vacuum carburizing (LPC)
what is low pressure carburizing?
Low Pressure Carburizing (or Vacuum Carburizing as it is also known) provides a clean, modern approach to carburizing. This heat treatment which requires real precision, is one delivering low distortion of the original component whilst carburizing is achieved.
the process
Vacuum (low pressure) carburizing is an alternative technology to traditional gas (atmospheric) carburizing. Thus, it is a thermo-chemical treatment consisting of heating steel parts to temperatures usually in the range of 900-1000°C and heating them to a carburizing atmosphere. The purpose of carburizing is to enrich the surface layer with carbon and, consequently, increase its hardness and abrasion resistance while maintaining malleable core. Immediately after carburizing, hardening and tempering are most often performed, however, unlike traditional carburizing, it has a number of advantages resulting from both the used carrier gases – carburizing (C2H2 – acetylene), and the environment in which it is carried out – a vacuum furnace. Environmentally friendly – no CO2 emissions.
fields of application
Especially tool steel benefits from low pressure carburizing as the process delivers extremely long wearing surfaces, ideal for tooling operations.
The main advantages are:
- No oxidation at the grain boundaries (No IGO)
- Narrower range of CHD carburizing layer tolerance – smaller scatter of results
- Stability and repeatability of results
- Accurate carburizing of narrow holes, including blind holes
- Minimization of quenching deformations – resulting from the use of gas as a quenching agent
- Increasing the production efficiency by the possibility of carrying out processes at higher than traditional temperatures, i.e. 980 ° C and higher.
- Clean surface of details (silver metallic), no scale
- Environmentally friendly – no CO2 emissions
groundbreaking industries we serve
process locations
Any questions? Contact us directly or select a process location near you.
Letchworth
United Kingdom 51.9887569-0.2038797 info.letchworth@aalberts-st.com +44 1462 472100 show locationKalisz
Poland 51.736470518.03159 info.kalisz@aalberts-st.com +48 798 804 003 show locationDunningen
Germany 48.2249668.5003521 info.dunningen@aalberts-st.com +49 7403 92907-0 show locationUnsere Verfahren
Wir bieten weltweit alle Arten von Wärmebehandlungsprozessen an. Unsere Anlagen sind logistisch eng miteinander verknüpft, so dass Ihnen alle Verfahren zur Verfügung stehen. Erfahren Sie mehr zu unseren Wärmebehandlungsverfahren.
Heiß-Isostatisches Pressen (HIP) dient der Beseitigung von Porosität. Sie benötigen bei Lötverbindungen eine hohe mechanische Haltbarkeit und Unempfindlichkeit bei hohen Temperaturen? Wir bei Aalberts surface technologies bieten die Lösung durch Hartlöten (brazing).
Polymerbeschichtungen können auf viele Grundmaterialien aufgebracht werden und bieten lang anhaltenden Schutz. Sie sind mechanisch besonders gut mit dem Untergrund verankert und bieten verbesserte Gleiteigenschaften und/oder hohe Verschleißfestigkeit.
Mit 40 Jahren Erfahrung in der kontinuierlichen Veredelung von reel to reel können Sie sich auf Aalberts surface technologies verlassen, um innovative Lösungen zu finden. Unser Service umfasst Trommelgalvanik, kontinuierliche selektive Galvanik und Gestellgalvanik.
Fast alle metallischen Grundwerkstoffe können mit unseren selbstentwickelten und patentierten Verfahren durch Oberflächenbeschichtungen in ihren Eigenschaften optimiert werden, egal ob sie besonders hart, glatt, verschleißfest oder korrosionsbeständig sein sollen.
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We offer all types of heat treatment processes. Our facilities are closely interlinked in terms of logistics, which means that all processes are available to you. For a complete list and description of heat treatment technologies please select the button.
Hot isostatic pressing (HIP) is used to eliminate porosity. Do you need high mechanical durability and insensitivity to high temperatures for solder joints? We at Aalberts surface technologies offer the solution through brazing.
Polymer coatings can be applied to a wide variety of base materials and offer long-lasting protection. They are particularly well anchored mechanically to the substrate. Additional enhancement layers allow non-stick coatings to be combined with improved sliding properties and/or high wear resistance.
With 40 years of experience in continuous reel to reel finishing, you can depend on Aalberts surface technologies to find innovative solutions that other companies might say are impossible. Our service includes barrel plating, continuous selective plating and rack plating.
Almost all metallic base materials can have their properties optimised by surface coatings using our proprietary and patented processes, regardless of whether they should be particularly hard, smooth, wear-resistant or corrosion-resistant.