From : "s,k,Back" <[log in to unmask]>
>>hi everyone
>>I work for CCL Maker
>>I have some troubled in Measling
>>I think Measling is can happen in case The board sbsorbed in moisture.
>>I test the water absorption
>>The result is fllowed
>>(Solder Temperature 260℃)
>>----------------------------------------------------------
>>   Condition                       Solder dipp time
>>  (P,C,T Time)                     60 sec       180 sec
>>  ========================================================
>>      30 minute                   Measling       OK
>>      1 Hour                         OK          OK
>>      2 Hour                         OK          OK
>>  ========================================================
>> The only P,C,T 30minute, 1minute Dipping in solder pot
>> 260℃ Happen measling
>>( Only Measling happen a boundary line)
>> P,C,T 1hour, 2Hour solder dipping not happen The measling
>> Why this happen.
>> Any one know Why happen Measling ?
>>
>>
>>==================================================
>>NO. 1 우리 인터넷, 다음
>>평생 쓰는 무료 E-mail 주소 한메일넷
>>http://www.daum.net
<hr>

==================================================
NO. 1 우리 인터넷, 다음
평생 쓰는 무료 E-mail 주소 한메일넷
http://www.daum.net

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