Tantalum-tungsten material and preparation method thereof

An ingot casting and pickling technology, applied in the field of metal materials, can solve the problems of large grain size, poor plate homogeneity, uneven grain size, etc.

Active Publication Date: 2013-08-14
NINGXIA ORIENT TANTALUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology is mainly based on flat forging and rolling in the longitudinal and vertical directions. This process has the following

Method used

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  • Tantalum-tungsten material and preparation method thereof
  • Tantalum-tungsten material and preparation method thereof
  • Tantalum-tungsten material and preparation method thereof

Examples

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Example Embodiment

[0024] The embodiment of the invention discloses a preparation method of a tantalum tungsten material, which includes the following steps:

[0025] 1) Perform the first forging of the tantalum-tungsten ingot, and the first heat treatment of the tantalum-tungsten ingot after the first forging;

[0026] 2) Perform a second forging of the tantalum-tungsten ingot obtained in step 1), and perform a second heat treatment on the tantalum-tungsten material after the second forging;

[0027] 3) Roll the tantalum-tungsten ingot obtained in step 2), and subject the rolled tantalum-tungsten ingot to a third heat treatment to obtain a tantalum-tungsten material.

[0028] According to the present invention, in the process of preparing the tantalum-tungsten material, it is first necessary to provide a tantalum-tungsten ingot. The preparation of the tantalum-tungsten ingot can be obtained by electron beam melting. The invention has no particular limitation on the preparation of the tantalum-tungsten i...

Example Embodiment

[0040] Example 1

[0041] 1) Tantalum 2.5 tungsten ingot is obtained by electron beam melting. The diameter of tantalum 2.5 tungsten ingot is 153mm and the length is 250~260mm. The composition of tantalum 2.5 tungsten ingot is shown in Table 1. Table 1 is tantalum 2.5 tungsten ingot The element composition data table;

[0042] Table 1 Elemental composition data table of tantalum 2.5 tungsten ingot

[0043]

[0044] 2) Ultrasonic detection of the tantalum 2.5 tungsten ingot obtained in step 1), and then heat the tantalum 2.5 tungsten ingot to 400°C, hold for 150 minutes, and perform axial upsetting, with an upsetting ratio of 1.6; then perform radial drawing, Obtain a tantalum 2.5 tungsten rod with a diameter of 100mm and a length of 450mm;

[0045] 3) Obtain the tantalum 2.5 tungsten rod in step 2) and divide it into 2 sections in the length direction. Take one section and remove the forging defects on the end face;

[0046] 4) Pickling the tantalum 2.5 tungsten rod obtained in step 3...

Example Embodiment

[0056] Example 2

[0057] 1) The tantalum 2.5 tungsten ingot is obtained by electron beam melting. The diameter of the tantalum 2.5 tungsten ingot is 155mm and the length is 242mm. The composition of the tantalum 2.5 tungsten ingot is shown in Table 2. Table 2 shows the elements of the tantalum 2.5 tungsten ingot Ingredient data sheet;

[0058] Table 2 Elemental composition data table of tantalum 2.5 tungsten ingot

[0059]

[0060] 2) Ultrasonic detection of the tantalum 2.5 tungsten ingot obtained in step 1), and then heat the tantalum 2.5 tungsten ingot to 500°C, hold for 150 minutes, and perform axial upsetting, with an upsetting ratio of 2.0; then perform radial drawing, Obtain a tantalum 2.5 tungsten rod with a diameter of 100mm and a length of 443mm;

[0061] 3) Obtain the tantalum 2.5 tungsten rod in step 2) and divide it into 2 sections in the length direction. Take one section and remove the forging defects on the end face;

[0062] 4) Pickling the tantalum 2.5 tungsten rod ...

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Abstract

The invention provides a preparation method of a tantalum-tungsten material. The preparation method comprises the following steps of: (1) carrying out forging on a tantalum-tungsten ingot for the first time, and carrying out heat treatment on the tantalum-tungsten ingot subjected to the first-time forging for the first time; (2) carrying out forging on the tantalum-tungsten ingot obtained in the step (1) for the second time, and carrying out heat treatment on the tantalum-tungsten ingot subjected to the second-time forging for the second time; and (3) rolling the tantalum-tungsten ingot obtained in the step (2), and carrying out heat treatment on the tantalum-tungsten ingot subjected to rolling for the third time to obtain the tantalum-tungsten material. In the process of preparing the tantalum-tungsten material, two times of forging is carried out to ensure that internal crystalline gains of the ingot are fully crushed so as to obtain uniform internal organizations, and then rolling is carried out so as to ensure that the ingot is uniformly deformed in each direction, so that the material surely has uniform mechanical properties and microstructures in each direction. The invention also provides the tantalum-tungsten material prepared by the preparation method.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a tantalum-tungsten material and a preparation method thereof Background technique [0002] The Explosively Formed Penetrator (EFP) warhead is a penetrator with high center-of-mass velocity and structural shape that is forged by using the principle of shaped charge to crush and deform the metal liner by the shaped-energy explosive bombardment of explosives. . Therefore, the material used for the warhead liner must have good dynamic ductility and tensile strength in order to form an EFP warhead with a certain length-to-diameter ratio. [0003] At present, the metal materials suitable for making the EFP warhead liner cover mainly include: copper, pure iron, tantalum, tantalum alloy, niobium and silver, etc., among which the density of copper is 8.96g / cm 3 , the density of tantalum is 16.6g / cm 3 , 1.86 times that of copper. The use of high-density materials to make medic...

Claims

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Application Information

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IPC IPC(8): C22F1/18C22C27/02
Inventor 张亚军汪凯李积贤李桂鹏李瑞莲任晓
Owner NINGXIA ORIENT TANTALUM IND
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