The preparation method of niobium-zirconium alloy wire for electric light sources includes the following steps: First, the niobium-zirconium alloy ingot is dropped and drawn for forging to obtain the forging billet; Second, carry out the first-stage annealing treatment on the forging billet; Three, carry out die rolling to obtain the rolled billet; 4. Conduct the second-stage annealing treatment on the rolled billets; Five. Conduct roll die stretching to obtain the stretched billet; Six. Conduct the third-stage annealing treatment on the drawn billet; Seven. Conduct forming and stretching to obtain semi-finished wire materials; Viii. Carry out the fourth stage of annealing treatment to obtain niobium-zirconium alloy wire for electric light sources. The preparation process of the present invention is simple, easy to implement, with a high yield of finished products and high production efficiency. The niobium-zirconium alloy wire prepared by the present invention has excellent surface quality, outstanding mechanical properties and uniform grains, and can be widely used in the electric light source industry.
High-pressure sodium lamps made of niobium-zirconium alloy are the third-generation new type of electric light source. They have the advantages of high luminous efficiency, low power consumption, long service life, strong fog penetration ability and no insect attraction. They are widely used in the field of electric light sources at home and abroad, including lighting in highways, airports, docks, shipyards, stations, squares, industrial and mining enterprises, parks and other places. Niobium-zirconium alloy has a similar coefficient of thermal expansion to the ceramic components of high-pressure sodium lamps. Therefore, high-pressure sodium lamps made of niobium-zirconium alloy have an irreplaceable position in the electric light source industry. The traditional high-pressure sodium lamps use niobium-zirconium alloy as the tube material. With the continuous development and improvement of manufacturing technology, niobium-zirconium alloy wire materials have the potential to replace niobium-zirconium alloy tubes due to their advantages such as low price and high subsequent processing efficiency.
In the subsequent deep processing of niobium-zirconium alloy wire materials, that is, in the manufacturing process of high-pressure sodium lamps, a part of the wire material needs to be twisted into a tubular shape. To meet the requirements of deep processing, higher demands are placed on the mechanical properties, grain structure, and surface quality of niobium-zirconium alloy wire materials.
