Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Simulation-based parameter optimizing method for precise casting process of single crystal turbine blade

A technology of process parameter optimization and turbine blades, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of poor optimization effect and achieve the effect of improving the optimization effect

Inactive Publication Date: 2012-12-12
NORTHWESTERN POLYTECHNICAL UNIV
View PDF3 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages of poor optimization effect of existing single crystal turbine blade precision casting process parameter optimization methods, the present invention provides a simulation-based single crystal turbine blade precision casting process parameter optimization method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simulation-based parameter optimizing method for precise casting process of single crystal turbine blade
  • Simulation-based parameter optimizing method for precise casting process of single crystal turbine blade
  • Simulation-based parameter optimizing method for precise casting process of single crystal turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The following examples refer to Figure 1-7 .

[0034] Step 1: Use a certain type of turbine power blade, the main parameters of which are blade body length 106.10mm, maximum chord length 56.21mm, maximum inscribed circle radius 5.7mm, leading edge radius 4.12mm, and trailing edge radius 1.25mm. The blade is made of the second generation single crystal superalloy DD6, and the mold shell is made of silica sand. According to casting feeding theory and actual production experience, the blade casting process and gating system are designed for power blades, using top injection, 2 pieces in a set.

[0035] Step 2: Use commercial finite element pre-processing software Hypermesh (product of Altair, USA) to divide the model into units based on non-uniform mesh division technology. First, import the gating system model into Hypermesh and discretize it into tetrahedral units. The quality meets the quality requirements of general enterprise finite element analysis. In this embodi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a simulation-based parameter optimizing method for a precise casting process of a single crystal turbine blade. According to the simulation-based parameter optimizing method, the technical problem of poor optimization effect of the precise casting process of the single crystal turbine blade is solved. The technical scheme provided by the invention is that the simulation-based parameter optimizing method comprises the following steps of: designing a casting system model of the single crystal turbine blade; carrying out unit division on the casting system model by adopting a finite element analysis method; obtaining a precise casting process parameter and a reasonable parameter change range which have greater influence on the dimensional precision of a precise casting blade molded surface by extracting and identifying precise casting process parameters through a single factor process test; carrying out numerical simulation on the casting process according to the established test table; estimating the deformation condition of a casting relative to the designed model by processing and analyzing the data; and gradually narrowing the search range of the parameter optimization of the precise casting process by establishing a BP (Back propagation) neural network model and adopting a small-step searching method. The optimization effect of the parameter optimization method for the precise casting process of the single crystal turbine blade is improved.

Description

technical field [0001] The present invention relates to a single crystal turbine blade precision casting process parameter optimization method, in particular to a single crystal turbine blade precision casting process parameter optimization method based on simulation. Background technique [0002] The complex hollow turbine blade is the core technology of the high thrust-to-weight ratio engine, the core component of the engine, and the easily broken and failed parts. Its performance level, especially its ability to withstand high temperatures, is an important symbol of the advanced level of a type of engine, and in a certain sense, it is also a significant symbol of the level of a country's aviation industry. Due to its complex internal cooling structure, high requirements for aerodynamic shape and dimensional accuracy, and long-term service under conditions of strong thermal shock and complex cyclic thermal stress, the structural design and manufacturing technology of hollo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50G06N3/02
Inventor 傅将威陈晨卜昆周丽敏乔燕董一巍邱飞高斌王鲁丁肖艺
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com