The invention discloses a ceramic-reinforced contact line and a preparation method thereof, and belongs to the technical field of railway catenaries, and the preparation method comprises the following steps: mixing Cu powder and Ag powder to obtain copper-silver alloy powder, then mixing the copper-silver alloy powder with Al2O3 powder and Mg2O powder to obtain synthetic powder, and sequentially carrying out isostatic pressing sintering, hot forging, pushing, surface treatment, rolling and drawing to obtain the ceramic-reinforced contact line. By introducing a ceramic phase into an existing contact line product alloy series, the strength, hardness, electrical performance and wear resistance of a contact line material at the present stage are greatly improved while the conductivity of the material is reduced as much as possible, the maintenance cost of a contact network is reduced, and meanwhile, a new material choice is provided for speed increase of rail transit; the original processing technology is broken, and a brand new alloy series is provided. The strength of the contact wire can reach 580 MPa or above, the conductivity is controlled to be 80% IACS or above, the surface hardness can reach 85 HB or above, abrasion is reduced by 50% or above, the service life of the contact wire is prolonged by two times or above, and the service life of the contact wire is far beyond that of other types of contact wire products.
本发明公开了一种陶瓷强化的接触线及其制备方法,属于铁路接触网技术领域,包括:将Cu粉末和Ag粉末混合,得到铜银合金粉末,再与Al2O3粉末和Mg2O粉末混合,得到合成粉末,依次经过等静压烧结、热锻、推挤、表面处理、轧制和拉拔,得到陶瓷强化的接触线。通过将陶瓷相引入到现有的接触线产品合金系列中,在尽可能降低材料导电率的同时,大大提升了现阶段接触线材料的强度、硬度、电气性能及耐磨性能,降低了接触网维护成本,同时为轨道交通提速提供了新的材料选择,打破了原有的加工工艺,提供了全新的合金系列。其强度可达580MPa以上,导电率控制在80%IACS以上,其表面硬度可达85HB以上,磨耗降低50%以上,提升接触线使用寿命2倍以上,远超其他类型接触线产品。
Ceramic reinforced contact line and preparation method thereof
一种陶瓷强化的接触线及其制备方法
13.12.2024
Patent
Elektronische Ressource
Chinesisch
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