Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame

An in-situ composite material and cable bridge technology, which is applied in the direction of metal extrusion control equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of low strength and performance, and achieve the effect of improved comprehensive performance and simple process

Inactive Publication Date: 2009-04-29
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the low strength and performance of the current aluminum alloy bridge products, the invention adopts the integrated technology of melt reaction synthesis and semi-continuous casting under the electromagnetic field, and develops a submicron particle reinforced aluminum matrix composite material for cable bridges

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare 1000Kg of 6061 alloy and melt it in a gas reverberatory furnace. After the charge is completely melted, raise the temperature to 760°C, stir slowly and let stand for 15 minutes. Part of the 6061 alloy ingot was used to cool down to 740°C, powder sprayed and refined in the furnace for 10 minutes, and then stood still for 20 minutes. Add 20Kg of Al-10RE% master alloy, and add 80Kg of composite material reaction raw material ZrCO through the powder spraying device 3 , while spraying powder and adding pulsed electromagnetic field stirring, the average electromagnetic field strength is 0.2T; after spraying, let it stand for 12 minutes, and then add 2Kg of Al-Mg master alloy to adjust the chemical composition of the alloy. Add 1.5Kg of Al-5Ti-1B aluminum-titanium-boron wire for refining treatment, use double-stage foam ceramics to filter, and then carry out semi-continuous casting at 715 ° C. After the ingot is cooled, it is homogenized at 560°C for 6 hours, and then...

Embodiment 2

[0025] According to the composition requirements of the 6063 alloy, prepare 970Kg of pure aluminum ingot, 20Kg of Al-20wt% Si alloy, and 1Kg of electrolytic copper, and melt in a gas reverberatory furnace. Use part of the reserved aluminum ingots to cool down to 740°C, spray powder and refine in the furnace for 13 minutes, and then let it stand for 25 minutes. Add 50Kg composite material reaction raw material ZrCO through powder spraying device 3 , add high-frequency electromagnetic field stirring while powder spraying, the average electromagnetic field strength is 0.12T, stand still 10min after powder spraying finishes, then magnesium ingot 8Kg, Al-10wt%Zn master alloy 10Kg adjust alloy chemical composition. Add 2Kg of Al-5Ti-1B aluminum-titanium-boron wire for refining treatment, use double-stage foam ceramics to filter, and perform semi-continuous casting at 700 ° C. After the ingot is cooled, it is homogenized at 560°C for 6 hours, then forced air cooling to 250°C, and th...

Embodiment 3

[0027] According to the composition requirements of 6070 alloy, prepare 900Kg of pure aluminum ingot, 60Kg of Al-20wt% Si alloy, and 3Kg of electrolytic copper, and melt them in a gas reverberatory furnace. Part of the reserved aluminum ingots were cooled to 740°C, sprayed and refined in the furnace for 15 minutes, and then stood still for 30 minutes. Add 40Kg composite material reaction raw material ZrO powder through the powder spraying device, add high-frequency electromagnetic field stirring while spraying powder, the average electromagnetic field strength is 0.05T, let stand for 8min after spraying, then add Al-20wt% Mg master alloy 40Kg, pure zinc 2Kg to adjust the chemical composition of the alloy. Add 1.8Kg of Al-5Ti-1B aluminum titanium boron wire for refining treatment, and perform semi-continuous casting at 715°C. After the ingot is cooled, it is homogenized at 560°C for 6 hours, then rapidly cooled to 250°C with a strong airflow, the cooling rate is guaranteed to ...

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Abstract

The invention relates to a preparation technology of aluminum-matrix in-situ composites, in particular to a preparation method of light-weight high-strength aluminum-matrix in-situ composites used in cable testing bridges. The method includes the following specific steps: alloy is melted according to requirements of mixture ratios of components of aluminium alloy 6061, 6063 or 6070; mischmetal with the mass of 0.2 to 0.4 percent of that of the aluminium alloy is added and reaction materials of the composites are added through a dusting device for reaction synthesis of particle reinforced aluminum-matrix composites; chemical constituents are adjusted on grounds of demand; Al-5Ti-1B wires with the mass of 0.15 to 0.20 percent of that of the aluminium alloy are added for refining treatment and then semicontinuous casting; ingots are carried out homogenization treatment; and the testing bridges are obtained through the technologies of hot extrusion and hot treatment. The invention is simple and convenient in technology and controllable in constitution of the composites and the combination property of the bridges of the particle reinforced aluminum-matrix composites is obviously improved, thus meeting requirements of more high-standard construction.

Description

technical field [0001] The invention relates to the preparation technology of aluminum-based in-situ composite materials, in particular to a combination of melt reaction synthesis technology under electromagnetic field and semi-continuous casting molding technology to prepare submicron particle reinforced 6061, 6063 or 6070 aluminum alloy-based in-situ composite materials Material rods, and then undergo homogenization treatment, hot extrusion, heat treatment and other processes to produce high-grade aluminum-based composite materials for cable trays. Background technique [0002] Cable tray is an important supporting structural part in electrical engineering installation. my country's cable tray technology was introduced from abroad in the 1970s and 1980s and developed rapidly. The cable trays currently used generally adopt steel structures, but steel cable trays are easily corroded and have a short lifespan, requiring regular maintenance. In addition, a large number of cab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P17/00B22D11/00B22D11/18B21C23/04B21C31/00C22F1/04
Inventor 赵玉涛陈刚
Owner JIANGSU UNIV
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