The Loose Characteristics in Copper Alloy Ingots by Ultrasonic Flaw Detection and the Improvement of Smelting-Casting

Li Xuehao; Bian Jinqiang; Liu Pu

doi:10.15980/j.tzzz.2015.05.028

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The Loose Characteristics in Copper Alloy Ingots by Ultrasonic Flaw Detection and the Improvement of Smelting-Casting
Vol. 35, Issue 5, Pages: 553-556(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.028

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[1]李学浩,卞金强,刘璞.铜合金锻件中缩松超声探伤特征及熔铸工艺改进[J].特种铸造及有色合金,2015,35(05):553-556.

Li Xuehao, Bian Jinqiang, Liu Pu. The Loose Characteristics in Copper Alloy Ingots by Ultrasonic Flaw Detection and the Improvement of Smelting-Casting. [J]. Special Casting & Nonferrous Alloys 35(5):553-556(2015)
[1]李学浩,卞金强,刘璞.铜合金锻件中缩松超声探伤特征及熔铸工艺改进[J].特种铸造及有色合金,2015,35(05):553-556. DOI： 10.15980/j.tzzz.2015.05.028.

Li Xuehao, Bian Jinqiang, Liu Pu. The Loose Characteristics in Copper Alloy Ingots by Ultrasonic Flaw Detection and the Improvement of Smelting-Casting. [J]. Special Casting & Nonferrous Alloys 35(5):553-556(2015) DOI： 10.15980/j.tzzz.2015.05.028.

摘要

采用超声波探伤和金相观察研究了铜合金锻件的组织。结果表明

锻件中易产生2种具有不同超声波波形特征和微观表现形式的缩松缺陷

分析了2种缩松产生的原因

并通过对熔铸工艺的改进

消除了铜合金锻件的缩松缺陷

大幅度提高了铜合金铸锭的成品率

为后续的超声波探伤确定缩松形式缺陷提供了依据。

Abstract

Microstructure of copper alloy ingot was analyzed by ultrasonic testing combined with metallographic observation.The results reveal that two kinds of shrinkage porosities easily occurs in the forging parts

and they demonstrate different ultrasonic waveform characteristics and microscopic form

which provides effective information to determine the shrinkage porosities for subsequent ultrasonic testing.By analyzing the origination of two kinds of shrinkage porosities

the defects in copper alloy ingot casting were eliminated by modifying casting process

and the yield rate of the copper alloy casting was improved greatly.