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Zirconium and strontium compound micro-alloyed nickel-aluminum bronze and preparation method thereof

A nickel-aluminum bronze and micro-alloying technology, which is applied in the field of aluminum bronze alloy and its preparation, can solve problems such as restricting high-speed development, and achieve the effects of reduced friction coefficient, fine grain structure and high hardness

Active Publication Date: 2015-03-25
ZHENJIANG JINYE PROPELLER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, my country has not yet had a zirconium and strontium composite microalloyed nickel-aluminum bronze available for use in China, which to a certain extent restricts the use of propellers, seawater pumps, offshore oil platforms, and seawater pipelines in my country's offshore ships. The rapid development of systems, molds, and mechanical parts such as bearings, bushings, and turbines that work at high speeds, high pressures, and high temperatures

Method used

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  • Zirconium and strontium compound micro-alloyed nickel-aluminum bronze and preparation method thereof
  • Zirconium and strontium compound micro-alloyed nickel-aluminum bronze and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] Such as figure 1 shown.

[0022] A zirconium and strontium composite microalloyed nickel aluminum bronze, its preparation method:

[0023] Take 7.1206kg as an example.

[0024] First, 7 kg of self-made (see Comparative Example 1) or commercially available nickel-aluminum bronze (composition: 78.65Cu, 1.05Mn, 9.94Al, 5.8Fe, 4.54Ni, 0.64Zn, the numbers before all element symbols in the examples indicate mass percentage, the same below) After melting, add 35.4g Al-Sr master alloy (89.85%Al, 9.89%Sr (can also be selected between 8.901%~10.879%, the same below), 0.16%Fe, 0.10%Si) (Sr The loss rate is about 40%), 85.2g Al-Zr master alloy (95.69%Al, 4.11%Zr (can also be selected between 3.699% ~ 4.521%), 0.20%Fe, 0.10%Si ) (Zr loss rate is about 8%), the master alloy can be purchased directly from the market, or can be prepared by yourself by conventional methods. In the melting process, the former master alloy is melted and then added to the latter master alloy; after all ...

Embodiment 2

[0028] A zirconium and strontium composite microalloyed nickel aluminum bronze, its preparation method:

[0029] Take 7.1206kg as an example.

[0030] First, melt 7.005kg of nickel-aluminum bronze (composition: 78.96Cu, 1.09Mn, 9.94Al, 5.02Fe, 4.41Ni, 0.38Zn, the numbers before all element symbols in the examples represent mass percentages, the same below) and add them in sequence 30.4g Al-Sr master alloy (89.85%Al, 9.89%Sr, 0.16%Fe, 0.10%Si) (the loss rate of Sr is about 40%), 85.2g Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si ) (the loss rate of Zr is about 8%), described master alloy can be purchased directly from the market, also can adopt conventional method self-preparation, in the melting process, wait for the previous master alloy to melt and then Add the latter master alloy; after it is completely melted, add a slag removal agent (to remove impurities), and then pass high-purity nitrogen to refine for 3 minutes; finally, pour it into a ladle, keep it for 1...

Embodiment 3

[0033] A zirconium and strontium composite microalloyed nickel aluminum bronze, its preparation method:

[0034]Take 7.1206kg as an example.

[0035] First, 7.062kg of homemade (see Comparative Example 1) or commercially available nickel aluminum bronze (composition: 78.65Cu, 1.05Mn, 9.94Al, 5.8Fe, 4.54Ni, 0.64Zn, the numbers before all element symbols in the examples indicate Mass percentage, the same below) After melting, add 21.6g Al-Sr master alloy (89.85%Al, 9.89%Sr (can also be selected between 8.901%~10.879%, the same below), 0.16%Fe, 0.10%Si) ( The loss rate of Sr is about 40%), 37.66 Al-Zr master alloy (95.69%Al, 4.11%Zr (can also be selected between 3.699%~4.521%), 0.20%Fe, 0.10%Si ) (loss of Zr rate is about 8%), the master alloy can be purchased directly from the market, or can be prepared by yourself by conventional methods. In the melting process, the former master alloy is melted and then added to the latter master alloy; after all melting, Add slag agent (to ...

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Abstract

The invention relates to a zirconium and strontium compound micro-alloyed nickel-aluminum bronze and a preparation method thereof. The product is characterized by mainly comprising nickel-aluminum bronze, Zr (at the mass percent of 0.02-0.085%) and Sr (at the mass percent of 0.018-0.063%). The preparation process of the alloy is as follows: firstly, fusing the nickel-aluminum bronze, and then adding Al-Sr intermediate alloy and Al-Zr intermediate alloy; secondly, after completely fusing, adding a residue removing agent (for removing impurities), and introducing into high-purity nitrogen for refining; and lastly, pouring into a casting ladle, standing by, removing the residue and casting into an ingot, thereby obtaining the zirconium and strontium compound micro-alloyed nickel-aluminum bronze. Compared with the common nickel-aluminum bronze, the zirconium and strontium compound micro-alloyed nickel-aluminum bronze has the advantages that: the tissue is fine and small; the hardness and the corrosion resistance are increased; the friction coefficient is obviously reduced; and the nickel-aluminum bronze has wide application prospect in the fields of vessel propellers, sea water pumps, offshore oil platforms, seawater pipeline systems, mechanical moulds, bearings working under high speed, high pressure and high environment, lings, turbines, and the like.

Description

technical field [0001] The invention relates to an aluminum bronze alloy and a preparation method thereof, in particular to a novel nickel-aluminum bronze alloy and a preparation method thereof, in particular to a zirconium-strontium composite microalloyed nickel-aluminum bronze and a preparation method thereof. Background technique [0002] Nickel-aluminum bronze has excellent corrosion resistance and tribological properties, and is an important material for manufacturing ship propellers, pumps, valves, and underwater fasteners. With the development of industry, higher requirements are put forward for the performance of nickel aluminum bronze materials. [0003] As we all know, alloying and microalloying are effective means to improve the structure and properties of alloys. From the composition of nickel aluminum bronze (copper (Cu) 77~82%, manganese (Mn) 0.5~4.0%, aluminum (Al) 7.0~11.0%, iron (Fe) 2.0~6.0%, nickel (Ni) 3.0~6.0% %, zinc (Zn) ￡ 1.0%, and the balance is im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/01C22C1/03
Inventor 何峰明何峰林丁志红许晓静潘励陈树东王宏宇楚满军
Owner ZHENJIANG JINYE PROPELLER
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