Product category:
Thermal and weld hardfacing, coating and overlaying
News Release from: Technogenia | Subject: Tungsten-carbide powder - hard facing
Edited by the Manufacturingtalk Editorial
Team on 18 April 2006
Tungsten-carbide gives high abrasion
resistance
Manufacturer of hardfacing products, has developed a special tungsten-carbide powder, which, when deposited on the tool's surface, provides exceptional abrasive resistance for various uses.
Manufacturer of hardfacing products, has developed a special tungsten-carbide powder, which, when deposited on the tool's surface, provides exceptional abrasive resistance for various uses In industries that use heavy-duty parts for mixing, grinding, or other techniques that subject the tools to significant wear and tear, anti-abrasion protection is imperative
This article was originally published on Manufacturingtalk on 12 Jul 2006 at 8.00am (UK)
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Optimized hardfacing systems protect diameters subjected to heavy stress and thrust surfaces with high-yield strength to mmet the needs of bricks and tile production in the ceramics industry.
Replacing these parts can be costly and time-consuming, slowing production and reducing quality of results.
Technogenia, a manufacturer of hardfacing products, has developed a special tungsten-carbide powder known as Spherotene, which when deposited on a tool's surface, provides exceptional abrasion resistance for various applications.
The incredibly strong carbide particles are applicable by a welded-on cast-nickel cord, thermal spray, special castings, or precision laser, providing almost 10 times a longer service life than with a more traditional chrome-carbide hardfacing.
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The tungsten-carbide hardfacing forms a metallurgical bond with the base metal on the part to protect against wear and impact.
The Spherotene powders consist of spherical particles of monocrystaline tungsten carbide that are extremely hard, between 1800 and 4000 HV (Vickers Hardness).
The applicable cords, Technosphere and Technodur, are reels of flexible, nickel-core wire coated with Spherotene.
These two types differ in carbide hardness and are available in diameters ranging from 0.1 to 0.5in to be welded to parts with an oxy-fuel gas torch for achieving the desired degree of anti-abrasion and impact protection.
The powders can also be applied as a thermal spray, using an oxy torch.
The Technokit 2000 is available for this hardfacing method, which is useful for thin application, glassworks industries, or even to serve as a rust-inhibiting undercoat.
Technogenia also has a method for hardfacing hard-to-reach areas of parts with complex shapes and inner diameters where conventional welding techniques would not work.
Known as Technocasting, this technique is similar to foundry methods, where a hard solder is combined with the tungsten-carbide and then injected into a mold.
Ideal for parts involved in ceramics or cement works industries, it maintains a very smooth surface and is suitable for short runs of parts.
For precision application on very small areas, such as along a thin edge, Technogenia's Lasercarb technique provides optimum results.
The carbide grains are combined with a metal binder and injected into a laser beam using a coaxial injection nozzle.
The mixture's application is digitally controlled for an extremely close deposit with a smooth finish, leaving the shape of the part being treated practically unchanged.
This method is particularly recommended for parts made of non-magnetic steel, such as in the oil drilling industry.
The Lasercarb technique has been licensed in the United States since 2002.
Specific to the food industry, each type of hardfacing powder has FDA approval and is well suited for stainless steel parts.
It is fit for use on equipment that comes into contact with food such as processing, extrusion, and granulation equipment.
Technogenia will present its products and services at the following trade shows in 2006: Offshore Technology Conference in Houston, USA, May 1 to 4; International Thermal Spray Conference and Exhibition in Seattle, USA, May 15 to 17, booth 420; and AWS Welding Show in Atlanta, USA, October 31 to November 2.
* About Technogenia - since 1979 Technogenia has provided hardfacing solutions for various industries such as oil drilling, mining, foundry, aluminum, iron and steel, paper, food processing, ceramic and brick, and waste recycling.
Today, Technogenia's solutions allow easy service for parts, direct on-site intervention without disassembly, and a longer parts lifetime.
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