Remanufacturing of nodular cast iron crankshaft with plasma cladding

Abstract

Remanufacturing technology has a wide range of applications in the repair of scrapped parts with a certain remaining service life. In this work, a scrapped crankshaft fabricated from nodular cast iron that had failed from working surface wear was remanufactured via a plasma cladding process. Taking into account the wear amount on the working surface and the characteristics of nodular cast iron, in this article, cladding layer parameters were designed and two types cladding powders, Fe-based and Ni-based, were prepared, respectively, to perform the cladding experiment. After examining different process parameters, relatively smooth cladding layers were obtained using four powders. The cladding experiment results showed that the powder No. 3 exhibited superior qualities when combined with proper processing parameters. When applying powder No. 3 to the main journal of crankshaft, a higher quality of cladding layer was achieved.

Fabrication of TiC-Reinforced Surface Layers on Ductile Cast Iron Substrate by Laser Surface Alloying

“…However, in some applications, there is a need to increase the durability of machine parts made of the DCIs by improving their surface wear properties. As a consequence, much emphasis has been early and currently placed on the improvement of wear performances of the working surface of machine parts made of the DCIs [6][7][8][9][10][11][12][13]. Considerable research has been devoted to laser surface modification methods, such as laser surface melting (LSM), alloying (LSA) and cladding (LSC) processes [14][15][16][17][18][19][20][21][22][23][24].…”

Effect of CeO2 on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

“…27 This was also the common disadvantage of all rapid prototyping manufacturing technology, once the stress in the coating could not release, it would lead to cracks. 28 At the same time, while the fluidity of the molten pool was poor, the impurities and gases in the molten pool were hard to be discharged during the coating forming process, which lead to the formation of holes. Figure 4 illustrates the cross-section of the Ni60A coating.…”

A Scientometric Analysis of Remanufacturing by Mapping Scientific, Organizational, and National Concentration Zones

“…For example, by using surface engineering techniques, approximately 62% of waste parts in old engines can be repaired, and the quality of remanufactured engines become superior to the original products. The applications of advanced surface engineering techniques in engine remanufacturing have enhanced the availability of waste products, reduced the remanufacturing costs, and made valuable contributions to materials, energy-saving and environment protection (Xing et al, 2004) Laser cladding and surface manufacturing are the key approaches, whereby materials such as iron and steel are remanufactured to fix coating and surface wear in different products such as crankshaft and rail surface (Li et al, 2018;Liu et al, 2018). Researchers have focused on such techniques, as the remanufacturing process requires materials and products to be returned to a like-new condition, and these researchers are attempting to improve the surface manufacturing process with regards to the application of different materials or nanoscale applications.…”