jsspace 发表于 2014-6-19 10:32

cherryliao 发表于 2014-6-19 10:29 static/image/common/back.gif
这个解释实在是太形象了。

小时候梦想是当老师,就是用最浅显的比喻说明最复杂的问题,这个是境界。

jjlamshushushu 发表于 2014-6-19 10:38

在水口比例变更或超过15%时,应做如下有效性鉴定  
•装配测试,反复3次,受力点应无断裂、发白、料脆等;  •用300g 1m落球撞击试验3次,应无爆裂; 
此外还有耐压测试,球压测试,防火测试。

热爱学习 发表于 2014-6-19 12:31

jjlamshushushu 发表于 2014-6-19 10:38 static/image/common/back.gif
在水口比例变更或超过15%时,应做如下有效性鉴定  
•装配测试,反复3次,受力点应无断裂、 ...

难得jj哥认真回答一次问题,但是依据为何?有没有标准或出处?还是经验之谈?

Andy.Yang 发表于 2014-6-19 12:52

If the plastics&housing described in the FUS procedure is UL R/C QMMY2, then you need to control the ratio of the recyle material, but if the one is the UL R/C QMFZ2, then basically, UL does not care how much the recycle material was used, and that's the responsiblity of the manufacturer to make sure the fabricated parts can comply the standard's requirements.

Andy.Yang 发表于 2014-6-19 12:53

本帖最后由 Andy.Yang 于 2014-6-19 12:55 编辑

So when it's used under the QMFZ2, then that's the internal control...
and then do some tests, such as the impact test, temperature test to verify&evaluate this construction can comply the standard's requirements...

jjlamshushushu 发表于 2014-6-19 13:48

热爱学习 发表于 2014-6-19 08:31 static/image/common/back.gif
难得jj哥认真回答一次问题,但是依据为何?有没有标准或出处?还是经验之谈?

别埋汰哥好不好?哥一直很认真的。。。;P

嘻嘻 发表于 2016-5-20 18:28

这个问题总算找到答案了
答案在UL746D,里面有提到水口超过25%,会影响产品性能

waterssj 发表于 2019-7-3 12:43

相当于二次回料,一般风险要大很多,关键位置不建议混用
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