射頻等離子體球化制備粉末材料生產(chǎn)線
設備用途及原理
射頻等離子體，具有能量密度高、加熱強度大、等離子體弧的體積大，由于沒有電極，不會因電極蒸發(fā)而污染產(chǎn)品。
射頻等離子體粉末球化技術原理，是在高頻電源作用下，惰性氣體（如氬氣）被電離，形成穩(wěn)定的高溫惰性氣體等離子體；形狀不規(guī)則的原料粉末用運載氣體（氮氣）經(jīng)送粉器噴入等離子炬中，粉末顆粒在高溫等離子體中吸收大量的熱，表面迅速熔化；并以極高的速度進入反應器，在惰性氣氛下快速冷卻，在表面張力的作用下，冷卻凝固成球形粉末；再進入收料室中收集。
Application and Principles
Radiofrequency plasma possesses high energy density, strong heating strength, and its plasma arc is huge. Due to no electrodes available, it can not generate polluting products caused by electrode vaporing.
The principle of radio-frequency plasma powder balling technology refers to that inert gas (like argon) is ionized under the effect of high-frequency power supply and formed as hot inert-gas plasma; and the irregular raw powder is sprayed by vector gas (nitrogen) into the plasma through powder feeding device, and these powder particles absorb large amount of heat in hot plasma and their surfaces are melted rapidly; then these melted powder are sent into reaction device by extremely high speed, and chilled down under inert gas environment. Consequently, they are cooled down and solidified into spherical powder by surface tension; furthermore, they are sent into material gathering room and are gathered.
設備優(yōu)勢及特點
1、加熱溫度高、冷卻速度快、無電極污染；
2、反應物料在等離子體中動態(tài)分散，可以避免粉體的團聚和長大，適合進行粉體的熔融球化；
3、可以制備鎢、鉬、Ti、W、WC、氧化鋁、氧化硅、氧化鋯等高溫難熔金屬及氧化物粉體；
4、粉末形狀規(guī)則球化率高，表面光潔，流動性好；粉末致密性和堆積密度增大。
Superiorities and Features
1. Heating temperature is high, cooling speed is fast, and no electrode pollution is produced;
2. Reaction materials are dynamically dispersed in plasma, in this way it can avoid the accumulation and growth of powders, and it is applied to melting and balling of powder particles;
3. It is applied to preparation of hard-melted metal and oxide powders in high temperature, such as W, Mo, Ti, W, WC, Al2O3, silicon oxide, zirconia and so on;
4. The shape of powder is regular, its balling rate is high, the surface is bright and clean, and also has good flow-ability; The compactness and accumulation density of powder are increased.
設備主要技術指標
本設備保持行業(yè)高技術水平；詳細技術資料請與我公司聯(lián)系；
Major Technical Index
Relevant technical index maintains the most advanced level in this field; Please contact us if need detailed technology files.
設備核心模塊結構技術
射頻等離子體球化制粉設備由以下七部分及其周邊部件組成：.
1、射頻等離子體炬；
2、射頻等離子體電源；
3、供氣送粉系統(tǒng)；
4、反應室與收集室及支架；
5、真空抽氣系統(tǒng)；
6、電氣控制及測量系統(tǒng)；.
7、冷水機組。
Core Module Structure Technology
Radiofrequency plasma balling powder producing equipment is constructed with following seven components and peripheral components:
1. Radio-frequency plasma torch;
2. Radio-frequency plasma power supply;
3. Gas supplying and powder feeding system;
4. Reaction room and collection room, frame as well;
5. Vacuum pumping system;
6. Electric controlling and measuring system;
7. Cooling water machine unit.
射頻等離子體炬：
整套設備的核心關鍵技術，具有自主知識產(chǎn)權的技術。采用陶瓷約束管，發(fā)散型噴嘴，可在惰性氣體、還原、氧化氣氛下工作。
Radio-frequency plasma:
It is the core key technology of the entire equipment, possessing proprietary intellectual property right. And it applies ceramic constraining pipe and divergent nozzles, allowing its performances under inert gas, reduction and oxidation environment.
高頻等離子體電源：
功率100KW，頻率3.0±0.5MHz.
High-frequency plasma power supply:
Power 100KW, frequency 3.0±0.5MHz.
供氣送粉系統(tǒng)：
將物料輸送至等離子體炬內(nèi)，送粉粒徑為10-200μm；供氣系統(tǒng)采用精密的浮子流量計（4路），為炬提供工作氣體（氬氣）。反應室、收集室及支架：反應室與收集室采用雙層水冷結構，其材質(zhì)不銹鋼，全部采用真空密封結構；支架采用碳鋼噴塑，部分材料采用鋁合金材料，堅固穩(wěn)定安全。
Gas sending and powder feeding system:
It sends powder material into plasma torch. The diameters of sent powder particles are 10-200μm; on the other hand, gas supplying system applies precise float flowmeter (4 road), providing working gas (argon) for the torch. Reaction room, gathering room and frame: reaction room and gathering room utilize double-layer water cooling structure, and they are made of stainless steel, entirely adopting vacuum sealing pattern; the frame is spray-painted by carbon steel, partial materials are aluminum alloy which are strong, hard, steady and safe.
抽氣系統(tǒng)：
配置為水環(huán)式真空泵+機械泵+羅茨泵+調(diào)節(jié)閥+管道+波紋管等，并進行切換，以維持系統(tǒng)啟動與運行需要的負壓。極限真空度8×10-2Pa。
Air pumping system:
It is equipped with water-circulating vacuum pump + mechanical pump + lobe pump + regulating valve + pipes + corrugated bellows, and switched to maintain required loading voltage for booting the system its operation. Extreme vacuum is 8 x 10-2Pa.
電氣控制及測量系統(tǒng)：
溫度、壓力測量，過濾器反吹、送粉控制、氣體流量調(diào)節(jié)等。
工業(yè)冷水機組：
30匹，采用風冷結構，為電源與等離子體炬冷卻提供潔凈冷卻水。
Electric controlling and measuring system:
Temperature and pressure measurement, regulation on filter back flushing, powder sending control, and gas flow.
Industrial cooling water machine unit:
30P, adopting air cooling pattern and providing clean cooling water for power supply and plasma torch.
