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焊接過(guò)的鈑金有什么好處?

發(fā)布日期:2019-05-28 15:41:18 作者:admin 點(diǎn)擊:1242


在鈑金加工的過(guò)程中,基本都會(huì )加入焊接這道工序。那么,焊接過(guò)的鈑金有什么好處?下面來(lái)了解一下吧!

焊接的好處是焊接過(guò)程容易實(shí)現機械化和自動(dòng)化。簡(jiǎn)化加工與裝配工序,提高生產(chǎn)效率。

結構強度高,接頭密封性好。為結構設計提供較大的靈活性。節省金屬材料,減輕結構重量。

在完成鈑金機箱的制作之后,難免會(huì )出現不良品,其中,有可能是由于焊接引起的問(wèn)題。

焊接結構容易引起較大的殘余變形和焊接內應力。由于焊接方法都采用局部加熱,經(jīng)焊接后的焊接件,在結構中會(huì )產(chǎn)生不可避免地應力和變形,從而影響結構承載能力、加工精度和尺寸穩定性。同時(shí)在焊縫與焊件交界處還會(huì )引起應力集中,影響結構脆性斷裂。

焊接接頭具有較大的性能不均勻性,由于焊縫的成分及金相組織與母材不同,接頭各部份經(jīng)歷的熱循環(huán)不同,使不同區域接頭的性能不同。

焊接接頭中容易存在數量上的缺陷,如裂紋、氣孔、夾渣、未焊透、未熔合等。缺陷會(huì )降低強度、引起應力集中、損壞焊縫致密性。鈑金的焊接具有以上優(yōu)勢。


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