In the early water cutting, due to the small water pressure, no abrasive was added, and it could only be used to cut relatively soft and low-strength materials such as paper, which has a very narrow application range.
Later, with the development of technology, high-pressure water pumps can be used to cut more materials. Early water cutting relied entirely on water pressure to cut materials, but only materials with a lower material strength than water pressure could be used. Great limitation.
The water pump pressurizes the water, but the pressure is not enough. What to do? I have to add a booster pump to pressurize the water again to reach the desired pressure. Note that the abrasive cannot be added to the water source or high-pressure water pipeline. , Because the pipeline will be worn through soon, how to add it, can only be added at the nozzle position, let the water and abrasive mix, can not be too close to the exit, because to accelerate him for a distance, only the abrasive has a certain The flow velocity is more lethal, so will the mixed fluid of abrasive and water not wear the nozzle, yes, surely, this is like a seven-injury fist, hurting yourself first and then hurting people, is there any way to avoid it? No, it can only increase its own hardness, so water cutting nozzles are made of very hard and strong materials, such as tungsten carbide ceramic composite materials.
The high-six-speed abrasive passes through the material being cut just like sandpaper. It will grind a little metal without passing through it. The continuous high-speed abrasive water mixture and the metal constantly rub, and the effect of the electric wheel is almost the same.