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Large-size and high-strength super hard hollow billet and manufacturing method thereof

A manufacturing method and large-scale technology, applied in the field of hollow round ingots and its manufacturing, can solve the problems of heavy production workload, difficult process control, low casting yield of aluminum alloy hollow ingots, etc., to improve strength, reduce influencing factors, The effect of improving plasticity

Active Publication Date: 2018-11-30
NORTHEAST LIGHT ALLOY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low casting yield, large production workload and difficult process control in the preparation of aluminum alloy hollow ingots in the prior art, and provide a large-scale, high-strength, superhard hollow round ingot and its manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] Embodiment 1: This embodiment is a large-scale high-strength superhard hollow round ingot composed of Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, B and Al; the large-scale high-strength superhard hollow The mass percentage of Si in the round ingot is less than 0.3%, the mass percentage of Fe is 0.2%-0.4%, the mass percentage of Cu is 1.4%-2.0%, the mass percentage of Mn is 0.2%-0.6%, and the mass percentage of Mg is 2.1% % to 2.9%, the mass percentage of Cr is 0.10% to 0.25%, the mass percentage of Zn is 5.0% to 7.0%, the mass percentage of Ti is less than 0.05%, the mass percentage of B is less than 0.05%, and the balance is Al.

[0025] Si is an impurity element, and the lower its content in actual production, the better.

specific Embodiment approach 2

[0026] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass percentage of Si in the described large-scale high-strength superhard hollow round ingot is less than 0.3%, the mass percentage of Fe is 0.3%, and the mass percentage of Cu is 1.5%, the mass percentage of Mn is 0.4%, the mass percentage of Mg is 2.5%, the mass percentage of Cr is 0.15%, the mass percentage of Zn is 6.0%, the mass percentage of Ti is less than 0.05%, and the mass percentage of B is less than 0.05% %, the balance is Al. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Specific embodiment three: This embodiment is a method for manufacturing a large-scale high-strength superhard hollow round ingot, which is completed according to the following steps:

[0028] 1. Weighing: According to the mass percentage of Si is less than 0.3%, the mass percentage of Fe is 0.2%-0.4%, the mass percentage of Cu is 1.4%-2.0%, the mass percentage of Mn is 0.2%-0.6%, and the mass percentage of Mg The percentage is 2.1%-2.9%, the mass percentage of Cr is 0.10%-0.25%, the mass percentage of Zn is 5.0%-7.0%, the mass percentage of Ti is less than 0.05%, the mass percentage of B is less than 0.05% and the balance is Al Weigh pure aluminum ingots, Al-Fe master alloys, pure copper plates, Al-Mn master alloys, pure magnesium ingots, Al-Cr master alloys, pure zinc ingots and Al-Ti-B wires; the pure aluminum ingots, Al - Fe master alloy, pure copper plate, Al-Mn master alloy, pure magnesium ingot, Al-Cr master alloy and pure zinc ingot as smelting raw material; the...

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Abstract

The invention relates to a hollow billet and a manufacturing method thereof, and especially relates to a large-size and high-strength super hard hollow billet and a manufacturing method thereof. The purpose of the invention is to solve the problems of low yield, large production workload and difficult process control of casting of aluminum alloy hollow ingots prepared in the prior art. The large-size and high-strength super hard hollow billet comprises Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, B and Al. The manufacturing method comprises the following steps: 1, weighing; 2, smelting; 3, refining and casting of melt; and 4, molding. The method is mainly used for manufacturing the large-size and high-strength super hard hollow billet.

Description

technical field [0001] The invention relates to a hollow round ingot and a manufacturing method thereof. Background technique [0002] High-strength super-hard aluminum alloy hollow ingot has the advantages of high alloying degree, low density and high specific strength. It is widely used in aerospace and high-speed train fields, and can replace steel materials in many occasions. Replacing the original steel structure with aluminum alloy not only ensures that the mechanical properties meet the requirements of aircraft and high-speed trains, but also greatly reduces its own weight. The existing aluminum alloy hollow ingots all use the traditional production method of water tank type aluminum crystallizer. The traditional production method requires extremely high operating skills of the operator, and the production labor intensity is high. There are many factors of ingot quality, resulting in a low forming rate of ingot, which is only 74.7%. Moreover, the metal segregation o...

Claims

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Application Information

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IPC IPC(8): C22C21/10B22D11/00C22B9/05C22C1/02C22C1/03
CPCB22D11/003C22B9/055C22C1/026C22C1/03C22C21/10
Inventor 刘义虎王国军高新宇李欣斌王英军孔祥生韩华刘学吴晓旭胥键秋王冬成于鸿硕邵天琪
Owner NORTHEAST LIGHT ALLOY CO LTD
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