Waterjet cutting machine classification and safety

Water cutting is the use of equipment pressurized water to generate momentum to achieve cutting. The pressure is divided into high pressure and low pressure types, generally with 100Mp as the limit. More than 100Mp is high-pressure type, less than 100Mp is low pressure type. We come with you to talk about waterjet classification and safety.

Waterjet cutting classification of device: divided into large waterjet cutting and small waterjet cutting. The classification of technical principle: divided into pre-mixed type and after mixing type. Large waterjet cutting belong to ultra-high pressure class, usually the pressure above 380Mp. Due to its cutting principle is: water after pressurizing, in the position of the cutting gun through a gem nozzle, use flow speed drive abrasive, and then through cutting nozzle spray water and sand mixture to achieve the object cutting, this method due to the use of water hammer to drive the abrasive, it will lose a lot of energy, resulting in high power, low efficiency. Low pressure waterjet cutting, also known as portable waterjet cutting, because of its use of water and abrasives at the same time pressing way, pressurized water and abrasive spray out of cutting nozzle at the same time, so it has low power and high efficiency.

Waterjet cutting pressure and safety

Since the waterjet cutting mainly depends on the pressure and kinetic energy to achieve the object of cutting, after a lot of experiments it was found that when the pressure exceeds a certain threshold, even if pure water will put some sensitive chemicals detonated, and abrasive waterjet cutting due to water containing abrasive sand, the sand potential and impact and object collision, the energy produced will lead to instability in specialty chemicals, after a lot of experimentation and demonstration, the conclusion that the threshold at 237.6MP. Therefore, in waterjet cutting industry, people for the 200MP above waterjet cutting is mainly used in the machining industry.

The low-pressure waterjet cutting due to its low pressure, usually less than 50MP, far below the safe threshold range, so it can be used in special areas. Such as: cutting processing of explosives, detonators, artillery shells, aerial bombs, oil and gas pipelines, chemical products, coal and other fields. Waterjet power is very strong, and in the process of using pay attention to safety.

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