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Process method for reducing metallurgical defects of gh4169 nickel-base alloy ingot

A GH4169, nickel-based alloy technology, applied in metal processing equipment and other directions, can solve problems such as metallurgical defects and affect product quality, and achieve the effect of reducing defects, improving alloy purity, and reducing metallurgical defects

Active Publication Date: 2021-06-15
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, almost without exception, nickel-based superalloys are smelted once by vacuum induction melting, and then smelted for the second time, or even smelted for the third time; Vacuum induction melting VIM + protective atmosphere electroslag remelting ESR) is developing to triple process (vacuum induction melting VIM + protective atmosphere electroslag remelting ESR + vacuum self-consumption remelting VAR), the macroscopic and microscopic segregation control of alloy ingots is improved, and the composition uniformity is improved. However, due to the defects of chemical composition segregation and core metallurgy in the alloy ingot obtained by vacuum induction melting VIM or vacuum induction melting VIM+protective atmosphere electroslag remelting ESR, the large ingot type alloy ingot after vacuum self-consumption refraction Metallurgical defects occur from time to time after melting VAR, seriously affecting product quality

Method used

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  • Process method for reducing metallurgical defects of gh4169 nickel-base alloy ingot

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Embodiment 1

[0025] This embodiment is a method for producing a GH4169 nickel-based alloy ingot metallurgical defect using the present invention, by vacuum induction smelting, homogenization, fastging, and vacuum self-consuming weight, producing φ406mm specifications GH4169 alloy ingot.

[0026] Step A VIM Solmetry: Use a vacuum induction smelting (Vim) to melt the various raw materials into a Chemical component and the non-metal inclusions satisfying the required GH4169 alloy, and the vacuum cast into a alloy ingot having a diameter φ360 mm specification; step B homogenization processing: Put step The alloy ingot obtained by the diameter φ360mm specification is homogenized, and the homogenization temperature is 20 ° C below the GH4169 nickel-based alloy, and the homogenization time is 25h. Step c fast Forged tap: Use a 4500T press to perform a rough out of the alloy ingot of step B through the homogeneous process, the heating temperature is 1100 ° C, control the upset pressure rate of 30%, un...

Embodiment 2

[0030] This embodiment is a method for producing a GH4169 nickel-based alloy ingot metallurgical defect using the present invention, by vacuum induction smelting, homogenization, fast forging, and vacuum self-consuming, and produces φ508 mm specifications GH4169 alloy ingot.

[0031]Step A VIM Solmetry: Use a vacuum induction smelting (VIM) to melt various raw materials into chemical composition and non-metal inclusions to satisfy the requirements of the GH4169 alloy, and the vacuum cast into a diameter φ450 mm-specific alloy ingot; step B homogenization: Put step A alloy ingot obtained by the diameter φ450mm specification is homogenized, and the homogenization temperature is 10 ° C below 10 ° C below the GH4169 nickel-based alloy, homogenized time 35 h. Step c fast Forged tap: Use a 4500T press to carry out step B through the alloy ingots of the homogenization, the heating temperature is 1120 ° C, control the upset ratio of 40%, unplug the lower pressure rate 20 %, GH4169 alloy i...

Embodiment 3

[0035] This embodiment is a method for producing a GH4169 nickel-based alloy ingot metallurgical defect using the present invention, by vacuum induction smelting, homogenization, fast forging, and vacuum self-consuming, and produces φ508 mm specifications GH4169 alloy ingot.

[0036] Step A VIM Solmetry: Use a vacuum induction smelting (VIM) to melt various raw materials into chemical composition and non-metal inclusions to satisfy the requirements of the GH4169 alloy, and the vacuum cast into a diameter φ450 mm-specific alloy ingot; step B homogenization: Put step The alloy ingot obtained by the diameter φ450mm specification is homogenized, the homogenization temperature is 20 ° C below the GH4169 nickel-based alloy, and the homogenization time is 40 h. Step c fast Forged tap: Use a 4500T press to make the step B through the alloy ingot of the homogenization process, the heating temperature is 1150 ° C, control the upset ratio of 35%, unplug the lower pressure rate 17 %, GH4169 a...

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Abstract

The invention discloses a process method, in particular a process method for reducing metallurgical defects of a GH4169 nickel-based alloy ingot, and belongs to the technical field of nickel-based alloy remelting production technology. Provided is a process method for reducing metallurgical defects of GH4169 nickel-based alloy ingots with few finished product quality defects. The process method uses the GH4169 nickel-based alloy smelting ingot obtained by vacuum induction melting as the base ingot, and obtains reduction of the metallurgical defects of the GH4169 nickel-based alloy ingot through one homogenization treatment, one quick forging upsetting and one remelting.

Description

Technical field [0001] The present invention relates to a process method, and more particularly to a process method that reduces the metallurgical defect of GH4169 nickel-based alloy ingot, belongs to the technical field of nickel-based alloy melting production process. Background technique [0002] High temperature alloys have a high temperature strength, good oxidation and thermal erosion resistance, and therefore the material of about 50% of the modern air gas turbine engine is high temperature alloy. Among them, the amount of the nickel-based high-temperature alloy is from about 40% in the engine material, and the GH4169 is widely used in the preparation of an aviation aerospace engine, a high-performance component of a gas turbine. As aeronautical thrust and pushing ratio are increasing, the turbine import temperature is constantly improving the anti-thermal corrosion capacity, high temperature strength, creep strength, and anti-fatigue performance of nickel-based high tempe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/03C22C1/02C22F1/10B21J5/08B21J5/06
CPCB21J5/06B21J5/08C22C1/023C22C19/03C22F1/10
Inventor 蒋世川张健周扬赖宇
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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