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一、前言美国GE公司向我厂订购一批内燃机车车轮,如按GE公司要求应采用整体辗钢轮,轮轴装配用冷压工艺;而我厂采用ZG25Ⅱ铸造轮心,外套辗钢轮箍,轮轴组装采用热装方法。经协商,GE公司同意改用我厂的车轮结构和制造方法,但对轮轴组装提出以下要求:提高现有轮心材质硬度(不低于HB180),以确保轮轴装配吨位,达到105～155吨力和压吨曲线。
First, the foreword The United States GE company ordered a number of diesel locomotive wheels to our company, as required by the GE company should be used overall steel wheel, wheel assembly with cold pressure technology; and I plant ZG25 Ⅱ casting wheel center, outer sleeve steel wheel hoop, Wheel assembly using hot method. After consultation, GE Company agreed to use the wheel structure and manufacturing method of our factory, but made the following requirements on axle assembly: Raise the hardness of the existing wheel center material (not less than HB180) to ensure that the axle assembly tonnage will reach 105 to 155 tons Force and pressure ton curve.