Tungsten Copper Dart

Copper tungsten darts are made ​​of tungsten copper alloy , typically containing tungsten content of 70 % -80 %. Many types of darts , production materials are also varied. Tungsten copper and copper tungsten darts combines the characteristics of organized crime , excellent performance with high density and good processability. Tungsten Copper Dart with its unique advantages , gradually replacing copper darts. Copper -plated tungsten dart barrel and processed refined appearance overall slender , practical, to overcome the shortcomings of other materials darts , not damaged, and long service life .

Tungsten copper alloy is used in darts production because of tungsten and tungsten-copper alloy with copper features a high density material , and has good workability. Because tungsten copper alloy with high weight volume ratio , so there is a slim darts good manufacturing materials . The percentage used to produce tungsten content higher darts , darts more slender. Due to technical difficulties with the manufacture , 100% of the tungsten is present in the dart barrel . In fact, people buy all the " tungsten " darts are made of tungsten alloy . Tungsten copper rod is raw copper tungsten dart dart dart barrel .
Better toughness of tungsten copper dart , darts surface to copper, tungsten content which is generally 70% to 80%. Some darts players , especially old-timers , in use for some time in the future , like the kind of tiny grooves grip the metal surface.


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Tungsten Copper Sintering Phase

 Tungsten Copper  sintering  phase is made of high temperature liquid phase sintering tungsten powder and copper and mixing, pressing, sintering and prepared liquid process for copper tungsten composites. Traditional methond is usually higher than the melting point of the copper at the temperature above 300 ℃ what is the temperature of densified liquid sintering phase.The production process of sintering is simple, and there is a higher sintering temperature. The sintering time is long, and

the sintered density is low (only for the theoretical density of 90 to 95).Other shortcomings, can not meet the requirements. Therefore, in order to improve the density of the material after the liquid-phase sintering treatment step to be associated with increased pressure such as multiplexing, hot pressing, hot forging, etc., but it increases the complexity of the process, the application is limited. AK Bhallal8 et al prepared using explosive compaction of tungsten copper material, has good high temperature liquid phase sintering effect. In addition, the high temperature liquid phase sintering process of discovery, tungsten, copper powder particle size also affects the sintered tungsten-copper composite material density, the finer the powder, the higher the density obtained by sintering.

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Tungsten Copper Infiltration Method

The method of  tungsten copper infiltration is that tungsten powder is pressed into briquettes , calcined at a temperature to prepare a porous tungsten skeleton with a certain density and strength , and lower melting point of copper to melt infiltrated tungsten skeleton , whereby the denser methods tungsten copper materials. When the mechanism is a porous metal substrate wetting liquid , the liquid metal filling the pores of the porous tungsten skeleton capillary force in the gap along the particle flow ,

so as to obtain a denser material. This method can improve the toughness of tungsten copper materials. Infiltration prepared using high- density tungsten-copper composite material , its good thermal and electrical conductivity , but difficult to achieve tungsten skeleton and pore connectivity all the same size , and the infiltration of the product after it is difficult to ensure the distribution of copper uniformity , which is bound to affect the material properties. With powder plasticized near net shape technology development and modern science and technology to improve the shape of the complexity of the components required for the preparation of tungsten skeleton from a single conventional powder metallurgy molded and injection molding to extrusion direction. If the United States RM German , who used injection molding technology to prepare tungsten skeleton , get good results , they will be pre-prepared tungsten skeleton of calcined at 900 ℃ , at 1500 ℃ infiltration 9O ~ 120min, superior alloys obtained . Due to the excellent performance of the method for preparing tungsten-copper composite material , therefore the most widely used . However , this method is also a great lack of specific performance after infiltrating need to be machined to remove excess copper , increasing the cost of the machining sequence , reducing the yield , but also not conducive to the complex shape parts adopted .

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Tungsten Copper and Silver Tungsten Processing Considerations

Tungsten copper and silver tungsten alloy may be due to impact or excessive force and lack of processing load occurs in the production of thin-walled corners. Tungsten, copper and silver tungsten alloy products when making through-hole drilling
Please note coming through holes in the load force feeding, avoid processed lacking.
Tungsten, copper and silver tungsten alloy non-magnetic, Guang Yi Rong company clients before the job can be grateful to confirm the product has been firmly fixed.
2 EDM, wire cutting
Tungsten copper and silver tungsten product discharge wire cutting speed is relatively slow, is a normal phenomenon.

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Tungsten Copper Vacuum Contact Materials

Tungsten copper vacuum contact materials have very good machining properties and thermal shock resistance, due to the arcing contact and breaking contact, Tungsten copper vacuum contact materials within a few tenths of the time the temperature rises several thousand degrees Celsius. We produced the W-Cu contact material due to its excellent physical properties and is widely used.
Advantages: High ablation resistance, high toughness, good electrical conductivity, thermal conductivity. Good machinability.
Delivery status: copper, steel and other support links good variety of shapes W-Cu contacts
Semi-finished products: No infiltration processing of various casting materials; various contacts unprocessed, welded or brazed to the copper or steel support; welding or brazing process.

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Tungsten Copper

Tungsten copper materials composed of two elements. Tungsten and copper do not form a solid solution, an intermetallic compound is not formed, but the respective metal components independently and uniformly exists. So start called a "fake alloy", was also classified as "composite" in. Having a tungsten skeleton (skeletal density is generally 70% to 86% of theoretical density) tungsten copper material at high temperature, the molten
copper, the heat of evaporation and absorption of the surface of the substrate W has a cooling effect, as the human body to reduce sweating Like temperature, sweating is a metal material. Tungsten has a high melting point, high strength and high hardness, copper has good electrical conductivity, thermal conductivity and toughness, tungsten, copper and copper tungsten material consolidated performance with high value.



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Tungsten Copper Electronic Packaging Materials

Tungsten Copper Electronic Packaging Materials, both low expansion characteristics of tungsten , and high thermal conductivity characteristics with copper Particularly valuable is the thermal expansion coefficient and thermal conductivity properties can be designed by adjusting components of the material and thus to the material, application has brought great convenience. We use high quality raw material purity , by press-forming , high-temperature sintering and infiltration , the excellent performance of W-Cu electronic packaging materials and heat sink material . And power device package suitable material, such as a substrate , the electrodes and the like ; performance of the lead frame ; military and civilian thermal control device and the thermal control plate radiator.
Advantages : a different matrix matches the thermal expansion coefficient and high thermal conductivity ; excellent high temperature stability and uniformity ; excellent processing performance ; composite electrode tungsten copper and iron binding.

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Copper Tungsten Rod

The copper tungsten round rod is ground to achieve the precise shape and size, meets American Welding Society RWMA Class 10 specifications, and has a precision tolerance. Copper tungsten provides high wear resistance, electrical and thermal conductivity, and corrosion resistance.

Copper tungsten is a high-strength composite of two metals: copper and tungsten. It combines the benefits of conductivity of copper with the heat and wear resistance of tungsten.

1, Diameter: 1.5-100.0mm
2, Length: 50-1000mm
3, Density: 12.60-17.05 g/cm3
4, Composition: W 55-90%, Cu 10-45%
5, Surface: Sintering surface, Forged surface, Ground surface

Tensile strength, used to indicate the material's overall strength, is the peak stress it can withstand before it breaks. Corrosion resistance describes the material's ability to prevent deterioration caused by atmosphere, moisture, or other medium. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation.

Copper tungsten Alloy (WCu) is the composite of tungsten and copper which own excellent performance of tungsten and copper. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and aviation.


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Copper Tungsten Electrode

Copper Tungsten Electrode owns both the low-expansion properties of tungsten, but also has high thermal conductivity properties of copper, its thermal expansion coefficient and thermal conductivity of conductive material can be adjusted to change the composition and thereby to the material provided to facilitate the use.

Technics: Copper infiltered Tungsten block in vacuum high-temperature stove.
Applications: Copper tungsten products are used in sealed cap for transistors sealing welder,   contactor materials for high-voltage switches, electrodes for spark processing, circuit breakers, and etc.
Virtue : Copper tungsten electrode has high physical and mechanical properties, as well as high thermal and electrical conductivity.
Supply State: Sintering, Turning, Grinding, finishing.

Supply Shape: We can supply copper tungsten in rods, rings, plates and other other abnormal pieces.

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Copper Tungsten Superior Wear-Resistance

Copper–tungsten (tungsten–copper, CuW, or WCu) alloy is a pseudo-alloy of copper and tungsten. As copper and tungsten are not mutually soluble, the material is composed of distinct particles of one metal dispersed in a matrix of the other one. The microstructure is therefore rather a metal matrix composite instead of a true alloy.
Tungsten alone is a very brittle metal with a high melting point, however the combination of copper and tungsten delivers a relatively hard material with superior arc and wear resistance, high physical properties at elevated temperatures, and good electrical and thermal conductivity.
Chinatungsten offers copper tungsten in round bars, square bars and flat bars with standard sizes available for immediate shipment or taylor-made sizes manufactured to order.

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Tungsten Copper Heat Sinks

Tungsten Copper Heat Sinks is a composite of tungsten and copper. It owns high thermal conductivity and excellent hermeticity,excellent size control, surface finish and flatness. The coefficient of thermal expansion (CTE) of the composite can be disigned by controlling the content of tungsten, matching that of the materials, such as Ceramics (Al2O3, BeO),Semiconductors (Si),Metals (Kovar), etc. The features of this product are High thermal conductivity,excellent hermeticity
excellent size control, surface finish and flatness.Semi-finished or finished (Ni/Au plated) products availableThe products are widely applicated in the fields such as radio frequency,microwave,high power diode packaging and optical communication system.

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Tungsten Copper Sheet(75-90WCu)

Since it has both tungsten and copper's character,the copper tungsten is very popular used in the EDM, because of it has very good wear resistance. Our copper tungsten plate for EDM is made by vacuum infiltration technology, which has very good physical and mechanical properties.
 Our copper tungsten plate has below advantage:
 1 Maturity press- sinter-infiltration process without any porosity issue.
 2 high electrical conductivity get rapid cutting speed.

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CUW70 tungsten copper

CUW70 tungsten copper    Cu: W = 30:70 optimum discharge electrode

Tungsten is the preferred metal electrode material. Its strength, density, hardness is high, close to the melting point 3400 ℃, so the EDM process, the tungsten electrode actual loss is small.

But for pure tungsten electrode has two difficulties: a difficult process 2 expensive.

So take advantage of the plasticity of copper, high conductivity, etc., made ​​of composite materials, electrode treasures became - tungsten copper electrode.

Features: · Good breaking arc good thermal conductivity properties · · · High temperature thermal expansion does not soften

Advanced EDM electrodes:

For tungsten steel, high carbon steel, carbide, hardened tool steel using ordinary working electrode loss, low precision, slow processing shortcomings, the use of high conductivity copper tungsten, high melting point, thermal expansion characteristics, improve processing speed, accuracy.

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