Carbide Technology

by DURIT

Carbide Technology­— High tech for utmost precision

As a corporation dedicated to Carbide, we are engaged in specifically targeted applications in every step of your production processes. All parts, tools and components made by us are enormously wear-resistant, extremely durable, and highly versatile. Carbide solutions by DURIT meet and exceed highest demands.

WE SOLVE WEAR PROBLEMS

DURIT Hartmetall offers customized solutions against wear – from premium components to specialized wear protection coatings.
Rely on DURIT Hartmetall’s wear-resistant solutions for pumps, valves, tools, and mechanical parts
DURIT Hartmetall’s wear-optimized coatings extend equipment life and significantly reduce downtime.
High-quality products and coatings from DURIT Hartmetall effectively protect your manufacturing processes from abrasion and corrosion

Carbide­— Definition

Carbide describes a class of materials distinguished by high hardness and outstanding metallic properties. Cemented carbide is a sintered material which is made primarily from tungsten carbide and a binding agent.

Hard materials are usually Tungsten (WC), Titanium (TiC), Tantalum (TaC), Chromium (CrC) and other carbides. As binding agents we typically apply Cobalt (Co), Nickel (Ni), Iron (Fe) and Nickel-Chromium (NiCr). The most common combination to create Carbide is by using tungsten carbide and Cobalt (WC + Co).

CARBIDE CAN PROVIDE A BROAD SPECTRUM OF HARDNESSES AND VARIETY OF APPLICATIONS THROUGH NUMEROUS COMBINATION OPTIONS

Raw tungsten carbide pellets demonstrating extreme industrial hardness and superior wear resistance
Unprocessed tungsten carbide material with high industrial hardness and durability for wear-resistant applications
Close-up of raw tungsten carbide powder illustrating an extremely hard, durable material ideal for wear-resistant industrial tools

Mixing, Grinding, Drying

First the tungsten carbide, titanium carbide, chromium carbide as well as cobalt and nickel powders are mixed for the required application. Spray dryers ensure the mixture is dried.

Tungsten Carbide Production: DURIT’s hardmetal products impress with excellent wear protection and consistently high performance even under extreme conditions.
Tungsten Carbide Production: DURIT Hartmetall delivers wear-resistant products and coatings of the highest quality for optimal protection in industry and manufacturing. Tungsten Carbide Production: With DURIT Hartmetall, rely on innovative materials and coatings that guarantee maximum service life and wear protection.

Pressing, Compacting

Subsequent processing is accomplished with high-performance presses, that can exert up to 20,000 kN. The result is a compressed, chalk-like material, the so-called "green compact".

DURIT’s production includes high-precision pressing and compacting powders to create durable and robust materials.
In DURIT’s production, innovative pressing and compacting technologies ensure maximum density and optimal material properties. DURIT combines advanced pressing and compacting techniques to produce products with outstanding hardness and wear resistance.
DURIT Hartmetall represents precise carbide production using state-of-the-art pressing and compacting processes to manufacture wear-resistant materials.

Green compact processing

Shaping is accomplished by first rough machining the green compact using diamond tools. All geometries are realized by turning, milling, drilling and sanding.

Tungsten carbide green compacts are machined at DURIT with diamond tools, allowing precise shaping by turning, milling, drilling, and sanding.
Green compacts made of tungsten carbide are shaped at DURIT using diamond tools for rough machining, followed by turning, milling, drilling, and sanding to achieve exact geometries At DURIT, shaping begins with diamond tool machining of the green compact, enabling precise turning, milling, drilling, and sanding for complex component contours.

Sintering

For the final sintering process precise temperature and time are determined so that the carbide is entirely encased in the binder matrix. HIP-sintering of the carbide provides additional compacting and a homogenous, non-porous structure.

DURIT ensures material integrity through controlled sintering and HIP-compacting, resulting in fully bonded tungsten carbide with a homogeneous and pore-free microstructure.
DURIT ensures material integrity through controlled sintering and HIP-compacting, resulting in fully bonded tungsten carbide with a homogeneous and pore-free microstructure. For maximum strength in extreme applications, DURIT uses exact sintering cycles and HIP-processing to produce dense, pore-free tungsten carbide components.
Final sintering at DURIT is precisely controlled in terms of temperature and time, ensuring the carbide is fully embedded in the binder matrix. HIP-sintering achieves additional densification and a uniform, non-porous structure.

Physical inspection for subsequent processing

Only after comprehensive mechanical and physical tests for hardness, structure etc. are the blanks cleared for release.

To ensure reliability under extreme conditions, DURIT subjects each tungsten carbide blank to strict quality checks before release, including hardness and microstructural analysis.
Final release of blanks at DURIT follows thorough hardness, structural, and performance testing to ensure every component meets exact quality standards. Only after passing rigorous tests for hardness, structure, and material consistency are DURIT’s tungsten carbide blanks approved for further processing or delivery.
At DURIT, tungsten carbide blanks are only released after extensive mechanical and physical testing of hardness, microstructure, and other critical properties.

Sanding, eroding, polishing

Following the sintering process, the carbide is finished with diamond-set tools. This is mainly done with CNC controlled grinding machines. If complex geometries are desired, precision sink and wire EDM machines take over. Optional polishing improves surface quaity.

DURIT enhances precision and durability through expert sanding, eroding, and polishing techniques applied to tungsten carbide components.
Sanding and eroding are key finishing processes at DURIT to achieve tight tolerances and optimal surface quality in tungsten carbide components. At DURIT, sanding and eroding are used to refine geometries and prepare tungsten carbide parts for final polishing and high-performance applications.

Final inspection— for the perfect product

State-of-the-art measurement and testing technology completes the final step for DURIT certified production and processes. The result is best quality by DURIT Hartmetall.

DURIT’s certified processes are completed with high-end measuring and testing equipment to ensure premium tungsten carbide quality.
DURIT uses state-of-the-art measurement and testing technology in the final step of production to certify the quality of each tungsten carbide component. Final finishing at DURIT includes advanced testing and measuring systems to ensure certified processes and consistently high product quality.

Certified Processes with safety and quality

Blanks by DURIT are closer to the final product. They have a very low wear tolerance. Finishing is done with CNC grinding machines and EDM systems. Following certified DIN ISO 9001:2015 processes ensures consistently superior quality. In addition, we comply with certifications per ISO 14001 and ISO 50001 and fullfill the strict demands for effective environmental management and a progressive energy management system.

PARTS, COMPONENTS AND PRECISION TOOLS THAT MEET 100% OF THEIR EXPECTATIONS 

With DURIT Hartmetall, you benefit from wear-optimized materials and innovative coatings that guarantee maximum service life
DURIT Hartmetall provides high-quality, wear-resistant products and coatings for effective wear protection in industrial applications.

Targeted configuration of Carbide— properties

The amount of binder material and the grain size of the carbide determine specific carbide properties. A lower binder material content for example increases wear resistance. The choice of grain size determines hardness.

THE FINER THE GRAIN, THE HARDER THE MATERIAL
THE COARSER THE GRAIN, THE BETTER THE FRACTURE TOUGHNESS

The optimal composition for carbide depends on the demands and the application. With experience and know-how we are in a position to create the optimal part in a precisely configured material composition.

UTMOST PRECISON BY DURIT HARTMETALL

DURIT selects carbide grades and grain sizes based on application-specific requirements, ensuring optimal material composition and maximum precision.
The ideal tungsten carbide composition is defined by use case and wear demands. With in-depth expertise, DURIT tailors the grade and grain structure for each part.
Thanks to extensive know-how, DURIT develops precise carbide components by adjusting grain size and binder content to meet specific performance needs.
DURIT fine-tunes carbide grades and grain sizes to match each application – for maximum durability and precision in every part.

The amount of binder material content determines hardness and strength ::

Carbide— varieties by DURIT

With our broad variety of carbide grades we ensure reliability and profitability. Our parts, components and precision tools perform convincingly in all industries:

 

PUMP-, VALVE- AND COMPRESSORS

OIL, GAS, PETROCHEMICAL

CHEMICAL- AND PHARMACEUTICAL

SHEET METAL AND METAL PACKAGING

BLASTING- AND SURFACING TECHNOLOGIES

PAPER PROCESSING INDUSTRY

Metal shaping technology

POWDER PROCESSING INDUSTRY

RECYCLING AND MILLING/CUTTING TECHNOLOGY

Refractory INDUSTRY

AUTOMOTIVE INDUSTRY

ROOF CONCRETE INDUSTRY

PLASTICS INDUSTRY

FOOD Processing INDUSTRY

PLANT AND MECHANICAL ENGINEERING

 

Selection of application-specific carbide grades ::