Hot-forming and forging method for large-sized high-temperature alloy turbine disc
A high-temperature alloy and turbine disk technology, which is applied in metal processing equipment, wheels, manufacturing tools, etc., can solve the problem of inability to realize the localization of heavy-duty gas turbines, and achieve strong equipment versatility, long thermal processing time, and strong operability. Effect
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[0035] A certain iron and steel company implements the patent of this invention. On the existing 4000-ton hydraulic press equipment in China, it adopts the five-step thermal forming process and successfully produces 6 GH2674 large-scale superalloy turbine disks (diameter φ1900mm) required by a certain type of heavy-duty gas turbine in China. ~φ2220mm (take the finished product specification size d1=φ2000mm as an example): first, billet preparation, using the conventional electroslag ingot pier drawing production process method, the 900mm electroslag ingot is prepared into a cylindrical alloy billet with a height-to-diameter ratio of 2.3 (d2 =φ720mm), and the surface of the cylinder is polished, and the defect is partially polished. The aspect ratio of the grinding is greater than 6. Second, the billet is wrapped with heat preservation and heated, and the alloy billet in the high temperature state of 850-1100 ℃ is covered with a specific he...
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