There is a big difference between sand and sand - analysis of sand - free water knife
Sand - free water knife is a way of cutting directly with water. A large number of users have used sand free water knives to cut paper diapers, thin cotton paper, and automotive upholstery. When cutting thin cotton paper or paper diapers, a small amount of water vapor produced by the operation of non-abrasive water knives is much less than that caused by human contact or breathing. The unexpected downtime caused by the general non-water knife cutting process has caused a lot of economic losses to the diaper or tissue paper producers. And the water knife equipment can provide the above industrial application day, week, year safe use, maintenance operation can be arranged in the production.
Sand free cutting tool head:
In water cutting process, the material cutting process can be described as a supersonic etching process. Not because of the pressure, but because of the speed of the water jet itself can remove tiny parts and particles from the material. Pressure and speed are two different forms of energy. So how does water pressure change into energy like water speed? The answer is in a small piece of stone, where the pressure changes to speed as the high-pressure water passes through the hole. For the standard cutting operation, the diameter range of the gem mouth without sand knife is 0.1-0.25mm.
There are usually three different types of gemstone nozzles (sapphires, rubies, and diamonds). Each material has its own unique properties. Sapphire is currently commonly used in gemstone nozzles. It is an artificial single crystal gemstone material. The water jet produced by the sapphire nozzle has good quality. If it is combined with good water quality, its service life can reach 50 to 100 working hours. In the application of sand - containing water knife, the service life of sapphire nozzle is about 1/2 less than that of sand - free water knife. The ruby nozzles can also be used in the operation of sand containing water knives. The water jet characteristics of the ruby nozzles are very suitable for sand containing water knives, but not for sand free water knives.