Titanium ingot forging broadening technology

Abstract

The invention discloses a titanium ingot forging and widening process, which is characterized in that it comprises: erecting a titanium ingot with a diameter D under a forging press, forging and pressing it downward until the diameter of the upset titanium ingot is ≤ 1.2D; The rough titanium ingot is placed flat on the lower anvil of the forging press, so that the axis of the length direction of the titanium ingot is perpendicular to the axis of the press operating vehicle, and the titanium ingot after upsetting is rolled. In actual production, the width of the titanium billet is controlled to be the final continuous rolling 1.2 to 1.3 times the width of the titanium billet product; rotate the titanium billet after horizontal rolling by 90 degrees so that the longitudinal axis of the titanium billet is parallel to the axis of the press operating vehicle, and the operating vehicle of the forging press holds one end of the titanium billet for longitudinal Pull out and alternately carry out forging along the thickness direction and width direction of the titanium billet until the required thickness and width are obtained, that is, the continuous rolling titanium billet is obtained. By adopting the invention, continuous rolling titanium billet with width ≥ 1.5D can be produced to meet the requirement of continuous rolling titanium billet with width ≥ 1500mm; the product performance is good.

Description

technical field [0001] The invention belongs to a nonferrous metal forging method, and relates to a titanium ingot forging widening process, which is suitable for producing a continuous rolling titanium billet (width B) by forging a cylindrical titanium (including titanium and titanium alloy) ingot. [0002] The key point of the invention is that the titanium ingot (diameter D) is widened by transverse rolling, and a continuously rolled titanium billet with a width B≥1.5D can be obtained. Background technique [0003] With the development of technology, various industries have higher and higher requirements for the width of titanium coils, and now the required width has reached [0004] Above 1500mm. The width of the titanium coil is the same as that of the continuous rolling titanium billet, which requires the production of a continuous rolling titanium billet with a larger width. [0005] In the prior art, the production of continuous rolling titanium billets generally a...

AI Technical Summary

Problems solved by technology

At present, the diameter of titanium ingots produced in China is D≤1030mm, and only the width of titanium billets B≤1390mm can be obtained, which cannot meet the actual needs

And the edge of the continuous rolling billet with a width ≥ 1300mm produced by a titanium ingot with D=1030mm has loose and heavy quality problems. In fact, only when B≤1.25D can a continuous rolling titanium billet with better quality be obtained; because forging B When continuously rolling titanium billets ≥ 1.25D, due to the small amount of edge deformation and loose and other structural defects at the edge of the titanium billet, the flaw detection results are usually 1 to 2 grades lower than those in the middle of the titanium billet

When forging continuous rolling titanium billets, due to the small amount of edge deformation, the edges and corners of the edges are usually rounded, and the radius of the arc is ≥10mm. In the subsequent machining, it is not conducive to the removal of surface defects at the edges and corners.