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1 前言Φ98×22mm 轴头料是为陕西汽车齿轮厂开发研制的。由于钢管的壁厚同外径之比达22.45%,属特厚管。在Φ100mm 无缝自动轧管机组上生产难度大:一是规格是非标准的;二是特厚管,偏心度较难控制;三是国内Φ100mm 机组上从未生产过。这给工艺制定和生产组织增加了难度。经过试验和批量生产,至1994年共生产505t,质量合格,理化指标优于国外同类产品,用户使用满意,达到国内先进水平。
1 Introduction Φ98 × 22mm shaft material for the Shaanxi Automobile Gear Factory developed. As the pipe wall thickness with the outer diameter ratio of 22.45%, is a very thick tube. In the Φ100mm seamless automatic rolling mill production difficult: First, the specification is non-standard; Second, special thick tube, eccentricity difficult to control; Third, the domestic Φ100mm unit has never been produced. This adds difficulty to the process formulation and production organization. After testing and mass production, a total of 505t was produced by 1994, with qualified quality and better physical and chemical indexes than similar foreign products. The users are satisfied with the application and reach the advanced domestic level.