Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

Wei Liu; Zhen Yuan Jia; Ming Xing Li; Yang Liu; Yang Zhang

doi:10.4028/www.scientific.net/AMM.421.453

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 421Online Measurement for the Thermal Geometric...

Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings

Abstract:

t is difficult to obtain high measurement accuracy in online detecting the thermal geometric parameters of hot large forgings, based on machine vision method. In this paper, firstly, a spectrum selective image acquisition method for high-temperature components is proposed, which can successfully reduced the effect of high temperature on image quality. Then, a measurement method based on the coding feature lines for geometric parameters of hot large forgings is employed, which can effectively improve the extraction efficiency of geometry characteristic information of high-temperature components. Experiments on the forging workshop show that measurement accuracy of diameters for cylindrical forging reaches 0.2% and the measurement time is 2.25 seconds; measurement accuracy of lengths for cuboid forging reaches 0.48% and the measurement time is 5.9 seconds. The experimental results have verified the feasibility and high efficiency of the proposed method for measuring the geometric parameters of hot large forgings.

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Periodical:

Applied Mechanics and Materials (Volume 421)

Pages:

453-458

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.421.453

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Online since:

September 2013

Authors:

Wei Liu, Zhen Yuan Jia, Ming Xing Li, Yang Liu, Yang Zhang

Keywords:

Geometric Parameter, Hot Large Forging, Light Stripes, Machine Vision

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