断面收缩率是衡量材料塑性变形能力的性能指标。采用标准拉伸试样测试。试样拉断时颈缩部位的截面积与原始截面积之差,除以原始截面积之商的百分数即为断面收缩率。该值愈大说明材料的塑性愈好,对于锅炉、压力容器受压元件及其他重要工程构件的材料必须严格控制该值。
3.4 断面收缩率 ( reduction of area ):材料的塑性指标之一。材料受拉力断裂时 断面缩小,断面缩小的面积与原面积之比值叫 断面收缩率 ,以ψ表示。
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断面收缩率(percentage reduction of area)断面收缩率是试样拉断后,缩颈处横截面积的最大缩减量与原始横截面积的百分比。
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... Redrawing 二次拉深 Reduction of cross section 断面收缩率 Redundant work(deformation) 多余功(变形) ...
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...permanent relative reduction of area 断面收缩率 reduction of cross sectional area 断面压缩率 ; 断面收缩率 percentage of area reduction 缩面百分率 ; 断面收缩率 ; 面积收缩百分比 ; 面积缩减率 ..
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高温断面收缩率 Reduction of Area at High Temperature
By forging,primary normalizing and high temperature tempering,the reduction of area of a 45 steel magnetic yoke for electric machine was lower. Metallography observation indicates that slight banded structure exists in the steel magnetic yoke body.
某45钢电机磁轭锻造+一次正火+高温回火后断面收缩率偏低,金相观察发现在磁轭本体有轻微带状组织,返修件经二次正火+高温回火,消除了带状组织,断面收缩率达到了技术要求。
参考来源 - 45钢电机磁轭带状组织的消除与预防·2,447,543篇论文数据,部分数据来源于NoteExpress
为了成形大断面收缩率轴类零件,进行了楔横轧二次楔入试验。
For the sake of the axis accessory's figuration, the experiment of second wedge heavy section shrinkage was carried out.
钢板的抗层状撕裂性能采用厚度方向拉力试验的断面收缩率来评定。
The steel plate 'performance in the lamellar tearing resistance aspect can be assessed by reduction in area when doing tension test of through-thickness.
该研究拓宽了楔横轧加工界限,对大断面收缩率产品的开发有重要意义。
This study result widens the processing limit of cross wedge rolling and is of momentous significance to develop heavy section shrinkage products of cross wedge rolling.
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