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contact t drawing 接触绘图
It shows that the contact face between ore and waste as a ideal interface is incorrect during drawing.
研究指出：在放矿过程中，将崩落矿岩接触带视为一理想界面是不正确的。
Based on the rules of drawing force, drawing process is divided into four stages: start, first contact, entire contact, stable.
并将拔制力分为四个阶段：起始、初步接触、完全接触、稳定。
In this paper, friction field distribution between sliver and pressure bar on a homebred drawing frame is analyzed, and on this basis, the best range of contact arc is deduced.
本文以国产并条机为例，分析了并条机上须条与压力棒上摩擦力界的分布，并进一步推导出了须条对压力棒包围角度的最佳范围。
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