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Method for improving titanium alloy swaging forged structure homogeneity

A technology of uniform structure and titanium alloy, applied in the field of material processing, can solve the problems of insufficient broken as-cast structure, uneven structure of finished forgings, uneven deformation of crosses, etc., to improve the degree of process stability, good structure uniformity, Evenly organized effect

Active Publication Date: 2014-01-22
西安秦钛智造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elongation process is the most basic process of free forging of titanium alloys. The single-direction elongation forging deformation is easy to cause cross uneven deformation, and the as-cast structure is not sufficiently broken and has heredity, which makes it difficult to solve the problem of structure inhomogeneity in the finished forging.

Method used

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  • Method for improving titanium alloy swaging forged structure homogeneity
  • Method for improving titanium alloy swaging forged structure homogeneity
  • Method for improving titanium alloy swaging forged structure homogeneity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1. Upsetting deformation: Upsetting deformation is carried out along the axial direction of the ingot, and the deformation amount is about 30%. After the upsetting deformation, the material size is Φ380mm×400mm, and a drum shape appears on the side;

[0032] Step 2. Elongation deformation: Overturn the ingot deformed by upsetting in step 1 at 90°, compress it by about 20% in the axial direction, turn it over 90°, continue to compress it by about 20%, turn it over 90° again, and compress it by about 20% %, so repeatedly commutated to a titanium alloy with a square cross-section with a size of 250mm×250mm×670mm.

[0033] The H / D (height-to-diameter ratio) of the titanium alloy with a square cross section prepared in this example is ≤3. At this time, the upsetting deformation can be continued according to the actual needs, and the elongation deformation can also be continued until the finished forging.

Embodiment 2

[0036] Step 1, such as figure 1 As shown, the titanium alloy 1 with a square cross section obtained in Example 1 is placed on the operating platform 2, so that the length direction of the titanium alloy 1 with a square cross section is parallel to the axial direction of the upper flat anvil 3, and along the four The diagonal direction of the square cross-section is overall flattening the titanium alloy 1 with a square cross-section to obtain a titanium alloy with a hexagonal cross-section; the reduction of the overall flattening is 30%;

[0037] Step 2, turning the titanium alloy with a hexagonal cross-section described in step 1 by 90° and then performing overall flattening to obtain a titanium alloy with an octagonal cross-section; the reduction of the overall flattening is 30%;

[0038] Step 3. Repeat step 2 for the titanium alloy having an octagonal cross-section described in step 2 until a titanium alloy forging with a square cross-section and a size of 250mm×250mm×670mm ...

Embodiment 3

[0041] Step 1, such as figure 1 As shown, the titanium alloy 1 with a square cross section obtained in Example 1 is placed on the operating platform 2, so that the length direction of the titanium alloy 1 with a square cross section is parallel to the axial direction of the upper flat anvil 3, and along the four The diagonal direction of the square section will have the titanium alloy 1 with a square section to be overall flattened to obtain a titanium alloy with a hexagonal section; the reduction of the overall flattening is 40%;

[0042] Step 2, turning over the titanium alloy with a hexagonal cross-section described in step 1 by 90° and then performing overall flattening to obtain a titanium alloy with an octagonal cross-section; the reduction of the overall flattening is 40%;

[0043] Step 3. Repeat step 2 for the titanium alloy having an octagonal cross-section described in step 2 until a titanium alloy forging with a square cross-section and a size of 250mm×250mm×670mm i...

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Abstract

The invention discloses a method for improving the titanium alloy swaging forged structure homogeneity. The method includes the steps of (1) placing titanium alloy which is obtained through conventional upsetting swaging forging and provided with the square cross section on an operating platform, enabling the length direction of the titanium alloy with the square cross section to be parallel to the axial direction of an upper flat anvil, overall flattening the titanium alloy with the square cross section in the diagonal direction of the square cross section, and obtaining titanium alloy with the hexagon cross section, (2) turning over the titanium alloy with the hexagon cross section by 90 degrees to carry out overall flattening, and obtaining titanium alloy with the octagon cross section, and (3) repeating the step (2) on the titanium alloy with the octagon cross section until a titanium alloy forge piece with the square cross section and the size same as the size of the titanium alloy with the square cross section is obtained. According to the method, large plastic deformation is carried out on the cross section of a material in different directions, the cross inhomogeneous deformation caused by swaging deformation in a single direction is improved, and therefore the aim that structures of various portions of the forge piece are homogeneous is achieved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a method for improving the uniformity of a titanium alloy elongated forging structure. Background technique [0002] Limited by the physical properties of titanium alloys and smelting technology, forging is still the most widely used and effective method in titanium alloy processing. This method can not only directly forge into the required shape of the workpiece, but also optimize the microstructure and eliminate as-cast porosity. defects and improve the mechanical properties of the material. [0003] For forgings, the more uniform the deformation, the smaller the local deformation difference, and the more uniform the structure, so the deformation uniformity of forgings is an important indicator to measure the quality of forgings. The better the deformation uniformity of the forging, the more uniform the deformation of each part will be, which is conduci...

Claims

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Application Information

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IPC IPC(8): B21J5/06
Inventor 周伟葛鹏赵永庆吴欢
Owner 西安秦钛智造科技有限公司
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