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Metal additive for aluminum alloy smelting and using method thereof

A metal additive and aluminum alloy technology, which is applied in the field of aluminum and aluminum alloy production, can solve the problems of low yield rate, large burning loss of metal elements, uneven metal composition of aluminum alloy, etc.

Active Publication Date: 2016-08-24
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Our country began to use it in large quantities in the early 1990s, but in the actual application process of the above-mentioned iron, manganese, silicon, chromium, copper, and titanium agents, the addition temperature is generally around 800°C, the energy consumption is high, and the metal elements Large burning loss, low yield rate, only 90% to 92%, and uneven metal composition of aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] manganese additive

[0023] Proportion: metal manganese powder: 80%, titanium hydride powder: 1%, aluminum powder 4%, potassium fluoroaluminate 15%. The purity of manganese powder is 99.5%, the particle size is 80 mesh, and the purity of aluminum powder is greater than 95%.

[0024] Process: Mix the powder after batching, and then press into a specific mold.

[0025] How to use: When the temperature of the metal aluminum liquid reaches 680°C, add the pressed manganese additive into the aluminum liquid, let it rest for 5 minutes, then raise the temperature to 740°C, and then let it rest for 15 minutes. The actual yield of manganese is 99.6%.

Embodiment 2

[0027] Titanium Additives

[0028] Proportion: metal titanium powder: 80%, titanium hydride powder: 0.5%, aluminum powder 2%, potassium fluoroaluminate 13.5%. The purity of titanium powder is 99.7%, the particle size is 80 mesh, and the purity of aluminum powder is greater than 95%.

[0029] Process: Mix the powder after batching, and then press into a specific mold.

[0030] How to use: When the temperature of the metal aluminum liquid reaches 670°C, add the pressed titanium additive into the aluminum liquid, let it stand still for 5 minutes, then raise the temperature to 730°C, and then stand still for 20 minutes. The actual yield of titanium is 99.4%.

Embodiment 3

[0032] iron additive

[0033] Ratio: metal iron powder: 75%, titanium hydride powder: 1.5%, aluminum powder 6%, potassium fluoroaluminate 13.5%. The purity of iron powder is 99.3%, the particle size is 80 mesh, and the purity of aluminum powder is more than 95%.

[0034] Process: Mix the powder after batching, and then press into a specific mold.

[0035] How to use: When the temperature of the metal aluminum liquid reaches 700°C, add the pressed iron additive into the aluminum liquid, let it rest for 5 minutes, then raise the temperature to 750°C, and let it stand for another 19 minutes. The actual yield of iron is 99.5%.

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Abstract

The invention discloses a metal additive for aluminum alloy smelting and a using method thereof. 1.0-1.5% of -325-mesh titanium hydride powder is added into the metal additive; experiments find that when the metal additive is added under a condition that temperature of smelted aluminum is 680-700 DEG C, the titanium hydride powder occurs decomposition reaction similar to little explosion in the smelted aluminum, metal elements are uniformly dispersed in the smelted aluminum, and segregation of metal components of aluminum alloy is eliminated completely; a lot of heat is released during decomposition reaction, local temperature of the smelted aluminum is increased, and smelting of the metal elements is facilitated; adding temperature is low, energy consumption is low, burning up of the metal elements is reduced, and actual yield is increased; temperature of the smelted aluminum is increased to 730-750 DEG C, and alloying reaction rate is increased.

Description

technical field [0001] The invention belongs to the technical field of aluminum and aluminum alloy production, and in particular relates to a metal additive for aluminum alloy smelting and a use method. Background technique [0002] During the smelting process of aluminum and aluminum alloys, it is necessary to add titanium, copper, manganese, iron and other metals to adjust the composition of aluminum alloys. In the past, the methods of adding the above metal elements are: [0003] 1. Directly add titanium, copper, manganese, iron and other pure metal blocks, but because the melting point of these metals is much higher than the temperature of the molten aluminum, the melting speed is slow at the temperature of the molten aluminum, and it needs to be operated under high temperature conditions. [0004] 2. Add aluminum-titanium, aluminum-copper, aluminum-manganese, aluminum-iron and other intermediate alloys. The melting point of these master alloys is close to the temperatu...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/00
CPCC22C1/026C22C21/00
Inventor 尚青亮刘捷胥福顺包崇军张玮陈劲戈
Owner KUNMING METALLURGY INST
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