Combined Water and Gas Atomization Equipment

Overview

The combined water and gas atomization equipment is a combination of gas atomization technology and water atomization technology features and advantages. Molten metal liquid is atomized by gas for the first time, and then atomized by water for the second time in a very short time, which can produce ultrafine and spherical powder materials.

Advantages

Atomization method is mostly adopted for metal powder production, using high pressure water or inert gas to crush metal liquid. According to the atomizing medium, atomization can be divided into gas atomization and water atomization. Water atomization process is suitable for treating oxygen insensitive alloys. Sphericity of water atomized metal powder is not good, the shape of powder is irregular, but water atomized powder has good compressibility and formability. Gas atomization process is suitable for treating oxygen sensitive alloys. Gas atomized metal powder has good sphericity, good fluidity, high purity (low oxygen content, few non-metallic impurity), high quality of powder metallurgy product, but relative high production costs.

In view of the advantages and disadvantages of water atomization and gas atomization, EasyFashion has developed a combined water and gas atomization equipment. This equipment has the following advantages:

① The production cost is lower than gas atomization equipment, it’s suitable for mass production and R&D application.

② Sphericity of powder made by combined water and gas atomization equipment is better and application range is wider than water atomization equipment. Most metals and their alloys can be made powder by combined water and gas atomization equipment.

③ Due to the addition of gas medium, the cooling rate of droplet can be slowed down, which is conducive to the sphericity of droplet. The combined water and gas atomization equipment produces subspherical or spherical powder with high loose density.

④ Fine powder (D50: 5-10μm) can be manufactured by adjusting the process, to meet the requirements for the use of fine powder.

Main Functions

We can provide 10~1000 kg class combined water and gas atomization equipment. The equipment can be customized according to the special requirements of customer as well.

Technical Parameter

Model	EFSQWH-30	EFSQWH-50	EFSQWH-100	EFSQWH-300	EFSQWH-500	EFSQWH-1000
High-pressure gas pressure (MPa)	0-5
High-pressure waterpressure (MPa)	0-100
High-pressure water flow（L/min ）	50-800
Load weight（Kg）	30	50	100	300	500	1000
Highest smelting temperature (℃)	1750
Smelt heating power (KW)	50	100	160	300	400	600
Temperature measuring method	Infrared thermometer, WRe5.26
Tundish heating power (KW)	20-45
Power supply	Three phases, 380V, 50Hz
Cooling water device	Air cooling tower, water cooling unit, heat exchanger
Control mode	Industrial control computer or PLC
Operation interface	Touch-tone or Touch-screen
Data recording	12 data curve records, LCD monitor display
Overall dimension（L x W x H）mm	7500x4000x6500	7500x4200x6500	8200x5200x6500	9200x6500x6500	9500x4500x6500	10000x7000x6500

Components

Combined water and gas atomization equipment is mainly composed of melting system, atomization system, high pressure gas system, high pressure water system, tundish system, discharge system, control system and so on.

Others

The atomizer is the key component of the combined water and gas atomization equipment. The design of atomizer is directly related to the pulverizing efficiency of metal powder.

Our combined water and gas atomizer is further developed on the basis of the water atomizer. Molten metal liquid is initially broken by the air flow, and then is crushed by water cooling and solidified into powder. The water-gas combined atomizer improves some shortcomings of water atomization process, and breaks through the technical bottleneck of a single water atomization technology. Combined water and gas atomization equipment meets the special requirements of the market, and is more efficient than a single water atomization process.