Preparation of Cast Iron-hard Alloy Bimetal

Lu Dehong  Zhou Rong

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Preparation of Cast Iron-hard Alloy Bimetal
Issue 6, Pages: 51-52(2002)
Published： 2002 ，
DOI：

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[1]卢德宏,周荣,韩豫刚,,,,,,,,,,朱凌云.铸铁-硬质合金的复合铸造[J].特种铸造及有色合金,2002(06):51-52+0.

Lu Dehong Zhou Rong. Preparation of Cast Iron-hard Alloy Bimetal. [J]. Special Casting & Nonferrous Alloys (6):51-52(2002)
[1]卢德宏,周荣,韩豫刚,,,,,,,,,,朱凌云.铸铁-硬质合金的复合铸造[J].特种铸造及有色合金,2002(06):51-52+0. DOI：

Lu Dehong Zhou Rong. Preparation of Cast Iron-hard Alloy Bimetal. [J]. Special Casting & Nonferrous Alloys (6):51-52(2002) DOI：

摘要

用砂型铸造法研制了铸铁硬质合金复合铸造工艺

铸件界面结合强度达到 75 7MPa。铸铁硬质合金界面区域由4层组成

依次为铸铁层、混合层、扩散层和硬质合金层。二者的冶金结合是通过铸铁液将硬质合金表层熔融

然后混合凝固获得的。断裂裂纹主要产生在界面区域的铸铁层内

Abstract

Cast iron-hard alloy bimetal was prepared in sand mould. The interface bonding strength of the bimetal casting reached to 757MPa. The interface area consists of cast iron layer

mixed layer

diffusion layer and hard alloy. Metallurgical bonding in interface occurred through the surface layer of hard alloy to be melted with molten iron and in turn the mixture solidified.. The crack mainly occurred in the cast iron layer of the interface area.