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关于拉伸试验速度(十字头移动速度或应力增加速度)对拉伸力学指标的影响,我们曾作过详尽的分析研究,并且得出了某些肯定的结论。但是从武钢生产薄板以来,我们从生产实践中发现,薄板的力学指标和拉伸速度之间的关系与文献〔1〕的结论有出入,足见薄板的拉力试验有其独自的特点。然而,我们查找了ISO及有关国家的薄板拉伸试验标准,虽然ISO和多数国家对0.5～3毫米厚的薄板拉力订了专门的标准,然而拉伸速发并未作特殊的规定,各国标准中的有关拉伸速度的规定基本上仍如文献〔1〕中所示。那么这样的拉伸速度对薄板的力学指标有何影响呢?这就是我们所需了解的问
With regard to the influence of tensile test speed (cross-head moving speed or stress increasing speed) on the tensile mechanics index, we have conducted exhaustive analysis and research and reached some positive conclusions. However, since the production of thin steel plate from WISCO, we found from the practice of production, the mechanical properties of the sheet and the relationship between tensile velocity and the literature [1] are different from the conclusion that the tensile test sheet has its own unique characteristics. However, we searched for the ISO and the related national standards for tensile testing of sheets. Although ISO and most countries have set special standards for the tensile strength of sheets 0.5 to 3 mm thick, there are no special regulations for the tensile speed. The standards The provisions of the stretching speed is still basically as shown in the literature [1]. So what is the effect of such stretching speed on the mechanical properties of the sheet? This is what we need to know