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在LD—60型冷轧管机上使用不同开口角的轧辊孔型轧管时,测定了轧制压力、芯棒轴向力以及所轧制钢管的壁厚不均度;在对实验数据分析研究的基础上,提出了孔型形状系数的概念,指出了最佳的孔型形状系数值在1.065～1.110之间。为提高轧辊孔型的加工精度并便于现场批量生产,根据国内外专家提出的关于孔型设计方法的新设想,本文导出了两种新的孔型设计计算公式,可供生产现场参考。
The rolling pressure, the axial force of the mandrel and the thickness of the rolled steel pipe were measured when using the roll hole rolling pipe with different opening angles on the LD-60 cold rolling mill. After analyzing the experimental data Based on this, the conception of hole form factor was proposed, and the best hole form factor value was found to be between 1.065 and 1.110. In order to improve the machining accuracy of roll pass and to facilitate on-site mass production, according to the new idea of pass-through design proposed by domestic and foreign experts, two new formulas of pass design are derived for field reference.