Scraped Surface Plate
Scraping involves scrape and lapping. After many times’ scraping ad lapping, the surface roughness and geometrical errors of the Scraped Surface Plate are reducing gradually and the contact accuracy and geometric accuracy of the Scraped Surface Plate are improved gradually until all the values reach to the requirements.
Usage:
Scraped Surface Plate is always used as the datum for measurement of the machinery parts’ geometric tolerance,such as flatness, parallelism, straightness and more. It is also can be used for precision inspection, marking out (layout), and tooling setup. It is an indispensable basic equipment in most mechanical manufacturing industries.
刮研平台精度：按国家标准计量检定规程执行，分别为0，1，2，3级四个级别。
刮研平台材料：高强度铸铁HT200-300，
刮研平台工作面硬度：HB170-240
刮研平台表面质量检验：用涂色发检验。0级1级平板在每边为25毫米平方的范围内不少於25点，2级不少於20点，3级不少於12点。
Accuracy of Scraped Surface Plate:
It be classified as Grade 0,1,2,3,4 according to the national standard metrological verification procedures
Material: High-strength cast iron HT200-HT300.
Hardness: HB170-240.
Quality Testing Method: Color available method inspection parts flatness, with accurate, intuitive, convenient advantages.