"Waterjet cutting machine" just because it is not a knife, it has opened up a wide range of uses. The cutting of composite materials is a difficult problem in processing. If the traditional processing method is used, there will be stratification and tearing phenomenon, and the "waterjet cutting machine" is the ideal tool to solve this problem.

Waterjet classification：

1. According to the situation in Gaza, water cutting is divided into two ways: sand free cutting and Gaza cutting.

2. By equipment: divided into large water cutting and small water cutting.

3. By pressure: divided into high pressure type and low pressure type, generally 100MPa as the limit. More than 100MPa is a high pressure type, and less than 100MPa is a low pressure type. And more than 200MPa is ultra-high pressure type.

4. According to the technical principle, it is divided into pre-mixing and post-mixing.

5. By mechanical structure: divided into cantilever type and gantry type.

6. Divided into safe cutting class and non-safe cutting class, the difference is mainly in the water pressure above, below 100MPa low-pressure water cutting can be applied to special industries such as: dangerous, petroleum, coal mine, dangerous material treatment and so on. [After a large number of experiments, it has been found that when the water pressure exceeds a certain threshold, even pure water will detonate some sensitive chemicals, while sand-containing water cutting because the water contains abrasive sand, the potential energy and impact force of sand and the collision of objects, the energy generated will also cause the instability of special chemicals, after a large number of experiments and demonstration, Finally, it is concluded that the threshold value is about 237.6MPa. Therefore, in the water cutting industry, people mainly apply the water cutting above 200MPa in the machining industry.