Method for optimizing grain size and uniformity of tantalum plate
A technology of grain size and uniformity, applied in the field of optimizing the grain size and uniformity of tantalum plates, can solve the problems of uneven distribution of plastic deformation, low total processing rate of medium and thick plate rolling, coarse grains, etc., to avoid problems such as Defects of insufficient grain breakage, the effect of improving the degree of grain breakage and improving the uniformity of the structure
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[0041]Example 1
[0042]Such asfigure 1 As shown, a method for optimizing the grain size and uniformity of a tantalum sheet of this embodiment includes the following steps:
[0043]Step 1. At room temperature, use a fast forging machine with a forging ratio of 1.0 to flatten an electron beam smelted tantalum ingot with a circular cross-sectional shape and a circular diameter of 220 mm to obtain a size of 137×274×L1A tantalum billet with a rectangular cross section in mm; the length of the rectangle is 274mm and the width is 137mm; the tantalum ingot is a tantalum ingot that has been melted by electron beam at least twice, and the aspect ratio of the tantalum ingot is ≥1.2 The forging ratio of 1.0 means that the cross-sectional area remains unchanged before and after forging, that is, the cross-sectional area of the tantalum blank with a rectangular cross-sectional shape is equal to the cross-sectional area of the tantalum ingot with a circular cross-sectional shape; the room temperatu...
Example Embodiment
[0052]Example 2
[0053]Such asfigure 1 As shown, a method for optimizing the grain size and uniformity of a tantalum sheet of this embodiment includes the following steps:
[0054]Step 1. At room temperature, use a fast forging machine with a forging ratio of 1.0 to flatten an electron beam smelted tantalum ingot with a circular cross-sectional shape and a circular diameter of 240 mm to obtain a size of 150×300×L1A tantalum blank with a rectangular cross-section in mm; the length of the rectangle is 300mm and the width is 150mm; the tantalum ingot is a tantalum ingot that has been melted by electron beam at least twice, and the aspect ratio of the tantalum ingot is ≥1.2 The forging ratio of 1.0 means that the cross-sectional area remains unchanged before and after forging, that is, the cross-sectional area of the tantalum blank with a rectangular cross-sectional shape is equal to the cross-sectional area of the tantalum ingot with a circular cross-sectional shape; the room temperatur...
Example Embodiment
[0063]Example 3
[0064]Such asfigure 1 As shown, a method for optimizing the grain size and uniformity of a tantalum sheet of this embodiment includes the following steps:
[0065]Step 1. At room temperature, use a fast forging machine with a forging ratio of 1.0 to flatten an electron beam smelted tantalum ingot with a circular cross-sectional shape and a circular diameter of 280mm to obtain a size of 175×350×L1A tantalum blank with a rectangular cross section in mm; the length of the rectangle is 350mm and the width is 175mm; the tantalum ingot is a tantalum ingot that has been melted by electron beam at least twice, and the aspect ratio of the tantalum ingot is ≥1.2 The forging ratio of 1.0 means that the cross-sectional area remains unchanged before and after forging, that is, the cross-sectional area of the tantalum blank with a rectangular cross-sectional shape is equal to the cross-sectional area of the tantalum ingot with a circular cross-sectional shape; the room temperature...
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