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The effects of process parameters on the shrinkage and tensile properties of stainless steel and the conductivity of graphite in powder injection molding.

机译：工艺参数对粉末注射成型中不锈钢的收缩和拉伸性能以及石墨的电导率的影响。

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摘要

The objective of this study was to evaluate the effects of different process parameters on the shrinkage and tensile properties of stainless steel and the effect on the conductivity of injection molded graphite. Different percentages of graphite/stainless steel powder and binder were mixed using a premixer. The mixture was then grinded to convert it into small granules; these granules were then injection molded into flexural and tensile bars. The injection molded flexural and tensile bars were then debinded at different times and temperatures. Then the shrinkage, tensile and conductivity tests were conducted on the bars and the shrinkage, modulus, and volume resistance was calculated for each of the samples. The effect of powder/binder concentrations, debinding times, and debinding temperatures were studied on the shrinkage, modulus and conductivity of the samples. It was seen that, as the powder concentration was increased in the graphite sample, the volume resistance of the sample decreased, and in case of stainless steel samples the shrinkage and the tensile properties increased. It was also seen that with the increase in debinding time and temperature there was a considerable decrease in the volume resistance, shrinkage, and the tensile properties.
机译：这项研究的目的是评估不同工艺参数对不锈钢的收缩和拉伸性能的影响，以及对注塑石墨导电性的影响。使用预混合器将不同百分比的石墨/不锈钢粉末和粘合剂混合。然后将混合物研磨以将其转化为小颗粒；然后将这些颗粒注射成型为弯曲和拉伸棒。然后在不同的时间和温度下将注射成型的弯曲和拉伸棒脱胶。然后对棒进行收缩，拉伸和导电率测试，并计算每个样品的收缩，模量和体积电阻。研究了粉末/粘合剂浓度，脱脂时间和脱脂温度对样品的收缩率，模量和电导率的影响。可以看出，随着石墨样品中粉末浓度的增加，样品的体积电阻降低，而在不锈钢样品中，收缩率和拉伸性能增加。还可以看出，随着脱脂时间和温度的增加，体积电阻，收缩率和拉伸性能大大降低。

著录项

  • 作者

    Maheshwari, Ankur.;

  • 作者单位

    University of Massachusetts Lowell.;

  • 授予单位 University of Massachusetts Lowell.;
  • 学科 Plastics Technology.; Engineering Metallurgy.
  • 学位 M.S.Eng.
  • 年度 2001
  • 页码 102 p.
  • 总页数 102
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 整形外科学（修复外科学）;冶金工业;
  • 关键词

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