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A kind of preparation method of copper-silver-zirconium alloy large-size forging cake blank

A zirconium alloy, large-scale technology, applied in the field of special metal materials and processes, to achieve the effect of eliminating defects, improving strength and reducing pores

Active Publication Date: 2016-05-18
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the lack of technical process for producing large-scale high-strength copper-silver-zirconium alloy ingot blanks in China, the present invention proposes a method for preparing copper-silver-zirconium alloy large-size forging cake blanks, which breaks through the thrust and service life of heavy-duty transport engines in terms of materials technical bottleneck

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  • A kind of preparation method of copper-silver-zirconium alloy large-size forging cake blank

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Experimental program
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Effect test

Embodiment 1

[0024] The composition of the copper-silver-zirconium alloy of the present invention is Cu-3Ag-0.5Zr, that is, the mass percentage of Ag is 3%, the mass percentage of Zr is 0.5%, and the rest is Cu.

[0025] Taking the Ф540×38mm copper-silver-zirconium alloy ingot as an example, the preparation steps are as follows:

[0026] (1) Ingot melting

[0027] Put the Cu-Zr alloy and elemental Ag prepared according to the ratio into the induction vacuum furnace respectively, and vacuum until the vacuum degree is lower than 10 -5 , start heating, and the temperature rises to 1270°C; after the alloy is completely melted, stir once every 30 minutes, after stirring for a total of 4 times, let stand for about 30 minutes; after standing, filter and pour the melt, and then cool to room temperature;

[0028] (2) Homogenization heat treatment

[0029] Put the ingot obtained in step (1) into a heating furnace for homogenization heat treatment. The heat treatment adopts a two-stage homogenizati...

Embodiment 2

[0043] The composition of the copper-silver-zirconium alloy of the present invention is 2.8% by mass of Ag, 0.4% by mass of Zr, and the rest is Cu.

[0044] Taking the Ф450×30mm copper-silver-zirconium alloy ingot as an example, the preparation steps are as follows:

[0045] (1) Ingot melting

[0046]Put the Cu-Zr alloy and elemental Ag prepared according to the ratio into the induction vacuum furnace respectively, and vacuum until the vacuum degree is lower than 10 -5 , start heating, and the temperature rises to 1240 ° C; after the alloy is completely melted, stir once every 20 minutes, after stirring for a total of 3 times, let stand for about 25 minutes; after standing, filter and pour the melt, and then cool to room temperature;

[0047] (2) Homogenization heat treatment

[0048] Put the ingot obtained in step (1) into a heating furnace for homogenization heat treatment. The heat treatment adopts a two-stage homogenization system. Specifically, it is first kept at 930°C...

Embodiment 3

[0059] The composition of the copper-silver-zirconium alloy of the present invention is 3.2% by mass of Ag, 0.5% by mass of Zr, and the rest is Cu.

[0060] Taking the copper-silver-zirconium alloy ingot of Ф600×45mm as an example, the preparation steps are as follows:

[0061] (1) Ingot melting

[0062] Put the Cu-Zr alloy and elemental Ag prepared according to the ratio into the induction vacuum furnace respectively, and vacuum until the vacuum degree is lower than 10 -5 , start heating, and the temperature rises to 1300°C; after the alloy is completely melted, stir once every 40 minutes, after stirring for a total of 5 times, let stand for about 35 minutes; after standing, filter and pour the melt, and then cool to room temperature;

[0063] (2) Homogenization heat treatment

[0064] Put the ingot obtained in step (1) into a heating furnace for homogenization heat treatment. The heat treatment adopts a two-stage homogenization system. Specifically, it is first kept at 950...

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Abstract

The invention relates to the field of special metal materials, and particularly relates to a preparation method of a copper-silver-zirconium alloy large-size forged biscuit. The preparation method comprises the following steps: (1) respectively placing a Cu-Zr alloy and a simple substance Ag in a vacuum induction furnace, carrying out vacuum pumping and heating, and filtering and casting the melt after the alloy is completely melted; (2) placing a cast ingot into a heating furnace to carry out homogenizing heat treatment, wherein a twin-stage homogenizing system is used in the heat treatment; (3) repeatedly carrying out upsetting and swaging deformation for four times; and (4) carrying out quenching and ageing treatment. The preparation method of the copper-silver-zirconium alloy large-size forged biscuit can be applied to heavy carrying and components such as an aircraft and the like can be repeatedly used for manufacturing, so that a fatal technical support function is achieved in the prolonging of service life of engine thrust chamber and the enhancement of engine thrust.

Description

technical field [0001] The invention belongs to the field of special metal materials and techniques, and in particular relates to a method for preparing a high-strength copper-silver-zirconium alloy forged cake blank, which is used for preparing structural components for large-scale transport engines. Background technique [0002] With the increasing demand for thrust of liquid engines for heavy-duty vehicles, engines with high thrust ratios put forward higher requirements for materials. It is one of the main development trends at present to choose copper-silver-zirconium alloy with high strength, high heat resistance and high fatigue life instead of copper-zirconium alloy as the inner wall material of engine thrust chamber. In addition, due to the increase in launch and material preparation costs, copper-silver-zirconium alloys with higher fatigue life also have broad application prospects in the field of reusable aircraft. [0003] When the engine is working, the copper a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22F1/08B21J5/06B21J5/08
Inventor 韩修柱张绪虎阴中炜何仕桓任秀峰
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH