The present invention relates to a method for producing tungsten carbide shot peening rotary vane, which includes the following steps, glue; the tungsten carbide projectile code above has a good brush glue glass fiber web, said tungsten carbide projectile glass fiber web a plurality of rows, each row of code more grain, and to ensure that the code is good within 1.5 hours to prevent adhesive curing; glue applied to the code and its surrounding good projectiles; cured at room temperature for 15-20 hours, then together with PTFE sheet put together 100 ℃ oven cured eight hours; the projectile between the non-sprayed tungsten carbide end-prepared two-piece monolithic rotary vane with a thin rubber as an intermediary, with 502 adhesive bonding, pressure can be good. Hand bonded tungsten carbide pellets of the present invention, it will not cause pollution of non-ferrous metals in the blasting operation, and manual distribution of arbitrary strong adhesive pellets, good shot coverage, more in line with the requirements and shot peening the purpose.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The invention discloses a method for preparing a 5N purity tungsten bar or tungsten wire.

The method includes the following steps that (1) tungsten powders with above 5N purity are filled in a soft mold to be subjected to isostatic cool pressing to obtain an isostatic cool pressing blank; and (2) the isostatic cool pressing blank obtained in the step (1) is subjected to bar or wire manufacturing to obtain the 5N purity tungsten bar or tungsten wire. The tungsten bar or tungsten wire prepared by the method has the advantages that the purity can reach to above 5N (99.999%), and the tungsten bar or tungsten wire can be used for producing an electrode of a long service life gas discharge lamp. The method is high in production efficiency, stable in product qualities and suitable for industrialized production.




Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The invention discloses a treatment method for dephosphorized slag in tungsten metallurgy, and mainly relates to a method for extracting and separating tungsten from tungstenic dephosphorized slag generated by a dephosphorizing step in an ammonium paratungstate production process.

The treatment method specifically comprises the following steps: immersing the dephosphorized slag generated by the dephosphorizing step in the ammonium paratungstate production process to an aqueous solution; after full reaction in a reaction kettle by adopting special leaching agents and activating agents, filtering to obtain a decomposing liquid and dephosphorized decomposition slag; washing the dephosphorized decomposition slag to enable the tungstenic WO3 to be less than or equal to 1.5%; feeding the generated decomposition liquid into a subsequent tungsten extraction process.

According to the process, the comprehensive utilization rate of mineral resources is improved, the recovery rate of valuable metal tungsten is improved, and the process flows of reusing tungsten are shortened.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The method uses tungsten containing material including scheelite concentrate, high-calcium wolframite and its tailings, tungsten slime and refractory low-grade tungsten ore as material in producing tungsten compound. It features the addition of certain amount of aluminium oxide or aluminium salt and phosphate or oxides of phosphorus, 4-5 times leaching of ammonium paratungstate crystal obtained after the evaporation and crystallization of ammonium tungstate solution with 2-4% ammonium nitrate or ammonium chloride solution, and the precipitation of artificial white calcium tungstate from the ammonium paratungstate mother liquor and leaching liquor by adding ammonia water and sodium sulfide to regulate its basicity and then adding calcium chloride. The method has short technological process, high tungsten yield, low alkali consumption and no limit to P, Si and Ca contents in material and its product reaches the requirement of GB3457-820 to 0-level WO3 product.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The invention discloses a preparation method of high pressed compact strength tungsten powder by ammonium metatungstate (AMT) direct hydrogen reduction.

The tungsten powder prepared by the invention is directly formed into high-intensity pressed compacts without adding any forming agents, and the transverse rupture strength of the pressed compacts reaches 2.5 to 4.0MPa. The tungsten powder prepared by the invention can be widely used for preparing large tungsten products and tungsten alloy products. In the method, ammonium metatungstate is used for direct reduction, and calcination and other intermediate processes are not necessary, thereby process is simple and energy consumption is low.

The granularity of the tungsten powder prepared by the method is controlled to be homogeneous and the sintering activity is high, thereby being benefit for the preparation of high-performance tungsten products.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

This technique describes that the commercial sodium tungstate solution is added by H2O2 as complex agent, was decomposed directly into tungstic acid by sulfur dioxide, sulfite or bisulfite in low acidic hydrogen chloride of 0.5-2N at room temparature 10-28 deg.. This technique has abolished some processes like the remove of Mo and CaWO4 comparable to traditional process. It reduces the amounts of consuming-acid, consuming-energy and polution. The tungstic acid product is powder type, high purity, high activity and converted easity into other tungstate products. The yield of tungstic acid was about 98%, 10% higher than traditional one.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The utility model relates to an annealing tooling for tungsten or molybdenum metal plates and tungsten or molybdenum alloy plates.

The plate (1) to be annealed and a clamping plate (2) made of an industrial ceramic material are clamped in a staggered manner so as to form the composite layer annealing tooling constituted by the plate (1) and the clamping plate (2). The clamping plate (2) is made of silicon carbide, zirconium oxide, aluminum oxide and silicon nitride. The annealing tooling disclosed by the utility model has the advantages of being capable of ensuring the flatness and the roughness of the two surfaces of the plate after annealing of pure tungsten, pure molybdenum, tungsten-copper alloy or molybdenum-copper alloy plate, simplifying the post-machining procedure and improving the working efficiency.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The present invention discloses a method of regenerating a tungsten carbide powder is prepared.

For regeneration tungsten powder particle size larger than the surface area of ​​small, chemically active poor, difficult to directly use the traditional method of producing high-quality tungsten carbide problem, using a two-step method for regeneration of tungsten carbide, carbide powder. First by carbon black: = 3.0-3.5:100 tungsten powder (weight) of the ingredients were mixed in a ball mill, the graphite tube furnace at a temperature of carbon 1800-2000 ℃, carbonization time was 50-80 minutes at once carbide; and a carbon content analysis of the resulting compound of the carbide, the addition amount of carbon black and mixed in a ball mill, a carbon graphite tube furnace at a temperature in the carbonization 1500-1700 ℃, carbonation time of 60-90 minutes the conditions secondary carbonization.

The carbonized product was subjected to the second milling, sieved to obtain the final tungsten carbide products. The method is simple, easy to implement, stable income tungsten carbide powder quality.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

A high content of tungsten arc melting method tungsten alloy, comprising the following steps: ① raw material for tungsten powder compacts, get blank; ② blank broken into particles of tungsten powder compacts; ③ particles of tungsten powder compacts with other Metal materials are mixed, tungsten powder compacts weight ratio of the particles added 0.1% ~ 40%; ④ and then through the vacuum arc melting at least twice to obtain a uniform high tungsten content component tungsten alloy ingot. Preparation method of the present invention is to obtain the highest tungsten content of up to 40% of the ingredients uniformly, without segregation, high tungsten content alloy without inclusions.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

The present invention discloses a method for producing a copper-tungsten alloy of tungsten skeleton, using a metal compound surface-coated tungsten powder particles, obtained by the H2 reducing atmosphere to the metal-coated tungsten powder; and then mixed with a pore-forming agent made of copper-free mixture of After the powder, then pressing briquettes remove pore-forming agent, and finally sintered honeycomb pure tungsten skeleton, copper infiltration, that was the formation of tungsten skeleton copper tungsten alloy. This method of manufacturing copper tungsten alloy anti-burning performance, high reliability.

A method of manufacturing a copper-tungsten alloy of a tungsten skeleton, characterized by comprising the steps of: tungsten powder particle surface of the compound of the transition metal of the cladding layer, and in a hydrogen atmosphere at 600 ~ 1000 ° C to a reduction treatment ; Then, a pore forming agent added thereto were mixed uniformly mixed pressing compacts in a mold, then removing the pore-forming agent to form a tungsten honeycomb skeleton, and in a hydrogen atmosphere at 1450 ° C ~ 1550 ° C at a temperature pre-sintered tungsten skeleton is bonded, the final copper placed on a sintered tungsten skeleton, copper infiltrated tungsten between the skeleton, the skeleton is formed of copper tungsten, a tungsten alloy; compound of a transition metal of group NiCl2.6H20 , which was dissolved in absolute ethanol to form a solution of the tungsten powder coated particles; the pore-forming agent chosen paraffin wax dissolved in a solvent to form the oil was added; the specific method of removing the pore forming agent is: the pressing the briquettes in a hydrogen atmosphere to remove the paraffin wax at a temperature of 300 ~ 500 ° C; wherein the tungsten is placed on a copper skeleton after sintering conditions: hydrogen gas atmosphere at a temperature of: 1400 ° C ~ 1550 ° C.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com The above is rep