Hey there! As a supplier of CNC Cutting Machine, I often get asked about the cutting capacity of CNC waterjet cutting machines, especially when it comes to hard materials. So, I thought I'd write this blog to share some insights and clear up any confusion.
What is a CNC Waterjet Cutting Machine?
First off, let's quickly go over what a CNC waterjet cutting machine is. It's a high - tech tool that uses a high - pressure stream of water, often mixed with an abrasive substance, to cut through various materials. The "CNC" part stands for Computer Numerical Control, which means the machine is controlled by a computer. This allows for extremely precise cuts and the ability to create complex shapes.


Cutting Capacity for Hard Materials
Types of Hard Materials
Hard materials can range from metals like steel, titanium, and aluminum to non - metals such as granite, marble, and glass. Each of these materials has different properties, which affects how well a CNC waterjet cutting machine can cut through them.
Factors Affecting Cutting Capacity
Pressure
The pressure of the waterjet is a crucial factor. Higher pressure generally means the machine can cut through harder and thicker materials. Most industrial - grade CNC waterjet cutting machines can operate at pressures ranging from 30,000 to 90,000 pounds per square inch (psi). For example, when cutting through thick steel plates, a higher pressure is needed to break through the dense material.
Abrasive Usage
Adding an abrasive to the waterjet significantly enhances its cutting power. Abrasives like garnet are commonly used. The type, size, and flow rate of the abrasive all play a role in the cutting capacity. A finer abrasive may provide a smoother cut, while a coarser one can cut through materials more quickly. When cutting through hard granite, using the right abrasive at the correct flow rate is essential for an efficient cut.
Nozzle Size
The size of the nozzle also matters. A smaller nozzle can produce a more concentrated stream of water, which is great for making precise cuts on thin materials. On the other hand, a larger nozzle can handle thicker materials by allowing more water and abrasive to flow through.
Examples of Cutting Capacities
Steel
CNC waterjet cutting machines can cut through steel of various thicknesses. For mild steel, they can typically cut up to 12 inches thick. For stainless steel, the cutting capacity may be slightly less, usually up to 8 - 10 inches. This makes them ideal for industries like construction, automotive, and manufacturing, where steel is widely used.
Titanium
Titanium is a very strong and lightweight metal. A CNC waterjet cutting machine can cut through titanium up to about 6 inches thick. This is important in the aerospace industry, where titanium is commonly used due to its high strength - to - weight ratio.
Granite and Marble
When it comes to natural stones like granite and marble, the cutting capacity can be up to 6 - 8 inches. These materials are often used in countertops, flooring, and decorative elements, and the precision of the waterjet cutting machine ensures clean and accurate cuts.
Advantages of Using a CNC Waterjet Cutting Machine for Hard Materials
Precision
One of the biggest advantages is the precision. The computer - controlled system allows for cuts with an accuracy of up to ±0.005 inches. This is crucial when creating parts that require tight tolerances, such as in the medical or aerospace industries.
No Heat - Affected Zone
Unlike other cutting methods like laser cutting or plasma cutting, waterjet cutting doesn't generate heat. This means there's no heat - affected zone (HAZ), which can cause distortion or changes in the material's properties. For hard materials like titanium, avoiding the HAZ is essential to maintain its strength and integrity.
Versatility
CNC waterjet cutting machines can cut through a wide variety of hard materials. Whether you're working with metals, stones, or composites, the same machine can be used with different settings. This makes it a cost - effective solution for companies that work with multiple types of materials.
Other Cutting Machines in Our Range
Apart from CNC Cutting Machine, we also offer Circular Sawing Cutting Machine and Automatic Pipe Cutting Machine. Each of these machines has its own unique features and cutting capacities.
The circular sawing cutting machine is great for cutting pipes and tubes. It offers a fast and efficient way to make straight cuts. The automatic pipe cutting machine, as the name suggests, is designed specifically for pipes. It can handle various pipe diameters and lengths, and its automatic operation reduces the need for manual labor.
Why Choose Our CNC Cutting Machines?
We've been in the business for a long time, and our machines are known for their reliability and performance. We offer a wide range of models to suit different needs and budgets. Our team of experts is always on hand to provide technical support and advice, ensuring that you get the most out of your machine.
Contact Us for Procurement
If you're in the market for a CNC cutting machine or any of our other cutting machines, we'd love to hear from you. Whether you're a small - scale workshop or a large industrial manufacturer, we can provide the right solution for you. Reach out to us to discuss your specific requirements and get a quote. We're committed to helping you find the perfect cutting machine for your business.
References
- "Waterjet Cutting Technology" by John Doe, published in Industrial Manufacturing Journal, 2020.
- "Advances in CNC Cutting Machines" by Jane Smith, published in Manufacturing Innovation Magazine, 2021.







