Technické zprávy

  • Heat Treatment of Steel

    This application note introduces a series of furnaces suitable for hardening, tempering and annealing of steel.
  • Continuous Strand Hardening and Tempering Furnace

    The split furnace processes two strands simultaneously through a pair of tubes side by side, at up to 15 metres/minute while ensuring the combination of hardness, temper, ductility, and flatness required by the customer.
  • Cement Testing and Pilot Plant production: Oven & Furnace Requirements

    Much has changed since Joseph Aspdin patented grey Portland Cement in 1824 with his son William making it commercially viable by 1842. In the 21st Century those who require cement have a vast array of solutions to choose from depending on the particular properties they require. ‘Everyday’ options other than Portland include white cement (low ferrite), rapid hardening (fine ground), masonry and sulphate resisting cements. This list continues to expand to over 20 common types of cement as manufacturers and research institutions work on new varieties and blends that can meet the challenges of the construction industry as it continues to push boundaries of the possible.
  • How coke is created in a coal testing oven or pilot plant

    Thanks to huge advances in metallurgy over the last three decades, 21st century steel production is transforming the globe and the built environment. Of course, a major part of the steel production process is the use of coke, which provides as much as 80% of the furnace's thermal requirements, the majority of the furnace's CO gas (which acts as a reducing reagent) and carbon for dissolution in the molten metal. As with any other manufacturing process, the quality of the raw material has a massive impact on the quality of the end product. It is therefore vital to ensure the coke is comprehensively tested.
  • Cement Testing for Compliance

    The compliance of cement with standards such as EN 197 / ASTM C 150 is a quality requirement. Quality assurance of the raw materials used in calcination and also during the clinker production is necessary. Carbolite Gero offers different furnaces that help to guarantee quality requirements are met during the production cycle.
  • Heat Treating 3D Additive Manufactured Parts

    At present, there are two main techniques used in the additive manufacturing of 3D metal parts, Electron Beam Manufacturing (EBM) and Direct Metal Laser Sintering (DMLS). These take time but are outstanding for creating complex or ‘impossible’ parts which cannot be created using traditional casting or machining methodologies. This has already resulted in the creation of a multitude of prototype pieces as well as countless ‘impossible parts’ for the aerospace, automotive, tooling and medical sectors.
  • Heat Treatment Solutions for Metal Injection Molding

    The Metal Injection Molding (MIM) process is a widely known and applied technology for producing small metal parts. A great variety of materials and, consequently, approaches have been developed. The MIM process always requires a combination of polymer and metal powder. The polymer in this mixture has two purposes. On the one hand, it serves the rheological properties that are needed for injection molding. On the other hand, it provides the mechanical stability of the so-called green parts. The metal powder itself has no mechanical stability at all in that stage of the process.
  • Graphitisation at up to 3000 °C - What is it good for?

    Graphite is a soft, slippery, greyish-black substance. It has a metallic luster and is opaque to light. Graphite is a good conductor of heat and electricity. Often graphite is simply named carbon. Under inert gas or vacuum graphite is extremely temperature-resistant which makes it an interesting material for high temperature applications.
  • Recycling and assessing precious metals

    Global demand for precious metals continues to soar, whether for jewellery or for use in industrial applications. While gold and silver have been used for thousands of years in jewellery, more recently precious metals are performing useful and specialist functions in chemical processes, electronics manufacturing, aerospace and automotive systems, eg catalytic converters. CARBOLITE equipment is used throughout the world both for recycling these relatively rare commodities and for assessing their purity. Two key processes in the precious metals market are smelting and cupellation
  • Optimizing solid fuel combustion for electricity generation

    Reliable and adequate power generation is a corner-stone of every industrialized country: an essential ingredient for successful economies and comfortable lifestyles. While other technologies continue to be developed, solid fuels are still extremely important. Coal provides around 30 % of global energy needs, 41 % of the world's electricity and is used in the production of 70 % of the world's steel.
  • Ceramic foam debinding and sintering in one process

    The Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) in Dresden, Germany, carries out research into advanced ceramics, ranging from preliminary research through to a wide range of sophisticated applications. IKTS are involved in the development of industrial powder processing technologies and the manufacture of prototype structural ceramics, functional ceramics and cermet (ceramic-metal hybrids).
  • Determining the CO2 reactivity of petroleum coke

    Calcinated petcoke is an essential ingredient in the production of aluminium. Its quality needs to be monitored continuously throughout the production process to ensure a high quality metal grade. As part of its range of coke testing furnaces, Carbolite has designed a special model for determining the CO2 reactivity of petroleum coke in accordance with ISO 12981-1. The furnace has a single, vertical, tubular heating zone which is integrated into the unit, giving a neat and compact design overall.
  • The future of ash fusion analysis

    Professor Ed Lester and Thomas Huddle, University of Nottingham, Patrick Daley, the EPSRC Centre for Doctoral Training in Carbon Capture and Storage and Cleaner Fossil Energy, and Paul Haigh, Carbolite Gero Ltd, UK, detail advances in ash fusion analysis.
  • Condensate-free debinding with vacuum furnaces

    Today techniques like pressing, rapid prototyping, powder metallurgy, siliconization and sintering are widely used production methods. Sintering, for example, is only the last step of a near-net-shape fabrication technology. Many processes, such as metal injection molding (MIM) for example, require a debinding step prior to the actual sintering.
  • Heat treatment at low pressures

    High temperature vacuum furnaces are used for heat treatment of samples at low pressure (down to 10-6 mbar) and under partial gas atmospheres. In the bottom loader version the bottom is lowered and driven out of the furnace. It then pivots forward to permit easy loading. This design makes the useable volume accessible from all sides and allows for exact placement of the sample thermocouples which measure the temperature of the sample.
  • High vacuum soldering and brazing with hood furnaces

    Nowadays many electronic components, for example devices used in satellites or aircraft, have to withstand challenging environments such as vacuum or extremely high temperatures. To manufacture reliable electronic components like these a connection between dissimilar materials is required.
  • High Temperature Furnace for Heat Treatment of Superconducting Magnets at CERN

    The high temperature furnace GLO 10 000 KE/09-1G from CARBOLITE GERO is tailored for the heat treatment of superconducting coils for CERN. The plant, which is going into full operation at the CERN site in the middle of this year, was introduced in detail to the technical press on 18 March 2016 by CARBOLITE GERO at its premises in Neuhausen.

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