Titanium alloy coil rod and production method thereof

Abstract

The invention provides a titanium alloy coil rod and a production method thereof. The titanium alloy coil rod comprises the following components in percentage by weight: 15.0 to 6.0 percent of A, 3.0 to 4.0 percent of V, less than or equal to 0.25 percent of Fe, less than or equal to 0.06 percent of C, less than or equal to 0.05 percent of N, less than or equal to 0.012 percent of H, less than or equal to 0.16 percent of O and the balance of Ti and unavoidable impurities. The titanium alloy coil rod is obtained by performing steps of heating, rough rolling, medium rolling, pre-finish-rolling, finish rolling, spinning looping, air cooling, coil collection and air cooling. According to the invention, heating only needs to be carried out once; the rhythm of production is rapid; production efficiency and yield of the titanium alloy coil rod are greatly improved; mass continuous production can be realized; heating cost is effectively reduced; the energy saving effect is obvious; large-coil heavy titanium alloy coil rod can be efficiently produced by utilizing the method; and the product has high size accuracy and good structure property.

Description

technical field [0001] The invention relates to a titanium alloy and a production method thereof, belonging to the technical field of processing and forming of nonferrous metal materials. Background technique [0002] Titanium alloy wire is widely used in aerospace, automobiles, tool connectors, medical devices and other fields due to its excellent corrosion resistance, high specific strength, and strong human affinity. The production of titanium alloy wire and wire usually adopts discontinuous rolling method, hot-rolling titanium alloy into wire and wire blanks of φ6~φ10, and then stretching them into wire or wire of required specifications. The existing production methods of titanium alloy wires and wire blanks are generally forging or rotary forging. Bad and bad. In recent years, there has also been a method of producing titanium alloy rods and wires by hot rolling. [0003] Chinese patent CN201110411752.3 provides a processing method for producing large-scale TC4 tita...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN201110411752.3 provides a processing method for producing large-scale TC4 titanium alloy rods. This method obtains TC4 titanium alloy rods with a diameter of 200 mm to 400 mm and a length of not less than 2500 mm through multi-fire forging. Products with uniform grains and few internal defects can be obtained, but they need to be forged with multiple fires, the process is complicated, labor-intensive and time-consuming; Chinese patent CN200610069108.1 provides a method for rolling titanium and titanium alloy rods through a three-roll Y-shaped continuous rolling mill The method of wire rod, this method only needs to be heated once, and continuous production is carried out to obtain coiled wire blanks with a diameter of 8-30mm, and the unit weight of the product reaches 50-100kg. Compared with traditional forging or swaging, the product consumes less energy , production efficiency and dimensional accuracy of rolled pieces have been significantly improved

However, with the increasing market demand for titanium alloy wire rods and the continuous improvement of users' requirements for single coil weight and product quality, the existing technology still shows shortcomings such as low production efficiency and unstable product quality.