墊(dian)片是密封元(yuan)件，尤以紫(zi)銅制作的墊(dian)片應用(yong)更為廣(guang)泛。從事紫(zi)銅墊(dian)片生(sheng)產和(he)使(shi)用(yong)的人都(dou)知道，對墊(dian)片進行退火處(chu)理(li)好處(chu)多，只(zhi)是如(ru)何(he)進行退火處(chu)理(li)呢？

其實，對于紫銅材質的墊片進行退火處理的方法很簡單，就是用火焰或者高頻感應加熱電源即可。退火是一種金屬熱處理工藝，通過對紫銅墊片這樣的(de)(de)(de)金屬進(jin)行(xing)緩慢加熱達到特(te)定溫度，并(bing)保(bao)持足夠的(de)(de)(de)時間，然后在適宜的(de)(de)(de)溫度下進(jin)行(xing)冷(leng)卻，目的(de)(de)(de)是降低墊片的(de)(de)(de)硬度，并(bing)改(gai)善它(ta)的(de)(de)(de)初(chu)削加工性(xing)。

對紫銅墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)進行退(tui)(tui)火處(chu)理(li)(li)還(huan)可以消除(chu)墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)中的(de)殘余應力，穩定墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)尺寸，減少墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)變形和(he)出現裂紋的(de)傾向(xiang)。經過(guo)退(tui)(tui)火處(chu)理(li)(li)后的(de)墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)會變軟，可以起到緊固(gu)密封的(de)效(xiao)果。紫銅材質的(de)墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)經過(guo)退(tui)(tui)火處(chu)理(li)(li)，可以細(xi)化晶粒，調整組織，消除(chu)組織缺(que)陷，是一種對墊(dian)(dian)(dian)(dian)(dian)片(pian)(pian)(pian)有不少作用的(de)處(chu)理(li)(li)方式(shi)。