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Turbine blade for high-performance gasoline engine, and preparation method thereof

A technology for turbine blades and gasoline engines, which is applied in the direction of turbines, mechanical equipment, blade support components, etc., can solve the problems of HK30 turbine blades such as large gap in high temperature performance, low production efficiency, and long preparation time, and achieve simple procedures and high production efficiency , The effect of shortening the holding time

Active Publication Date: 2021-05-07
湖南英捷高科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the high temperature performance of HK30 turbine blades prepared by these methods is still far behind that of Inconel713, and the preparation time is long, the production efficiency is low, and the production cost is high.

Method used

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  • Turbine blade for high-performance gasoline engine, and preparation method thereof
  • Turbine blade for high-performance gasoline engine, and preparation method thereof
  • Turbine blade for high-performance gasoline engine, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of preparation method of turbine blade for high-performance gasoline engine, its process is as follows:

[0047] A. Raw material preparation: the matrix material is mixed with HK30 stainless steel powder with an average particle size of 8 μm and Al powder with an average particle size of 15 μm. The content of Al powder accounts for 0.8% of the total amount of the matrix material. figure 1 and figure 2 SEM images of HK30 stainless steel powder and Al powder respectively;

[0048] B. Preparation of binder: by mass percentage, take 75% of paraffin wax (PW), 17% of polyethylene (PE), and 8% of stearic acid (SA), and mix them in a mixer for 4 hours at a temperature of 120°C. binder;

[0049] C. Preparation of feeding material: mixing and granulating the binder and the base material according to the volume ratio of 43%:57% to make the feeding material. The mixing temperature is 120°C, and the speed of the mixer is 85r / min. The time is 4h;

[0050] D. Injection mol...

Embodiment 2

[0054] A kind of preparation method of turbine blade for high-performance gasoline engine, its process is as follows:

[0055] A. Raw material preparation: the matrix material is mixed with HK30 stainless steel powder with an average particle size of 8 μm and Al powder with an average particle size of 15 μm, and the content of Al powder accounts for 1% of the total amount of the matrix material. figure 1 and figure 2 SEM images of HK30 stainless steel powder and Al powder respectively;

[0056] B. Preparation of binder: by mass percentage, take 80% of paraffin wax (PW), 15% of polyethylene (PE), and 5% of stearic acid (SA), and mix them in a mixer for 2 hours at a temperature of 150°C. binder;

[0057] C. Preparation of feeding material: mixing and granulating the binder and base material according to the volume ratio of 45%:55% to make feeding material. The mixing temperature is 150°C, and the speed of the mixer is 90r / min. The time is 2h;

[0058] D. Injection molding: ...

Embodiment 3

[0062] A kind of preparation method of turbine blade for high-performance gasoline engine, its process is as follows:

[0063] A. Raw material preparation: the matrix material is mixed with HK30 stainless steel powder with an average particle size of 8 μm and Al powder with an average particle size of 15 μm. The content of Al powder accounts for 1.2% of the total amount of the matrix material. figure 1 and figure 2 SEM images of HK30 stainless steel powder and Al powder respectively;

[0064] B. Preparation of binder: according to the mass percentage, take 85% of paraffin wax (PW), 13% of polyethylene (PE), and 2% of stearic acid (SA), and mix them in a mixer for 1 hour at a temperature of 180°C. binder;

[0065] C. Preparation of feeding material: mixing and granulating the binder and base material according to the volume ratio of 40%:60% to make feeding material. The mixing temperature is 180°C, and the speed of the mixer is 100r / min. The time is 1h;

[0066] D. Injecti...

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Abstract

The invention discloses a turbine blade for a high-performance gasoline engine, and a preparation method thereof. The preparation method comprises the following steps of uniformly mixing HK30 stainless steel powder and Al powder to obtain base materials, mixing and granulating the base materials and binders to obtain a uniform feed; then, injecting the feed into a mold cavity by using an injection molding technology to obtain a product green body; and removing the binders in the green body through solvent degreasing and thermal degreasing processes, and finally sintering and densifying the green body in a plasma sintering furnace to obtain the turbine blade product for the gasoline engine. Compared with the prior art, the preparation method has the advantages of being excellent in comprehensive performance, high in production efficiency, easy achievement of batch production and the like through combination of a Ni3Al dispersion strengthening technology and a spark plasma sintering technology, and the requirements of the turbine blade for the high-performance gasoline engine can be met; and the preparation method is suitable for preparing HK30-based turbine blade products.

Description

technical field [0001] The invention belongs to the technical field of turbine blade preparation, and in particular relates to a turbine blade for a high-performance gasoline engine and a preparation method thereof. Background technique [0002] The turbocharger can comprehensively improve the overall performance of the engine such as power, economy and emission indicators, inject strong power into the engine, and better meet the requirements of the new Euro III and Euro IV emission standards. The blade is an extremely important part in the turbocharger turbine drive assembly, and its quality directly determines the performance of the turbocharger. The centrifugal force generated by the high-speed rotation of the engine and the high-temperature working conditions make the turbine blades bear large tensile and thermal stresses. Therefore, the turbocharger blades must have sufficient yield strength, tensile strength and high temperature creep resistance. High temperature oxid...

Claims

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Application Information

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IPC IPC(8): B22F3/22B22F3/105B22F3/10B22F5/04C22C33/02C22C38/02C22C38/04C22C38/06C22C38/34C22C38/44C22C38/48C22C30/00F01D5/28F02B37/00
CPCB22F3/225B22F3/105B22F3/1025B22F5/04C22C33/0285C22C38/48C22C38/44C22C38/002C22C38/02C22C38/34C22C38/04C22C38/06C22C30/00F02B37/00F01D5/282Y02T10/12
Inventor 余勇李益民王霄何浩胡幼华
Owner 湖南英捷高科技有限责任公司
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