露天液压凿岩钻车用MF钎杆的失效分析
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摘要
通过对常规使用的露天液压钻车MF钎杆的内外螺纹失效样和杆体失效样进行分析的结果表明,钎杆使用过程中内外螺纹表面温度升高,螺纹表面容易形成烧蚀面和熔蚀坑,以及渗层组织网状碳化物,是造成钎杆螺纹失效的因素。其次,杆体原材料表面缺陷和使用造成的机械损伤,是导致杆体失效的原因。因此,对MF钎杆的典型失效部位分析,为生产工艺的改进提供依据,使得MF钎杆具有良好的生产质量,提高综合机械性能,同时钻车操作人员规范使用钎杆,才能更好的发挥出钎杆的性能,进而获得高的使用寿命。
After the analysis of the sample of failed male & female threads and the sample of failed drill rod body typically used on the open-pit hydraulic drill rig, the results show high temperature of male & female thread surfaces,easily produced burned areas and burned pits on thread surfaces and network carbide in layer microstructure contribute the failure of threads on the drill rod. Additionally, surface defects of rod body material and mechanical damages duo to the use are also the reasons behind the rod body failure. Therefore, the analysis of typical failed parts of MF drill rod provides the basis for improving the production process. As a result, the MF drill rod offers superior quality and improved overall mechanical properties, and the operator of the drill rig can properly use the drill rod, give full play to its performance and increase its service life.
After the analysis of the sample of failed male & female threads and the sample of failed drill rod body typically used on the open-pit hydraulic drill rig, the results show high temperature of male & female thread surfaces,easily produced burned areas and burned pits on thread surfaces and network carbide in layer microstructure contribute the failure of threads on the drill rod. Additionally, surface defects of rod body material and mechanical damages duo to the use are also the reasons behind the rod body failure. Therefore, the analysis of typical failed parts of MF drill rod provides the basis for improving the production process. As a result, the MF drill rod offers superior quality and improved overall mechanical properties, and the operator of the drill rig can properly use the drill rod, give full play to its performance and increase its service life.
引文
[1]胡铭,董鑫业.瑞典阿特拉斯公司凿岩钻车与凿岩机械[C].第十五届全国钎钢钎具年会论文集,2010:260-268.
[2]徐斌,唐文龙.采矿钻车快换钎杆凿岩试验与失效分析[J].矿山机械,2010,38(24):1-5.
[3]唐文龙,李永金.液压掘进钻车钎杆的研制与失效分析[C].2011年全国钎钢钎具会议论文集:128-137.
[2]徐斌,唐文龙.采矿钻车快换钎杆凿岩试验与失效分析[J].矿山机械,2010,38(24):1-5.
[3]唐文龙,李永金.液压掘进钻车钎杆的研制与失效分析[C].2011年全国钎钢钎具会议论文集:128-137.