|
此话差矣,焊接会弱化了材料的强度,其中涉及热处理的问题。
PS:楼猪哪个可能是说电阻焊,而哪个凹点就是焊接的时候为保证两块金属熔合而有的压力点,除了电阻焊还可以电弧焊、气焊、钎焊等等
fisher 发表于 2010-4-21 07:21
你说的这个我还真没想到过,我只记得以前上建筑结构课,老师提到过说一般来讲,焊点的强度比材料大。刚刚看到你说得这个以后,查了些资料。找到这么一个例子:铝的7018焊接,形成的焊接强度有70000psi,而材料的强度是60000psi。焊点的强度大于材料的强度。
另,找到这么样一个评述:
The short answer is stronger, but under the right conditions, type/method of weld, and the metal to be welded.
I have been working around welders for over 20 years and can say that rarely does a proper weld "break" before other sections of the parent metal.
I found the following decent articles that may be of interest to you:
Source(s):
http://nptel.iitm.ac.in/courses/Webcours…
http://www.twi.co.uk/content/jk70.html |
|