Scale of steel to overcome the difficulties
Recently, the China Steel Casting and Forging Scale of the Three Gorges Dam for the production of the rack Shiplift rough, rough opening after tooth quenched and tempered heat treatment to deal with no significant deformation of the Three Gorges Dam marked the rack manufacturing processes to enhance The successful development of domestic production is expected to resolve the issue of rack.
Shiplift of the Three Gorges Dam is located on the left bank of the Three Gorges, the Three Gorges Project permanent navigation facilities, mainly for passenger ships and special ships to provide fast access. The largest ship lift height 113 meters to upgrade and enhance the total weight of 13,000 tons. The world's largest ship lift at home and abroad by the joint design, the use of relatively safe way to upgrade gear and rack, the main project will be officially launched soon, in 2009 following the completion of a 3,000-ton ship an elevator, as only to be about 40 minutes, than take the time-saving three-quarters of five-step lock.
Three Gorges shiplift rack and pinion lifting scheme is the key equipment rack, and its rough opening rough steel casting gear after the heat treatment process into easy to deformation, as a foundry manufacturers at home and abroad it is difficult to overcome than the difficulties. As a result of difficult, technical accuracy, before the China Three Gorges Corporation, was considered to be imported. Scale China Steel Casting and Forging Casting and Forging Company has more than 50 years production history of more than 100 tons of large steel casting manufacturing technology and experience in the domestic advanced level. October 27, 2006, the company rack blank manufacturing process has been the Three Gorges ship lift rack at the scene assessment rough casting process will be recognized experts, and has two forwarding contract trial. After a year and a half years of trial, the last of the Three Gorges ship lift a rack up to standard mechanical properties testing and inspection the total length of workpiece deformation in the scope of control, fully able to meet the needs of finishing rack.