Zinc-aluminum-titanium-carbon intermediate alloy refiner, preparation method thereof and use thereof

A master alloy and refining agent technology, applied in the field of metal materials, can solve problems such as pollution, prolonging the holding time, and environmental pollution, and achieve the effects of simple operation process, prolonging the holding time, and reducing production costs

Inactive Publication Date: 2009-12-02
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in refinement by means of salt, rare earth or aluminum-based master alloy refiner: the decomposition of salt in the zinc-aluminum melt brings other element pollution or inclusions (such as KF), which deteriorates the mechanical properties of the alloy ; Salts will corrode equipment during the smelting process, releasing toxic gases and smoke, which will cause deterioration of working conditions and environmental pollution; affected by production conditions and operating processes, when refined with salts and rare earths, zinc-aluminum alloys can The amount of effective refining elements absorbed is difficult to control, resulting in unpredictability of the refining effect; while the melting temperature of the aluminum-based master alloy refining a

Method used

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  • Zinc-aluminum-titanium-carbon intermediate alloy refiner, preparation method thereof and use thereof
  • Zinc-aluminum-titanium-carbon intermediate alloy refiner, preparation method thereof and use thereof
  • Zinc-aluminum-titanium-carbon intermediate alloy refiner, preparation method thereof and use thereof

Examples

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[0023] Example one

[0024] According to the following mass ratio ingredients: 47.2% pure zinc, 47.2% pure aluminum, 5% sponge titanium, 0.6% graphite powder; mix titanium sponge with graphite powder and divide into several portions, each with a weight of 0.1-2 kg and wrapped in aluminum foil , Standby; use the intermediate frequency induction furnace to melt the industrial pure aluminum to between 1000-1300 ℃, and then add all the inclusions of the titanium sponge and graphite powder mixture into the aluminum liquid in batches, and react for 5 minutes, then stop heating. After the above-mentioned melt temperature drops to about 920°C, pure zinc is added, and then heating is continued, and the temperature is controlled between 750-900°C. During the heating process, the electromagnetic stirring effect of the intermediate frequency induction electric furnace is used to make the components in the melt uniformly mixed, and then the melt is poured into the casting mold to obtain the zi...

Example Embodiment

[0026] Example two

[0027] The ingredients are prepared according to the following mass ratio: 71.6% pure zinc, 24% pure aluminum, 4% sponge titanium, 0.4% graphite powder; mix the sponge titanium with graphite powder and divide into several portions, each with a weight of 0.1-2 kg and wrapped in aluminum foil Fenyong; Use an intermediate frequency induction electric furnace to melt pure aluminum to 1200°C, add all the inclusions of Fenyong sponge titanium and graphite powder mixture to the aluminum liquid in batches, continue the reaction for 10 minutes, and stop heating. After the above-mentioned melt temperature drops to about 950°C, pure zinc is added, and heating is continued, and the temperature is controlled between 700-850°C. During the heating process, the electromagnetic stirring effect of the intermediate frequency induction electric furnace is used to mix the components in the melt uniformly, and then the melt is poured into the casting mold. After solidification, the...

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Abstract

The invention belongs to the field of metal materials, and particularly relates to a zinc-aluminum-titanium-carbon intermediate alloy refiner used for refining zinc-aluminum alloy grain tissues and a preparation method thereof. The invention adopts a technical proposal that the zinc-aluminum-titanium-carbon intermediate alloy refiner comprises the following four components by mass: 35 to 73 percent of zinc, 20 to 53 percent of aluminum, 1 to 16 percent of titanium and 0.1 to 3 percent of carbon. The invention also provides the preparation method for the zinc-aluminum-titanium-carbon intermediate alloy refiner and use, and has the advantages that: because the intermediate alloy refiner is the same as a matrix of zinc-aluminum alloy to be refined, the matrix components of the zinc-aluminum alloy to be refined are not changed, and the intermediate alloy refiner can be added at the normal melting temperature of the zinc-aluminum alloy to be refined and melted in short time; the low adding amount of the intermediate alloy refiner achieves the aim of efficient refining; therefore, the use is quite convenient, and the production cost of the zinc-aluminum alloy can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a zinc-aluminum-titanium-carbon master alloy refining agent for refining the grain structure of zinc-aluminum-aluminum alloy and a preparation method thereof. Background technique [0002] Zinc-aluminum alloy has excellent casting properties, mechanical properties and processing properties, and has broad market application prospects. However, due to the wide crystallization temperature range of zinc-aluminum alloys, coarse primary α-Al dendrites are easy to form, resulting in shrinkage cavities, shrinkage porosity, and intragranular component segregation defects, resulting in a decline in mechanical properties and potential aging risks of products . In order to overcome the above problems, it is necessary to add a grain refiner to the zinc-aluminum alloy in actual production to refine the grains. [0003] At present, grain refiners used in zinc-aluminum alloys contain...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C1/02C22C18/04C22C21/10C22C30/06
Inventor 王振卿韩昌旭陈亚明杨中喜耿浩然
Owner UNIV OF JINAN
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