After cast iron surface plate abrasion, it can be re-repair scratch resume its accuracy.
Cast iron surface plate can test parts flatness by coloring method, it is accurate, intuitive and convenient. cast iron plate promote table seat and the workpiece is relatively smooth, it is convenient to measure, to ensure the accuracy of measurement.
Cast iron quilty of cast iron surface plate and quality of heat treatment have a greater impact on the flat performance. Due to the residual large stress make the surface deformation. Or due to impatience wear so that the accuracy can not be maintained; Or because of scraping difficulty can not get the small value roughness. Therefore, the use of cast iron plate must be selected cast iron materials, adopt aging treatment method to eliminate the residual stress of cast iron surface plate.