Preparation method for copper-based multi-element high-temperature difficult-to-deform alloy wire for engine

A multi-element alloy and hard-to-deform technology is applied in the field of preparation of copper-based multi-element high-temperature hard-to-deform alloy wires for engines, and achieves the effects of good fluidity, breaking through the bottleneck of preparation technology, and high brazing temperature.

Active Publication Date: 2020-12-25
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In this method, the refining melt obtained by the vacuum induction melting method is cast in a long thin-walled tube to obtain a copper-based multi-component alloy composite bar, and then combined with extrusion forging, and the corresponding composite preparation process of heat treatment and cold processing, the copper-based multi-component high temperature The composition of the hard-to-deform alloy wire is well controlled, which effectively solves the problems of forging cracks and inclusions caused by rolling processing, making it suitable for engines

Method used

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  • Preparation method for copper-based multi-element high-temperature difficult-to-deform alloy wire for engine

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Embodiment 1

[0028] This embodiment includes the following steps:

[0029] Step 1. Prepare the raw materials of each component according to the following mass percentages: Ni 10.0%, Mn 15.0%, Ag 5.0%, Si 0.4%, B 0.1%, and the balance is Cu; the raw material of B is NiB master alloy , the raw materials of other components are metal simple substances; the Mn simple substance raw materials are coated with Ag;

[0030] Step 2. Put the elemental metal and NiB intermediate alloy in the raw materials of each component prepared in step 1 into the magnesia crucible of the vacuum induction melting furnace, and put the simple substance of Mn coated with Ag prepared in step 1 into the vacuum induction melting furnace. In the top hopper of the melting furnace, the vacuum induction melting furnace is then vacuumed to a vacuum degree of 10 -3 Heating at MPa to make the raw materials in the magnesia crucible completely melted, adding the Ag-coated Mn elemental raw material from the top hopper into the ma...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1. Prepare the raw materials of each component according to the following mass percentages: Ni 11.0%, Mn 17.0%, Ag 6.0%, Si 0.8%, B 0.2%, and the balance is Cu; the raw material of B is NiB master alloy , the raw materials of other components are metal simple substances; the Mn simple substance raw materials are coated with Ag;

[0037] Step 2. Put the elemental metal and NiB intermediate alloy in the raw materials of each component prepared in step 1 into the magnesia crucible of the vacuum induction melting furnace, and put the simple substance of Mn coated with Ag prepared in step 1 into the vacuum induction melting furnace. In the top hopper of the melting furnace, the vacuum induction melting furnace is then vacuumed to a vacuum degree of 10 -2 Heating the temperature at MPa to completely melt the raw materials in the magnesia crucible, adding the Ag-coated Mn elemental raw material from the top hopper in...

Embodiment 3

[0042] This embodiment includes the following steps:

[0043] Step 1. Prepare the raw materials of each component according to the following mass percentages: Ni 10.5%, Mn 16.0%, Ag 5.5%, Si 0.6%, B 0.15%, and the balance is Cu; the raw material of B is NiB master alloy , the raw materials of other components are metal simple substances; the Mn simple substance raw materials are coated with Ag;

[0044] Step 2. Put the elemental metal and NiB intermediate alloy in the raw materials of each component prepared in step 1 into the magnesia crucible of the vacuum induction melting furnace, and put the simple substance of Mn coated with Ag prepared in step 1 into the vacuum induction melting furnace. In the top hopper of the melting furnace, the vacuum induction melting furnace is then vacuumed to a vacuum degree of 10 -2 Heating the temperature at MPa to completely melt the raw materials in the magnesia crucible, adding the Ag-coated Mn elemental raw material from the top hopper i...

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Abstract

The invention discloses a preparation method for a copper-based multi-element high-temperature difficult-to-deform alloy wire for an engine. The method comprises the following steps: 1. preparing rawmaterials; 2. performing vacuum induction melting on a metal simple substance and a NiB intermediate alloy in the raw materials until the metal simple substance and the NiB intermediate alloy are completely melted, then adding an Ag-coated Mn simple substance raw material for refining, and casting to obtain a copper-based multi-element alloy composite bar; 3. extruding or rotary swaging; 4. precision forging; and 5. annealing and then drawing a precision forging to obtain the copper-based multi-element high-temperature difficult-to-deform alloy wire. Refined melt obtained by a vacuum inductionmelting method is cast by adopting a long thin-walled tube to obtain a copper-based multi-element alloy composite bar; and then, in combination with extrusion forging and corresponding composite preparation process of heat treatment and cold machining, the components in the copper-based multi-element high-temperature difficult-to-deform alloy wire are well controlled, so that the problems of forging cracks, inclusions and the like caused by rolling processing are effectively solved, and the technical bottleneck of preparation of the copper-based multi-element high-temperature difficult-to-deform alloy wire is broken through.

Description

technical field [0001] The invention belongs to the technical field of wire material preparation, and in particular relates to a method for preparing a copper-based multi-component high-temperature refractory alloy wire material for an engine. Background technique [0002] In recent years, with the development of aerospace technology, the high-temperature performance requirements of superalloy solders for sealing key parts of engines are getting higher and higher. Traditional aviation copper-nickel (CuNiSiFeB) alloys and silver-copper-zinc (AgCuZnCd) alloys are difficult to meet the requirements. The preparation method of silver-containing copper-based multi-element high-temperature refractory alloys has attracted the attention of various countries. [0003] Copper, nickel, silver, manganese, silicon, and boron alloys have good fluidity and wettability and are used in primary brazing of key components of aerospace engines. Carry out related research work. Due to technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/05C22C1/03C22F1/02C22F1/08B21C37/04
CPCB21C37/047C22C1/03C22C9/05C22F1/02C22F1/08
Inventor 王虹贾志华
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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