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Preparation method of small and medium-sized titanium and titanium alloy thin-wall pipes

A thin-walled pipe and titanium alloy technology, applied in the field of non-ferrous metal pressure processing, can solve the problems of low production efficiency, low raw material utilization rate, affecting the application of titanium and titanium pipes, etc.

Active Publication Date: 2022-01-04
XINJIANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of titanium and titanium seamless pipes also has the disadvantages of low production efficiency, long process flow, low utilization rate of raw materials, and high production costs, which affect the application of titanium and titanium pipes in seawater desalination and power station fields

Method used

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  • Preparation method of small and medium-sized titanium and titanium alloy thin-wall pipes
  • Preparation method of small and medium-sized titanium and titanium alloy thin-wall pipes
  • Preparation method of small and medium-sized titanium and titanium alloy thin-wall pipes

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Embodiment Construction

[0038] The present invention adopts electron beam cold bed furnace to carry out industrial pure titanium (TA1, TA1ELI, TA1-1, TA2, TA2ELI, TA3, TA3ELI), TA4, TA4ELI, TA5, TA6, TA7, TA7ELI, TA8, TA8-1, TA9, TA9-1 and TA10 are smelted once, and the industrial pure titanium is smelted for the second time by adopting the vacuum auto-arc melting process to obtain industrial pure titanium ingots. Vacuum induction melting-plasma cooling hearth furnace refining process was used to melt and cast TA7 alloy to obtain TA7 high-quality ingot. Before rolling, the industrial pure titanium (TA0, TA1, TA2, TA3) and TA7 alloy ingots are forged and billeted, and the two-stage ingot heating process of slow heating at low temperature and rapid heating at high temperature is adopted, which can reduce the cost of casting The temperature difference stress of the ingot can shorten the residence time of the ingot at high temperature and reduce the pollution of the gas to the ingot.

[0039] (TA1, TA1E...

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Abstract

The invention discloses a preparation method of small and medium-sized titanium and titanium alloy thin-wall pipes. According to the preparation method, industrial pure titanium is cast by adopting an electron beam cold bed melting-vacuum consumable arc melting process, a TA7 alloy is refined by adopting vacuum induction melting-plasma, impurities in the alloy are removed through melting, dissolving, flotation and sedimentation for removing inclusions in the alloy, the burning loss of low-melting-point alloy elements such as aluminum and tin is reduced, and harmful gas impurities in the alloy are removed. Segmented heating and forging cogging are adopted, and air suction pollution of cast ingots is reduced. The hot rolling-warm rolling-cold rolling process is adopted, so that the plasticity of the alloy can be utilized to the maximum extent, annealing and pickling procedures are reduced, and metal oxidation and pickling metal loss are reduced. The thin-wall pipes with the diameter ranging from phi 6.3 mm to phi 7.26 mm and the wall thickness ranging from 0.10 mm to 0.8 mm are welded through rolled strips to replace seamless pipes, and the method has the advantages of high raw material utilization rate, high production efficiency and good economic benefit.

Description

technical field [0001] The invention relates to titanium and titanium processing, and belongs to the technical field of nonferrous metal pressure processing, in particular to a method for preparing small and medium-sized titanium and titanium alloy thin-walled pipes. Background technique [0002] Condenser tubes are the core components of condensers for submarines, ships, power plants, nuclear power plants and seawater desalination. High thermal conductivity, long service life and corrosion resistance to harsh water quality are extremely important performances of condenser tubes. Water is an indispensable resource for human life. A person needs to drink about 3 liters of fresh water a day. As the global shortage of fresh water resources intensifies, desalination of seawater is an effective way to solve the crisis of fresh water shortage. Multi-stage flash evaporation is the most widely used seawater desalination method. In this method, seawater is heated to 120°C, subjected ...

Claims

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Application Information

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IPC IPC(8): C22B34/12C22B9/22C22B9/20C22B9/04C22C1/03C22C14/00C22F1/02C22F1/18B23P15/00
CPCC22B34/1295C22B9/20C22B9/228C22B9/04C22B9/003C22B9/226C22C1/03C22C14/00C22F1/183C22F1/02B23P15/00Y02P10/20Y02P10/25Y02A20/124
Inventor 贺永东孙郅程
Owner XINJIANG UNIVERSITY
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