| |  一块的镀镍板，符合ISO 8503种规定的喷丸喷砂表面粗糙度测试标准。 当清洁铁板时，其表面会有不易改变的不规则的棱棱角角。专家推荐喷砂或喷丸板的粗糙度级别应该被简单而清晰的定义。ISO 8503规定了不同表面粗糙度的特征，在涂装领域参考这些特征可以很快的知道表面的粗糙度情况。 使用很简单，把比较板放在被测表面，在7倍放大镜的帮助下，顺次观察比较板上的四部分和被测表面，和被测表面表征最接近的区域所代表的级别就是被测表面的粗糙度级别。 订购信息：
R2006 –喷砂比较板
R2007 –喷丸比较板
RA001 –7倍放大镜 |
Roughness Comparator
TheISOSurface Roughness Comparator is a precision Nickel Comparator Plate that conforms to International StandardISO8503 andASTMD4417 for grit and shot-blast surface roughness comparison measurement.
When steel has been blast-cleaned, the surface consists of random irregularities with peaks and valleys that are not easily characterised. Experts have recommended that the profile should be identified as dimpled (shot-blast) or angular (grit-blast), and that they should be graded as Fine, Medium or Coarse with each grade being defined by limits specified inISO8503. These characteristics are considered to give sufficient distinguishing features for most painting requirements.
Easy to use, place the Comparator against an area of the test surface. Compare in turn the four sectors of the Comparator against the test surface using the X10 magnifier, placed so that the test surface is viewed simultaneously with a segment of the Comparator. The nearest profile to the Comparator determines the grade.
The different grades are defined as follows: Fine-grade profiles equal to segment 1 and up to, but excluding, segment 2; Medium-grade profiles equal to segment 2 and up to, but excluding, segment 3; and Coarse-grade profiles equal to segment 3 and up to, but excluding, segment 4.
