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Optimization design method for preforming technology of turbine disk forgings

An optimized design and pre-forming technology, applied in the field of forging, can solve the problems of deviation from optimization and difficult pre-forging

Inactive Publication Date: 2017-04-26
CENT SOUTH UNIV
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Problems solved by technology

However, the shape and size of the pre-forging are mainly indirectly guaranteed by the pre-forging die. If it is not forging, it is difficult to ensure that the shape and size of the pre-forging will not deviate, which will lead to deviation from the optimal goal.

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  • Optimization design method for preforming technology of turbine disk forgings
  • Optimization design method for preforming technology of turbine disk forgings
  • Optimization design method for preforming technology of turbine disk forgings

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The present invention is an optimal design method for the preforming process of a turbine disc forging. The following takes the optimal design of the preforming process for a high temperature alloy turbine disc forging as an example to introduce in detail the implementation details of the optimized method for the preforming process of a turbine disc forging designed in the present invention. , whose methods include:

[0026] Step 1: Design the geometry of the pre-forging, parameterize its size, and use the Plackett-Burmans experimental design method to determine the key influencing parameters;

[0027] Schematic diagram of the cross-section of the superalloy turbine disc pre-forging figure 1 As shown, according to the general shape of the pre-forging, the cross-sectional schematic diagram of the pre-forging die is designed as follows ...

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Abstract

The invention discloses an optimization design method for preforming of turbine disk forgings. The method comprises the steps that 1, the geometrical shape of a preforming die is designed, the size of the preforming die is parameterized, and a Plackett-Burmans (PB) experiment design method is utilized to determine key influence parameters; 2, the key influence parameters determined in the step 1 are used as optimization parameters, and a general rotary combination design method is adopted to determine experiment schemes; 3, a finite element method is adopted to perform simulation on all the schemes to obtain an experiment result, a second-order response surface model is utilized to fit out a response surface, optimizing is performed based on an optimization objective function for optimizing to find out an optimal parameter combination. Through the method, the preforging forming technology of turbine disks can be effectively optimized, and it is guaranteed that deformation of the forgings and uniformity of organization are optimal.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of forging, and relates to an optimal design method of a turbine disk forging preforming process [0003] Background technique: [0004] The turbine disk is the core component of the aero-engine, and it is also the part with the most extreme working environment among the four types of hot-end components. Its working temperature is high, the change is large, and the stress state is very complicated, so it puts forward high requirements on the performance of the turbine disk. , which leads to the manufacturing technology of the turbine disk has always been a difficult problem in the field of aero-engines in my country. [0005] Due to the complex structure of the turbine disk, it is a typical difficult-to-form part, and the manufacturing difficulty is relatively high. It is difficult to forge the blank into the shape of the final turbine disk in one process. Even if the mold can be filled, it is difficul...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 蔺永诚李阔阔陈明松
Owner CENT SOUTH UNIV
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