Forging process for difficult-to-deform high-temperature alloy plate slab

A high-temperature alloy, hard-to-deform technology, applied in the field of metallurgy, can solve the problems of difficult processing and poor plasticity, achieve the effects of simple structure, avoid small-angle shaking, and improve distribution uniformity

Active Publication Date: 2020-02-18
AVIC SHANGDA METAL REGENERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Difficult-to-deform superalloys have high cross-form resistance, many high-temperature strengthening phases, and poor plasticity. It is difficult to achieve effective processing by ordinary processing and forging processes.

Method used

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  • Forging process for difficult-to-deform high-temperature alloy plate slab
  • Forging process for difficult-to-deform high-temperature alloy plate slab
  • Forging process for difficult-to-deform high-temperature alloy plate slab

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Experimental program
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specific Embodiment approach

[0021] A specific embodiment of the present invention comprises the following steps:

[0022] A. Heat the slab to 995°C and keep it warm for 2 hours;

[0023] B. Put the slab into the forging press for forging, and the forging pressing speed is 6mm / min;

[0024] C. When the forging deformation reaches 70% of the standard value, take out the slab and reheat it to 880°C for 4 hours;

[0025] D. Put the slab back into the forging press for forging, the forging pressing speed is 3mm / min, until the forging is completed.

[0026] The thickness of the slab is 65mm, and the slab comprises the following components,

[0027] 0.02wt% C, 4.5wt% Fe, 5wt% Al, 7wt% Ti, 12wt% W, 13wt% Co, 7wt% Cr, 0.5wt% Mn, 2.5wt% Mo, and The amount is Ni.

[0028] In step A, the temperature is first raised to 750°C at a rate of 75°C / min, then kept at a temperature of 15 minutes, and then raised to the set temperature.

[0029] In step C, the initial temperature rise rate is 50°C / min, and the temperatur...

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Abstract

The invention discloses a forging process for difficult-to-deform high-temperature alloy plate slab. The forming process comprises the following steps: A, heating plate slab to a temperature of 975-1005 DEG C, and preserving the heat for 1-2 hours; B, putting the plate slab into a forging press to forge, wherein forging pressing speed is 5-10 mm / min; C, taking out the plate slab to re-heat to a temperature of 850-910 DEG C and preserving heat for 3-5 hours while forging deformation amount achieves 70% of the standard value; and D, putting the plate slab into the forging press to forge again until forging is accomplished, wherein forging pressing speed is 1-3 mm / min. The forging process can improve the defects of the prior art, and realizes low-temperature forging of the difficult-to-deformhigh-temperature alloy.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a forging process of a difficult-to-deform superalloy slab. Background technique [0002] Difficult-to-deform superalloys have high cross-form resistance, many high-temperature strengthening phases, and poor plasticity. It is difficult to achieve effective processing by ordinary processing and forging processes. And hard-to-deform superalloys are necessary materials in many special industries, so how to optimize the processing and forging methods of hard-to-deform superalloys has become one of the hot spots in this field of research. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hard-to-deform superalloy slab forging process, which can solve the deficiencies of the prior art and realize low-temperature forging of the hard-to-deform high-temperature alloy. [0004] In order to solve the above technical problems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J1/06B21J1/00B21J9/02
CPCB21J1/003B21J1/06B21J5/00B21J9/02
Inventor 张欢欢刘猛李爱民闫森田水仙葛书可
Owner AVIC SHANGDA METAL REGENERATION TECH
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