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Preparing method of high-uniformity TC11 alloy bar for blade

A technology of TC11, alloy bar, applied in the field of titanium alloy processing, can solve the problem of uneven structure of TC11 alloy

Active Publication Date: 2018-05-15
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of non-uniform TC11 alloy structure caused by conventional precision forging and rolling, and a method for preparing a high-uniform TC11 alloy bar for blades

Method used

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  • Preparing method of high-uniformity TC11 alloy bar for blade
  • Preparing method of high-uniformity TC11 alloy bar for blade
  • Preparing method of high-uniformity TC11 alloy bar for blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1, one-fire precision forging of the bar:

[0033] A typical two-state structure obtained by high-temperature billet forging at 150°C to 200°C above the phase transition point and full forging deformation in the two-phase region at 40°C to 80°C below the phase transition point, in which the primary α is spherical and contains more than 60% of TC11 Titanium alloy Φ85mm precision forging billet, heated at 40℃~80℃ below the phase transition point, using SKK-10 precision forging machine for one-fire precision forging to Φ55mm intermediate precision forging blank, the precision forging pass is 5 passes, and each pass deforms Amount of 15%;

[0034] Step 2, the homogenization of the intermediate billet:

[0035] Place the intermediate precision forging billet obtained in step 1 in a box-type heat treatment resistance furnace, heat it at 40°C to 80°C below the phase transition point, carry out air firing for 60 minutes, and then air cool it to improve the structure unifo...

Embodiment 2

[0041] Step 1, one-fire precision forging of the bar:

[0042] It is a typical two-state structure obtained by high-temperature billet forging at 150°C to 200°C above the phase transition point and full forging deformation in the two-phase region at 40°C to 80°C below the phase transition point, in which the primary α is spherical and the content is greater than 60%. TC11 titanium alloy Φ95mm precision forging billet, heated at 40℃~80℃ below the phase transition point, using SKK-10 precision forging machine for one-fire precision forging to Φ65mm intermediate precision forging billet, the precision forging pass is 5 passes, each pass The amount of deformation is 15%;

[0043] Step 2, the homogenization of the intermediate billet:

[0044] Place the intermediate precision forging billet obtained in step 1 in a box-type heat treatment resistance furnace, heat it at 40°C to 80°C below the phase transition point, carry out air firing for 60 minutes, and then air cool it to improv...

Embodiment 3

[0051] Step 1, one-fire precision forging of the bar:

[0052] It is a typical two-state structure obtained by high-temperature billet forging at 150°C to 200°C above the phase transition point and full forging deformation in the two-phase region at 40°C to 80°C below the phase transition point, in which the primary α is spherical and the content is greater than 60%. TC11 titanium alloy Φ85mm precision forging billet, heated at 40℃~80℃ below the phase transition point, using SKK-10 precision forging machine for one-fire precision forging to Φ45mm intermediate precision forging blank, the precision forging pass is 5 passes, each pass The amount of deformation is 15%;

[0053] Step 2, the homogenization of the intermediate billet:

[0054] Place the intermediate precision forging billet obtained in step 1 in a box-type heat treatment resistance furnace, heat it at 40°C to 80°C below the phase transition point, perform air firing for 40 minutes, and then air cool it to improve t...

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Abstract

The invention discloses a preparing method of a high-uniformity TC11 alloy bar for a blade. A TC11 titanium alloy precision forging blank subject to blooming forging and two-phase area forging is taken and heated below the phase change point, precision forging machine-fire multi-pass precision forging is adopted to obtain a medium precision forging blank; the medium precision forging blank is heated and subject to empty burning under the phase change point, and the structural uniformity of the medium precision forging blank is improved; the medium precision forging blank with the uniform structure is heated below the phase change point, and precision forging machine-fire multi-pass precision forging is adopted to form a finished product bar or the precision forging blank is subject to endcutting and discharging to prepare a rolled blank; the precision forging finished product bar is heated and subject to empty burning below the phase change point, and preparing of the high-uniformityTC11 precision forging bar for the blade is achieved or the rolled blank is heated below the phase change point; transverse column type hot rolling machine-fire multi-pass rolling is adopted to obtainthe high-uniformity TC11 rolled bar for the blade. The finally-obtained TC11 alloy precision forging and rolling bar for the blade is uniform and consistent in transverse high-power side and heart structure, the performance is stable, the corresponding material standard needs are met, the batch consistency is good, and the high-quality needs of an engine for the blade TC11 alloy bar are met.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy processing, and in particular relates to a method for preparing a highly uniform TC11 alloy rod for blades. Background technique [0002] Nominal composition of TC11 alloy: Ti-6.5Al-3.5Mo-1.5Zr-0.3Si, is a kind of α+β type heat-strength titanium alloy with good comprehensive performance, and has good hot working process at 500 °C. It is mainly used to make compressor discs, blades, drums and other parts of aero-engines. The commonly used processing method of TC11 alloy rods for blades is to meet the long-term working requirements of blades at 500°C high temperature through precision forging and rolling in the α+β zone thermal deformation and α+β zone heat treatment. [0003] The deformation of precision forging is the layer-by-layer deformation of the outer surface inward. The outer surface of the bar is deformed violently, and the deformation of the center is relatively weak. Finally, the...

Claims

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Application Information

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IPC IPC(8): C22F1/18
Inventor 孙小平和永岗侯峰起王静楠郑念庆赖运金刘向宏
Owner 西部超导材料科技股份有限公司
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