A, super high-pressure water atomization (granulation) device uses and principles
The device, in order to meet the water atomization, atomization and experimental device of combined atomization process design in atmospheric conditions, production for product development or precious metals.
The device working principle, refers to the atmospheric conditions of melting metal or metal alloy, in gas protection conditions, metal liquid in tundish, through the thermal insulation draft tube flow process, through the nozzle from the liquid metal ultrahigh pressure water or gas metal liquid atomization broken into many small droplets, droplet fine during flight in the surface tension and water to rapid cooling under the formation of sub spherical or irregular shape particles, powder to achieve.
Two, high-pressure water atomization has the following characteristics
1, can be prepared in the vast majority of metal and alloy powder, and the production cost is low.
2, can be prepared in spheroidal powder or irregular powder.
3, due to the solidification rapidly without segregation phenomenon, and can produce many special alloy powder.
4, by adjusting the appropriate process, can make the powder size to achieve a required range.
Three, high-pressure water atomization device structure
High-pressure water atomization (granulation) device structure consists of the following parts:
Melting, tundish, atomization system system, inert gas protection system, ultra high pressure water system, cooling water system, PLC control system, platform system etc..
1, melting, tundish system:
In fact is a multifunctional induction melting furnace, it has: housing, induction coil, a temperature measuring device, tilting mechanism, tundish consists of several parts: housing is a frame structure, is made of carbon steel and stainless steel, installed in the middle of the induction coil, crucible placement of induction coil, can be melted and cast.Tundish is installed in the nozzle system for storing liquid, molten metal, and heat insulation effect, it is smaller than the crucible smelting system, intermediate ladle furnace heating system, temperature measurement system of their own.The heating system heat furnace, a resistance heating and induction heating in two ways, resistance heating temperature can reach 900 ℃, induction heating temperature of 1200 DEG C or higher, but the reasonable selection of crucible materials.
2, the atomization system:
The atomization system is composed of nozzle, high-pressure hose, valve etc..
3, the protection of inert gas system:
In the milling process, in order to reduce the oxidation of metals and alloys, reduce oxygen content of powder, using a certain amount to pass into the inert gas atomization tower usually protective atmosphere.
4, high pressure water system:
The system is a device for providing high-pressure water atomization nozzle, which is composed of high pressure water pump, water tank, valve, high pressure hose and bus etc..
5, cooling system:
The whole device part is provided with a water cooling, cooling system is essential.The cooling water temperature will be reflected in the two meters, in order to ensure the operation safety device.
6, control system:
The control system is the control center of the device operation, all operation and phase
