Water cutting, also known as water jet, is a high-pressure water jet cutting technology, which is a machine that uses high-pressure water jet cutting. Under the control of the computer, the workpiece can be carved arbitrarily, and it is less affected by the texture of the material. Because of its low cost, easy operation, and high yield rate, waterjet cutting is becoming the mainstream cutting method in industrial cutting technology.
1. Working principle
The ultra-high pressure water jet cutting machine passes ordinary water through an ultra-high pressure pressurizer to pressurize the water to 3000bar and then produces a water jet about 3 times the speed of sound through a water nozzle with a channel diameter of 0.3mm, which is controlled by a computer. It can easily cut soft materials with arbitrary graphics, such as paper, sponge, fiber, etc. If adding sand to increase its cutting force, it can cut almost any material.
2. Features:
1. There is no restriction on the cutting direction, and various special-shaped processing can be completed;
2. The lateral force generated by the water jet on the workpiece is extremely small, which can reduce the setting time and save the cost of using fixtures;
3. Waterjet processing will not produce thermal deformation, and no secondary processing is required, which can save time and manufacturing costs;
4. Waterjet processing has fast cutting speed, high efficiency and low processing cost.
3. Advantages:
1. Can easily cut stainless steel plate or hard marble, granite, etc., for those who are due to other
The method is very ideal or the only processing method for materials that are difficult to cut, such as aramid fibers, titanium alloys and other composite materials.
2. It does not produce cracks when cutting, and it can cut materials with narrow gaps. Generally speaking, the incision of pure water cutting is about 0.1mm to 1.1mm, and the incision of sand cutting is about 0.8mm to 1.8mm. As the diameter of the inner hole of the sand nozzle expands, the incision becomes larger.
3. Can be cut in all directions, including various shapes, angles, or slopes;
4. There is no need for secondary processing such as edging, and it can also reduce flying dust during the cutting process and improve the working environment.
4. The form of water cutting and the composition of water cutting machine tools:
The form of water cutting is divided into water quality, there are pure water cutting and abrasive cutting; from the pressure method, there are hydraulic pressure and mechanical pressure; from the structure of the machine tool, there are gantry structure and cantilever structure.
A complete set of water-cutting equipment consists of an ultra-high pressure system, water jet cutting head device, water jet cutting platform, CNC controller and CAD/CAM cutting software, etc.
5. Comparison between water cutting and laser cutting:
The investment in laser cutting equipment is relatively large. At present, it is mostly used for cutting thin steel plates and some non-metallic materials. The cutting speed is fast and the precision is high. The laser cutting of materials is not ideal, such as aluminum, copper and other non-ferrous metals, and alloys, especially for the cutting of thicker metal plates, the cutting surface is not ideal, or even impossible to cut. At present, people's research on high-power laser generators is trying to solve the cutting of thick steel plates, but the costs of equipment investment, maintenance and operation consumption are also considerable. Waterjet cutting has small investments, low operating costs, a wide range of cutting materials, high efficiency, and convenient operation and maintenance.
