver up to 3 litres of water per minute via a 0.28-millimetre water nozzle. By incorporating a garnet flow into the water jet, a medium capable of cutting materials with varying thicknesses, tolerances, and cut qualities is created.

The machine directs highly pressurized water at the material through a ruby or diamond-encrusted opening. The pressurized water is directed through a small nozzle, creating a vacuum in which an abrasive substance like garnet is drawn into and mixed with the jet stream. This stream is then expelled at high speeds through the mixing tube/nozzle, grinding its way through virtually any material.

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What kinds of Materials can a Waterjet CCut?

Another advantage of a waterjet cutting machine is its versatility regarding what it can cut through. A waterjet cutting machine can cut almost any material and in almost any thickness, making it one of the most impressive cutting machines on the market today. Wood, metal, plastic, and stone are all materials that can be cut with a waterjet cutting machine.

Types of Waterjet Cutting

Two types of waterjet cutting machines include purified water cutting machines and abrasive ones. Both have their own set of applications and benefits. Abrasive waterjet cutting machines are far more common in metal fabrication and are used to cut through the hardest of materials.

It is ideal for tight tolerances and intricate designs.

Delivering water and garnet at up to 87,000 PSI in a very narrow stream allows precise cutting capabilities, which are excellent for intricate details. Because of the cutting accuracy, no rough edges or burrs are left after processing. Because of the high edge quality, additional finishing requirements such as grinding or polishing may be reduced.

Possible for single-parts or scaled production

Waterjet cutting can be the solution for a single piece or many parts. 

Waterjet cutting has lower setup costs than traditional CNC machining because it is done on demand. Our waterjet machines at thyssenkrupp Materials Copper and Brass Sales are the same model, allowing us to control the output and develop standardized specifications and tolerances. Our waterjet machines have dual three-axis heads and sophisticated nesting software determining the best material usage for increased productivity and cutting speeds.

There are o structural changes to the material and no heat zone.

The fact that waterjet cutting is a naturally cold process is a huge advantage. Waterjet cutting does not affect products that might be harmed by the heat process used in other cutting methods, such as laser cutting, so there is no risk of burning, melting, warping, surface hardness, or cracking. Some metals’ properties can change when cut using a thermal method. Cutting with waterjet machines is also better for the environment because no harmful gases are emitted.

High machining accuracy and surface quality

Various edge qualities provide the most effective balance of cutting speed and edge quality to give our customers what they need at a reasonable price.

The waterjet machine’s power is limited only by its tight tolerances and ability to cut through varying thicknesses of metals such as aluminium, stainless steel, copper, brass, bronze, titanium, and plastics. Using our in-house waterjet capabilities, we can turn a block of almost any material into the desired near-net-shape design.

Advantages of Waterjet Cutting

Waterjet cutting is a fast and precise machining method used on virtually any material. It offers advantages over conventional methods such as laser and plasma cutting, including accuracy, flexibility, lower operating costs, minimal thermal distortion of the workpiece, no hazardous waste produced from the cutting process, and it can cut intricate parts with excellent edge quality. In addition to its practical benefits, water jet cutting is safe for operators due to its non-contact nature.

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