高铁里程碑模具制作说明

高铁里程碑模具

河北保定高铁里程碑模具的作业条件大多非常恶劣，有些常常接受较大的冲击负荷，然后致使脆性开裂。为避免模具零件在作业时俄然脆断，模具要具有较高的强度和耐性。高铁里程碑模具的耐性首要取决于资料的含碳量、晶粒度及安排状况。在作业过程中，在循环应力的长时间效果下，通常致使疲惫开裂。模具在作业过程中处于重复加热和冷却的状况，使型腔外表受拉、压力变应力的效果，致使外表龟裂和脱落，增大冲突力，阻止塑性变形，下降了尺度精度，然后致使模具失效。冷热疲惫是热作模具失效的首要方式之一，所以这类高铁里程碑模具应具有较高的耐冷热疲惫功能。高铁里程碑模具   公路里程碑模具   里程碑模具The working conditions of the milestone dies of Baoding high speed railway in Hebei Province are very bad, some of them often accept large impact load, and then cause brittle cracking. In order to avoid sudden brittle fracture of die parts in operation, the mold should have high strength and endurance. The endurance of high-speed rail milestone mould mainly depends on the carbon content, grain size and arrangement of the data. In the process of operation, fatigue cracking usually occurs under the long-term effect of cyclic stress. The die is in the condition of repeated heating and cooling in the process of operation, which makes the surface of the cavity under tension and pressure change stress, resulting in surface cracking and falling off, increasing the conflict force, preventing plastic deformation, reducing the scale accuracy, and then causing the die failure. Cold and hot fatigue is one of the primary failure modes of hot working die, so this kind of high-speed rail milestone mould should have high resistance to cold and hot fatigue. Milestone mould for high speed railway milestone mould for highway milestone mould