The present invention provides a tungsten alloy smelting methods. Characterized in that:

The charge is heated to a temperature region; then adding a certain amount of tungsten ore concentrates with a reductant and a mixture.

Specific steps are as follows:

1) First, 100-110% the theoretical amount of material added to the steel material or iron in an electric furnace heated to a reaction tank 1540-1590 ℃, melted;

2) Then by mixing the tungsten concentrate, aluminum particles and sodium nitrate mixture to 70-110 kg / min m Speed ​​2 to join the tank; during feeding, continued heating, the furnace temperature was raised to 2500-3000 ℃;

3) After the addition, continue to add heat to the melt, maintaining a temperature above its melting point slag 7-20 minutes;

4) Stop heating the furnace to melt naturally cooled after solid baked.

Tungsten alloy smelting method of the invention has the smelting process short, simple application, low energy consumption, the advantage does not require ignition agent, reducing the amount of provincial and so on.


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The present invention provides a method for preparing cerium tungsten powder. Characterized in that:

Added to the tungsten trioxide or ammonium paratungstate after calcination at 800-850 ℃ WO3 in the cerium acetate solution,then stirred with a high pressure that concentrated by evaporation, drying, and finally through the primary and secondary reduction and sieved to prepare a tungsten ,which can group containing 1-8% (by weight), cerium oxide, cerium tungsten powder.

Tungsten cerium powder production method of the invention solves the conventional tungsten cerium powder preparation process of environmental pollution problems, the present invention is prepared by the process containing 1-8% (weight) of the tungsten raw powder of cerium oxide can be prepared in the cerium content 1.0-6.0% (weight) of the cerium-tungsten electrode material, thereby overcoming the electrode material is tungsten, cerium, cerium oxide content of more than 1.0% of the difficulties in the process, and the electrode material is tungsten, cerium 4-6% there are some substantive breakthrough in the range.


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The present invention describes a tungsten - copper - nickel - carbon high temperature resistant alloys, which are tungsten and tungsten carbide-based powder metallurgy products. Characterized in that:

Composition (weight percent) were as follows:

1) 15 ~ 60% WC, 15 ~ 30% Cu, 1 ~ 5% Ni, 1 ~ 6% C, balance W;

2) 15 ~ 60% WC, 15 ~ 30% Cu, 1 ~ 5% Ni, 1 ~ 6% C, 0.2 ~ 0.5% MoC, balance W;

3) 15 ~ 60% WC, 15 ~ 30% Cu, 1 ~ 5% Ni, 1 ~ 6% C, 0.2 ~ 0.5% Cr3C2, balance W;

Note: The alloys and their products, based on an average particle size of 6 ~ 8μm tungsten powder and tungsten carbide powder, and is less than the copper powder, nickel powder and carbon powder as the raw material 75μm, respectively, according to the milled mixture of the alloy composition, molded porosity (volume ratio) of 15 to 35% of the frame blank, and placed together with the added copper powder or copper skeleton rough vacuum or hydrogen furnace 1150 ~ 1440 ℃ protected molybdenum wire furnace is infiltrated sintered 0. 5 to 2 hours.

The present invention describes tungsten - copper - nickel - carbon high temperature resistant alloys, high-temperature operation is also applicable to the other need to wear the appropriate fields.


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The method of manufacturing an electrode cerium - the present invention provides a production of tungsten. Mainly characterized in that:

Ammonium solution tungsten and rare earth oxides as raw materials, by suspension crystallization, prepared paratungstate - rare earth oxide crystals, after reduction, burn, melt vertical machining processes, and ultimately made ​​products.

The present invention is relatively good compared with the existing wet, simplifying the two processes, save time and reduce energy consumption and improve productivity, and eliminates the process of release of NO2, SO2 and other hazards to the environment and the human body gas. Distribution of rare earth oxides in the matrix of tungsten in uniform dispersion, excellent electrode arc performance, long service life.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
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