无缝钢管导(dao)致椭圆(yuan)的缘故

无(wu)缝钢管(guan)(guan)椭圆即制(zhi)成品截(jie)面呈椭圆形(xing)。在(zai)拔(ba)制(zhi)全过程中(zhong)(zhong)应(ying)用了模(mo)孔(kong)(kong)是(shi)椭圆形(xing)的拔(ba)管(guan)(guan)模(mo)或(huo)是(shi)在(zai)矫(jiao)(jiao)直(zhi)(zhi)时(shi)(shi)因(yin)为无(wu)缝钢管(guan)(guan)两边(bian)弯折过大(da)，在(zai)矫(jiao)(jiao)直(zhi)(zhi)全过程中(zhong)(zhong)左右(you)晃动，无(wu)缝钢管(guan)(guan)直(zhi)(zhi)径(jing)过大(da)送入(ru)时(shi)(shi)卡(ka)死、无(wu)缝钢管(guan)(guan)尾端左右(you)摇摆过大(da)及其各对矫(jiao)(jiao)直(zhi)(zhi)辊中(zhong)(zhong)间(jian)压下量分派(pai)不均匀等均会(hui)造成这类缺(que)点。假如因(yin)为模(mo)孔(kong)(kong)椭圆而造成缺(que)点应(ying)拆换拔(ba)管(guan)(guan)模(mo)。若无(wu)缝钢管(guan)(guan)椭圆是(shi)在(zai)矫(jiao)(jiao)直(zhi)(zhi)全过程中(zhong)(zhong)产生的，应(ying)清除(chu)矫(jiao)(jiao)直(zhi)(zhi)时(shi)(shi)导致椭圆的相关缘故。