In the metalworking industry, there are processes that are not always visible in the final product, but which are decisive for its performance. Brazing is one such case: a precise, clean and effective joining technology, particularly relevant in metal components that require strength, leak tightness and repeatability.
At ETMA, brazing is integrated into the Assembly / Welding area, strengthening the company’s ability to develop and produce technical metal subassemblies with demanding functional requirements.
This capability becomes particularly relevant when combined with other industrial operations, such as tube forming, laser welding, the brazing of fittings and, where applicable, 100% leak testing. The result is components prepared for applications where every joint must perform its function with precision.
WHAT IS BRAZING?
Brazing is a metal joining process that uses a filler metal with a melting point lower than that of the base materials. During heating, this material melts and flows by capillary action between the parts, filling the joint area and creating a strong bond without melting the main components.
In practice, this technology makes it possible to join fittings, tubes, bushings, connections and small metal components, while maintaining the integrity of the parts, dimensional precision and stability of the assembly.
By enabling a uniform and controlled joint, brazing is particularly suitable for parts where the quality of the joint directly influences the functionality of the final component.
WHEN DOES BRAZING ADD VALUE?
In many industrial projects, complexity does not lie solely in the geometry of the part, but in the function it must perform over time.
A tube, a metal fitting or an apparently simple subassembly may have to ensure the passage of air, gas or fluid, withstand demanding conditions, maintain dimensional stability and guarantee efficient assembly in the final product.
This is where brazing adds value.
When properly industrialised, this technology makes it possible to combine several requirements in a single solution: leak tightness, joint strength, industrial repeatability, a clean finish and compatibility with complementary processes.
In applications such as technical piping, gas circuits, hydraulic systems, components subject to pressure or subassemblies intended for thermal systems, the quality of the joint is not a detail. It is an essential condition for ensuring safety, performance and compliance.
FROM FORMING TO FINAL VALIDATION: AN INTEGRATED RESPONSE
At ETMA, the true value of brazing does not lie only in the process itself. It lies in the way this capability is integrated into a broader production structure, aligned with the company’s system of 10 Integrated Production Processes.
In certain metal subassemblies, the part may go through different complementary stages: tube forming or bending, laser welding, brazing of fittings and, where applicable, 100% leak testing.
Tube forming makes it possible to create geometries adapted to the available space in the final product, ensuring suitable radii, angles and tolerances. Laser welding adds precision, speed and reduced thermal distortion. Brazing ensures the strong, clean and leak-tight joining of fittings or small components. And leak testing makes it possible to functionally validate the subassembly before delivery.
This integration reduces dispersed operations, improves coordination between processes and increases control over final quality. For projects with demanding technical requirements, it means a more stable, efficient and traceable response — from development through to series production.
Because, in these contexts, quality should not be assumed: it should be proven.
INDUSTRIAL APPLICATIONS OF BRAZING
Brazing can be applied to different types of metal components and subassemblies, namely tubular steel components, technical piping, air, gas or fluid circuits, welded or brazed metal fittings, subassemblies for the automotive industry, components for thermal systems and parts with leak tightness or functional validation requirements.
The versatility of this technology makes it particularly relevant in parts where the joint between components must ensure strength, precision and reliability over time
DISCREET TECHNOLOGY, HIGH IMPACT
Brazing is often an operation that is barely visible in the final product. However, it is precisely this discretion that reveals its importance: when the joint is clean, stable and functional, the process has fulfilled its purpose.
At ETMA, this capability strengthens the company’s response in the development and production of technical metal subassemblies, especially in projects where the joint between components must ensure strength, leak tightness and performance.
Integrated into the system of 10 Integrated Production Processes, brazing is part of a more complete industrial vision: producing with precision, controlling with method and delivering metal solutions prepared to meet the technical requirements of each project.
Because, in industry, quality is not always found in what is seen first. Very often, it lies in what keeps everything together.
DOES YOUR PROJECT REQUIRE PRECISE, LEAK-TIGHT AND RELIABLE METAL JOINTS?
ETMA combines technical expertise, production capacity and integrated processes to support the development and production of demanding metal subassemblies — from the project stage through to series production.
Talk to us and discover how we can support the development of your next metal component.