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<p>The use of polymer materials stands out in the automotive and aerospace industries because a few years ago they were predominantly using metals. Polyacetal or polyoxymethylene (POM) is one of those materials that has good mechanical resistance to fatigue and chemical agents, low coefficient of friction, high stiffness and, when combined with low density, is suitable for several industries that require excellent dimensional and geometric tolerances. Since the literature about the grinding of polymer materials is rare, the work described sought to provide preliminary results about the surface quality of POM&#xa0;after grinding with aluminum oxide grinding wheels. Radial depths of cut and workpiece velocity were the input variables tested at levels typically used for steels. The topography of workpieces was assessed using several roughness parameters and texture. As a result of these preliminary studies, surface roughness was not adversely affected when the radial depth of cut was increased, which is usually observed when grinding steels. The average surface roughness (<i>R</i><sub><i>a</i></sub>) values were below 0.65&#xa0;μm. However, surface texture deteriorated with an increase in workpiece velocity. The research showed that grinding of POM is achievable and comparable to grinding metals in terms of surface quality to achieve dimensional and geometric tolerances.</p>

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Evaluation of the surface quality of polyacetal (polyoxymethylene(POM)) after grinding with vitrified alumina grinding wheels

  • 期刊论文

  • 发表日期：

    2025年9月6日

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  • Rosemar Batista Da Silva,
  • Matheus Leandro de Souza Borges,
  • Artur Camposo Pereira,
  • Leonardo Rosa Da Silva,
  • Rhander Viana,
  • Mark J. Jackson

摘要

The use of polymer materials stands out in the automotive and aerospace industries because a few years ago they were predominantly using metals. Polyacetal or polyoxymethylene (POM) is one of those materials that has good mechanical resistance to fatigue and chemical agents, low coefficient of friction, high stiffness and, when combined with low density, is suitable for several industries that require excellent dimensional and geometric tolerances. Since the literature about the grinding of polymer materials is rare, the work described sought to provide preliminary results about the surface quality of POM after grinding with aluminum oxide grinding wheels. Radial depths of cut and workpiece velocity were the input variables tested at levels typically used for steels. The topography of workpieces was assessed using several roughness parameters and texture. As a result of these preliminary studies, surface roughness was not adversely affected when the radial depth of cut was increased, which is usually observed when grinding steels. The average surface roughness (Ra) values were below 0.65 μm. However, surface texture deteriorated with an increase in workpiece velocity. The research showed that grinding of POM is achievable and comparable to grinding metals in terms of surface quality to achieve dimensional and geometric tolerances.