Design and optimisation of die casting process for heavy-duty automatic transmission oil circuit board

ABSTRACT

In this study, HPDC is introduced into the production of oil circuit board, aiming to solve forming defects and provide a complete design concept for the exploitation of die-casting process in large castings. First, the die-casting die was designed and its rationality was verified, but the unreasonable selection of injection process parameters caused casting non-conformance. Next, the experimental data of L₂₅ orthogonal array of Taguchi method were used as training samples and the porosity of the die-cast part was examined in relation to casting variable parameters. Specifically, the velocity, temperature and injection pressure were mainly investigated, while the mathematical model passed the test of accuracy. Finally, Particle Swarm Optimisation (PSO) algorithm was used to optimise the model, achieving minimum porosity. The results have shown that the PSO algorithm optimisation results are better than the one produced by the Taguchi method, providing a significant improvement over the pre-optimisation results.

KEYWORDS:

• Oil circuit board
• die casting process
• PSO algorithm
• parameter optimisation

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51965011), Science and Technology Innovation Team Project in Guizhou Province (Grant No. Q.K.H.P.T.R.C[2020]5020), Key Research Project on Innovation Group of Guizhou Provincial Education Department (Grant No. Q.J.H. KY Z. [2018]011) and Training Plan for High-level Innovative Talent in Guizhou Province (Grant No. Q.K.H.P.T.R.C [2016]5659).

Disclosure statement

No potential conflict of interest was reported by the authors.