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本帖最后由 88169103 于 2012-4-13 16:11 编辑 * U, U4 n0 Q% m* T) T( U
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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？9 D! n2 {$ o9 Y, u h
16.14.1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is
9 Z0 F' D V* _5 e/ S5 b. xtightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw
6 a* X) X2 e" ~" R8 iwithstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction
5 e& y0 r U0 ncoincident with the axis of the screw.2 N# z1 S; d6 W9 X+ M4 |" n, y
1>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？) e1 u3 N4 U/ B* V a
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？
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下面这种又是什么情况下要查表测试的呢？
/ b5 W3 j- Y6 S; t4 U& B) Q16.14.1 (MEX) Screws may be used if threads are not stripped when the screw is tightened with the
6 d- E) b8 x, j% d+ ~torque given in Table 16.14.1 (MEX) and if the part or the assembly supported by the screw withstands
/ y% d, r4 \7 `' M6 S% V' f, }for 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident* ?" F {2 p7 P( @ o; x
with the axis of the screw.
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1 D/ r/ V9 B, J; O ]还请各位前辈指教指教. W6 g8 `0 o; v
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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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