Listemann - Thermal Processing of Technical Components

Listemann AG is an international acting company located in the Principality of Liechtenstein. Since 1990 we have offered our customers materials related know-how, from consultation to production. Listemann AG services include: brazing and heat treatment in vacuum and protective gas atmosphere, gas nitriding and nitrocarburising, sintering of MIM-components and materials and process engineering.

Our core technological competencies are thermal processes in vacuum and protective-gas atmosphere in order to produce or refine components. Services are offered in production facilities located in Liechtenstein, Switzerland and Poland. One of Europe's largest vacuum-furnaces enables treatment of spacious components up to 1.5m x1.8m.

Due to our competent network we are prepared to provide additional services such as gluing, thermal-sprayed coatings and electron-beam welding.

Brazing

Listemann AG is known worldwide as a specialist in brazing and is a sought-after development partner. Brazing is a thermal process in which a strong metallurgical joint is produced by the interaction between the base material and the liquid brazing-filler metal.

Customer benefits: vacuum brazing in particular offers new opportunities in product design to engineers. It enables new or improved functions with a high-level of innovation. A modular design of the components results in simplified production processes and savings in costs. The spectrum of applications ranges from simple tools up to high-tech components for the aircraft and aerospace industries.

Advantages:

• Reproducible quality
• High-strength, even at high operating temperatures
• No flux is needed
• Components with a large area can be joined
• Broad range of materials can be combined easily
• Minimal distortion
• No oxidation and discoloration from heat
• Hardening in the same process

Services: prototype, small-scale and full-scale production, hard and high-temperature brazing, support of customer projects through design consultation and process development.

Materials: low alloy steels, stainless steels, super-alloys, copper, copper alloys, nickel, titanium, titanium alloys, hard metals, engineering ceramics, cBN, diamond.

Hardening, annealing, nitriding and nitrocarburizing

We genuinely support our customers through active communication and close collaboration. We keep our decision paths short, problem solving is available quickly. Flexibility is our strength, and we can offer you short delivery-times in the event of bottlenecks.

Advantages of the individual processes:

• Vacuum hardening and vacuum annealing - oxidation-free heat treatment, low in distortion and environmentally friendly
• Gas nitriding and nitrocarburizing - thermochemical heat treatment, wear protective and corrosion resistant surfaces
• Protective gas atmosphere annealing - oxidation-free heat treatment, cost effective
• Air annealing - mainly oxidising heat treatment, very cost effective, only suitable if the surface is not of major importance or if the materials are not sensitive to oxidation

Our services and capacities:

• Vacuum hardening / -annealing (up to Ø 1,500mm, height 1,800mm - weight max. 2,000kg)
• Nitriding / nitrocarburizing (up to Ø 900mm, height 1,200mm - weight max. 1,600kg)
• Air annealing processes (up to Ø 2,000mm, height 2,100mm - weight max. 6,000kg)

Debinding and sintering of MIM parts

Listemann AG is the leading specialist in Europe for the processing of metal injection moulded parts. The service MIMPro (Metal Injection-Moulding Processing) comprises the debinding, sintering and heat treatment of moulded MIM parts. Various MIM alloys made with numerous commercial binder systems are processed.

Customer benefits: MIMPro combines the shaping capabilities of injection-moulding with the materials potential of powder metallurgy. Notably plastic injection-moulders now have the opportunity to manufacture complex premium metal parts with high-strength and excellent temperature and wear-resistance.

Advantages:

• Quick entry into an attractive growth market
• Faster product development and implementation
• No need for debinding and sintering equipment
• You benefit of the exclusive materials and processing know-how of Listemann AG

Services:

• Thermal, catalytic or solvent debinding
• High temperature sintering and heat treatment in a vacuum or controlled atmosphere
• Consultancy in process engineering and materials technology

Materials: low alloy steels, stainless steels, heat resistant steels, tool steels, hard metals, soft magnetic alloys, nickel- and cobalt-base alloys, copper and copper alloys, titanium.