Preparation method of tantalum 2.5 tungsten alloy plate

A tungsten alloy and sheet technology, applied in the field of preparation of tantalum 2.5 tungsten alloy sheet, can solve the problems of uneven structure of tantalum tungsten alloy sheet, mechanical properties cannot meet actual requirements, increase production cost, etc. The effect of fine particle size and reduction of raw material cost

Active Publication Date: 2018-05-04
ZHUZHOU HARD ALLOY GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Using this method, it is necessary to configure a heating furnace. The surface of the tantalum-tungsten alloy ingot will be oxidized after heating, and the oxide layer must be removed after processing, which increases the production cost and the process is cumbersome. Larger particles, poorer mechanical properties
CN 103243285A discloses a tantalum-tungsten material and a preparation method thereof. In the first forging process

Method used

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  • Preparation method of tantalum 2.5 tungsten alloy plate
  • Preparation method of tantalum 2.5 tungsten alloy plate
  • Preparation method of tantalum 2.5 tungsten alloy plate

Examples

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[0029] Example 1

[0030] A kind of preparation method of tantalum 2.5 tungsten alloy plate of the present invention comprises the following steps:

[0031] (1) The tantalum 2.5 tungsten alloy ingot smelted by electron beam twice has a diameter of 130 mm and a length of 150 mm. The composition of each element of the tantalum 2.5 tungsten alloy ingot is shown in Table 1:

[0032] Table 1 Composition of Tantalum 2.5 Tungsten Alloy Ingot

[0033]

[0034] (2) Peel off the tantalum 2.5 tungsten alloy ingot obtained in step (1), remove the surface casting layer, the surface of the tantalum 2.5 tungsten alloy light ingot after lathing is smooth and free of holes, and then carry out phase matching on the tantalum 2.5 tungsten alloy light ingot Controlled array ultrasonic flaw detection to ensure that there are no internal defects in the tantalum 2.5 tungsten alloy ingot;

[0035] (3) Cold forging the tantalum 2.5 tungsten alloy light ingot obtained in step (2), the forging equip...

Example Embodiment

[0043] Example 2

[0044] A kind of preparation method of tantalum 2.5 tungsten alloy plate of the present invention comprises the following steps:

[0045] (1) The diameter of the tantalum 2.5 tungsten alloy ingot melted twice by electron beam is 130 mm, and the length is 150 mm. The composition of each element of the tantalum 2.5 tungsten alloy ingot is shown in Table 1;

[0046] (2) Peel off the tantalum 2.5 tungsten alloy ingot obtained in step (1), remove the surface casting layer, the surface of the tantalum 2.5 tungsten alloy light ingot after lathing is smooth and free of holes, and then carry out phase matching on the tantalum 2.5 tungsten alloy light ingot Controlled array ultrasonic flaw detection to ensure that there are no internal defects in the tantalum 2.5 tungsten alloy ingot;

[0047] (3) Cold forging the tantalum 2.5 tungsten alloy light ingot obtained in step (2), the forging equipment used is a screw press, the cold forging process first adopts upsetting,...

Example Embodiment

[0055] Example 3

[0056] A kind of preparation method of tantalum 2.5 tungsten alloy plate of the present invention comprises the following steps:

[0057] (1) The diameter of the tantalum 2.5 tungsten alloy ingot melted twice by electron beam is 130 mm, and the length is 150 mm. The composition of each element of the tantalum 2.5 tungsten alloy ingot is shown in Table 1;

[0058] (2) Peel off the tantalum 2.5 tungsten alloy ingot obtained in step (1), remove the surface casting layer, the surface of the tantalum 2.5 tungsten alloy light ingot after lathing is smooth and free of holes, and then carry out phase matching on the tantalum 2.5 tungsten alloy light ingot Controlled array ultrasonic flaw detection to ensure that there are no internal defects in the tantalum 2.5 tungsten alloy ingot;

[0059] (3) Cold forging the tantalum 2.5 tungsten alloy light ingot obtained in step (2), the forging equipment used is a screw press, the cold forging process first adopts upsetting,...

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Abstract

The invention discloses a preparation method of a tantalum 2.5 tungsten alloy plate. The preparation method comprises the following steps: (1) a tantalum 2.5 tungsten alloy ingot is cold forged, and is annealed in vacuum to obtain a forged thick plate blank; and (2) the forged thick plate blank is cold rolled by 1-N times (N not smaller than 1) to obtain a rolled plate blank; and the vacuum annealing is performed after each time of cold rolling to finally obtain a tantalum 2.5 tungsten alloy finished plate. The cold forging process is adopted to prevent oxidation in the heating process of thetantalum 2.5 tungsten alloy ingot; the process is simplified; the raw material cost and the machining cost are effectively reduced; the tantalum 2.5 tungsten alloy plate obtained by multiple times ofvacuum annealing and multiple times of rolling is fine in grain; the average grain size is not more than 35 microns; and the mechanical performances of Vickers hardness, tensile strength, yield strength, ductility and the like are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a preparation method of a tantalum 2.5 tungsten alloy plate. Background technique [0002] The tantalum-tungsten binary alloy formed by adding a certain amount of tungsten to tantalum has both the corrosion resistance of tantalum and the good high-temperature strength of tungsten. This alloy has the advantages of high temperature resistance, high strength, good fracture toughness and corrosion resistance, and has been widely used in aviation, aerospace, chemical industry, nuclear industry, high temperature technology and other fields. [0003] Due to the high deformation resistance of tantalum and tungsten ingots, in order to prevent cracking during forging, the existing production process of tantalum and tungsten alloys is to warm forge tantalum and tungsten ingots or even hot forge or extrude billets above 1200 ° C, and then carry out Heat treatm...

Claims

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Application Information

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IPC IPC(8): B21C37/02C22F1/18C22F1/02
CPCB21C37/02C22F1/02C22F1/18
Inventor 刘辉江贺文亮
Owner ZHUZHOU HARD ALLOY GRP CO LTD
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