Manufacturing method of large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipe
A technology for seamless pipes and manufacturing methods, which is applied in the field of manufacturing large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipes, can solve the problems of unguaranteed dimensional accuracy, poor product quality stability, and low production efficiency, and achieve production costs Low cost, stable product quality and high production efficiency
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[0021] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to specific embodiments.
[0022] A method for manufacturing a large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipe, comprising the following steps:
[0023] S1. Select high-quality sponge titanium and nickel-molybdenum alloy bags as raw materials, and mix the sponge titanium and nickel-molybdenum alloy bags according to the requirements, and produce ingots through secondary vacuum melting.
[0024] S2. The ingot in step S1 is forged into a square billet, and then subjected to blanking and surface grinding treatment in turn, and finally three upsetting and three drawing processes are performed, and die forging is made into a Gr.12 titanium-molybdenum-nickel alloy bar of φ114-φ720.
[0025] S3. Put the Gr.12 titanium-molybdenum-nickel alloy bar obtained in step S2 into an electric furnace for heating, keep the temperatur...
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