Wang H.,Casting Branch of CIMC Huajun Vehicle Co. |
Pan C.-G.,Casting Branch of CIMC Huajun Vehicle Co. |
Wan H.-T.,Casting Branch of CIMC Huajun Vehicle Co. |
Yu Y.-M.,Casting Branch of CIMC Huajun Vehicle Co. |
Song S.-L.,Casting Branch of CIMC Huajun Vehicle Co.
Zhuzao/Foundry | Year: 2011
Folding box hinge is one of the key components in folding box, and has been produced by welding the steel plate. This method is of low utilization ratio of materials, more working steps and high cost. To improve production efficiency and reduce cost, casting method is adopted. According to the working conditions of hinge, and by referring to the chemical compositions of the welded structural steel, a kind of steel with lower contents of precious metal Cr, Mo, Cu and oil was developed. The performance of the steel can meet the requirements of the hinge after quenching at 870°C and tempering at 580°C. It has good welding performance and better ductility, and the yield strength is higher than 390 MPa. The hinge castings produced meet the practical requirements well, which indicates that the casting process can substitute for the welding and cutting method completely.