Development and Application Practice of a 550MPa Grade Steel Plate in Purpose to Reduce Weight for Heavy Machinery Manufacture

Abstract:

To save energy, the heavy machinery industries are encountering the challenge of reducing the equipment weight. The paper introduced a 550 MPa grade steel plate to replace the traditional 345 MPa grade steel for heavy machinery manufacturing. The niobium and vanadium micro-alloyed steel plate is characterized as bainite microstructure with high toughness, improved welding performance, and good fatigue resistance. A comparison between the present 550 MPa grade steel plate and a Ni, Mo, Cu bainite steel was studied. The developed steel plate shows competitiveness for a high performance and low cost. The 15% of weight reduction is achieved in a 50 ton digger at a typical engineering machinery plant.

• Periodical: Materials Science Forum (Volumes 773-774)
• Pages: 518-524
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.773-774.518
• Online since: November 2013
• Authors: Shu E Hu*, Wei Hua Sun, Xiao Dong Liu, Dong Hua Hou, Rui Zhou, Feng Qiang Xia, Yu Zhen Liu, Guo Dong Wang
• Keywords: Energy Saving, Fatigue Property, Steel Plate, Welding

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