The flatness accuracy management is confirmed with a straight gauge.

Reassess the causes of scratches, decreased rate, and worsening parallelism from the perspective of the surface plate shape. For checking, use only a straight gauge!

In double-sided lapping and polishing processes, if there are issues such as decreased processing rates, workpiece scratches, or worsening parallelism, it is important to check not only the processing conditions and consumables but also the accuracy of the reference plate. The reference plate and polishing pads can wear and experience uneven wear due to repeated processing, which may affect the contact with the workpiece and the alignment with the upper and lower reference plates. The linked article explains the impact of reference plate accuracy on processing quality and the importance of checking the condition of the reference plate with a straight gauge. This is recommended for those who want to manage reference plate accuracy on a daily basis and identify the causes of processing defects. 【Features】 ■ For managing the accuracy of reference plates in double-sided lapping and polishing ■ To identify the causes of scratches, rate reduction, and worsening parallelism ■ Explains how to assess the condition of the reference plate using a straight gauge ■ For addressing contact defects and uneven wear when changing workpiece sizes ■ Basic knowledge before considering reference plate measurement and correction *For more details, please refer to the related link or feel free to contact us.

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