A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for manufacturing passenger dedicated line railway turnout sliding platen with high-speed laser cladding surface
The invention discloses a method for manufacturing a passenger dedicated line railway turnout sliding platen with a high-speed laser cladding surface. The method comprises the following steps of setting the focus point of a laser beam at 1.5-2.5mm above the upper surface of the platen, and transporting Fe-based alloy powder to the focus point; first heating the surface of the platen by the laser beam to form a molten pool; making the Fe-based alloy powder heated by the laser beam form a molten or semi-molten Fe-based alloy powder liquid and then drop into the molten pool, and then using the heat conduction effect of the platen for rapid cooling to form a metallurgical combination of the coating and the platen metal; and after subsequent processing, manufacturing a turnout sliding platen with rust and wear resistance on the surface. The method has the advantages of avoiding the defect that the melting state is not uniform and some parts cannot form a metallurgical bond with the coatingwhen laser cladding after the powder alloy is placed on the surface of the substrate surface of the platen, having high efficiency, small heat input and no deformation of the substrate, and being ableto meet the needs of large-scale production.
本发明公开一种表面高速激光熔覆客运专线铁路道岔滑动类台板制造方法，将激光束的聚焦点设置于台板上表面上方的1.5‑2.5mm，将Fe基合金粉末经输送装置输送至聚焦点处；激光束首先加热台板表面形成熔池；经激光束加热的Fe基合金粉末形成熔融或半熔融状态的Fe基合金粉末的液体后滴落至所述熔池内，然后利用台板的热传导作用快速冷却，形成涂层与台板金属的冶金结合；再经后续加工，制成表面具有防锈耐磨性能的道岔滑动类台板；本发明的优点是：避免了在台板基体表面放置粉末合金后再激光熔覆时，熔融状态不均匀，个别地方与涂层无法形成冶金结合的缺陷；熔覆工作效率高，热输入量小，基体无形变，可满足大规模生产需要。
Method for manufacturing passenger dedicated line railway turnout sliding platen with high-speed laser cladding surface
The invention discloses a method for manufacturing a passenger dedicated line railway turnout sliding platen with a high-speed laser cladding surface. The method comprises the following steps of setting the focus point of a laser beam at 1.5-2.5mm above the upper surface of the platen, and transporting Fe-based alloy powder to the focus point; first heating the surface of the platen by the laser beam to form a molten pool; making the Fe-based alloy powder heated by the laser beam form a molten or semi-molten Fe-based alloy powder liquid and then drop into the molten pool, and then using the heat conduction effect of the platen for rapid cooling to form a metallurgical combination of the coating and the platen metal; and after subsequent processing, manufacturing a turnout sliding platen with rust and wear resistance on the surface. The method has the advantages of avoiding the defect that the melting state is not uniform and some parts cannot form a metallurgical bond with the coatingwhen laser cladding after the powder alloy is placed on the surface of the substrate surface of the platen, having high efficiency, small heat input and no deformation of the substrate, and being ableto meet the needs of large-scale production.
本发明公开一种表面高速激光熔覆客运专线铁路道岔滑动类台板制造方法，将激光束的聚焦点设置于台板上表面上方的1.5‑2.5mm，将Fe基合金粉末经输送装置输送至聚焦点处；激光束首先加热台板表面形成熔池；经激光束加热的Fe基合金粉末形成熔融或半熔融状态的Fe基合金粉末的液体后滴落至所述熔池内，然后利用台板的热传导作用快速冷却，形成涂层与台板金属的冶金结合；再经后续加工，制成表面具有防锈耐磨性能的道岔滑动类台板；本发明的优点是：避免了在台板基体表面放置粉末合金后再激光熔覆时，熔融状态不均匀，个别地方与涂层无法形成冶金结合的缺陷；熔覆工作效率高，热输入量小，基体无形变，可满足大规模生产需要。
Method for manufacturing passenger dedicated line railway turnout sliding platen with high-speed laser cladding surface
一种表面高速激光熔覆客运专线铁路道岔滑动类台板制造方法
LI QINGJIE (author) / MA JINZHONG (author)
2020-11-20
Patent
Electronic Resource
Chinese
Research on turnout technology applied on passenger-dedicated line
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