Preparing method for lightning prevention and ablation resisting alloy

A kind of ablation resistance and alloy technology, applied in electrical components, spark gaps, spark gap parts and other directions, can solve the problems of reduced service life, poor resistance to arc ablation, easy to burn, etc., to achieve high resistance to ablation , the effect of high strength and broad application prospects

Inactive Publication Date: 2017-06-27
宁波高新区远创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the traditional materials for making lightning protection gaps have poor arc ablation resistance, and are easily burned when arcs burn, which reduces their service life, a graphite expansion, After oxidation treatment, microbes are used to increase the active sites inside the expanded graphite, and then the rare earth metals are deposited in situ, and then the graphite filled with rare earth metals is formed on the surface of the alloy by polydopamine to form a graphite film to prepare lightning protection The method of the ablation-resistant alloy, the present invention first crushes and sieves metals such as nickel and tungsten to obtain mixed powder, and then processes graphite to obtain expanded graphite, which has excellent lightning protection and arc ablation resistance, and then After its oxidation, the active sites are introduced into the interior through the action of microorganisms, and then the rare earth metals resistant to arc ablation are introduced into the interior through in-situ deposition, and then the alloy powder is pressed into a billet, and the expanded graphite is wrapped in the polydopamine. On the outside of the alloy, a lightning-proof and arc-resistant film is formed to protect the alloy after being pressed, thereby obtaining a lightning-proof and ablation-resistant alloy. burnout, which prolongs its service life and has broad application prospects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First weigh 300g of nickel, 60g of tungsten, 400g of copper, 100g of molybdenum and 40g of titanium diboride and add them to the pulverizer for crushing, pass through a 100-mesh sieve, collect the sieved material, and obtain a mixed powder for later use; then weigh 2kg of graphite and add it to the Pulverize in a pulverizer, pass through a 100-mesh sieve, collect the sieved powder, take 600g of the sieved powder and add it to a beaker filled with 2L of 30% hydrogen peroxide, place the beaker in a water bath, and control the temperature of the water bath to 80°C. Soak in heat preservation for 90 minutes, filter, collect the filter residue, put the filter residue in a microwave oven, and heat the graphite at 800W for 5 minutes to expand the graphite to obtain expanded graphite. Put the expanded graphite into a pulverizer and pulverize it, and pass through a 100-mesh sieve to obtain expanded graphite. powder; take 500g of the above-mentioned expanded graphite powder, 15g of...

example 2

[0021] First weigh 200g of nickel, 50g of tungsten, 300g of copper, 80g of molybdenum and 30g of titanium diboride and add them to the pulverizer for pulverization, pass through an 80-mesh sieve, collect the sieved material, and obtain a mixed powder for later use; then weigh 1kg of graphite and add it to the Pulverize in a pulverizer, pass through a 80-mesh sieve, collect the sieved powder, take 500g of the sieved powder and add it to a beaker filled with 1L of 30% hydrogen peroxide, place the beaker in a water bath, and control the temperature of the water bath to 70°C. Soak in heat preservation for 60 minutes, filter, collect the filter residue, put the filter residue in a microwave oven, and heat the graphite at 800W for 3 minutes to expand the graphite to obtain expanded graphite. Put the expanded graphite into a pulverizer to pulverize it, and pass through a 80-mesh sieve to obtain expanded graphite. powder; take 400g of the above-mentioned expanded graphite, 10g peach gu...

example 3

[0024] First, weigh 250g nickel, 55g tungsten, 350g copper, 90g molybdenum and 35g titanium diboride and add them to the pulverizer for pulverization, pass through a 90-mesh sieve, collect the sieved material, and obtain a mixed powder for later use; then weigh 1kg of graphite and add it to the Pulverize in a pulverizer, pass through a 90-mesh sieve, collect the sieved powder, take 550g of the sieved powder and add it to a beaker filled with 2L of 30% hydrogen peroxide, place the beaker in a water bath, and control the temperature of the water bath to 75°C. Soak in heat preservation for 80 minutes, filter, collect the filter residue, put the filter residue in a microwave oven, and heat the graphite at 800W for 4 minutes to expand the graphite to obtain expanded graphite. Put the expanded graphite into a pulverizer to pulverize it, and pass through a 90-mesh sieve to obtain expanded graphite. powder; take 450g of the above-mentioned expanded graphite powder, 12g of peach gum and...

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PUM

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Abstract

The invention relates to a preparing method for a lightning prevention and ablation resisting alloy and belongs to the technical field of preparing of alloys. The preparing method includes the steps that firstly, nickel, tungsten and other metal are smashed and screened, and mixed powder is obtained; then, graphite is treated, and expanded graphite is obtained, wherein the graphite has good lightning prevention and arc ablation resistance properties; after the graphite is oxidized, active sites are led into the graphite through the microbial action, and then rare earth metal resistant to arc ablation is led into the graphite through in-situ deposition; and then alloy powder is pressed into a blank, the expansion graphite is wrapped at the outer portion of the alloy through the polydopamine action, a lightning prevention and arc ablation resisting film is formed after pressing to protect the alloy, and therefore the lightning prevention and ablation resisting alloy is obtained. The prepared lightning prevention and ablation resisting alloy has the relatively high arc ablation resisting capability and is not likely to be burnt out during arc combustion, the service life of the alloy is prolonged, and a wide application prospect is achieved.

Description

technical field [0001] The invention relates to a method for preparing a lightning protection and ablation resistant alloy, belonging to the technical field of alloy preparation. Background technique [0002] Overhead transmission lines are mostly located in remote areas, and are prone to lightning flashover and pollution flashover, threatening the safety of the power system. arc angle), when the overhead line is struck by lightning, a high lightning overvoltage is generated on the insulator string, but because the lightning impulse discharge voltage of the protection gap is lower than the discharge voltage of the insulator string, the protection gap discharges first, and the subsequent power frequency arc is Under the action of electromotive force and thermal stress, the discharge channel formed by the parallel gap is drawn to the end of the arc angle and fixed at the end of the arc angle to burn, thereby protecting the insulator string from arc burning, and then protecting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C32/00C22C1/05C22C1/10H01B17/46H01T1/24
CPCC22C30/02C22C1/05C22C32/0073H01B17/46H01T1/24
Inventor 何迎春薛洋王维
Owner 宁波高新区远创科技有限公司
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