Deformation high-temperature alloy blade forged piece and die forging method thereof

A technology for deforming superalloys and blades, which is used in metal extrusion, metal processing equipment, metal extrusion control equipment, etc. It can solve the difficulty in controlling the degree of supplementary heating in returning to the furnace, reduce the quality consistency of blade forgings, and refine grain control. Difficulty increases and other problems, to achieve the effect of simple and controllable forging process, good surface quality and complete shape

Active Publication Date: 2020-12-22
BEIJING CISRI GAONA TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this method, since the forging is directly returned to the furnace after the first fire, the surface of the forging has not undergone any treatment, and the surface quality of the forging after the first fire forging is different. Difficult to control, there is no glass lubricant sprayed on the surface of the forging, the friction is large in the second fire upsetting, the abrasive tool is damaged, and the grain structure refined by the first fire forging will grow during the high temperature heating process Behavior, the influence of factors such as increasing the difficulty of fine grain control, the control of the deformation amount of each fire in the two-fire forging, and the control of the forging return time after the first fire, reduces the consistency of the blade forging quality after heat treatment. In summary, two-fire forging not only increases the complexity of forging, but also increases the above-mentioned uncontrollable variables, which reduces the quality consistency of blade forgings

Method used

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  • Deformation high-temperature alloy blade forged piece and die forging method thereof
  • Deformation high-temperature alloy blade forged piece and die forging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A die forging method for a deformed superalloy blade forging, comprising the following steps:

[0042] S1. Planetary polishing: put the qualified nickel-based superalloy GH4169D bar into the centrifuge, the water level is 2-3cm higher than the abrasive and forging, and the polishing time is 10min to remove the machining burr and surface dirt of the bar;

[0043] S2, visual inspection and spraying lubricant: put the GH4169D bar stock after planetary light decoration in step S1 into an oven, heat the furnace temperature to 120 ° C, and heat up for 60 minutes, then take out the bar stock spraying glass lubricant from the oven, The thickness of the coating is 0.10±0.02mm. After spraying, place it at room temperature for at least 1 hour to obtain a bar material sprayed with glass lubricant;

[0044] S3. Extrusion heating: put the rod in step S2 into a furnace for heating, the furnace temperature is 950° C., and the holding time is 60 minutes.

[0045] S4. Extrusion: The ext...

Embodiment 2

[0053] A die forging method for a deformed superalloy blade forging is carried out according to the method in Example 1, the difference is that:

[0054] S3. Extrusion heating: put the bar material in step S2 into a furnace for heating, the furnace temperature is 1100° C., and the holding time is 10 minutes.

[0055] S4: Extrusion: The extrusion ratio is 9. Quickly take out the bar from the forging furnace and put it into the extrusion die of the screw press, put the chamfered end downward into the extrusion mold, and quickly strike for extrusion molding to obtain For extruded parts, the total time for billet out of the furnace, transfer and forging shall not exceed 15 seconds, and the extruded parts shall be taken out and cooled;

[0056] S8. Heating for final forging: put the extruded part in step S7 into a furnace for heating, and the furnace temperature is 1060° C. when the furnace is put into the furnace, and the holding time is 5 minutes;

[0057] S9. Final forging: Qui...

Embodiment 3

[0059] A die forging method for a deformed superalloy blade forging is carried out according to the method in Example 1, the difference is that:

[0060] S3. Extrusion heating: put the rod in step S2 into a furnace for heating, the furnace temperature is 1060° C., and the holding time is 25 minutes.

[0061] S4: Extrusion: The extrusion ratio is 6. Quickly take out the bar from the forging furnace and put it into the extrusion die of the screw press, put the chamfered end downward into the extrusion mold, and quickly strike for extrusion molding to obtain For extruded parts, the total time for billet out of the furnace, transfer and forging shall not exceed 15 seconds, and the extruded parts shall be taken out and cooled;

[0062] S8. Heating for final forging: put the extruded part in step S7 into a furnace for heating, the furnace temperature is 1030°C during furnace charging, and the holding time is 15 minutes;

[0063] S9. Final forging: Quickly take out the extruded part...

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Abstract

The invention discloses a deformation high-temperature alloy blade forged piece and a die forging method thereof. The die forging method comprises the following steps: extrusion heating, specifically,the heating temperature is 950-1100 DEG C, and the heat preservation time is 10-60 min; extrusion forming; finish forging heating, specifically, the heating temperature is 910-1060 DEG C, and the heat preservation time is 5-60 min; and finish forging for obtaining a finish forged piece. The provided method can effectively realize the consistency of the quality of the forged pieces, increases thequalification rate of the finished forge piece and improve the quality of the finished forge piece. The invention further discloses a deformation high-temperature alloy blade forged piece obtained through the die forging method. The deformation high-temperature alloy blade forged piece has the advantages that the surface is free of cracks, and the internal structure meets the design requirement, the requirements for the shape and size of an aero-engine blade and for the performance at the high temperature of 650 DEG C to 750 DEG C can be met, and the requirement for the temperature bearing capacity of a blade material due to the fact that the performance and the use requirement of an aero-engine are continuously improved is met.

Description

technical field [0001] The invention relates to the technical field of engine blade forging, more specifically, it relates to a deformed superalloy blade forging and a die forging method thereof. Background technique [0002] With the continuous improvement of the performance and use requirements of aero-engines, the requirements for the performance and profile of aero-engine blade materials are getting higher and higher, and the existing materials can no longer meet the requirements of the working conditions of the blades. At present, the limit working temperature of GH4169 alloy, which is the most widely used at home and abroad, is 650°C, which can no longer meet the requirements of aero-engine blades on the material's temperature-bearing capacity. The GH4169D alloy is an improved version of the GH4169 alloy. On the basis of inheriting the main advantages of the GH4169 alloy, the service temperature is increased by at least 55°C. It is considered to be the "next generation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J1/06B21J5/02B21C29/00B21C31/00C22C19/05B05D7/14B05D3/02
CPCB21J5/002B21J1/06B21J5/02B21C29/003B21C31/00C22C19/055B05D7/14B05D3/0218
Inventor 王民庆杜金辉邓群刘辉朱勤天胡日吴玉博王知颖
Owner BEIJING CISRI GAONA TECH
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