An aluminum alloy integrated electric drive assembly mounting frame and its low-pressure casting method

A mounting frame and low-pressure casting technology, which is applied in the field of aluminum alloy casting, can solve problems such as the inability to meet the preparation requirements of the mounting frame of the integrated electric drive assembly, insufficient mechanical performance indicators, and the total weight of parts, and achieve small dimensional tolerances and surface The effect of small roughness and improved tensile strength

Active Publication Date: 2021-11-23
东风汽车零部件集团有限公司通用铸锻分公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above materials need to use RE materials, the cost is high, and the mechanical performance indicators of the above materials are insufficient, which cannot meet the preparation needs of the integrated electric drive assembly mounting frame
[0005] The parts that need to be carried on the electric drive assembly installation frame are important parts of the drive system of new energy vehicles. The frame is fixed on the body through three suspensions. Working conditions, to determine the yield strength of the frame needs to be greater than 235Mpa, the product adopts stamped and welded parts in the early stage, which has shortcomings such as self-heavy, many processes, long manufacturing cycle and high price

Method used

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  • An aluminum alloy integrated electric drive assembly mounting frame and its low-pressure casting method
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  • An aluminum alloy integrated electric drive assembly mounting frame and its low-pressure casting method

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Embodiment 1

[0035] The invention provides an aluminum alloy integrated electric drive assembly mounting frame, the aluminum alloy material used includes the following components by weight percentage: Si: 8.4%, Cu: 1.4%, Mg: 0.65%, Mn: 0.55%, Ti: 0.20%, Fe≤0.2%, Zn≤0.15%, and the rest is Al.

[0036] The low-pressure casting method of the above aluminum alloy material is:

[0037]A. Smelting, refining and refinement of aluminum alloy materials: Put the raw materials into the gas melting furnace according to the above-mentioned composition ratio, heat and melt, and when the temperature of the aluminum alloy liquid rises to 760°C, transfer it to the preheated transfer ladle After adjusting the alloy liquid temperature to 720°C, add AlSr10 modifier and AlTi5B1 refiner, and pass in argon gas for refining and degassing treatment. The refining and degassing treatment time is 9min, and the gas flow rate is 19LPM. After refining, the slag is removed. The aluminum alloy solution is left to stand a...

Embodiment 2

[0043] The invention provides an aluminum alloy integrated electric drive assembly mounting frame, the aluminum alloy material used includes the following components by weight percentage: Si: 9.2%, Cu: 1%, Mg: 0.55%, Mn: 0.45%, Ti: 0.18%, Fe≤0.2%, Zn≤0.15%, and the rest is Al.

[0044] The low-pressure casting method of the above aluminum alloy material is:

[0045] A. Smelting, refining and refinement of aluminum alloy materials: Put the raw materials into the gas melting furnace according to the above-mentioned component distribution ratio, heat and melt, and when the temperature of the aluminum alloy liquid rises to 765°C, transfer it to the preheated transfer ladle After adjusting the alloy liquid temperature to 725°C, add AlSr10 modifier and AlTi5B1 refiner, and pass in argon gas for refining and degassing treatment. The refining and degassing treatment time is 10min, and the gas flow rate is 19LPM. After refining, remove slag and take samples Detection of aluminum sampl...

Embodiment 3

[0051] The invention provides an aluminum alloy integrated electric drive assembly mounting frame, the aluminum alloy material used includes the following components by weight percentage: Si: 8.3%, Cu: 0.8%, Mg: 0.35%, Mn: 0.25%, Ti: 0.13%, Fe≤0.2%, Zn≤0.15%, and the rest is Al.

[0052] The low-pressure casting method of the above aluminum alloy material is:

[0053] A. Smelting, refining and refinement of aluminum alloy materials: Put the raw materials into the gas melting furnace according to the above-mentioned component distribution ratio, heat and melt, and when the temperature of the aluminum alloy liquid rises to 770°C, transfer it to the preheated transfer ladle After adjusting the alloy liquid temperature to 730°C, add AlSr10 modifier and AlTi5B1 refiner, and pass in argon gas for refining and degassing treatment. The refining and degassing treatment time is 10min, and the gas flow rate is 20LPM. After refining, remove slag and take samples Detection of aluminum sam...

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Abstract

The invention discloses an aluminum alloy integrated electric drive assembly mounting frame and a low-pressure casting method thereof. The aluminum alloy material used includes the following components by weight percentage: Si 8.3-9.7%, Cu 0.8-1.5%, Mg 0.25 ‑0.65%, Mn 0.15‑0.55%, Ti 0.10‑0.20%, Fe≤0.2%, Zn≤0.15%, and the rest is Al. The low-pressure casting method comprises the following steps: A. smelting and refining aluminum alloy materials; B. mold preparation; C. low-pressure casting; D. heat-treating and machining the obtained castings. The aluminum alloy material of the present invention does not require the addition of rare earth elements RE and is low-pressure cast through metal casting molds, so that the tensile strength of the castings of the present invention is greater than 335 MPa, the yield strength is greater than 305 MPa, the elongation is greater than 2.5%, the hardness is greater than HB118, and the mechanical properties are excellent. .

Description

technical field [0001] The invention relates to aluminum alloy casting, in particular to an aluminum alloy integrated electric drive assembly mounting frame and a low-pressure casting method thereof. Background technique [0002] Under the pressure of energy crisis, environmental pollution and the intensification of the global warming effect, auto parts urgently need to be developed in the direction of lightweight. Aluminum alloy is currently the most widely used lightweight material in automotive materials. Aluminum alloy materials for automobiles mainly include cast aluminum alloys and deformed aluminum alloys. Cast aluminum alloys are mainly used in engines, casings and chassis components, and are the main form of aluminum alloys for automobiles. [0003] Most of the load-bearing bracket assemblies are produced by punching and welding high-strength steel plates. The bracket assembly produced by the stamping and welding method has a large number of parts and needs to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/04C22C1/02C22C1/06B22D18/04C22F1/043B60K1/00
CPCB22D18/04B60K1/00C22C1/026C22C1/06C22C21/04C22F1/043
Inventor 吴云波王泽忠甘大梅胡磊魏啟金黄未华何胜元周力刘之顺
Owner 东风汽车零部件集团有限公司通用铸锻分公司
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