A Control Method for Casting Defects of Aluminum Alloy Shift Hub

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...

AI Technical Summary

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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