Water Atomization Powder Processing Equipment
1. Introduciton
Atomized powder manufacuring method is a kind of new technology in
the powder metallurgy industry which was developed in recent years.
It is with the characteristics of simple craft, easy to master
technology, not easy oxidizing material, and high degree of
automation. Specific process is that alloy (metal) melts and
refines in induction furnace, and molten metal is poured into a
heat preservation crucible, and enters diversion pipe and nozzle,
then the melt flow is atomized by high pressure liquid flow (or
airflow), and atomized metal powder solidifies and subsides in
atomizing tower, finally falling into powder collect cans to
separate. It is widely used in non-ferrous metal powder
manufacturing area like, atomized iron powder, copper powder,
stainless steel powder, alloy powder, etc. Manufacturing technology
of complete set of iron powder equipment, copper powder equipment,
silver powder equipment, alloy powder equipment is more and more
mature gradually.
2. Application and Principle
High pressure water atomization powder equipment, a kind of
industrial mass production device, is designed to meet the
requirement of water atomization powder manufacturing craft under
the atmosphere condition. Working principle of high pressure water
atomization powder manufacturing equipment is that melting metal or
metal alloy under gas condition, metal liquid during the process of
passing heat preservation tundish and diversion pipe under the
condition of gas protection is atomized and crushed into a large
number of tiny metal droplet by ultra-high pressure waterflow
through nozzle. The flying tiny metal droplet is formed into
spherical or irregular particles under the combination action of
surface tension and rapid cooling of water to achieve the goal of
powder production.
3. Features of Water Atomization Powder Process
1. It can be used to manufacture most of metal powder and its alloy
powder with low production cost.
2. It can be used to manufacture spherical or irregular powder.
3. Because of rapid solidification without segregation phenomenon,
many special alloy powder can be produced.
4. Using right craft can make the powder particle size to achieve a
required range.
4. Main Technical Parameters
| Model | JTSWH-30 | JTSWH-50 | JTSWH-100 | JTSWH-300 | JTSWH-500 | JTSWH-1000 |
| Pressure of High Pressure Water(Mpa) | 100-300 |
| Flow of High Pressure Water(L/min) | 50-800 |
| Furnace Charging Weight(Kg) | 30 | 50 | 100 | 300 | 500 | 1000 |
| Max. Smelting Temperature(°C) | 1750 |
| Smelting Heating Power(KW) | 50 | 80 | 130 | 200 | 260 | 400 |
| Temperature Measuring Method | Infrared, WRe5.26 |
| Tundish Heating Power(KW) | 10-20 |
| Supply Power | Three Phase, 380V, 50Hz |
| Total Installed Powder(KW) | To be determined |
| Flow of Cooling Power (L/min) | 150 | 300 | 400 | 700 |
| Cooling Water Device | Air cooling tower, water cooling unit, heat exchanger |
| Flow of Soft Water(m3/h) | 6-20 |
| Control Method | Relay or PLC |
| Operating Interface | Button type or touch screen |
| Data Record | 12 data curve record, LCD monitor and display |
| Overall Dimension(LxWxH)mm | 7500x4000x6500 | 7500x4200x6500 | 8200x4200x6500 | 8200x4500x6500 | 8500x4500x6500 | 9200x5000x6500 |
5. Structure
High pressure water atomization powder manufactuing equipment is
consisted of the following parts:
Melting and tundish system, atomizing system, inert gas protection
system, ultra-high pressure water system, powder collect dewatering
and drying system, screening system, cooling water system, PLC
control system, platform system, and so on.
1. Melting and tundish system
2. Atomizing system
3. Inert gas protection system
4. Ultra-high pressure water system
5. Cooling system
6. Control system
(1) Melting and tundish system
Actually it is a medium frequency induction melting furnace, which
consists of shell, induction coil, temperature measuring equipment,
tilting furnace device, etc. The shell is a frame structure, which
is made of carbon steel and stainless steel. Induction loop is
installed in the middle, and the crucible is placed in the
induction coil and could do the melting and pouring. The tundish is
installed in nozzle system for storing molten liquid metal and
thermal insulation.
It is smaller than the melting crucible volume. The tundish holding
furnace has its own heating system and temperature measuring
system. The heating system of holding furnace has two ways of
electric resistance heating and induction heating, and generally
resistance heating temperature can reach 1000 °C and induction
heating temperature can reach 1200 °C or higher, but be reasonable
choice of crucible materials.
(2) Atomizing system
The atomization system is made up of nozzle, high pressure water
pipe, valve, etc.
(3) Inert gas protection system
During the process of making powder, to reduce the oxidation of
metals and alloys and to reduce the oxygen content of powder, we
commonly spray a quantitative inert gas into the tower for
atmosphere protection.
(4) Ultra-high pressure water system
The system is to provide high-pressure water for atomizing nozzle,
and it is consisted of high pressure water pumps, water tanks,
valves, high pressure hoses, busbar, etc.
(5) Cooling system
The complete device is equipped with water cooling system, which is
essential. Cooling water temperature will be reflected on a second
instrument in order to guarantee the security of device running.
(6) Control system
Control system is the operation control center of the equipment.
All the operations and related data are transmitted to PLC of the
system, and the results are displayed through the processing and
preservation.
