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本帖最后由 88169103 于 2012-4-13 16:11 编辑 " K; C" O, z. B4 a+ v, t& k
! t9 U# ?9 e; ^* H- p关于UL1598里面的自攻螺丝扭矩测试，下面的测试方法是正确的吗？. Y1 q- C3 W7 B/ W* u4 J/ |+ S4 S- X
16.14.1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is" ^3 w5 C6 r1 j4 D! H% G
tightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw' p" ]- C9 i' W7 a- [
withstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction) |4 f2 d" w2 x* r) u' z2 O; o% h
coincident with the axis of the screw.
. X: W7 W2 Z4 ~! V1>先用3.39N.m的力拧紧螺丝，在螺丝表面施加螺钉四倍重量一分钟？ c1 K% y+ G' L! ^" n# u& u+ P
2>在螺钉轴方向施加螺钉四倍重量，用3.39N.m的力拧一分钟？( G! K$ J) r# n9 q4 W9 |4 N
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下面这种又是什么情况下要查表测试的呢？/ ^8 i( a+ l2 }% a4 B( _
16.14.1 (MEX) Screws may be used if threads are not stripped when the screw is tightened with the0 F% e) L) l1 d4 ~. `- Y) T( J4 p% Y
torque given in Table 16.14.1 (MEX) and if the part or the assembly supported by the screw withstands
, x. |2 ^* s5 ^5 x1 i2 ~+ B0 cfor 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident
, e) _" L( _- {+ R& [with the axis of the screw.9 @* H$ q( j' B, o; d! k/ y& R N) \1 w
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还请各位前辈指教指教
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难道没有人知道这个测试？没一个人回答！
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发表于 2012-4-13 09:33
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