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本帖最后由 88169103 于 2012-4-13 16:11 编辑 ! T$ e+ r7 c' l8 B E- R
0 L8 U' L% _' o% L4 l; Y8 {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？
, f. H6 ]# T: `/ H! Y2 Q8 }$ C16.14.1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is! ?' r0 M' `9 {
tightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw p! G% k; X+ e( j
withstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction2 `0 o0 c; H3 l, K; l# Q
coincident with the axis of the screw.
+ h3 h% b9 Z1 \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？
5 H0 Q8 l8 S7 T3 D2>在螺钉轴方向施加螺钉四倍重量，用3.39N.m的力拧一分钟？$ i3 W# i2 Q/ T
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7 i( ^3 l) u: V9 O) n; N. p/ C5 G+ L- y. x下面这种又是什么情况下要查表测试的呢？
% h+ c7 E3 }, A8 F% H16.14.1 (MEX) Screws may be used if threads are not stripped when the screw is tightened with the s1 T! o1 P5 N" g* l9 t
torque given in Table 16.14.1 (MEX) and if the part or the assembly supported by the screw withstands Q+ E. P- X3 ^' n7 ^" t6 P7 ~# {
for 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident
7 V+ l! Z* q" |0 P- `with the axis of the screw.
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还请各位前辈指教指教
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& \ u1 i5 v5 b6 w. D. X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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