Experience that connects. Since 1981.
In brazing and high-temperature brazing, we join components to form strong, durable, metallurgically bonded joints. The brazing process is particularly suitable for complex geometries and for multiple joints that are made in a single process step. The modular construction of assemblies makes it possible to simplify manufacturing processes and achieve economic benefits.
Brazing makes it possible to combine different materials, each with its own specific properties, in a single component. We process steel, stainless steel, copper, cemented carbide (tungsten carbide) and ceramics, among other materials. The resulting joints can withstand high mechanical loads, are leak-tight and free from troublesome flux residues. This produces reproducible, high-quality joints for demanding technical applications.
Production of tools with conformal cooling by vacuum brazing individual tool parts
Suitable for complex cooling geometries in injection moulds
Combination of vacuum brazing and hardening in a single process for targeted adjustment of the material properties
We can optionally carry out stress relief annealing and surface grinding of the brazing surfaces
Comprehensive materials and brazing expertise to support you as early as the design phase
Assessment of your component designs in terms of brazeability, and targeted agreement on potential optimisations for stable results with high process reliability.
Pre-assembly including correct positioning and secure pre-fixing of all components.
Application of filler metals in various forms – e.g. paste or rings – tailored to your specific requirements.
Brazing in modern continuous furnaces with protective atmosphere or – if required – by induction or under vacuum for the highest quality requirements.
Comprehensive checks to customer specifications, e.g.:
Visual inspection, dimensional inspection (gauging), straightening if required, leak testing (differential pressure, helium)
Unique component marking according to specification.
Professional packaging to your requirements for safe transport and further processing.
Joining a wear-resistant hard material layer to a cost-efficient base material – for the optimum balance of performance and cost-effectiveness.
Significant extension of the service life of components and tools, even under high mechanical and abrasive loads.
Durable joining of cemented carbide and base material through precisely matched brazing processes.
Selection of the optimum brazing process – vacuum brazing, controlled-atmosphere brazing or induction brazing – depending on material, geometry and application requirements.
Reproducible results and durable joints for demanding industrial applications.
Proven in numerous industries, including:
Support with the optimum design of your components – including the definition of joint clearances, surface conditions and insertion depths for reliable brazed joints.
Assessment of base materials and material combinations with regard to their suitability and the mechanical properties achievable through the brazing process.
Expert pre-treatment, filler metal application and pre-assembly by experienced specialists with many years of practical experience.
Selection of the appropriate furnace technology and development of tailored brazing programmes for reproducible results.
Use of optimally matched charging fixtures for secure and precise positioning in the furnace.
Complete recording and documentation of all relevant process parameters such as temperature profiles and holding times.
Comprehensive inspection of the brazed joints and traceable documentation of the results to ensure the highest quality standards.
We support you in the optimum design of your components – from defining suitable joint clearances to specifying the surface condition. The aim is to achieve reliable, reproducible and vacuum-tight brazed joints.
In addition to our core competence in vacuum brazing, we can take care of the complete procurement of the required individual parts on request – efficiently, with assured quality and from a single source.
Precise preparation and professional pre-fixing of the components are crucial to brazing success. Here you benefit from the many years of experience of our specialists and from established process standards.
Thanks to their high mechanical strength and excellent corrosion resistance, nickel-based filler metals have become established as the standard in vacuum and measurement technology. They are applied in a component-specific way – as paste or foil and precisely matched to the respective joint clearances.
Brazing takes place under high-vacuum conditions to ensure optimum diffusion processes and to achieve highly wettable, clean surfaces – a basic prerequisite for high-quality joints.
The brazed assemblies are tested by helium leak testing. This highly sensitive method can detect even the smallest leaks down to the order of 10⁻¹² mbar·l/s and meets the highest quality requirements.
To ensure complete transparency, components can – depending on geometry and size – be marked with QR codes. These contain all relevant process and production data.
Packaging is carried out in close consultation with our customers. Sustainable reusable packaging is our standard.
Development, mechanical engineering“Excellent advice right from the project phase. Whether vacuum, controlled-atmosphere or induction brazing – the team knows its stuff and always finds the right solution. Reliable, full of ideas and enthusiastic about their work.”
Project management, wear protection“Open communication, short response times and very good quality. The vacuum brazing of our assemblies shows the Harnischmacher team’s years of experience. As a customer, we feel well looked after all round.”
Purchasing, automotive supplier“A reliable partner for years – technically skilled, structured processes. Brazing quality and on-time delivery impress us time and again.”
Behind every project is a strong team. In Fröndenberg, we develop and find solutions for our customers that are in demand far beyond the region. Technical expertise, reliability, flexibility and personal support have made us a strong partner for industry and SMEs for many years.
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+49 2373 9772-30or
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