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At present, China's problems in precision plastic forming still need to be solved. The level of precision forging is low, the quality of forgings is unstable, the scrap rate is 2% to 3%, the dimensional accuracy and surface quality are poor, and the energy consumption is high. The die forgings only account for 60% of the total forgings, and precision forgings only account for 6% of die forgings; precision die forging equipment mainly depends on imports, and technical problems such as low die life are urgently needed to be solved.
To this end, we choose automotive gears, engine valves, airbag gas generator glands and casings, pistonless tails and pistons for noise-free air-conditioning compressors, gun bodies for firearms, and sucker rods for oil recovery machinery. Widely complex parts, research on closed cold forging net forming process, hot precision forging near/net forming process, precision forging forming process numerical simulation, precision forging die, CNC precision forging hydraulic press and CNC electric screw press, successfully realized Industrial development has achieved significant economic and social benefits.
This article was published in Metalworking, Thermal Processing, 2009, Issue 05
Precision plastic forming is one of the main contents of advanced manufacturing technology, and it is of great significance for the manufacturing industry to improve material utilization, energy saving and emission reduction. According to the forging industry development guide published by the American Forging Industry Association from 2003 to 2004, the core indicators for the future are: 15% reduction in forging material consumption and 90% reduction in scrap rate; mold life is 10 times longer than current, and single-piece mold cost is reduced by 50. %; the average cost of forgings is reduced by 60%. As a forging country in the world today, Japan has an annual output of 700,000 tons of precision forgings. Its precision forgings account for 37% of the total forgings, and each car has 79 varieties of cold forgings, weighing 56kg. In order to maintain its leading position in the process of globalization, Japan has proposed a strategy for the development of forging technology for the next 25 years. Its main objectives are to achieve lightweight parts, complex shapes, high precision, net shape and environmental protection, and development materials. More than 90% utilization of net forging and no environmental pollution.