Method for preparing K424 cast superalloy through K417G and DZ417G alloy returns

A high-temperature alloy and return material technology, which is applied in the field of high-temperature alloy preparation, can solve the problems of destroying the ecological environment, alloy return materials cannot be used according to the original grade, and resource waste, so as to improve the ecological environment, reduce production costs, and reduce resource waste. Effect

Active Publication Date: 2016-03-23
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the produced alloy returns cannot be used according to the original grade, they are trea

Method used

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  • Method for preparing K424 cast superalloy through K417G and DZ417G alloy returns
  • Method for preparing K424 cast superalloy through K417G and DZ417G alloy returns
  • Method for preparing K424 cast superalloy through K417G and DZ417G alloy returns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The method of using K417G and DZ417G alloy return materials in this embodiment to prepare K424 cast superalloy is carried out according to the following steps:

[0025] The K417G alloy return material and the DZ417G alloy return material produced in the casting production process were respectively loaded into the drum for tumbling treatment. The tumbling treatment time was 6.5 hours, and then the surfaces of the two alloy return materials were blasted separately, and then dried with a dry Compressed air blows the surface of the two alloy return materials piece by piece, and obtains the purified K417G alloy return material and DZ417G alloy return material;

[0026] (2) Smelting return materials and castable ingots:

[0027] A 500kg semi-continuous vacuum induction melting furnace is used to melt the purified K417G alloy return materials and DZ417G alloy return materials respectively. The specific melting conditions are: put the first batch of alloy return materials into ...

Embodiment 2

[0036] The method of using K417G and DZ417G alloy return materials in this embodiment to prepare K424 cast superalloy is carried out according to the following steps:

[0037] The K417G alloy return material and the DZ417G alloy return material generated during the casting production process were put into the drum for tumbling treatment, and the tumbling treatment time was 7 hours, and then the surfaces of the two alloy return materials were blasted separately, and then dried Compressed air blows the surface of the two alloy return materials piece by piece, and obtains the purified K417G alloy return material and DZ417G alloy return material;

[0038] (2) Smelting return materials and castable ingots:

[0039] A 500kg semi-continuous vacuum induction melting furnace is used to melt the purified K417G alloy return materials and DZ417G alloy return materials respectively. The specific melting conditions are: put the first batch of alloy return materials into the crucible of the ...

Embodiment 3

[0047] The method of using K417G and DZ417G alloy return materials in this embodiment to prepare K424 cast superalloy is carried out according to the following steps:

[0048] The K417G alloy return material and the DZ417G alloy return material generated during the casting production process were put into the drum for tumbling treatment, and the tumbling treatment time was 7.5 hours, and then the surfaces of the two alloy return materials were blasted separately, and then dried Compressed air blows the surface of the two alloy return materials piece by piece, and obtains the purified K417G alloy return material and DZ417G alloy return material;

[0049] (2) Smelting return materials and castable ingots:

[0050] A 500kg semi-continuous vacuum induction melting furnace is used to melt the purified K417G alloy return materials and DZ417G alloy return materials respectively. The specific melting conditions are: put the first batch of alloy return materials into the crucible of th...

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Abstract

The invention belongs to the technical field of superalloy preparation and particularly relates to a method for preparing K424 cast superalloy through K417G and DZ417G alloy returns. The method includes the steps that firstly, the K417G and DZ417G alloy returns are remelted and refined respectively, and then 14%-22% of the K417G alloy returns, 50%-42% of the DZ417G alloy returns and 36% of metal elements are adopted to be refined under high vacuum and high temperature conditions to be prepared into the K424 cast superalloy meeting product using requirements. According to the method, the K417G and DZ417G alloy returns are used reasonably, and the precious metal elements such as Co, Ni and Mo are reused, so that waste of resources is reduced, the ecological environment is improved, and the production cost of castings is lowered; about 150 thousand yuan is saved in production of one ton of the superalloy, and the annular benefit can reach 1.5 million yuan if ten tons of the K424 cast superalloy is produced every year according to the method.

Description

technical field [0001] The invention belongs to the technical field of high-temperature alloy preparation, and in particular relates to a method for preparing K424 casting high-temperature alloy by using returned materials of K417G and DZ417G alloys. Background technique [0002] K424 alloy is formed by adding a small amount of tungsten and niobium on the basis of In100. It is a high-Al, Ti, low-density casting high-temperature alloy. Components, which contain more first-phase strengthening elements and solid solution strengthening elements titanium, aluminum, cobalt, niobium, tungsten, molybdenum and chromium, the chemical composition is similar to that of the Russian alloy grade ВЖЛ-12У, and has high high temperature strength and plasticity With good manufacturability, it is mainly used for the manufacture of integrally cast turbines and regulator blades and other components that work below 950°C. [0003] Both K417G and DZ417G alloys are nickel-based casting superalloys ...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C19/05
CPCC22C1/023C22C19/05
Inventor 满延林王宇飞倪伟刘建平杨刚
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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