旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)封頭(tou)利用(yong)(yong)(yong)旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)成(cheng)(cheng)型工藝(yi)。旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)可制(zhi)造各種軸對稱旋(xuan)(xuan)(xuan)(xuan)(xuan)轉體零件(jian)，如揚聲器、彈體、高壓(ya)(ya)(ya)(ya)(ya)容器封頭(tou)、銅鑼；也可用(yong)(yong)(yong)于(yu)氣瓶(ping)收口(kou)、筒(tong)坯(pi)(pi)成(cheng)(cheng)形(xing)等。旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)特(te)點是：用(yong)(yong)(yong)很小的(de)(de)(de)變(bian)形(xing)力(li)可成(cheng)(cheng)形(xing)很大(da)的(de)(de)(de)工件(jian)；使(shi)用(yong)(yong)(yong)設備比較(jiao)簡(jian)單(dan)，中(zhong)小尺寸的(de)(de)(de)薄板件(jian)可用(yong)(yong)(yong)普通車床(chuang)旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)；模具簡(jian)單(dan)，只(zhi)需要(yao)一塊芯(xin)模，材(cai)質(zhi)要(yao)求低。旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)適用(yong)(yong)(yong)于(yu)小批生產,因其只(zhi)能加(jia)(jia)工旋(xuan)(xuan)(xuan)(xuan)(xuan)轉體零件(jian)，局限(xian)性較(jiao)大(da)，生產率低。旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)可用(yong)(yong)(yong)專(zhuan)門機(ji)(ji)械，采用(yong)(yong)(yong)仿形(xing)旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)和(he)數字(zi)控制(zhi)旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)。在旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)成(cheng)(cheng)形(xing)的(de)(de)(de)同時使(shi)板厚減薄的(de)(de)(de)工藝(yi)稱為(wei)變(bian)薄旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)，又稱強力(li)旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)，多用(yong)(yong)(yong)于(yu)加(jia)(jia)工錐形(xing)件(jian)、薄壁的(de)(de)(de)管形(xing)件(jian)等，也可用(yong)(yong)(yong)以旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)大(da)直徑的(de)(de)(de)深筒(tong)，再剖開后制(zhi)成(cheng)(cheng)平(ping)板。旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)是將平(ping)板或空心(xin)坯(pi)(pi)料固(gu)定在旋(xuan)(xuan)(xuan)(xuan)(xuan)壓(ya)(ya)(ya)(ya)(ya)機(ji)(ji)的(de)(de)(de)模具上(shang)，在坯(pi)(pi)料隨機(ji)(ji)床(chuang)主軸轉動(dong)的(de)(de)(de)同時，用(yong)(yong)(yong)旋(xuan)(xuan)(xuan)(xuan)(xuan)輪或趕棒加(jia)(jia)壓(ya)(ya)(ya)(ya)(ya)于(yu)坯(pi)(pi)料，使(shi)之產生局部的(de)(de)(de)塑性變(bian)形(xing)。