The invention relates to the technical field of preparation of carbonized strips, in particular to a method for preparing a pantograph carbon sliding strip material from copper-coated graphite powder.Asphalt coke serves as an aggregate, powder comprises the copper-coated graphite powder, silicon carbide, copper, nano carbon powder and special graphite powder, a binder is modified coal pitch, andliquid copper serves as an impregnating agent. By adding the copper-coated graphite powder, the silicon carbide, the copper, the nano-carbon powder, the special graphite powder and the like into the raw asphalt coke, the materials are mixed with other materials in raw materials, so that the mechanical strength of a finished carbon slider can be supplemented, and the finished carbon slider is not easy to break or crack during operation. The preparation process comprises the steps that the raw materials are ground, and then compression molding, copper dipping and final sintering and carbonizingare carried out, so that the density and strength of the carbon sliding strip material can be improved. The bulk density of the material is smaller than or equal to 4.0 g/ cm<3>, flexural strength islarger than or equal to 150, the compressive strength is larger than or equal to 250, the impact toughness larger than or equal to 0.3 J/cm<2>, the resistivity at 20 DEG C is smaller than or equal to6 microhm.m, and the Rockwell hardness (HBS) is smaller than or equal to 110.
本发明涉及碳化条制备技术领域,更具体而言,涉及一种利用铜包石墨粉制备受电弓碳滑条材料的方法,骨料沥青焦;粉料铜包石墨粉、碳化硅、铜、纳米碳粉、特种石墨粉;粘结剂为改质煤沥青;浸渍剂为液态铜。通过在原料沥青焦中加入铜包石墨粉、碳化硅、铜、纳米碳粉、特种石墨粉等,与原料中的其他材料相融合,可以补充成品碳滑板的机械强度,使其在运行中不易折断和破裂;其制备工艺是,首先对原料进行研磨,再通过模压成型、浸铜工艺、最后烧结炭化处理,可以增加碳滑条材料的密度和强度。其体积密度≤4.0g/cm、抗折强度≥150、抗压强度≥250、冲击韧性≥0.3J/cm、20℃电阻率≤6µΩ·m、洛氏硬度(HBS)≤110。
Method for preparing pantograph carbon sliding strip material from copper-coated graphite powder
一种利用铜包石墨粉制备受电弓碳滑条材料的方法
2020-06-05
Patent
Electronic Resource
Chinese
IPC: | B22F Verarbeiten von Metallpulver , WORKING METALLIC POWDER / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / C25D Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen , PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS |
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