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Semisolid rheological forming technique method for forming high-performance three-dimensional variable section high-temperature structural parts

A semi-solid rheological and structural parts technology, applied in the field of semi-solid forming, can solve the problems of high production cost, high energy consumption, pores, segregation, bubbles and other defects that are difficult to eliminate, and achieve high production cost, long process flow, and convenient The effect of smooth separation

Inactive Publication Date: 2013-08-21
青盟投资顾问(北京)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, with the rapid development of aerospace, electronic communication, petrochemical and other fields, the complexity of related components is getting higher and higher, and the use environment is becoming more and more harsh. High-temperature complex structural parts can usually only be realized by mechanical cutting, or by conventional casting, but it is difficult to eliminate defects such as pores, segregation, and bubbles in casting
In addition, the manufacturing methods of low production efficiency, high energy consumption and high production cost of conventional processing methods have become incompatible

Method used

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  • Semisolid rheological forming technique method for forming high-performance three-dimensional variable section high-temperature structural parts
  • Semisolid rheological forming technique method for forming high-performance three-dimensional variable section high-temperature structural parts
  • Semisolid rheological forming technique method for forming high-performance three-dimensional variable section high-temperature structural parts

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Experimental program
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preparation example Construction

[0025] ① Preparation of semi-solid slurry

[0026] In order to realize semi-solid rheological forming, the preparation of semi-solid slurry with uniform composition, structure and performance and round and fine solid particles is the prerequisite. First use a resistance furnace to heat the dried blocky commercial high-temperature alloy ingot. To prevent oxidation, use argon as a protective gas. After reaching the complete melting temperature, keep it warm for 10-20 minutes.

[0027] ②Design of fast quantitative delivery device for semi-solid slurry

[0028] Design and process a ceramic crucible that can be half-opened. The volume of the crucible is equal to the volume of the target part. Two pairs of half-open ceramic crucibles are respectively fixed on both sides of a clamp that is convenient for manual operation, which can solve the rapid and quantitative delivery of slurry, and also facilitate the smooth separation of semi-solid blanks and crucibles, and facilitate the cru...

Embodiment 1

[0036] Using 718 superalloy for semi-solid rheological forging to form the three-dimensional variable cross-section structural parts in Figure-1

[0037] Firstly, heat and melt the massive commercial 718 superalloy ingot that has been dried (dried at 100° C.) in a resistance furnace, and after it is completely melted in the high temperature resistance furnace, keep it for 12 minutes. Design and process a split-type ceramic crucible for storing superalloy slurry, whose volume is equal to that of the target part. In order to ensure uniform heat dissipation of the slurry, the inner diameter of the ceramic crucible is approximately equal to its depth. Fix the two halves of the split crucible on both sides of a clamp that is convenient for manual operation, and use an electric heating device to preheat the crucible to 350 °C. After the superalloy melt was poured into the crucible and controlled to cool for 5 seconds, the crucible was opened, and the semi-solid billet was quickly p...

Embodiment 2

[0039] Using 718 superalloy for semi-solid rheological forging to form the three-dimensional variable cross-section structural parts in Figure-1

[0040] First, heat and melt the block commercial 718 superalloy ingot that has been dried (dried at 100° C.) in a resistance furnace. After melting completely in the high-temperature resistance furnace, keep it warm for 15 minutes. Design and process a split-type ceramic crucible for storing superalloy slurry, whose volume is equal to that of the target part. In order to ensure uniform heat dissipation of the slurry, the inner diameter of the ceramic crucible is approximately equal to its depth. Fix the two halves of the split crucible on both sides of a clamp that is convenient for manual operation, and use an electric heating device to preheat the crucible to 370°C. After the superalloy melt was poured into the crucible and controlled to cool for 7 seconds, the crucible was opened, and the semi-solid billet was quickly poured fro...

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Abstract

The invention relates to a semisolid rheological forming technique method for forming high-performance three-dimensional variable section high-temperature structural parts. The semisolid rheological forming technique method includes steps of preparing semisolid slurry, designing a quantitative conveyor for semisolid rheological forming slurry, controlling and cooling the semisolid rheological forming slurry and forming the three-dimensional variable section high-temperature structural parts and the like. By the technique method, manufacturing methods of the three-dimensional variable section high-temperature structural parts are enriched; and forming manufacture of the high-temperature structural parts is short in technique process and close to final shapes. Besides, energy consumption is reduced and product quality is improved.

Description

technical field [0001] The invention relates to a semi-solid rheological forming process for forming high-performance three-dimensional variable cross-section high-temperature structural parts, and belongs to the technical field of semi-solid forming. Background technique [0002] With the increasingly prominent environmental and energy issues, the problems of high energy consumption, heavy pollution and low cost performance in my country's metallurgical industry have become increasingly prominent. Constantly adjusting and improving the growth mode and development direction of industrial enterprises will gradually push my country from a large processing country to a processing power. In the material processing industry, in order to improve product quality, reduce environmental pollution, and enhance its international competitiveness, it is urgent to start from the frontier of metallurgical material science, break through traditional material preparation and process theories a...

Claims

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Application Information

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IPC IPC(8): B22D17/00
Inventor 王玉伟
Owner 青盟投资顾问(北京)有限公司
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