Dumet wire

Suitable for soft glass sealing of electronic and electric light source devices with a certain coefficient of linear expansion.

Dumet Wire plays a pivotal role in light source manufacturing processes, serving as a critical link that ensures the functionality and longevity of various light products. From incandescent bulbs to modern LED fixtures, its unique properties make it an irreplaceable component in transforming raw materials into reliable light sources.

The manufacturing journey of light sources begins with material preparation, and Dumet Wire is carefully selected for its specific characteristics. In this phase, the wire is cut into precise lengths based on the type of light being produced—shorter pieces for small LED bulbs, longer ones for large industrial lamps. This cutting process requires precision to ensure consistency, as even minor variations in length can affect the final product’s performance. Specialized machinery is used to achieve clean, burr-free cuts, preserving the wire’s structural integrity and ensuring it fits seamlessly into subsequent manufacturing steps.

Next, the cut Dumet Wire undergoes forming, where it is shaped into the required configurations. For most light sources, this involves bending the wire into pins or leads that will connect the internal filament or LED chip to the external electrical circuit. The wire’s malleability allows it to be shaped into complex forms without breaking, while its tensile strength ensures the formed parts retain their shape during assembly. This step is crucial, as the shape of the wire directly impacts how well it connects with other components and fits into the light source’s housing.

A key stage in light source manufacturing is glass-to-metal sealing, where Dumet Wire truly shines. During this process, the wire is inserted into a glass enclosure—such as a bulb or tube—and heated to high temperatures. The nickel-iron core’s thermal expansion matches the glass, creating a hermetic seal that prevents air, moisture, or contaminants from entering the light source. This seal is vital for protecting sensitive internal components like filaments or LED chips, which can degrade quickly if exposed to external elements. Without Dumet Wire’s unique thermal compatibility, achieving such a reliable seal would be nearly impossible, leading to shorter lifespans and frequent failures in light sources.

After sealing, the wire undergoes electrical testing to ensure it conducts electricity efficiently. The copper coating’s high conductivity is verified, as any flaws in conductivity can lead to dim lighting or uneven performance. This testing phase helps identify and discard defective wires, ensuring only high-quality components proceed to final assembly. Additionally, the wire’s connection points are inspected to confirm they can withstand the electrical load of the light source, preventing overheating or short circuits.

In final assembly, the Dumet Wire leads are connected to the light source’s internal components and external terminals. This step requires precision to ensure secure connections that won’t loosen over time, even with repeated use. The wire’s strength ensures it can withstand the mechanical stresses of assembly and daily operation, contributing to the light source’s overall durability. Once assembled, the light source undergoes final quality checks, including testing under various temperature and voltage conditions, to confirm it meets performance standards—all made possible by the reliable performance of Dumet Wire.