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对铜排合金中加入稀土提高电机整流子耐磨寿命进行了研究。实验室阶段合金在自制小型坩埚炉冶炼,炉温900℃时加入小块电解铜,1200℃左右铜液熔化,保温5～10分,用木炭或鲜木材脱氧,加入稀土,覆盖一层草木灰,立即浇铸到预热钢模中。然后按现行工艺,加工成所需尺寸。所加稀土为混合稀土金属,金属铈和金属镧三种,加入量在0.02—3%范围内。经多次试验,确定为0.1～0.15%较佳。为了使稀土烧损减至最小,试验了多种加入方
Addition of rare earth to the copper alloy to improve the commutator wear life of the motor was studied. Laboratory stage alloy smelting in a small homemade crucible furnace, furnace temperature 900 ℃ small pieces of electrolytic copper, copper melt around 1200 ℃, insulation 5 to 10 points, with charcoal or fresh wood deoxidation, adding rare earth, covered with a layer of ash, Immediately cast into the preheated steel mold. Then press the current technology, processed into the required size. The added rare earth is a mixed rare earth metal, cerium and lanthanum metal three, added in the range of 0.02-3%. After many tests, it is better to determine 0.1 ~ 0.15%. In order to minimize the loss of rare earths, a variety of additions were tested