Rolling method of titanium rod

Abstract

The invention discloses a rolling method of a titanium rod. Through the combination of a three-roll Y-shaped continuous rolling unit, a two-roll continuous rolling unit and a no-twist continuous rolling unit, by adopting an appropriate pass sequence, an appropriate rolling speed and an appropriate reduction in pass, a pure titanium rod blank which is [Phi] 100 mm in diameter is subjected to primary heating; then the [Phi] 100 mm pure titanium rod blank heated to 650-800 DEG C is subjected to 4-6 passes of rolling through the three-roll Y-shaped continuous rolling unit till a [Phi] 80-50 mm rodmaterial or rod blank is formed; then the rod material or the rod blank is subjected to 8-12 passes of longitudinal continuous rolling by the two-roll continuous rolling unit till a [Phi] 20-10 mm rod material or line blank is formed; then by using the no-twist continuous rolling unit, the [Phi] 10 mm line blank rolled by the two-roll continuous rolling unit is subjected to 2-6 passes of rollingtill a [Phi] 8-6 mm line blank is formed; and the pure titanium primary rolling temperature is 700-800 DEG C, and the finish rolling temperature is 650-800 DEG C. The rolling method has the characteristics of energy conservation and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of processing methods for titanium rods, and relates to a rolling method for titanium rods. Background technique [0002] Titanium and titanium alloys have the characteristics of high specific strength, acid and alkali resistance, and strong affinity with the human body, and are widely used in aviation, medicine, petrochemical and other industries. At present, the domestic production of Φ30-8mm titanium and titanium alloy bars generally adopts three methods: forging, rotary forging, and rolling; Φ20-8mm titanium and titanium alloy coils generally adopt the rolling method. [0003] Existing method 1: forging [0004] Forging is one of the basic methods for blanking rare metals and forging bars, cakes, and rings. Forging equipment can use general equipment such as forging hammers and hydraulic presses, and special equipment such as precision forging machines can also be used for production. Φ30-20mm bars usu...

AI Technical Summary

Problems solved by technology

[0012] The advantage of 250 two-roller discontinuous rolling mill is that the electric control and transmission are simple, but the disadvantage is that the rolling speed cannot be changed according to the process requirements, which leads to: the rolling speed is only 1 gear, which is too low for the finished rolling mill, and the It is too fast for rough rolling; the temperature drops too fast, the unit weight of the product is small (about 5kg), it is difficult to produce small-sized products, and the product size fluctuates greatly; the production is unstable, the labor intensity is high, and too much depends on the skills of the operators

However, in the 1980s and 1990s in my country, the Y-type continuous rolling mill was applied to rolling steel wire rods and tungsten-molybdenum wire rods, but the Y-type rolling mill has not been applied to the production of titanium and titanium alloy rods and wires.