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Aluminum alloy gear shifting hub casting defect control method

A technology for casting defects and control methods, which is applied to the control of pouring molten metal from a casting ladle, casting equipment, casting molding equipment, etc., can solve the problems of not considering the improvement of casting molds and the accuracy of the model without further verification, etc. Achieve the effect of improving casting quality and improving casting efficiency

Active Publication Date: 2020-04-10
UNIV OF SCI & TECH BEIJING +1
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  • Description
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  • Application Information

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Problems solved by technology

The analysis shows that the current research on the control method of casting defects mainly focuses on the reasonable design of the riser and the configuration of the cold iron, without considering whether the casting mold itself can be improved; in the process simulation, the accuracy of the model has not been further improved. verify

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  • Aluminum alloy gear shifting hub casting defect control method
  • Aluminum alloy gear shifting hub casting defect control method
  • Aluminum alloy gear shifting hub casting defect control method

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Embodiment Construction

[0045] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0046] The invention provides a method for controlling casting defects of an aluminum alloy shift hub.

[0047] Such as figure 1 As shown, the method includes the following steps:

[0048] S1: Use a thermal imager to detect the casting temperature during the actual casting mold opening process to obtain the casting temperature field;

[0049] S2: Defect detection is carried out on the actually cast aluminum alloy shift hub casting products, and the shrinkage cavity shrinkage casting defect formation area in the actual casting process is obtained;

[0050]S3: Carry out computer simulation analysis on the casting process, obtain the temperature field of the casting from the simulation, compare it with the actual test results of S1, and correct the heat t...

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Abstract

The invention provides an aluminum alloy gear shifting hub casting defect control method and belongs to the technical field of liquid metal forming. The aluminum alloy gear shifting hub casting defectcontrol method comprises the steps of detecting the casting temperature in the actual casting die opening process to obtain a casting temperature field; conducting defect detection on actually cast aluminum alloy gear shifting hub casting products to obtain shrinkage porosity casting defect forming areas in the actual casting process; establishing a casting process finite element simulation analysis model, simulating the gear shifting hub die filling and solidifying process through professional casting simulation software ProCAST, comparing the simulation result with an actual detection result and carrying out necessary correction on parameters; and conducting simulation analysis and optimization on technological parameters such as dies, casting temperatures, die preheating temperatures and casting speeds through the simulation model, and obtaining qualified castings with the aluminum alloy gear shifting hub casting shrinkage porosity casting defects improved effectively through trialcasting. Thus, the purposes of improving gear shifting hub casting defects and improving the casting quality are achieved.

Description

technical field [0001] The invention relates to the technical field of liquid metal forming, in particular to a method for controlling casting defects of an aluminum alloy shift hub. Background technique [0002] The shift hub is a key component of the dual clutch transmission, and its processing quality directly determines the efficiency and smoothness of the gear shift. Casting is the first process of shift hub molding, and the quality of the casting directly affects the subsequent machining accuracy and use process. lifespan. [0003] Alloying elements are added to AlSi12CuNiMg, which improves the mechanical properties of the workpiece but also reduces the casting properties of the alloy such as fluidity and thermal cracking resistance, making the castings prone to metal inclusions, insufficient pouring, shrinkage cavities, and shrinkage during the casting process. Defects such as looseness, cracks, deformation and pores. Therefore, the casting process design of complex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D37/00B22D2/00B22C9/28G06F30/23G06F119/18G06F119/08
CPCB22C9/28B22D2/006B22D37/00
Inventor 李洪波崔阳范海民王金钢孔宁张杰
Owner UNIV OF SCI & TECH BEIJING
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