How Waterjet Cutting Works: A Practical Introduction

Understand the roles of the pump, cutting head, CNC system and cutting table in an industrial waterjet system.

From water pressure to a cutting tool

A waterjet system directs a concentrated, high-velocity stream at a workpiece. The pump supplies high-pressure water, while the cutting head forms the jet. In abrasive cutting, abrasive particles are introduced to help remove hard material. The CNC motion system follows the programmed profile.

The main parts of a complete system

The pump, cutting head, motion platform, control software and catcher tank work together. Water supply, filtration, abrasive delivery and workpiece support also matter. A machine should therefore be assessed as a complete production system rather than as a pressure rating alone.

Pure water and abrasive cutting

Water-only cutting is used for suitable soft materials. Abrasive waterjet cutting is commonly used for metal, stone and other hard materials. Material compatibility and edge quality should be confirmed with a representative sample, especially for brittle, layered or coated workpieces.

What to check before buying

Prepare a drawing, material specification, thickness range and required finish. Ask for a sample cut that includes the smallest holes, tightest corners and other critical features. Measure the finished sample against your drawing and compare the complete cutting cycle with your production target.

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