daocaoren 发表于 2012-12-11 20:15

self-threading screw torque test

UL 1598 5.10.2 Self-threading screws, including sheet-metal screws, used to secure electrical or enclosure
component parts in place or together, shall comply with the self-threading screw torque test in Clause
16.14, when the screw threads into nonferrous metal or polymeric material.

这里讲了when the screw threads into nonferrous metal or polymeric material.，要做self-threading screw torque test
如果旋入的是其他材料 比如陶瓷呢？

jsspace 发表于 2012-12-11 20:29

陶瓷能旋入进去？？

daocaoren 发表于 2012-12-11 20:34

可以啊 有牙的 就是一个陶瓷灯座 倒T型的 底盘用螺丝固定了带插头的电源线

Nezof 发表于 2012-12-12 08:53

陶瓷能耐得住冲击不？
貌似很多用陶瓷的都是用铆钉铆死的
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