2011-12-15 14:41:14PRINT
Multi-way Closed Die Forging made a breakthrough and Large forging valve produced independently
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The technology of Multi-way Closed Die Forging made a breakthrough and Large forging valve independently Lacking of quality valve forgings will be a history in China’s large castings and forgings industry. MMC Jingtang (Tangsahn) Precision Forging Co.,Ltd and Tsinghua University make the world first Wire-Winding Prestressed 40MN Multi-way Closed Die Forging press. And the press formed Vacuum Valves successfully. Yongbin Sui the Chief engineer of China machinery industry federation, President of China General Machinery Industry Association said they solved the technical difficulties of producing Large Diameter valves in the high temperature and pressure and found a technology innovation route for producing valves used in ultra-supercritical thermal power and nuclear. Filled the blank Now, the valve manufacturing industry in the high-end technology there is still a wide gap with the highest international level. First, lack of high-quality castings and forgings, second the detection of high-end valve backward. In order to meet the needs of the nuclear power,thermal power, oil and petrochemical industry, we spend 3 billion dollars importing Large Diameter valves. Although, we can produce small diameter valves by ourselves, open-forging or integrally forging, then machining inside surface, but the processing seriously waste material and resources. But Multi-way Closed Die Forging can take one step to produce complex die forgings. It can solve the vacuum valve flange welded defects manufactured by traditional process, improve material utilization, reduce the amount of follow-up process, save time. April 2, 2011 in MMC Jingtang (Tangsahn) Precision Forging Co.,Ltd the Multi-way Closed Die Forging press forged out vacuum valves used for nuclear power. Filled the blank in the field. In addition, in our country we research the standard of the valves late, and the degree of product standardization is not high, so it is hard to promote the multi-die forging technology. Establishing uniform standards of the valves is very important. |
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