HMH Metal Industries Surat, Gujarat

Tungsten: a metal with superlative properties As pure metal, tungsten has not only the highest melting point of all metals (3, 422°C) and the lowest degree of thermal expansion, but it is also very dense (19.3 g/cm³), has a high degree of mechanical strength and rigidity and very low vapor pressure.  Due to these and other outstanding properties, tungsten is indispensable in many key industries. Its high density, mechanical attenuation properties, high capability for absorption of ionizing radiation and ease of mechanical processing are used to their best advantage in tungsten heavy metal alloys based on: tungsten-nickel-iron (W-Ni-Fe), tungsten-nickel-cobalt (W-Ni-Co) and tungsten-nickel-copper (W-Ni-Cu). These alloys are used as mass balancing weights and attenuators in aircraft construction, in motors and power trains, as oscillating weights and centrifugal weights in machines and in equipment construction, and in medical technology for both protection from and focusing of ionizing radiation in x-ray and measuring devices. The high degree of thermal resistance in combination with very good thermal and electrical conductivity of tungsten-copper materials makes them particularly suitable for applications in high performance electrical switch contacts, as heat sinks in the electronic industry and as erosion electrodes. In the coatings industry, pure tungsten is used as a crucible material and for sputtering targets; in high temperature furnace construction it is used in heating equipment and thermal protection.  Highly diverse spectrum of grades with technical application support HMH Metal Industries produces tungsten metal powder by reducing tungsten oxides in a hydrogen atmosphere. We offer a highly diverse range of powder grades with average Fisher grain sizes from approx. 0.7 µm to >50 µm. We provide technical support in the selection of the powders suitable for specific applications and for questions regarding process optimization. Quality and raw material supply are assured HMH Metal Industries is known for excellent quality and expertise gained over many years in tungsten production. Modern, advanced systems and processes as well as experienced employees with related expertise guarantee a consistently high level of tungsten metal quality. To ensure a sustainable supply of raw materials, HMH Metal Industries also uses secondary raw materials. In a sophisticated recycling process , we obtain high quality ammonium paratungstate for producing new tungsten metal powder. We also offer our customers recycling services for tungsten products. At HMH Metal Industries , almost all tungsten containing residues or metal components can be reworked into new, high quality tungsten metal powder.

A brittle, hard metal, resembling iron and nickel in appearance, cobalt has a magnetic permeability approximately two thirds that of iron. It is frequently obtained as a byproduct of nickel, silver, lead, copper, and iron ores and is present in meteorites.This versatile metal has consolidated its position in traditional areas, such as superalloys, and has found greater use in some newer applications, such as in rechargeable batteries, Lithium cobalt oxide (LiCoO2) is widely used in Lithium ion battery electrodes. Nickel-cadmium (NiCd) and nickel metal hydride (NiMH) batteries also contain significant amounts of cobalt. Powder are used as ingredient of metal alloy, tungsten carbide products etc. A brittle, hard metal, resembling iron and nickel in appearance, cobalt has a magnetic permeability approximately two thirds that of iron. It is frequently obtained as a byproduct of nickel, silver, lead, copper, and iron ores and is present in meteorites. Cobalt is often alloyed with other metals due to its unusual magnetic strength and is used in electroplating because of its appearance, hardness and resistance to oxidation. Cobalt Metal Powder Typical Applications This versatile metal has consolidated its position in traditional areas, such as superalloys, and has found greater use in some newer applications, such as in rechargeable batteries Alloys Cobalt-based superalloys consume most of the produced cobalt. The temperature stability of these alloys makes them suitable for use in turbine blades for gas turbines and jet aircraft engines, though nickel-based single crystal alloys surpass them in this regard. Cobalt-based alloys are also corrosion and wear-resistant. Special cobalt-chromium-molybdenum alloys are used for prosthetic parts such as hip and knee replacements. Cobalt alloys are also used for dental prosthetics, where they are useful to avoid allergies to nickel. Some high speed steels also use cobalt to increase heat and wear-resistance. The special alloys of aluminium, nickel, cobalt and iron, known as Alnico, and of samarium and cobalt (samarium-cobalt magnet) are used in permanent magnets.

We are manufacturing, supplying and exporting a wide range of Fused Tungsten Carbide Powder to the clients, which is known for high hardness and outstanding abrasion resistance. These product are made using high-grade raw material, which we procure from the esteemed vendor of the market. Our range of product is used to manufacture diamond tools for cutting of very high abrasive materials. Some of the usage of this product is listed below: Manufacture brushes application in electric motor & generators Friction material for brakes.

When hardness is the point Tungsten carbide is a high performance material formed from tungsten and carbon. Its most outstanding property is its hardness, which approaches that of a diamond.  Tungsten carbide is primarily used in the production of a wide variety of industrial tools and wear parts that are subject to a great deal of stress. Many high performance processes, such as metal drilling, turning and milling, are only possible with the industrial application of tungsten carbide in carbide tools. Tungsten carbide with consistently high quality HMH Metal Industries provides a wide range of tungsten carbides, from very fine grades with an average grain size of approx. 0.5 µm to very large average grain sizes of approx. 50 µm. Moreover, nanocrystalline tungsten carbides are being tested in new applications and for increasing hardness.  Certified quality management ensures the high quality of our tungsten carbides with continuous analysis of its properties. In this way, our customers can rely upon the consistent, high quality of the products we supply, enabling them to produce high quality tools while reducing their own process costs. Process quality and raw material supply are assured HMH Metal Industries is known for excellent quality and expertise gained over many years in the production of tungsten carbide. With modern, advanced systems and processes, HMH Metal Industries's own production takes raw material to the intermediate product stage as ammonium paratungstate and then on to finished tungsten carbide. In this way, the product quality can be optimized over the entire process chain. Finally, experienced employees with related expertise and our quality management ensure both process and product quality.

We are manufacturing, supplying and exporting a wide range of Fused Tungsten Carbide Powder to the clients, which is known for high hardness and outstanding abrasion resistance. These product are made using high-grade raw material, which we procure from the esteemed vendor of the market. Our range of product is used to manufacture diamond tools for cutting of very high abrasive materials. Some of the usage of this product is listed below:  Application Manufacture self lubricating sintered bearing Manufacture contact material of current flow performance in arc resistance, adhesion resistance & contact resistance Manufacture brushes application in electric motor & generators Friction material for brakes Packing 1 kg and 5 kg packing in polythene bags.

We pre-blend ready-to-press tungsten carbide to achieve specific qualities of the powder. We can provide a sampling of some of our hundreds of standard grades to you so you can see the variety of functions our grade powders can serve.  Quality Check All powder is commercially uniform in purity. The Chemical and Physical Analyses are determined for each production lot of powder by using commercially accepted methods. The results of all relevant tests are reported to the customer on a Certificate of Analysis. Tungsten carbide grade powders are free flowing ready to press powders for use as raw materials in the production of cemented carbide tools, wear parts and other precision components. Each powder particle contains the components of the specified grade, for instance, tungsten carbide, cobalt, and alloy additions plus a wax binder. Because production of tungsten carbide tools and parts is closely linked to their starting materials, there must be a strong technical link between the powder supplier and the parts fabricator.