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Plasma Atomization Powder Manufacturing Production Line
Application and Principles
The plasma, as a technology under ultimate conditions, is an advanced and new technology in the application for disposition and synthesis and preparation of powdered material, and currently prevails among studies in many countries.
Its working principles refer to several steps. First, inject solid particles into inert gas plasma and completely evaporate them under the high temperature of the plasma, existing as steam. And then cool them fast with gas quenching cooling technology, and finally allow saturated steam to be rapidly condensed, nucleated, grew and formed into superfine powder.
Advantages and Features
Owning to advanced technological superiorities, this equipment series are commonly applied to the preparation of superfine/nano-powdered material with highly chemical purity:
1. Metals: Cu, Fe, Al, Mo, W, Ni, Re, Ta, Ti and their alloys;
2. Oxides: Al2O3, MgO, TiO2, ZrO2, SiO2 and so on;
3. Carbides: WC, TiC, B4C, SiC and so on;
4. Nitrides: AiN, TiN, BN, Si3N4 and so on.
Application and Principles
The performance principles of PIGA equipment refer to the smelting in water- cooling copper crucible with plasma jet. The bottom of the crucible connects with an induction heating fluid-direction nozzle (the fluid-directing nozzle is made of copper), through which metal liquid flow out into vacuum atomization system and is generated into powder with inert gas.
Plasma induction smelting directional gas atomization equipment is applied to the active material and hard-smelted material requiring for free-ceramic production technology, such as Ti, TiAl, FeGd, FeTb, Zr, and Cr and so on.
Superiorities and Features
This equipment primarily possesses following features:
1. It is suitable for producing active material powder (such as titanium) or hard-smelted alloy;
2. Free-ceramic production technology, able to produce high-purity and superfine nano powder materials.
Core Module Structure Technology
Plasma induction smelting directional gas atomization equipment is consisted of nine core modules and peripheral components as below:
1. Plasma smelting furnace;
2. Atomization system;
3. Atomization container;
4. Dust collecting system;
5. Vacuum system;
6. Cooling system;
7. Gas system;
8. Electric and controlling system;
9. Medium-frequency induction power supply.
Application and Principles
The principle of plasma rotation electrode centrifuge atomization technology refers to that the end face of self-consuming electrode made of metal or alloy is melted into liquid state with being heated by plasma torch, then the liquid is thrown out of by centrifugal force caused by electrode high speed rotating and smashed into tiny droplets, and consequently these droplets are congealed to be powder. Inert gas can be an available option to be protecting gas, and among which helium is the best due to its highest thermal conductivity, about 10 times of argon, not only increasing cooling speed but also improving the properties of the plasma torch.
Plasma rotation electrode centrifuge atomization preparation powder equipment can produce spherically hot metal powdered material with high purity and its particle size is 50-500 nanometers. These powdered material can work as the raw material for producing high thrust-weight-ratio turbine disc and compressor disc of aero-engine, and other hot rotating components.
Advantages and Features
This equipment possesses following advantages and features:
1. It can prepare hard-melted metal and active metal powder such as nickel-based hot metal alloy and titanium alloy, as well as various alloy powder such as Ta, W, Co, Cr and other metal-based alloy.
2. It is required to completely avoid fire-resistance materials during the course of metal melting and atomizing, eliminating pollution sources mixed with non-metal medias and thus it can produce high-cleanliness powdered material.
3. The shapes of these produced powder are regular, among which the spherical powder is produced at high possibility, its surface is bright and clean and has good mobility;
4. No satellite-ball powder and hollow powder are produced by this equipment;
5. The scope of particle size distribution is relatively narrow.
6. It can produce several special alloy powder because of segregation phenomena is conquered by curds.
Core Module Structure Technology
Plasma rotation electrode centrifuge atomization equipment is consisted of seven major core modules and peripheral components as below:
1. Atomization room and powder collection system;
2. Plasma gun appliance;
3. Transmission appliance unit (high rotation speed sealing, electrical machine, bears, and electrode movement device);
4. Vacuum system;
5. Cooling system;
6. Gas system (gas environment control, plasma torch circulation);
7. Electric and control system.
Application and Principles
It is a technological principle applied in plasma atomizing preparation for high-purity spherical superfine / nanometer powdered material, including rod material and wire material. Powdered particle raw material or liquid and gas raw material are directly sent by particular material feeding device into the plasma focused area formed by symmetrical hot plasma torch, and the temperature can reach 5000K above. Under such high temperature, raw material will be immediately liquefied or vaporized or decomposed/synthesized with thermal reaction, and also be high-speed impacted, dispersed, and atomized into superfine liquid droplets or gas smoke by symmetrical plasma.
And then, during the course of flying and sedimentation in atomizing tower, they are allowed to have rapidly heat exchanged with cooling gas continuously fed in atomizing tower, and consequently chilled and solidified into various spherical superfine or nanometer powdered material in high chemical purity.
Superiorities and Features
This equipment is primarily featured with producing nanometer advanced powdered material, and possesses unique superiorities of producing high-technological new material applied in aerospace field:
1. It can produce various superfine/nanometer metallic powder, such as Ni, Co, Ti, Zr, Ta and other spherical powder.
2. If fed in some mixed gases which can generate synthetic reaction, it can produce some oxides, carbides, and nitrides and some other high chemically purified ceramic powder.
3. The particle size of the powder directly atomized by plasma is usually nanometer (nm) grade, and has low oxygen content and high activity. Thus, these powders have good sintering character, and each mechanical property of the sintered products have been greatly improved. In addition, the superfine metallic powder or oxide powder produced in this way also possesses amazing magneto-electric character and anti-corrosion property, as well as electromagnetic wave absorption specialty. This equipment has a bright future of producing high-technological new material applied in aerospace field and electronics and semiconductor materials.
Core Module Structure Technology
Plasma rotating electrode centrifugal atomization equipment is consisted of five major core modules and peripheral components as below:
1. Material feeding system;
2. Symmetrical plasma torch and power supply;
3. Vacuum system;
4. Atomization tower and reaction room;
5. Powder collection device and it connects with gas-powder separating system, powder gathering system, and gas-purification recycling and utilizing system.
