Method for casting blade

A blade and centrifugal casting technology, which is applied to casting molding equipment, casting molds, molding machines, etc., can solve problems such as unreasonable design, many surface and internal defects of parts, insufficient casting process parameters, etc., and achieve internal defect elimination and good strength and toughness, good elimination rate effect

Active Publication Date: 2014-01-22
邯郸市峰峰海纳机械加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of mold forming methods and the unreasonable design of the parameters of the casting process, there are many surface and internal defects of the molded parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The casting method of the blade, including mold design, mold manufacturing, raw material smelting, blanking preparation, centrifugal casting, first cooling, second forming, second cooling, trimming and sandblasting, hot isostatic pressing steps;

[0028] The blade is an engine blade, and its material is a titanium-aluminum-niobium alloy. The composition of the titanium-aluminum-niobium alloy is 46% aluminum, 5.8% niobium, 3.8% magnesium, V: 1.25%, Ta: 0.0028 %, 0.18% carbon, the balance is titanium and unavoidable impurities;

[0029] The steps of the mold design are as follows: using a water-soluble core, using the existing CAD system to design the CAD model of the engine blade, using the existing rapid prototyping process for rapid prototyping, laser sintering layer by layer sintering of polystyrene with an average diameter of 0.08mm Vinyl powder, dipped in wax to make a investment pattern, and then clean the surface and interior of the investment pattern;

[0030] T...

Embodiment 2

[0040] The casting method of the blade, including mold design, mold manufacturing, raw material smelting, blanking preparation, centrifugal casting, first cooling, second forming, second cooling, trimming and sandblasting, hot isostatic pressing steps;

[0041] The blade is an engine blade, and its material is a titanium-aluminum-niobium alloy. The composition of the titanium-aluminum-niobium alloy is 48% aluminum, 5.9% niobium, 3.7% magnesium, V: 1.35%, Ta: 0.006 %, 0.28% carbon, the balance is titanium and unavoidable impurities;

[0042] The steps of the mold design are: using a water-soluble core, using the existing CAD system design to obtain the CAD model of the engine blade, using the existing rapid prototyping process for rapid prototyping, and laser sintering layer by layer sintering of polystyrene with an average diameter of 0.09mm. Vinyl powder, dipped in wax to make a investment pattern, and then clean the surface and interior of the investment pattern;

[0043]Th...

Embodiment 3

[0053] The casting method of the blade, including mold design, mold manufacturing, raw material smelting, blanking preparation, centrifugal casting, first cooling, second forming, second cooling, trimming and sandblasting, hot isostatic pressing steps;

[0054] The blade is an engine blade, and its material is a titanium-aluminum-niobium alloy. The composition of the titanium-aluminum-niobium alloy is 45.2% aluminum, 6.0% niobium, 3.9% magnesium, V: 1.45%, Ta: 0.0068 %, 0.38% carbon, the balance is titanium and unavoidable impurities;

[0055] The steps of the mold design are: using a water-soluble core, using the existing CAD system to design the CAD model of the engine blade, using the existing rapid prototyping process for rapid prototyping, laser sintering layer by layer sintering of polystyrene with an average diameter of 0.07mm Vinyl powder, dipped in wax to make a investment pattern, and then clean the surface and interior of the investment pattern;

[0056] The manufa...

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PUM

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Abstract

The invention discloses a method for casting a blade, which is a method for casting blades by adopting precise casting. The method comprises the following steps: designing a die; manufacturing the die; melting raw materials; preparing blanking; centrifugally casting; cooling for the first time, molding for the second time, and cooling for the second time; trimming, and performing shot blasting; performing hot isostatic pressing. By virtue of the steps of the method, an excellent elimination factor of surface and internal defects of the blade of an engine can be guaranteed, and the internal microscopic tissues can be more uniform.

Description

technical field [0001] The invention relates to the field of casting, in particular to a precision casting method for engine blades. Background technique [0002] Titanium alloy has low density, high specific strength, and corrosion resistance. Due to this series of excellent characteristics, it is widely used in aerospace industry, energy industry, marine transportation industry, etc. The European Space Agency has also launched an aeronautical research program aimed at mastering titanium-aluminum-based alloy aeroengine blades and gas turbine blades. Aircraft engine thrust-to-weight ratio is one of the main indicators for evaluating modern aircraft engines, and it plays a decisive role in aircraft performance. When it is currently applied to engine blades, the more common forming method is the precision casting method. TiAl-based alloy components prepared by investment casting technology, especially components with complex shapes, can obtain precision and complex component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/28B22C13/04
Inventor 王文姣李茜邢桂生
Owner 邯郸市峰峰海纳机械加工有限公司
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