1) rail steel U71Mn
U71Mn重轨钢
3) U71Mn rail steel
U71Mn钢轨钢
4) U71Mn rail
U71Mn钢轨
1.
The specimens of PD3 rail and U71Mn rail with oblique cracks were analyzed by examinations including chemical composition,mechanical properties and.
结果表明:由于轮轨间摩擦力的反复作用,导致疲劳微裂纹的萌生与扩展,裂纹在钢轨表面与行车方向成一定夹角,沿着钢轨塑性流变方向在钢轨内部朝斜向下的方向扩展;PD3钢轨的强度性能优于U71Mn钢轨,但U71Mn钢轨更适合于高速铁路铺设使用。
2.
In order to solve the traditional bainitic welding rod build-up welding rail when preheating before welding and heat treatment after welding, U71Mn rail was directly welding repaired using bainitic welding rod.
为了解决传统焊条在堆焊铁路钢轨时焊前必须预热、焊后进行热处理等不足,本文采用自制的贝氏体焊条对U71Mn钢轨进行直接堆焊修复,分析研究了在不同的电流下直接堆焊钢轨其组织、性能的变化。
5) steel track(U71Mn)
钢轨(U71Mn)
6) U71Mn steel
U71Mn钢
1.
Determination and analysis of the expand rate da/dN of fatique cracks in U71Mn steel;
U71Mn钢疲劳裂纹扩展速率da/dN的测定与分析
补充资料：攀枝花钢铁(集团)公司轨梁厂重轨在冷床上冷却
攀枝花钢铁(集团)公司轨梁厂重轨在冷床上冷却
攀枝花钢铁(集团)公司轨梁厂重轨在冷床上冷却
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条