How to choose abrasive for waterjet cutting machine

Although waterjet equipment is the use of ultra-high pressure technology to ordinary tap water pressure to the high pressure (usually 250--400Mpa), then ejected through a very fine diameter gem orifice, forming speed of about 800-1000m/s high-speed jet, commonly known as water arrows. For cutting material, but with pure water energy, can cut soft base materials. Waterjet cutting ability ia related to the abrasive, and if you want to cut hard materials, you need to add the right amount of abrasive in water. Specifically how to choose abrasive and Here simple explain. Let's look at how to select waterjet cutting abrasive.

To be able to cut hard materials, it is necessary to add abrasive in the high-pressure water. The abrasive effect is used to improve the cutting performance. Enlarge particles, there are a lot of edges on it, it is these edges like a sharp blade driven by high-pressure water continuously toward the workpiece form a strong cutting force. The sand used was blunt their edges, and thus loses its cutting ability, so for used abrasive no longer recycling.

In order to make the cutting section of the workpiece relatively smooth, uniform, requires the abrasive flow is good and can be continuous, uniform supply, so the sand particle size have more stringent requirements, too large particles have poor mobility, and easy to plug the pipe; too small particles, cutting ability reduced. When the abrasive contains larger size debris will lead to poor abrasive flow, thereby reducing the cutting ability; when the abrasive contains tiny particles of dust, the dust will be assembled and attached to the pipe wall, especially pipeline bend, thus impeding the flow of abrasive, cutting capacity will be reduced. For these reasons, the abrasive used in the waterjet cutting shall be strictly filtration screening, screening at least twice, once to remove large particles and debris, once to remove very small particles of debris. In the use of water jet cutting machine according to the needs to choose different abrasives, which will help improve cutting efficiency.