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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

Pending Publication Date: 2022-04-05
安徽宝泰特种材料有限公司
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Problems solved by technology

At present, the processing of titanium-molybdenum-nickel alloy seamless pipes mainly adopts plate molding welding technology or extrusion forming technology, and the production method of large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipes with cross-rolling and perforation technology is not yet mature. , the production cost is high, the dimensional accuracy cannot be guaranteed, the product quality stability is poor, and the production efficiency is low

Method used

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Embodiment Construction

[0021] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with specific embodiments.

[0022] A kind of manufacture method of large diameter Gr12 titanium-molybdenum-nickel alloy seamless pipe, comprises the following steps:

[0023] S1. Select high-quality sponge titanium and nickel-molybdenum alloy bag as raw materials, and mix the sponge titanium and nickel-molybdenum alloy bag according to the requirements, and produce ingots through secondary vacuum melting.

[0024] S2. The ingot in step S1 is forged into a billet, and then blanking and surface grinding are performed in sequence, and finally three upsetting and three drawing are performed to form a Gr.12 titanium-molybdenum-nickel alloy rod 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 it warm for 2-8 hours, and use a three-roll cross-rollin...

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Abstract

The invention relates to a manufacturing method of a large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipe, which adopts the steps of vacuum melting, three-time upsetting and three-time drawing, heating and perforating, reducing treatment, necking and drawing and the like, and the manufactured large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipe is better in inner and outer surface quality, excellent in mechanical property, favorable for ensuring the comprehensive performance of the product, high in product precision, high in yield, high in product quality and high in product quality. The product quality is stable, the production cost is low, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of metal products, in particular to a method for manufacturing large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipes. Background technique [0002] As a high-strength metal material, titanium-molybdenum-nickel alloy is widely used in petroleum pipelines, submarine pipelines, petrochemical, automobile industry, electronics industry and other industries. At present, the processing of titanium-molybdenum-nickel alloy seamless pipes mainly adopts plate molding welding technology or extrusion forming technology, and the production method of large-diameter Gr12 titanium-molybdenum-nickel alloy seamless pipes with cross-rolling and perforation technology is not yet mature. , the production cost is high, the dimensional accuracy cannot be guaranteed, the product quality stability is poor, and the production efficiency is low. Contents of the invention [0003] The object of the present invention is ...

Claims

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Application Information

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IPC IPC(8): B21C37/06C21D8/10C21D9/08C21D1/26C22F1/18
Inventor 李贤泉孙建芮天安杨根荣翟皓周雄杰王超张贝
Owner 安徽宝泰特种材料有限公司
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