旋(xuan)壓(ya)封(feng)頭利用旋(xuan)壓(ya)成型工藝。旋(xuan)壓(ya)可(ke)(ke)制(zhi)造各種(zhong)軸對稱旋(xuan)轉體零件，如揚聲(sheng)器、彈(dan)體、高壓(ya)容器封(feng)頭、銅鑼；也可(ke)(ke)用于(yu)氣(qi)瓶收口、筒坯成形(xing)等。旋(xuan)壓(ya)的(de)特點是：用很(hen)小的(de)變形(xing)力可(ke)(ke)成形(xing)很(hen)大的(de)工

旋(xuan)(xuan)(xuan)壓(ya)封頭(tou)利用(yong)(yong)旋(xuan)(xuan)(xuan)壓(ya)成(cheng)(cheng)型工(gong)藝。旋(xuan)(xuan)(xuan)壓(ya)可(ke)制造各種軸對稱旋(xuan)(xuan)(xuan)轉體零件(jian)，如揚聲器(qi)、彈體、高(gao)壓(ya)容器(qi)封頭(tou)、銅(tong)鑼；也可(ke)用(yong)(yong)于氣瓶收口、筒坯(pi)(pi)成(cheng)(cheng)形(xing)(xing)等。旋(xuan)(xuan)(xuan)壓(ya)的(de)(de)特點是：用(yong)(yong)很小的(de)(de)變(bian)形(xing)(xing)力可(ke)成(cheng)(cheng)形(xing)(xing)很大(da)的(de)(de)工(gong)件(jian)；使(shi)用(yong)(yong)設備比較(jiao)簡單，中小尺寸的(de)(de)薄板(ban)件(jian)可(ke)用(yong)(yong)普通車床旋(xuan)(xuan)(xuan)壓(ya)；模具簡單，只需要一塊(kuai)芯(xin)模，材質(zhi)要求低。旋(xuan)(xuan)(xuan)壓(ya)適用(yong)(yong)于小批生產,因其只能加工(gong)旋(xuan)(xuan)(xuan)轉體零件(jian)，局限(xian)性較(jiao)大(da)，生產率低。旋(xuan)(xuan)(xuan)壓(ya)可(ke)用(yong)(yong)專門機(ji)械，采用(yong)(yong)仿形(xing)(xing)旋(xuan)(xuan)(xuan)壓(ya)和數字控(kong)制旋(xuan)(xuan)(xuan)壓(ya)。在(zai)旋(xuan)(xuan)(xuan)壓(ya)成(cheng)(cheng)形(xing)(xing)的(de)(de)同時(shi)使(shi)板(ban)厚減(jian)薄的(de)(de)工(gong)藝稱為變(bian)薄旋(xuan)(xuan)(xuan)壓(ya)，又稱強力旋(xuan)(xuan)(xuan)壓(ya)，多(duo)用(yong)(yong)于加工(gong)錐(zhui)形(xing)(xing)件(jian)、薄壁的(de)(de)管形(xing)(xing)件(jian)等，也可(ke)用(yong)(yong)以旋(xuan)(xuan)(xuan)壓(ya)大(da)直徑的(de)(de)深筒，再剖(pou)開后制成(cheng)(cheng)平(ping)板(ban)。旋(xuan)(xuan)(xuan)壓(ya)是將平(ping)板(ban)或(huo)(huo)空心坯(pi)(pi)料固定(ding)在(zai)旋(xuan)(xuan)(xuan)壓(ya)機(ji)的(de)(de)模具上，在(zai)坯(pi)(pi)料隨機(ji)床主軸轉動的(de)(de)同時(shi)，用(yong)(yong)旋(xuan)(xuan)(xuan)輪(lun)或(huo)(huo)趕棒加壓(ya)于坯(pi)(pi)料，使(shi)之產生局部的(de)(de)塑(su)性變(bian)形(xing)(xing)。