夹杂物

• The hard spots and nonmetallic inclusion in aluminum alloy die casting are studied through measuring chemical composition and micro - hardness . the source of these inclusion is analyzed and prevention measures are suggested
  研究了铝合金压铸件中的硬质点及其中的非金属夹杂物，测定了它们的化学成分和显微硬度，并分析了它们的来源，提出了防止的措施。
• It is studied that small inclusions in aluminum alloy are detected by ultrasonic transmission method in this paper . frequency analysis of the ultrasonic signal is done . harmonic factor and relative valid spectral power are calculated
  本文采用超声穿透法对ly12铝合金板材细小夹杂物进行了检测试验研究，并对超声信号进行了频谱分析，计算了谐波系数和相对有效谱功率。
• Abstract : the structure , composition analysis and mechanical test of q235 hot - rolled strip showed that main season of fracture during forming and welding is high nitrogen , oxygen and inclusion content
  文摘: q235钢热轧卷板在冲压和焊接成形时出现开裂，对其进行化学分析、宏观和微观组织观察及力学性能测试，结果表明：氮、氧及夹杂物的含量高是该钢冲压性和可焊性差的主要原因。
• Longitudinal crack formed when screw steel rebar is cold - bended was analyzed . the result indicates that ununiformly distributed silicate inclusions contributed to the longitudinal crack . protective measurements were also provided
  摘要对螺纹钢筋由冷弯产生的纵向裂纹进行了分析，结果表明，硅酸盐夹杂物分布不均匀是造成螺纹钢筋冷弯纵向裂纹的主要原因，并提出了相应的预防措施。
• The results show that the bottom area of the steel rail is rolled severely during rolling process , and thus resulted in the local plastic deformation , hardening and concentration of inclusions in the bottom area , leading to the premature fracture of the steel rail
  分析认为：钢轨在轧制过程中轨道底部区域收到严重碾压，产生了局部塑性变形和硬化，局部区域夹杂物集中，导致钢轨断裂。
• The frequency analysis results show conclusions as follows : 1 . the relative valid spectral power is declined with the volume percentage of inclusions in terms of exponent curve and the tendency of negative direction is same to that of forward direction
  当ly12铝合金细小夹杂物(小于0 . 16mm )的体积百分数从0 0 . 35时，在35 50mhz的频带范围内，超声波形的有效谱功率按近似指数曲线快速下降，沿相反方向检测时其变换趋势相同。
• Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - part 1 : determining the inclusion or second - phase constituent content of steels and other metals by automatic image analysis and stereology
  应用自动图像分析测定钢和其他金属中金相组织夹杂物含量和级别的标准试验方法第1部分:钢和其他金属中夹杂物或第二相组织含量的图像分析与体视学测定