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Formula, smelting process and application of Al-Zn-Mg-Cu alloy

An al-10%mn, alloy technology, applied in the field of alloy materials, can solve problems such as splashing, casualties, equipment damage, etc., to achieve the effect of reducing weight, meeting safety requirements, and low density

Inactive Publication Date: 2013-08-14
HUNAN XINCAI ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the speed is too slow, the hard shell of liquid metal free crystallization is too thick and seriously consumes the vertical pressure acting on the molten metal, causing the casting to be "impermeable"; The liquid metal under high temperature and high pressure may also splash out from the gap between the indenter and the die wall, the die pad and the die, causing casualties or equipment damage

Method used

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  • Formula, smelting process and application of Al-Zn-Mg-Cu alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A formula of Al-Zn-Mg-Cu alloy, which is composed of Al, Zn, Mg, Cu, Mn, Cr, the total mass fraction of the above components is: Zn is 5.9%, Mg is 2.4%, Cu 1.8%, Mn 0.35%, Cr 0.22%, and the balance Al.

[0084] A smelting process of Al-Zn-Mg-Cu alloy, the raw materials used in the process are pure aluminum ingots, pure zinc ingots, pure magnesium ingots and intermediate alloys Al-20%Cu, Al-10%Mn and Al-5%Cr , the smelting process steps are as follows:

[0085] Step 1. Pretreatment of process raw materials: First, weigh 195kg of pure aluminum ingots, 15.5kg of pure zinc ingots, 6.8kg of pure magnesium ingots, and intermediate alloys Al-20%Cu23.5kg, Al-10%Mn9.5kg and Al-5% Cr11.5kg, remove the oil, mildew and scale on the surface of pure aluminum ingots, pure zinc ingots, pure magnesium ingots and intermediate alloys Al-20%Cu, Al-10%Mn and Al-5%Cr, and then Bake at temperature for 4 hours.

[0086] Step 2. Preliminary smelting: first add pure aluminum ingots to the gra...

Embodiment 2

[0094] A formula of Al-Zn-Mg-Cu alloy, which is composed of Al, Zn, Mg, Cu, Mn, Cr, the total mass fraction of the above components is: Zn is 5.6%, Mg is 2.2%, Cu is 1.6%, Mn is 0.25%, Cr is 0.18%, and the balance is Al.

[0095] A smelting process of Al-Zn-Mg-Cu alloy, the raw materials used in the process are pure aluminum ingots, pure zinc ingots, pure magnesium ingots and intermediate alloys Al-20%Cu, Al-10%Mn and Al-5%Cr , the smelting process steps are as follows:

[0096] Step 1. Pretreatment of process raw materials: First, weigh 205kg of pure aluminum ingots, 14.8kg of pure zinc ingots, 6kg of pure magnesium ingots, and intermediate alloys Al-20%Cu21kg, Al-10%Mn7kg and Al-5%Cr9.5kg, remove Oil stains, mildew and scale on the surface of pure aluminum ingots, pure zinc ingots, pure magnesium ingots and intermediate alloys Al-20%Cu, Al-10%Mn and Al-5%Cr, and then baked at a temperature of 300°C 3h.

[0097] Step 2. Preliminary smelting: first add pure aluminum ingots to...

Embodiment 3

[0105] A formula of Al-Zn-Mg-Cu alloy, which is composed of Al, Zn, Mg, Cu, Mn, Cr, the total mass fraction of the above components is: Zn is 5.8%, Mg is 2.3%, Cu 1.7%, Mn 0.30%, Cr 0.20%, and the balance Al.

[0106] A smelting process of Al-Zn-Mg-Cu alloy, the raw materials used in the process are pure aluminum ingots, pure zinc ingots, pure magnesium ingots and intermediate alloys Al-20%Cu, Al-10%Mn and Al-5%Cr , the smelting process steps are as follows:

[0107] Step 1. Pretreatment of process raw materials: First, weigh 200kg of pure aluminum ingots, 15.5kg of pure zinc ingots, 6.3kg of pure magnesium ingots, and intermediate alloys Al-20%Cu22.5kg, Al-10%Mn8kg and Al-5%Cr10. 8kg, to remove the oil, mildew and scale on the surface of pure aluminum ingots, pure zinc ingots, pure magnesium ingots and master alloys Al-20%Cu, Al-10%Mn and Al-5%Cr, and then at a temperature of 325°C Bake for 3.5 hours.

[0108] Step 2. Preliminary smelting: first add pure aluminum ingots to...

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Abstract

The invention discloses a formula, smelting process and application of an Al-Zn-Mg-Cu alloy, and in particular relates to a formula and a smelting process of the Al-Zn-Mg-Cu alloy, and an extrusion casting method for an Al-Zn-Mg-Cu alloy transmission hollow shaft for a high-speed locomotive. The formula includes the following components in percentage by weight: 5.6%-5.9% of Zn, 2.2%-2.4% of Mg, 1.6%-1.8% of Cu, 0.25%-0.35% of Mn, 0.18%-0.22% of Cr and the balance being Al. The smelting process comprises the following three steps of: pre-processing process materials; preliminarily smelting; and refining. The Al-Zn-Mg-Cu alloy is applied to manufacturing the transmission hollow shaft for the high-speed locomotive by adopting an extrusion casting process, so that the obtained casting piece product is compact and uniform in tissue, good in mechanical performances, capable of satisfying the high-quality high-performance requirements of the vehicle components. Besides, the mechanization and the braking are convenient to realize, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to the formula, melting process and application of an Al-Zn-Mg-Cu alloy. Background technique [0002] my country has a large population and a vast inland area. To solve the problem of large-scale population movement, the safest, fastest, most economical, most environmentally friendly and most reliable means of transportation is high-speed rail. In recent years, with the Beijing-Tianjin intercity railway, Wuhan-Guangzhou high-speed railway, Zhengxi-Xizhou high-speed railway, Shanghai-Nanjing intercity high-speed railway, etc. have been put into operation one after another, China's high-speed railway has entered the forefront of the world, and has created a record of operation speed, transportation capacity, energy saving and environmental protection. It is the world's first in terms of comfort and comfort, and is leading the development of high-speed rail in the world. [0003] With ...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03C22C1/06B22D18/02
Inventor 范才河陈锐朱月兵欧阳风茂欧阳毅
Owner HUNAN XINCAI ALLOY