High-strength flashover preventing aluminum alloy for electric power fittings and preparation method of high-strength flashover preventing aluminum alloy

A technology for power fittings and aluminum alloys is applied in the field of high-strength anti-flashover aluminum alloys for power fittings and their preparation, which can solve the problems of poor comprehensive strength and hardness and insufficient strength, and achieve good transition, high uniformity, and comprehensive stability. strong effect

Inactive Publication Date: 2019-04-02
段涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the aluminum alloy has strong plasticity and good machinability, but its overall strength and hardness are poor. The existing technology generally strengthens it through surface treatment, but its body still has the problem of insufficient strength. In order to ensure the stability of the overall quality, the extension The effective use time of the performance, adjusting the element content of the aluminum alloy body and adding the ratio of raw materials and auxiliary materials to obtain aluminum alloy materials with high performance and good mechanical strength is one of the key projects that need to be researched and improved at present.

Method used

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  • High-strength flashover preventing aluminum alloy for electric power fittings and preparation method of high-strength flashover preventing aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-strength anti-flashover aluminum alloy for electric fittings, comprising the following parts by weight: 60 parts of aluminum alloy ingot, 6 parts of nano-titanium dioxide powder, 3 parts of sepiolite fiber, 2.5 parts of acetylene carbon black, and 3 parts of nitride micropowder; It also includes 1 part of chrome ore, 2 parts of active zinc oxide, 1.5 parts of rare earth oxide and 0.12 part of foaming agent.

[0028] in:

[0029] Aluminum alloy ingots include the following elements in mass percentage: Mg 1.35-1.6%, Fe0.2-0.4%, Cu2.5-3.8%, B 0.03-0.08%, V 0.05-0.12%, Mn 0.03-0.05%, Cr 0.05-0.2%, Ge 0.3-0.4%, RE 0.01-0.15%, the balance is Al and unavoidable impurities. RE is a composition of Ce, Sc, Sm, and Y, and the mass of Ce+Sc accounts for more than 60% of the total mass of RE.

[0030] Nitride fine powder includes boron nitride, silicon nitride, and magnesium nitride, and the mass ratio of the three is 0.5:3:2.

[0031] Rare earth oxides are selected from a...

Embodiment 2

[0042] A high-strength anti-flashover aluminum alloy for electric power fittings, comprising the following parts by weight: 70 parts of aluminum alloy ingot, 6 parts of nano-titanium dioxide powder, 4 parts of sepiolite fiber, 3 parts of acetylene carbon black, and 3 parts of nitride micropowder; It also includes 2 parts of chrome ore, 3 parts of active zinc oxide, 1 part of rare earth oxide and 0.2 part of foaming agent.

[0043] in:

[0044] Aluminum alloy ingots include the following mass percentage elements: Mg 1.35-1.6%, Fe 0.2-0.4%, Cu2.5-3.8%, B 0.03-0.08%, V 0.05-0.12%, Mn 0.03-0.05%, Cr 0.05-0.2%, Ge 0.3-0.4%, RE 0.01-0.15%, the balance is Al and unavoidable impurities. RE is a composition of Ce, Sc, Sm, and Y, and the mass of Ce+Sc accounts for more than 60% of the total mass of RE.

[0045] Nitride fine powder includes boron nitride, silicon nitride, and magnesium nitride, and the mass ratio of the three is 1:4:2.

[0046] The rare earth oxide is selected from an...

Embodiment 3

[0057] A high-strength anti-flashover aluminum alloy for electric power fittings, comprising the following parts by weight: 70 parts of aluminum alloy ingot, 4 parts of nano-titanium dioxide powder, 3 parts of sepiolite fiber, 2.5 parts of acetylene carbon black, and 1 part of nitride micropowder; It also includes 1 part of chrome ore, 1 part of active zinc oxide, 2.5 parts of rare earth oxide and 0.1 part of foaming agent.

[0058] in:

[0059] Aluminum alloy ingots include the following mass percentage elements: Mg 1.35-1.6%, Fe 0.2-0.4%, Cu2.5-3.8%, B 0.03-0.08%, V 0.05-0.12%, Mn 0.03-0.05%, Cr 0.05-0.2%, Ge 0.3-0.4%, RE 0.01-0.15%, the balance is Al and unavoidable impurities. RE is a composition of Ce, Sc, Sm, and Y, and the mass of Ce+Sc accounts for more than 60% of the total mass of RE.

[0060] Nitride fine powder includes boron nitride, silicon nitride, and magnesium nitride, and the mass ratio of the three is 0.5:3:1.

[0061] The rare earth oxide is selected fro...

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Abstract

The invention provides a high-strength flashover preventing aluminum alloy for electric power fittings and a preparation method of the high-strength flashover preventing aluminum alloy. The high-strength flashover preventing aluminum alloy is prepared from the following compositions in parts by weight: 50-70 parts of aluminum alloy ingots, 4-6 parts of nano-titanium dioxide, 2-4 parts of sepiolitefibers, 2.5-3 parts of acetylene carbon black, 1-4 parts of nitride micro powder, and further comprises 0-2 parts of chromium ore, 0-3 parts of activated zinc oxide, 0-3 pars of rare earth oxide, and0.05-0.2 part of a foaming agent. According to the high-strength flashover preventing aluminum alloy for the electric power fittings and the preparation method of the high-strength flashover preventing aluminum alloy, the microstructure of the aluminum alloy is reasonably optimized through reasonable raw material selection and process improvement; by doping and combining with additional ingredients, excellent mechanical performance and flashover preventing performance are achieved, weather resistance, corrosion resistance and the like are also significantly improved, and comprehensive performance is improved remarkably.

Description

technical field [0001] The invention relates to the technical field of electric power fitting alloy materials and its preparation, in particular to a high-strength anti-flashover aluminum alloy for electric power fittings and a preparation method thereof. Background technique [0002] Aluminum is the most abundant metal in the earth's crust. In the total mass of the earth's crust, aluminum accounts for about 8%, iron about 5%, and copper about 0.0001%. Its rich resource content and excellent performance make it widely used in industry For example, aluminum alloy is the most widely used non-ferrous metal structural material in the industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. Some aluminum alloys can be heat treated Obtain good mechanical properties, physical properties and corrosion resistance. [0003] Power fittings are metal accessories that connect and combine various devices in the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/06C22C49/14C22C47/08C22F1/04C22F1/02C22C101/06
CPCC22C49/06C22C47/08C22C49/14C22F1/02C22F1/04
Inventor 段涛
Owner 段涛
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