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Semi-solid Process for Fabricating Aluminum Alloy Crankshafts of Air Conditioning Compressors Induced by Radial Forging Strain

An air-conditioning compressor, strain-induced technology, applied in engine components, mechanical equipment, metal processing equipment, etc., can solve the problem of inability to mass-produce large-sized semi-solid billets, large plastic deformation forming force, mechanical agitator Corrosion and other problems, to achieve the effects of good microstructure, reduced plastic forming force, and strong continuous production capacity

Inactive Publication Date: 2016-08-24
XI AN JIAOTONG UNIV
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Problems solved by technology

However, the conventional preparation methods have their own shortcomings: for the mechanical stirring method, the high temperature has a serious corrosion effect on the mechanical stirrer, resulting in impure slurry
However, when these methods prepare large blanks, the forming force required for large plastic deformation is too large, and it is difficult to realize with existing equipment.
Therefore, it is not possible to produce large-scale semi-solid billets in large quantities

Method used

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  • Semi-solid Process for Fabricating Aluminum Alloy Crankshafts of Air Conditioning Compressors Induced by Radial Forging Strain
  • Semi-solid Process for Fabricating Aluminum Alloy Crankshafts of Air Conditioning Compressors Induced by Radial Forging Strain

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Embodiment Construction

[0018] The present invention will be further described in detail below by taking an aluminum alloy rod of Φ60 mm as an example in conjunction with the accompanying drawings.

[0019] refer to figure 1 and figure 2 , a semi-solid process for preparing an aluminum alloy crankshaft of an air-conditioning compressor induced by radial forging strain, including the following steps:

[0020] 1) Preheat the aluminum alloy bar, heat the Φ60 aluminum alloy bar to 250-350°C with the furnace and keep it warm for 30-40 minutes to ensure that the entire billet is heated through;

[0021] 2) Radial forging of aluminum alloy rods, that is, the preheated aluminum alloy rods are clamped by the manipulator and fed in the axial direction. The radial forging machine distributes four hammers symmetrically around the blank, and carries out high-frequency high-frequency forging along the radial direction of the blank. Reciprocating forging makes the billet elongate and thinner under the condition ...

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Abstract

A radial forging strain-induced semi-solid state process for manufacturing an aluminum alloy crankshaft of an air condition compressor comprises the steps that an aluminum alloy bar material is preheated, radial forging is carried out on the aluminum alloy bar material, secondary remelting is carried out on a bank after radial forging, then semi-solid thixotropy forging of the aluminum alloy crankshaft is carried out, and subsequent processing of the aluminum alloy crankshaft is carried out. The uniform aluminum alloy semi-solid blank without mirodefects can be manufactured and the aluminum alloy crankshaft with fewer microstructure defects and good mechanical performance is formed and replaces a cast iron crankshaft through the process, the process is simple, and operation is easy.

Description

technical field [0001] The invention belongs to the technical field of metal semi-solid processing and forming, and in particular relates to a semi-solid process for preparing an aluminum alloy crankshaft of an air-conditioning compressor induced by radial forging strain. Background technique [0002] In recent years, lightweight has become a new hot spot in the industrial field. Lightweight specifically includes material lightweight, process lightweight and structural lightweight. The lightweight of materials mainly refers to the replacement of steel and copper with lightweight non-ferrous metals, such as aluminum alloys and magnesium alloys. For example, aluminum alloy has very good die-casting performance and processing performance, and the recycling efficiency is high, and the recycling process is pollution-free. [0003] The crankshaft is one of the important moving parts in the air-conditioning compressor. At present, the crankshaft of the air-conditioning compressor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/08B21J5/00B21J5/02
CPCB21J1/06B21J5/004B21J5/02B21K1/08
Inventor 赵升吨张晨阳王永飞韩晓兰李靖祥
Owner XI AN JIAOTONG UNIV
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