Общий каталог Tungaloy 2020 - 2021 - страница 1683

Surface Roughness

(According to JIS B 0601, 2001 and its explanation.) B

Type Symbol How to determine Example (Fig.)

Ra means the value obtained by the following formula and expressed in micrometer (μm) when sampling only the reference length from the C roughness curve in the direction of mean line,

taking X-axis in the direction of mean line and Y-axis Ra in the direction of longitudinal magnifi cation of this sampled part and the roughness curve is

sampled from the roughness curve in the direction of mean line, the distance between the top of profi le peak line and the bottom of profi le valley line on this sampled portion is measured in the

Rz

longitudinal magnifi cation direction of roughness F

curve and the obtained value is expressed in micrometer (μm). G RzJIS shall be that only the reference length is

sampled from the roughness curve in the direction of its mean line, the sum of the average value of absolute values of the heights of five highest

micrometer (μm) peaks of the sampled portion corresponding to the reference length R where, Z v1, Zv2, Zv3, Zv4, Zv5 : altitudes of the depths of fi ve deepest profi le I valleys of the sampled portion corresponding

to the reference length R

J

K

L

M