A kind of manufacturing method of gh4169 alloy fine-grain disk billet

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 difficult metal forming, unfavorable forming and quality compliance, increased forging fire times, etc., to improve fatigue resistance, Ensure the effect of fineness and uniformity
CN103465027BActive Publication Date: 2016-03-30GUIZHOU AVIATION TECHN DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU AVIATION TECHN DEV
Publication Date
2016-03-30

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Abstract

The invention discloses a method for manufacturing a GH4169 alloy fine-grained disk billet. The original billet of GH4169 is made by heating the billet, heating upsetting for the first time, upsetting for the second time, punching and rolling. Set, use three-stage heating to process the billet, preheat the metal pad and place it on both ends of the billet, then heat upsetting, select 1020 ° C for upsetting, punching, and hole expansion, and 1010 ° C for rolling. The invention can slow down the temperature drop rate of the workpiece and obtain more operable time, which is beneficial to keep the deformation of the upper and lower end surfaces of the blank consistent with the deformation of the middle section of the blank to ensure the uniformity of the structure of each part of the workpiece and avoid the critical deformation. Coarse grains are formed, so that the final grain size is better than grade 8, which ensures the fine grain structure, realizes the fine grain of the GH4169 alloy plate, and greatly improves the fatigue resistance of the GH4169 alloy.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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