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目前,先进的国产3枕连续式捣固稳定车在中国铁建昆明中铁集团公司下线,与之相配套使用的铁路路基捣固镐头,是消耗量最大的易损易耗工具。分析了捣镐的工作原理及其2种失效形式(磨损与断裂),对捣镐进行了改进研究。在硬质合金牌号选择、焊料与焊剂的选用、焊接工艺技术、焊接设备选型等4个方面,进行了创新和改进。所研发的新型捣固镐头,其机械性能和质量稳定性全面提升,使用寿命大幅度提高。
At present, the advanced home-made 3-pound continuous tamping stable car is off-line with China Railway Construction Kunming China Railway Group Corporation. The supporting railroad tamping pickaxe is the most consumable and consumable tool. The working principle of the tam-pok and the two kinds of failure modes (wear and fracture) were analyzed, and the tam-pok was improved. In the choice of carbide grades, solder and flux selection, welding technology, welding equipment selection and other four aspects of innovation and improvement. The new tamping pickaxe developed, its mechanical properties and quality and stability of the overall upgrade, a substantial increase in service life.