|
22.12 中提到的self-hardening resins究竟是什么胶水啊?问过不少人,但都说不清楚。主要是搞不清楚我们常用的胶水当中有哪些是self-hardening resins。TUV他们可以接受哪些? - r/ w% K1 ? t9 ^+ _! w# b$ _
相关条款如下:
% X6 H2 ~$ H) i22.12 Handles, knobs, grips, levers and similar parts shall be fixed in a reliable manner so
$ v& ^& t, K3 z. S* Hthat they will not work loose in normal use if loosening could result in a hazard. If these parts- d! h: B- w4 ^, X& B
are used to indicate the position of switches or similar components, it shall not be possible to fix
" f |% y" u2 h9 A W( [* Mthem incorrectly if this could result in a hazard.( l1 E) c' O3 u
Compliance is checked by inspection, by manual test and by trying to remove the part by* W0 L ?! Z0 @% J. ]3 W
applying an axial force of
! \9 d) f& A+ N7 g0 i0 M– 15 N, if an axial pull is unlikely to be applied in normal use;0 v" M+ d; n m6 G* A, k- \ d
– 30 N, if an axial pull is likely to be applied in normal use.1 j- h# a) u w; y8 _
The force is applied for 1 min.
9 G$ T3 w/ v! n' Y7 m3 |& e- FNOTE Sealing compound and similar materials, other than self-hardening resins, are not considered to be% L+ [$ z* v; P9 E; K# F y
adequate to prevent loosening.. |
|