Shenzhen Wuge Industrial Co., Ltd

Nickel titanium alloy wire is a high-tech material with memory effect and superelastic properties, widely used in medical devices, aerospace, intelligent control and other fields. Its unique physical and chemical properties make the processing technology relatively complex and require strict requirements. The processing of nickel titanium alloy wire mainly includes the following key steps:

Key steps in processing nickel titanium alloy wire

The first step is the preparation of raw materials. Nickel titanium alloys are usually used as raw materials in the form of alloy ingots, which require strict inspection to ensure their chemical composition meets the requirements. The uniformity and purity of alloy composition are the basis for ensuring the quality of the final product.

The second step is the melting and casting process. The melting of nickel titanium alloys usually adopts vacuum induction melting or arc melting methods, which can effectively avoid oxidation of the alloy in contact with air at high temperatures, ensuring the purity and uniform composition of the alloy. The melted alloy liquid is cast into billets through casting technology, which are usually in the form of bars or plates, providing a foundation for subsequent hot and cold processing.

The third step is hot working, which is one of the key steps in the manufacturing of nickel titanium alloy wire. The cast billet needs to be forged and rolled at high temperatures to refine the grain structure and improve the mechanical properties of the material. The alloy material after hot processing is usually processed into larger diameter rods or plates.

The fourth step is to use cold drawing technology to process large-diameter bars or plates into fine wires after hot processing. This process usually requires multiple cold drawing cycles, and intermediate annealing treatment is required after each cold drawing cycle. Cold drawing is one of the core steps in processing nickel titanium alloy wire, which gradually reduces the wire diameter to control its accuracy and consistency. Annealing treatment is carried out after each cold drawing process to eliminate the stress generated during the cold working process, restore the plasticity and ductility of the material, and ensure the continuity and stability of the wire during the drawing process.

Cold rolling process

The fifth step is surface treatment, which is another important step in the processing of nickel titanium alloy wire. The surface of the wire after cold drawing and annealing may have oxide scales and impurities, which need to be removed by methods such as acid washing or electrolytic polishing. Surface treatment can not only improve the smoothness of silk materials, but also enhance their corrosion resistance and surface quality, thus meeting high standard application requirements.

Finally, the processed nickel titanium alloy wire is straightened and cut to length to ensure that the straightness and length of the wire meet the customer's requirements. After rigorous performance testing, including inspections of mechanical properties, surface quality, and dimensional accuracy, it is ensured that nickel titanium alloy wires meet the standards.

In summary, cold drawing, annealing, and surface treatment are the most critical steps in the processing of nickel titanium alloy wire. Cold drawing determines the accuracy and consistency of the wire material, while annealing ensures the mechanical properties and ductility of the material. Surface treatment directly affects the final quality and application effect of the wire material.