Titanium ingot forging and broadening process

Abstract

The invention discloses a titanium ingot forging and broadening process. The titanium ingot forging and broadening process is characterized by comprising the steps that a titanium ingot with a diameter D stands upright under a forging press, and forging downwards is carried out until the diameter of the upset titanium ingot is less than or equal to 1.2 D; the upset titanium ingot is placed flat ona lower anvil of the forging press, the axis in the lengthwise direction of the titanium ingot is enabled to be perpendicular to the axis of an operation vehicle of the press, the upset titanium ingot is rolled, and the width of a titanium blank is controlled to be 1.2 to 1.3 times the width of a final continuous rolled titanium blank product in actual production; and the horizontally rolled titanium blank is rotated by 90 degrees, so that the axis in the lengthwise direction of the titanium blank is parallel to the axis of the operation vehicle of the press, one end of the titanium blank isclamped by the operation vehicle of the forging press for longitudinal elongation, forging is alternately carried out in the thickness direction and the width direction of the titanium blank until therequired thickness and width are obtained, and thus the continuous rolled titanium blank is obtained. According to the titanium ingot forging and broadening process, the continuous rolled titanium blank with the width of more than or equal to 1.5 D can be produced to meet the requirement of the continuous rolled titanium blank with the width of more than or equal to 1500 mm, and the product is good in performance.

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. 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 [0002] 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 more than 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. [0003] In the prior art, the production of continuous rolling titanium billets generally adopts the follo...

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.