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Non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material for new energy automobile battery box

A technology for new energy vehicles and aluminum alloy materials, which is applied in the field of high-strength and high-toughness new energy battery box die-casting aluminum alloy materials and the preparation of battery boxes, can solve the problems of high manufacturing difficulty, inability to form at one time, and complex structure of battery boxes, etc. To achieve the effect of improving mechanical properties

Inactive Publication Date: 2022-01-21
苏州慧驰轻合金精密成型科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of production methods, the current large-scale battery box has a large projected area, and high-pressure casting is limited by the tonnage of the equipment, so it cannot be formed at one time. In terms of preparation, it also needs to be completed through new process methods

Method used

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  • Non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material for new energy automobile battery box
  • Non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material for new energy automobile battery box
  • Non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material for new energy automobile battery box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Two 1-ton crucible furnaces are used for simultaneous materialization. This alloy is a non-heat-treated high-toughness special die-casting aluminum alloy for battery boxes.

[0043] (1) The pure aluminum ingot A00 is used as the raw material of the Al element in the alloy for smelting, the pure magnesium ingot is used as the raw material of the Mg element in the alloy, the single crystal silicon 553# is used as the main element of He Si, and the Zn element is in the form of an aluminum ingot or Block pure zinc is added, Cu element is added as master alloy, Al-Mn master alloy is used as the raw material of Mn element in the alloy, and rare earth master alloy is used as the raw material of Ce and La elements in the alloy, nano-scale refiner Al-Ti- C-Sr master alloy is added, and each raw material is weighed according to the ratio of each element;

[0044] (2) Clean the raw materials, preheat each raw material after polishing the scale on the surface, and the preheating te...

Embodiment 2

[0063] Using the preparation method described in Example 1, the crucible furnace was fed with chemical materials at the same time to obtain two kinds of die-casting aluminum alloy liquids with different alloy compositions. The machine carries out high-pressure casting, samples are taken from the body of the die-casting, and the welding performance of two different materials is compared. A 1000W laser welding machine is used for welding, with a welding power of 750W, a welding spot diameter of 1mm, a welding speed of 20mm / s, and a defocus of 1.5 mm, argon flow rate 1.0L / min. Comparison of high strength and toughness die-casting aluminum alloys with rare earths Ce and La and no rare earths is shown in Table 2

[0064] Table 2

[0065]

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Abstract

The invention discloses a non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material for a new energy automobile battery box. The alloy material comprises 7wt%-9wt% of Si, 0.6wt%-1.0wt% of Mg, 0.2wt%-0.8wt% of Mn, smaller than 0.5% of Cu, smaller than 0.7wt% of Fe, smaller than 0.5.0wt% of Zn, smaller than 1wt% of La, smaller than 2wt% of Ce, smaller than 1wt% of Al-Ti-C-Sr and the balance Al, and the sum of the weight percentages of the rest of impurities is controlled to be 0.5wt% or below. The non-heat-treatment reinforced high-toughness pressure-casting aluminum alloy material is obtained by adopting a nanoscale refiner for auxiliary strengthening of rare earth elements, meanwhile, a double-charging-barrel integrated casting mode is introduced into the high-pressure cast new energy battery box, the casting filling time of the battery box in a mold can be shortened, the casting defects such as cold shut shrinkage porosity and the like are avoided, and the product yield is improved.

Description

technical field [0001] The invention relates to a non-heat treatment strengthened high-strength and tough die-casting aluminum alloy, in particular to a high-strength and high-toughness new energy battery box die-casting aluminum alloy material and a preparation method for the battery box. Background technique [0002] Energy shortage and environmental pollution have become prominent problems restricting the sustainable development of China's auto industry. No matter from the perspective of social or economic benefits, cars with low fuel consumption and low emissions are the needs of the development of an economical society. The development of new energy vehicles is the general trend. Meeting the above requirements will lead to an increase in the weight of the vehicle body. This is a spiral. The increase in the weight of the vehicle body will lead to a decrease in the cruising range. From the perspective of body weight reduction, it is necessary to make up for the impact cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/06B22D17/00B22D17/20B22D17/30
CPCC22C21/04C22C1/026C22C1/03B22D17/00B22D17/2015B22D17/30C22C1/06
Inventor 陈曦庞逸凡赵华
Owner 苏州慧驰轻合金精密成型科技有限公司
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