Waterjet cutting is a particle separation process that uses high pressure water (4,000 bar) and abrasive sand. High pressure is produced by a high pressure pump. Waterjet service uses a high pressure pump from the Austrian manufacturer BFT, since StM's machines come with BFT pumps.
The power of the pump is 45kW and it has the possibility of supplying a pressure of 4,000 bar to two cutting heads at the same time. The power of the pump is selected according to the cutting needs. Abrasive sand is a special type of sand that, with its hardness and shape, enables the cutting of even the hardest materials. A mixture of water at a pressure of up to 4,000 bar and abrasive sand provides the ability to cut almost all existing materials.
Therefore, it is the most flexible material cutting technology and is applied in a very wide range of industries. In addition to flexibility, it also offers very high accuracy and quality of processing, and has no negative effects on the structure of the material. The material does not heat up during cutting and does not change its structure, which often plays a key role, especially in welding. The cutting surface depends on the cutting speed, and is divided into five qualities, from the finest to the roughest. The quality of the cut is determined by the cutting speed, and therefore, of course, has a great impact on the price of the cut.
Since the consumption of electricity and abrasive sand have the greatest impact on the cost of cutting, it is of great importance to have a high-pressure pump with high efficiency, and constant pressure without sudden drops.
We are proud of the fact that BFT pumps are characterized by just that and are therefore at the top of the market. To reduce abrasive costs, StM offers the OneClean AR abrasive recycling system, and it has the highest cost-effectiveness in the metal industry and multi-shift companies.
On the ecological side, water jet cutting is considered a clean technology because it uses clean water and a chemically inert type of abrasive sand for cutting. When cutting synthetic materials, no harmful gases are developed because there is no heat input. During cutting, small particles of the material to be cut are separated, and when that material is chemically harmful, its removal can be ensured by filters that will not allow harmful particles to enter the sewer.
In addition to the metal industry, in which the application of water jet cutting has been present for many years, it is increasingly present in the industries of ceramics, stone, glass, plastic, wood, sponge and laminated materials.
Due to its wide application, it does not limit the range of activities to the users of such machines, but can only expand them.
All materials, one technology.