Making method of surface double-walled hollow turbine blade

A technology for turbine blades and a manufacturing method, applied in the field of rapid casting, can solve the problems of difficulty in meeting new blade manufacturing requirements, difficulty in realizing hollow blade manufacturing, poor temperature bearing capacity of blades, etc., and achieves simple mold, high forming accuracy, and hole structure defects. less effect

Active Publication Date: 2015-09-16
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is difficult to realize the manufacture of hollow blades with staggered inner cavity structure space
With the increasing complexity of blade structure design, traditional blade manufacturing methods are restricted by manufacturing technology, and it is difficult to meet the manufacturing requirements of new blades.
[0003] In order to solve the problem of poor temperature bearing capacity and low thermal intensity of blades, sweat cooling and laminate cooling technologies have been adopted abroad in recent ye

Method used

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  • Making method of surface double-walled hollow turbine blade
  • Making method of surface double-walled hollow turbine blade
  • Making method of surface double-walled hollow turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for manufacturing double-walled hollow turbine blades, comprising the following steps:

[0049] 1) Manufacture of resin negatives for double-walled hollow turbine blades

[0050] see figure 1 , the figure shows the resin prototype part of the double-walled hollow turbine blade with tenons, in the figure, 1 is the impact hole, 2 is the double-walled cooling channel, 3 is the airfoil, and 4 is the tenon. see image 3 , which shows the outer walls of the resin mated to the resin prototype.

[0051] First, the resin negative model of the double-walled hollow turbine blade is designed based on 3D software. The negative model consists of the resin prototype containing the impingement hole, the resin outer wall corresponding to the double-walled cooling channel, and the resin shell. The negative model is discretized by layering software to generate two-dimensional slices, and the specific data of each layer of the model is obtained, and then the data is imported in...

Embodiment 2

[0075] A method for manufacturing double-walled hollow turbine blades, comprising the following steps:

[0076] 1) Manufacture of resin negatives for double-walled hollow turbine blades

[0077] First, the resin negative model of the double-walled hollow turbine blade is designed based on 3D software. The negative model consists of the resin prototype containing the impingement hole, the resin outer wall corresponding to the double-walled cooling channel, and the resin shell. The negative model is discretized by layering software to generate two-dimensional slices, and the specific data of each layer of the model is obtained, and then the data is imported into the photocuring molding machine in STL format, and the photosensitive resin is cured and molded by laser irradiation, and manufactured separately. Resin negatives for individual parts of double walled hollow turbine blades. After the manufacture is completed, use alcohol to remove excess liquid resin on the surface, and...

Embodiment 3

[0096] A method for manufacturing double-walled hollow turbine blades, comprising the following steps:

[0097] 1) Manufacture of resin negatives for double-walled hollow turbine blades

[0098] Firstly, the resin negative shape of the double-walled hollow turbine blade is designed based on 3D software. The negative shape is composed of the resin prototype including the impingement hole, the resin outer wall corresponding to the double-walled cooling channel, and the resin shell. The negative model is discretized by layering software to generate two-dimensional slices, and the specific data of each layer of the model is obtained, and then the data is imported into the photocuring molding machine in STL format, and the photosensitive resin is cured and molded by laser irradiation, and manufactured separately. Resin negatives for individual parts of double walled hollow turbine blades. After the manufacture is completed, use alcohol to remove excess liquid resin on the surface,...

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Abstract

The invention discloses a making method of a surface double-walled hollow turbine blade, and belongs to the technical field of rapid casting. The method comprises the following steps: designing and preparing negative resin of a double-walled hollow turbine blade containing impact openings, and separately preparing a resin outer wall corresponding to a double-walled cooling channel, and resin prototype; making the ceramic core of the double-walled cooling channel through a compression molding technology, inlaying the ceramic core in the resin prototype, and respectively assembling the resin prototype with the outer wall and the resin shell to make resin prototype containing the ceramic core; making a ceramic mold blank containing the ceramic core through a gel injection molding technology, freeze-drying, carrying out degreasing pre-burning, and post-processing a ceramic mold; and making a turbine blade through a casting technology, and carrying out laser or electric spark processing to obtain gas film holes in order to make the cast blade containing the cooling channel, the gas film holes and the impact openings. The method is mainly used for making the double-walled hollow turbine blade containing the impact openings.

Description

technical field [0001] The invention belongs to the technical field of rapid casting, and in particular relates to a manufacturing method for double-walled hollow turbine blades. Background technique [0002] Turbine blade is a key part of power equipment, and it is listed as the first key part because it is the part with the highest temperature, the most complex stress and the worst environment. At present, the main manufacturing process of turbine blades is investment casting, and its technological process mainly includes the design and manufacture of core molds, pressed cores, design and manufacture of wax molds, wax injection for assembly, slurry coating, shell drying, Dewaxing, sintering, pouring metal, core removal, drilling and other links. The disadvantage of this method is that it is difficult to realize the manufacture of hollow blades with staggered inner cavity structure space. As the blade structure design becomes more and more complex, the traditional blade m...

Claims

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Application Information

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IPC IPC(8): B22C9/02B22C9/22
Inventor 鲁中良冯朋帅苗恺张航李涤尘
Owner XI AN JIAOTONG UNIV
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