2.309-73
Unified system for design documentation. Designations of surface finish | 2.309-73* 2.309-68 |
9 1973 . 2604
01.01.75
* ( 2000 .) 1, 2, 1980 ., 1984 .
( 11-80, 12-84)
.
1302.
( , . 1, 3).
1.1. , , , .
1.2. . 1.
.
. 1
( , . 3).
1.3. , . 2.
. 2
h . H (1,5... 5) h. , .
, , (. 2 a).
, , (. 2 ).
, , (. 1 ) .
( , . 3).
1.4. , , , .
, , , , , , , 3 2.104-68.
1.5. 2789-73 :
, : Ra 0,4; Rmax 6,3; Sm 0,63; t50 70; S 0,032; Rz 50.
. t50 70 tp = 70 % = 50 %,
( , . 3).