摘要
打结器是方草捆捡拾压捆机上的关键部件,为了分析捆绳打结嘴的材质及性能,对捆绳打结嘴进行了金相组织分析,并进行了硬度试验和拉力试验。为了验证材料具体成分含量,又进行了光谱分析。通过试验发现:打结嘴的材料成分为15Cr,外表面的硬度为HRC46,芯部硬度为HRC25,热处理工艺采用了调质处理和表面镀铬。为了预测打结嘴的疲劳寿命,采用局部应力应变法对打结嘴进行了分析运算。
The twine knotter is the key assembly of the square baler. For analyzing material and capability for knotting hooker , the paper made some tests including metallography analysis,hardness test and tension test. For knowing the particular components, we made the action spectrum analysis. The conclusion is that the component of knotting hooker is 15Cr, the hardness outside is HRC46 and inside is HRC25, and the heat treatment is thermal refining and chromium plating. The paper uses localized stress method to definite the hook＇ s fatigue life.
出处
《农机化研究》
北大核心
2011年第4期126-129,共4页
Journal of Agricultural Mechanization Research
基金
中央级公益性科研院所基本科研业务费专项资金(中国农业科学院草原研究所)资助项目(2007-2010)
关键词
打结器
打结嘴
金相组织
硬度试验
拉力试验
疲劳寿命分析
twine knotter
knotting hooker
metallography analysis
hardness test
tension test
fatigue life analysis
