A study of automobile brake bracket formed by casting–forging integrated forming technology. (15th February 2015)

• Record Type: Journal Article
• Authors: Zhou, H.T.; Xu, S.X.; Li, W.D.; Wang, S.C.; Peng, Y.
• Is Part Of: Materials & design. Volume 67(2015:Mar.)
• Page Start: 285
• Page End: 292
• Publication Date: 2015-02-15
• Subjects: Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2014.11.046
• Languages: English
• ISSNs: 0264-1275

Abstract

Highlights: An A356 alloy automobile brake bracket is fabricated by a new technology. Good appearance and structure were obtained by casting at 998 K and 66 mm/s. Good properties were obtained by forging at 270 MPa and start-up time of 3 s. The T6 heat treatment resulted in a superior property of the bracket. Abstract: An automobile brake bracket is fabricated by casting–forging integrated forming technology. It is shown that molten pouring speed, forging start-up time, forging pressure and heat treatment strongly affect the structure and properties of A356 aluminum casting and forging parts. Furthermore, high-speed filling results in shrinkage pores and cracks and low-speed filling leads to incomplete filling. Excellent appearance, macrostructure and comprehensive mechanical properties are obtained at pouring temperature 725 °C, filling speed 66 mm/s, forging start-up time 3 s and forging pressure 270 MPa. After heat treatment, the hardness, tensile strength and elongation to fracture are 58HRB, 335 MPa, 18.4% respectively.