A Microwave Oven Magnetron Yttrium Rhenium Tungsten Electrode and its Preparation Process Inventions
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- Category: Tungsten Information
- Published on Monday, 14 October 2013 15:18
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Microwave oven magnetron electrode, electron emitters , is an integral part of the interaction space . The performance of the magnetron cathode operating characteristics and lifetime 
great impact , is considered the heart of the magnetron . People in order to improve the function of the electron emission cathode , in a pure tungsten material added thorium , but this system is made of alloy cathode product exists brittle at room temperature and high temperature brittleness of congenital defects has not yet solved . Magnetron cathode lead in the production, transport and use occurred during uncontrolled rupture , resulting in failure of the magnetron . Seriously affect the reliability of the product , increasing the manufacturing cost. In addition , radioactive thorium , thorium added as the main raw material , in the smelting , production, transport and use, the environmental pollution , the final product made of the contact potential human health is also adversely affected, and Th half-life of 1.39 × 10 10 years, it is difficult to recycle , and its discarded products constitute a threat of pollution to the environment , so while China is currently the world's 100% commitment microwave oven magnetron production of rare earth thorium as an extremely important strategic resource , nuclear power can be used for clean energy manufacturing , therefore, from the viewpoint of the rational use of resources , in the microwave , to provide an alternative to the existing thoriated tungsten cathode magnetron has become an important research topic in the field .
Rhenium Yttrium tungsten electrode microwave oven magnetron and its preparation process object of the invention is to solve the inadequacy of existing technology to provide not only a good product performance , long life , low production costs , and no radiation in the microwave magnetron tungsten rhenium yttrium cathode . Yttrium tungsten rhenium microwave oven magnetron electrode and its preparation process is another object of the invention is to provide a tungsten- rhenium yttrium said microwave oven magnetron cathode preparation .
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A Microwave Oven Magnetron Rhenium-Tungsten Electrode Preparation Yttrium
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- Category: Tungsten Information
- Published on Monday, 14 October 2013 15:15
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A microwave oven magnetron yttrium rhenium tungsten electrode preparation process, which comprises the following steps : 
a, Mixture , calculated by weight percent : 0.3 3% yttrium , 0.1-2 % rhenium , tungsten, rhenium, the balance in the proportion of yttrium solution and ammonium paratungstate , tungsten, yttrium mixed into a mixture of rhenium ;
b, The first hydrogen reduction , the use of temperature-programmed manner 400 900 ℃ stages remain , for every stage 8 15min;
c, The second hydrogen reduction , the use of temperature-programmed manner 600 1100 ℃ stages remain , for every stage 8 15min, prepared yttrium tungsten rhenium alloy powder ;
d, Compacts , secondary vertical melt at 2000 2700 ℃ phases remain 10 20 min;
e, Forged after cooling , alumina insulation, the alloy material to cool slowly ;
f, Drawing, using a long furnace , divided 3 warm period, the first phase of the 480 550 ℃, the second phase 900 1000 ℃, the third phase 700 800 ℃, heat from low to high and then using a parabolic cooling process control ; < br />
g, Electrolysis , cutting , sodium clean shape.
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Yttrium Tungsten Electrode Applications and Features
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- Category: Tungsten Information
- Published on Monday, 14 October 2013 15:05
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Yttrium tungsten electrode is a new type of non-radioactive tungsten electrode material , mainly used in inert gas welding and plasma welding, cutting , painting, smelting , and gas discharge light sources and other industries. Yttrium Tungsten Electrode Product main feature is non-radioactive, humans and the environment without any pollution, low electron work function . In an inert gas welding , easy arc starting , stable arc, arc repeatedly with high reliability , eliminating the use of cerium tungsten electrode welding seam black lines appearing on the sides . The Harbin Welding Institute tests , yttrium tungsten electrode life than about 1 times more cerium tungsten , because long service life , reducing the electrode grinding dust generated when heavy harm to human body . Optical flow of the gas discharge , the electrode sputtering low activation conditions than thorium tungsten electrode width and easy handling , low voltage lighting fire , resistance to ion bombardment high-performance, operating voltage and arc stability, life doubled. The main technical indicators: yttria content of 0.8-22 %, respectively. 
Yttrium tungsten electrode welding, arc beam slender, compression large, medium and high current penetration is relatively large when it is mainly used in military industry and the aerospace industry.
Zirconia doped tungsten , zirconium production of tungsten electrodes . Specific data is as follows :
Other Grades of dopant Doping Doping electron work function color Coating head
WY YO2 1.80 ~ 2.20% <0.20% 2.0 ~ 3.9 blue
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A Microwave Oven Magnetron Yttrium Rhenium Tungsten Electrode Preparation Process and Microwave Oven Magnetron Yttrium Rhenium Tungsten Electrode Preparation Method of Fabrication
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- Category: Tungsten Information
- Published on Monday, 14 October 2013 15:10
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A microwave oven magnetron tungsten rhenium and yttrium electrode production method disclosed preparation 
of a tungsten- rhenium yttrium microwave oven magnetron cathode , characterized in that it has a composition by weight percentage calculated including 0.3-3 % yttrium , rhenium 0.1-2 % tungsten margin. This microwave oven magnetron rhenium tungsten electrode preparation of yttrium and production methods disclosed yttrium tungsten rhenium microwave oven magnetron cathode preparation process , the product of this invention is brittle and high temperature performance , enhanced product plasticity, work performance, strong plastic, low production cost, no radiation, to achieve the same effectiveness of the work can greatly reduce its operating temperature , which can significantly reduce the temperature of the metal electrode material requirements , environmental compliance , and can significantly reduce manufacturing costs.
(1 )A tungsten- rhenium yttrium microwave oven magnetron cathode , characterized in that it has a composition by weight percentage terms comprises 0.33% yttrium , 0.1-2 % rhenium , tungsten margin.
(2) As claimed in claim 1, wherein the tungsten- rhenium yttrium A microwave oven magnetron cathode , characterized in that the microwave oven magnetron cathode yttrium tungsten rhenium content is preferably calculated as a percentage by weight : 0.62% yttrium , rhenium 0.5 1% tungsten margin.
(3 )According to claim 1 or 2, wherein the tungsten- rhenium yttrium A microwave oven magnetron electrodes , characterized in that the microwave oven magnetron cathode yttrium tungsten rhenium spring-like structure , an outer diameter of 24mm, diameter of 0.3,0.5 mm.
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WY20 Yttrium Tungsten Electrode
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- Category: Tungsten Information
- Published on Monday, 14 October 2013 15:00
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WY20 Yttrium tungsten electrodes for TIG welding blue , which is a tungsten matrix by powder 
metallurgy method of incorporation of about 0.3% -5% of a rare earth element , such as : cerium, thorium , lanthanum , zirconium, yttrium and the production of tungsten alloy strip , and then after pressure processing, diameters from 0.1 to 80mm, standard length from 75 to 600 , while the most commonly used specifications for diameter 1.0,1.6,2.4 and 3.2 , electricity extreme in terms of the shape of the TIG is a important factor when using DCSP , the power ground terminal to be pointed shape , and the angle of the tip with the application, electrode diameter , and welding current to change , narrow tip joint requires a smaller angle , when the welding very thin material, to be low current , like the needle electrodes for a minimum to stabilize the arc , and to ensure proper grounding electrode arc easily , good arc stability and appropriate weld bead width . When the AC power to the welding, grinding electricity without the extreme , because using the appropriate welding current, electrode terminals will form half of the ball , if the increase in the welding current, electrode tip becomes bulb -shaped and may melt and contaminate molten gold .
Yttrium tungsten electrode ( grades WY20) in the welding arc beam slim , compress large degree , in the medium and high current penetration is relatively large , mainly used in military industry and the aerospace industry .
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