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Method for manufacturing GH4169 alloy aplitic plate blank

A GH4169, manufacturing method technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, metal processing equipment, etc., can solve the problems of increased forging fire times, unfavorable forming and quality standards, and difficult metals, so as to improve fatigue resistance, Ensure the effect of fineness and uniformity

Active Publication Date: 2013-12-25
GUIZHOU AVIATION TECHN DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The ordinary and high-strength forging process of GH4169 in the past, such as CN101412066B and CN100500881C, in the upsetting process, the workpiece is in direct contact with the hammer and anvil, and the metal on both ends is not easy to flow outward due to friction. , it will form double drums, which will increase the number of forging fires for the purpose of shaping, which is not conducive to the forming and quality of products.

Method used

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  • Method for manufacturing GH4169 alloy aplitic plate blank
  • Method for manufacturing GH4169 alloy aplitic plate blank
  • Method for manufacturing GH4169 alloy aplitic plate blank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Cutting, wrapping, three-stage heating and heat preservation:

[0039] Cover the billet with asbestos pads, and heat in three stages at 845°C (calculate the heating time as 6min / 10mm), 980°C (calculate the heating time as 8min / 10mm), and 1015°C (calculate the heating time as 6min / 10mm) heating the billet;

[0040] (2) Preheat the metal pad and use it as a pad at the upper and lower ends of the blank:

[0041] Preheat the metal pad with a thickness of 30mm at 295°C and use it as a pad at the upper and lower ends of the billet;

[0042] (3) The first fire heating upsetting:

[0043] Put the blank with the metal pad on a 2500T hydraulic press for upsetting, continue to deform at a constant speed by 20%, until the temperature measured by the optical thermometer is 1000°C, stay for a short period of 8 seconds, and then continue to deform at a constant speed by 30%, to the optical temperature The temperature measured by the thermometer is 960°C, and the final forging t...

Embodiment 2

[0051] (1) Cutting, wrapping, three-stage heating and heat preservation:

[0052] Cover the billet with asbestos pads, and heat in three stages at 855°C (calculate the heating time as 6min / 10mm), 990°C (calculate the heating time as 8min / 10mm), and 1025°C (calculate the heating time as 6min / 10mm) heating the billet;

[0053] (2) Preheat the metal pad and use it as a pad at the upper and lower ends of the blank:

[0054] Preheat the metal pad with a thickness of 30mm at 305°C and use it as a pad at the upper and lower ends of the billet;

[0055] (3) The first fire heating upsetting:

[0056] Put the blank with the metal pad on a 2500T hydraulic press for upsetting, and continue to deform 30% at a constant speed until the temperature measured by the optical thermometer is 1000°C. After a short stay of 12 seconds, continue to deform 40% at a constant speed until the temperature measured by the optical thermometer is 1000°C. The temperature measured by the thermometer is 960°C...

Embodiment 3

[0064] (1) Cutting, wrapping, three-stage heating and heat preservation:

[0065] Cover the billet with asbestos pads, and heat in three stages at 850°C (calculate the heating time as 6min / 10mm), 985°C (calculate the heating time as 8min / 10mm), and 1020°C (calculate the heating time as 6min / 10mm) heating the billet;

[0066] (2) Preheat the metal pad and use it as a pad at the upper and lower ends of the blank:

[0067] Preheat the metal pad with a thickness of 30mm at 300°C and use it as a pad at the upper and lower ends of the billet;

[0068] (3) The first fire heating upsetting:

[0069] Put the blank with the metal pad on a 2500T hydraulic press for upsetting, and continue to deform it by 25% at a constant speed until the temperature measured by the optical thermometer is 1000°C. The temperature measured by the thermometer is 960°C, and the final forging temperature is ≥930°C;

[0070] (4) The second heating upsetting, punching and expanding holes:

[0071] Return to...

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Abstract

The invention discloses a method for manufacturing a GH4169 alloy aplitic plate blank. A GH4169 primary blank is prepared into the GH4169 alloy aplitic plate blank by blank heating, primary heating and upsetting, secondary heating and upsetting, punching and rolling. The method is characterized by adopting an asbestine sheath, using a three-section heating way to process the blank, preheating metal pads and heating and upsetting the blank after the metal pads are placed at the two ends of the blank, upsetting, punching and expanding the blank at 1020 DEG C, and rolling at 1010 DEG C. According to the method, the temperature reduction speed of a workpiece can be slowed down to obtain more operable time, so that the deflection of the upper and lower end planes of the blank can be brought into correspondence with the deflection of the middle section of the blank so as to guarantee the uniformity of the sturctures on the parts of the workpiece, so that coarse grains caused by the critical strain is prevented, the final grain size is prior to level 8, the fineness of grain structures can be guaranteed, the grain refining of the GH4169 alloy aplitic plate blank can be realized, and the anti-fatigue performance of the GH4169 alloy can be greatly improved.

Description

technical field [0001] The invention relates to a method for manufacturing a GH4169 alloy fine crystal plate blank. Background technique [0002] The GH4169 alloy has good comprehensive properties in the temperature range of -253 to 700 ° C, and the yield strength below 650 ° C ranks first among deformed superalloys, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, and good Machinability and welding performance. It can manufacture parts with complex shapes, and has been widely used in the above temperature range in aerospace, nuclear energy, petroleum industry and extrusion dies. Alloys have different heat treatment systems to control the grain size, control the δ phase morphology, distribution and quantity, so as to obtain different levels of mechanical properties. Alloy heat treatment system is divided into 3 categories: [0003] Ⅰ: (1010~1065)℃±10℃, 1h, oil cooling, air cooling or water cooling, 720℃±5℃, 8h, furnace coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/02B21J13/00
Inventor 吴永安杨家典张建军谢撰业张胜利
Owner GUIZHOU AVIATION TECHN DEV
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