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Metal material forged microstructure soft measurement method based on self-adaptive expert system

A technology of microstructure and metal materials, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that metal material forging microstructure cannot be measured online, and achieve the effect of accurate and fast soft measurement

Inactive Publication Date: 2017-05-31
CENT SOUTH UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to provide a soft measurement method for the forged microstructure of metal materials, which solves the problem that the forged microstructure of metal materials cannot be measured online

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Embodiment Construction

[0053] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0054] The present invention is a kind of metal material microstructure soft measuring method, and its flow chart is as follows figure 1 shown. The implementation details of the metal material microstructure soft-sensing method involved in the present invention are described in detail below, and the method includes:

[0055] Step 1: Establish an initial expert system based on historical forging process parameters (upper die speed and displacement, forging temperature) and metal material microstructure data (recrystallization fraction and recrystallization grain size), mainly including database, reasoning machine and learning machine;

[0056] The database is established based on historical forging process parameters (upper die speed and displacement, forging temperature) and microstructure data (recrystallization grain size and recrystalliz...

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Abstract

The invention provides a metal material forged microstructure soft measurement method based on a self-adaptive expert system. The metal material forged microstructure soft measurement method comprises the following steps of (1) building an initial expert system according to historic forging technological parameters and metal material microstructure data, wherein the initial expert system mainly comprises a database, an inference engine and a learning machine; (2) comparing actual forging technological parameters with technological parameters in the database, thus obtaining a technological parameter error vector; computing the technological parameter matching degree according to the inference engine; (3) estimating a current microstructure by utilizing the technological parameter matching degree and the microstructure data in the database; (4) carrying out self-learning on the expert system, and storing new technological parameters and the microstructure data in the database if the estimated current microstructure is a new microstructure; ending if the estimated current microstructure is not the new microstructure. The metal material forged microstructure soft measurement method based on the self-adaptive expert system, provided by the invention, is capable of accurately measuring a metal material forged microstructure online, and the technical problem that the metal material forged microstructure is difficult to measure online is solved.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of metal material processing engineering, and relates to a soft measurement method for metal material forging microstructure based on an adaptive expert system. [0003] Background technique: [0004] Because metal materials such as nickel-based superalloys, aluminum alloys, and magnesium alloys have excellent mechanical properties and other service properties, they have been widely used in the fields of aerospace, aviation, navigation, and nuclear energy. The microstructure (recrystallization grain size and recrystallization fraction) of metal materials is the key factor affecting its various properties. How to accurately measure the microstructure of metal materials during processing is an urgent problem to be solved. [0005] Studies have shown that the microstructure evolution of metal materials during the forging process is extremely complex, and is significantly affected by the comprehensive ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/00
Inventor 蔺永诚谌东东陈明松
Owner CENT SOUTH UNIV
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