Tungsten Copper Alloy Heat Sink

Product Description

The laser tungsten copper heat sink is to place an integrated circuit chip with certain functions in a suitable shell container to provide a stable and reliable working environment for the chip and protect the chip from or less affected by the external environment. Integrated circuits have stable and normal functions. At the same time, the heat sink is also the connection means for the transition of the output and input ends of the chip, and forms a complete whole with the chip. Heat sink materials are required to have certain mechanical strength, good electrical performance, heat dissipation performance and chemical stability, and different packaging structures and materials are selected according to the type of integrated circuit and the place of use.

Performance

The laser Tungsten Copper Alloy Heat Sink combines the advantages of metal tungsten and copper. It has both the low expansion characteristics of tungsten and the high thermal conductivity of copper. Its thermal expansion coefficient and thermal conductivity can be changed by adjusting the composition of tungsten copper. At the same time It also has a thermal expansion coefficient that matches silicon wafers, gallium arsenide and ceramic materials.

Technical Indicators

Tungsten-copper alloy combines the advantages of metal tungsten and copper, among which tungsten has a high melting point (the melting point of tungsten is 3410°C, and the melting point of copper is 1080°C), and its density is high (the density of tungsten is 19.34g/cm3, and the density of copper is 8.89 g/cm3) Copper has excellent electrical and thermal conductivity. Tungsten Copper Alloy Heat Sink has uniform microstructure, high temperature resistance, high strength, arc ablation resistance, and high density; moderate electrical and thermal conductivity, Tungsten Copper Alloy Heat Sink is widely used It is widely used in aerospace, aviation, electronics, electric power, metallurgy, machinery, sports equipment and other industries as parts and components for high temperature resistant materials for military use, electrical alloys for high voltage switches, electrodes for electrical processing, and microelectronic materials.

(1) Military high temperature resistant materials

Tungsten-copper alloys are used in aerospace as missiles, rocket engine nozzles, gas rudders, air rudders, and nose cones. The main requirements are high temperature resistance (3000K~5000K) and high temperature airflow resistance. The sweating and cooling effect formed by volatilization (copper melting point is 1083°C) reduces the surface temperature of tungsten copper and ensures the use under extreme conditions of high temperature.

(2) Electrical alloys for high voltage switches

Tungsten-copper alloy is widely used in high-voltage switch 128kV SF6 circuit breaker WCu/CuCr, high-voltage vacuum load switch (12kV 40.5KV 1000A), and lightning arrester. The high-voltage vacuum switch is small in size, easy to maintain, and has a wide range of applications. Use in flammable, explosive and corrosive environments. The main performance requirements are arc ablation resistance, fusion welding resistance, small cut-off current, low gas content, and low thermal electron emission capability. In addition to the conventional macro performance requirements, porosity and microstructure properties are also required, so special processes are required, such as vacuum degassing, vacuum infiltration and other complex processes.

(3) EDM electrode

Copper or graphite electrodes were used in the early days of EDM electrodes, which are cheap but not resistant to ablation, and have basically been replaced by tungsten copper electrodes. The advantages of tungsten copper electrodes are high temperature resistance, high temperature strength, arc ablation resistance, good electrical and thermal conductivity, and fast heat dissipation. Applications focus on EDM electrodes, resistance welding electrodes and high voltage discharge tube electrodes.

Electrode processing electrodes are characterized by a wide variety of specifications, small batches and large quantities. The tungsten copper material used as the electrode for electromachining should have the highest possible density and uniformity of structure, especially the slender rod-shaped, tubular and shaped electrodes.

(4) Microelectronic materials

Tungsten copper electronic packaging and heat sink materials have both the low expansion characteristics of tungsten and the high thermal conductivity of copper. Wide range of applications. Because tungsten copper material has high heat resistance and good thermal conductivity, and at the same time has a thermal expansion coefficient that matches silicon wafers, gallium arsenide and ceramic materials, it is widely used in semiconductor materials. It is suitable for high-power device packaging materials, heat sink materials, heat dissipation components, ceramics and gallium arsenide bases, etc.

Tungsten-copper composite material is a two-phase structure pseudo-alloy mainly composed of tungsten and copper elements. It is a metal-based composite material. Due to the large difference in physical properties between metal copper and tungsten, it cannot be produced by melting and casting. Generally, powder alloys are used. technology for production.

Tungsten copper alloy has a wide range of uses, most of which are used in aerospace, aviation, electronics, electric power, metallurgy, machinery, sports equipment and other industries. Secondly, it is also used to manufacture contacts of high-voltage electrical switches resistant to arc ablation, rocket nozzle throat linings, tail rudders and other high-temperature components, as well as electrodes for electrical processing, high-temperature molds, and other electrical and thermal conductivity and high-temperature applications. occasion. Tungsten-copper alloy combines the advantages of copper and tungsten, high strength, high specific gravity, high temperature resistance, arc ablation resistance, good electrical conductivity and heating performance, and good processing performance. Using high-quality tungsten powder and oxygen-free copper powder, applying isostatic pressing (high temperature sintering-copper infiltration), to ensure product purity and accurate proportioning, fine structure and excellent performance. Good arc breaking performance, good electrical conductivity, good thermal conductivity, and small thermal expansion. Because tungsten and copper are incompatible with each other, tungsten copper alloy has low expansion, wear resistance, corrosion resistance of tungsten and high electrical and thermal conductivity of copper, and is suitable for various mechanical processing. Tungsten-copper alloy can be produced and sized according to user requirements. Tungsten-copper alloy generally adopts the process of powder metallurgy, first powder making-batching mixing-press molding-sintering infiltration.

• Tungsten copper electrodes

welding electrode

Tungsten copper alloy has high temperature resistance, arc ablation resistance, high specific gravity and high electrical and thermal conductivity, and is easy to machine and suitable for welding electrodes.

• Tungsten copper alloy rod

Tungsten copper is a composite material refined by the process of static pressure forming, high temperature sintering and copper infiltration, taking advantage of the excellent metal properties of high-purity tungsten powder and the plasticity and high conductivity of high-purity copper powder. Good arc breaking performance, good electrical and thermal conductivity, small thermal expansion, no softening at high temperature, high strength, high density, and high hardness.

• Tungsten copper electronic package

Tungsten copper electronic packaging material: It has both the low expansion characteristics of tungsten and the high thermal conductivity of copper. Its thermal expansion coefficient and electrical and thermal conductivity can be changed by adjusting the composition of the material, thus providing convenience for the use of the material.

• Tungsten copper tube

Tungsten-copper alloy tubes are widely used in hard alloys and insoluble metals. Because tungsten-copper alloy is easy to machine, the use of tungsten-copper tubes plays a big role when the surface needs to be easy to machine and the inner diameter is small.

• Tungsten copper alloy wire

Precautions for use:

(1) Colloidal graphite cannot be placed on the surface of tungsten-copper wire. When the temperature is above 1000 degrees, avoid putting tungsten-copper wire together with iron, nickel, and carbon. Tungsten copper wire must be placed in a dry place, and the relative humidity should not exceed 65% of the room temperature. Avoid putting it together with acid or alkaline things.

(2) After cleaning the tungsten copper wire, it should be placed in a dry container to avoid direct contact with air to prevent oxidation.

Our Company

Qinhuangdao Zhongwei Precision Machine Parts Co., Ltd. is a high-tech enterprise integrating production, manufacturing and development of special alloy materials. The company was established in 1997. The company is located in Qinhuangdao Industrial Park, the most successful industrial development zone in China, covering an area of 8,000 square meters. The company has more than 100 employees, more than 10 senior technicians and 3 senior engineers. The company specializes in the production of deformed superalloys, cast superalloys, corrosion-resistant alloys, precision alloys, heat-resistant steels, nickel-based alloys, cobalt-based alloys, special stainless steel and other special materials, with an annual production capacity of 5,000 tons, using powder metallurgy and metal injection molding processes and other products. Products are widely used in petrochemical, aerospace, shipbuilding, energy, military, electronics, environmental protection, machinery, instrumentation and other fields. The use characteristics are: high resistance, high temperature resistance, corrosion resistance, wear resistance, fatigue resistance, etc. The products can be produced in accordance with national standards, industry standards and foreign standards, and corresponding products can also be provided according to the special needs of customers. Passed ISO9001 quality system certification. The company has advanced technology and equipment, the main equipment includes 1T vacuum induction furnace, 2T/1T medium frequency induction melting furnace, 1T/500kg electroslag remelting furnace, 20 sets of 30kg electroslag remelting furnace and two forging hammers, a complete set of cold-rolled steel strip production line, It has advanced equipment such as frequency conversion speed regulation wire drawing unit, frequency conversion speed regulation hydrogen annealing production line, and a physical and chemical experiment center with spectrometer, metallographic instrument, flaw detector, tensile testing machine and other experimental equipment.

In recent years, the company has continuously developed new products, explored new technologies and new processes, and cooperated with many domestic scientific research institutes in research and development, and achieved fruitful results. Provide special steel materials and accessories for a number of key projects, and export orders have also increased steadily year by year. Over the years, it has won many honorary certificates in terms of quality and reputation awarded by provinces and cities. Strictly implement national standards, closely approach the international advanced level, and satisfy customers with product quality and high-quality services. Qinhuangdao Zhongwei Precision adheres to the service awareness of "customer first" and the quality concept of "product is character", and strives to cooperate sincerely with all users for common development.

Metal Injection Molding Process

Detection Systems