摘要
对 V型导轨在磨削后出现的网状裂纹进行宏观和微观检验 ,分析裂纹产生的原因。结果表明 ,淬火加热温度偏高或加热时间过长 ,形成粗大的过热组织 ,即粗大针状马氏体和过热“带状组织”,导致后序磨削产生网状裂纹。
A macrographic examination and micrographic observation were made on network cracks of the V shape guideway to be ground.The cause of network cracks was analyzed .The results show that the overheated structures, that is,the coarse acicular martensite and overheated banded structures, because heating temperature is too high or holding time is too long, lead to network cracks after grinding.
出处
《热加工工艺》
CSCD
北大核心
2004年第9期52-53,共2页
Hot Working Technology
关键词
V型导轨
网状裂纹
过热组织
过热“带壮组织”
V-shape guideway
network crack
overheated structure
overheated banded structures
