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三分钟了解冷轧精密不锈钢带
发布时间:2020-06-09  查看次数:

  随着通讯、电子、办公自动化设备的快速发展和变革,用户对不锈钢带的要求也日渐严格,与常规不锈钢薄板不同,精密不锈钢带通常指厚度小于0.3mm的不锈钢带,精密不锈钢带作为不锈钢板带领域中的高端产品,具备优异的强度、精度、表面光洁度等性能,被广泛地应用于电子冲压件、光缆、金钢石刀片,光刻材料等。目前,精密不锈钢带的主要生产工艺包括冷轧、光亮退火、精整等。

  1、精密不锈钢带轧制工艺

  JINGMIBUXIUGANGDAIJIBOHUA、GAOQIANGDUHUA、GAOJINGDU HUADEXINGNENGYAOQIUDUIYAZHIGONGYITICHULEHENGAODEYAOQIU,CAIYONGCHANGGUIYAZHIGONGYIWUFAMANZUJINGMIBUXIUGANGDAIDESHENGCHAN,MUQIANJIBENCAIYONG20GUNYAJISHENGCHANJINGMIBUXIUGANGDAI,QIWANZHENGDESHENGCHANGONGYIBAOKUOLENGYA、TUIHUO、JINGZHENG。ZAIYAZHIGUOCHENGZHONG,YINGZHUYIXUANQUHESHIDEYAXIAZHIDU、ZHANGLIZHIDU、SUDUZHIDUJIGUNXINGDENG。WEILETIGAOYAJIDESHENGCHANNENGLI,ZAICHONGFENLIYONGYAJIJIQIANHOUJUANQUJIZHUCHUANDONGGONGLVDEQIANTIXIA,YAOJINKENENGDIJIADADAOCIYAXIALVYIJIANXIAOYAZHIDAOCI。ZHANGLIKEYIJIANGDIYAZHIYALI、GAISHANBANXING、WENDINGYAZHIGUOCHENG,20GUNYAJIYAZHIGUOCHENGYIBANCAIYONGDAZHANGLI,TONGSHI,HAIYINGGENJUBANXINGSUISHIJINXINGDIAOZHENG,DANGCAILIAOZHONGBUYOUBOLANGSHI,YINGJIANXIAOZHANGLIFANGZHILALIEDAIBIANHUODUANDAI,DANGDAICAICHANSHENGBIANLANGSHI,KEYISHIDANGZENGJIAZHANGLI。ZAIYAJIYUNXUSHIYONGDESUDUFANWEINEIYINGJINKENENGCAIQUGAODEYAZHISUDU,YITIGAOYAJIDESHENGCHANNENGLI,TONGSHI,DANGYAZHISUDUZENGJIASHI,YAZHIYALIXIANGYINGYOUSUOJIANXIAO。DIYIDAOCIYAZHISHI,YIBANCAIYONGJIAODIDEYAZHISUDU。

  2、LENGYASHEBEI

  GENJUYAZHIYUANLI,ZAIZUIDAYALITIAOJIANXIA,YINGGAI SHIYONGZHIJINGJINKENENGXIAODEGONGZUOGUN,YIGONGZUOGUNDEXIAOZHIJINGHUAWEIMUBIAO,FAZHANLE6GUN、12GUNHE20GUNDENGDUOGUNYAJI。QIZHONG20GUNYAJIYOUYUYAJIDEGANGXINGDA、YAGUNDANXINGNAOQUBIANXINGXIAODENGYOUDIAN,CHENGWEISHENGCHANJINGMIBUXIUGANGDAIDESHOUXUANSHEBEI。

  HOUDUJIBANXINGKONGZHI

  YAOSHISUOYADAIGANGHOUDUBAOCHILIANGHAODEYIZHIXING,XIAOCHULAILIAOHOUDUDEYINGXIANG,ZUIKEKAODEBANFASHIZAICHUANTONGKONGZHIFANGSHIZHONGZENGJIAQIANKUIKONGZHI。GENJUCEDEDEDAIGANGHOUDUBIANHUA,TONGGUOYANSHIKONGZHIQI,DIAOJIEYAGUNGUNFENG,YIBAOZHENGZHONGYADAIGANGHOUDUBAOCHIHENGDING。CHUANTONGGUNYAJIDEAGCKONGZHIXITONGZHONG,CHANPINHOUDUJINGDUSHIKAOFANKUIXITONGZHONGFUJISUANJINXINGSHEDINGERDADAODE。ZAIXIANDAIAGCKONGZHIXITONGZHONG,GENJUSANJIAOXUEYUANLIHEZIDONGYAGUNGUANLIXITONGJIEJUELEGUNXIDEJIHEJISUAN,TONGSHIYEJIEJUELEWEIZHISHEDING,XIANDAIGUNYAJIDEAGCKONGZHIZHONG,GENJUGONGZUOGUNDESHIJICHICUN,JISUANZHICHENGGUNPIANXINLUNDESHEDINGWEIZHI,SHIGONGZUOGUNCHUYULINGWEI。ZHEIYIFANGFABIMIANLERENGONGDIAOZHENGSHI,YINFANXIANGDIAOZHENGERZAOCHENGSHIGU。

  ZAIBANXINGKONGZHIFANGMIAN,JIN20NIANLAI,GUOJISHANGXIANHOUKAIFALEYIXILIEXIANJINDEBANXINGKONGZHIJISHU。TONGGUOCAIYONGYIDINGDEYAGUNGUNXINGPEIYIWANGUN、CUANGUNDENGJISHU,MANZULEYONGHUDUIBANXINGZHILIANGJINGDURIQUYANGEDEYAOQIU。ZAIYAJIDECHURUKOUFENBIEANZHUANGLIANGGENBANXINGCELIANGGUN,BANXINGCELIANGGUNYANZHOUXIANGANZHUANGLEZHONGDUODEYALICHUANGANQI,DAIGANGZAIYAZHIGUOCHENGYAZAIBANXINGCELIANGGUNSHANG,YINERBANXINGCELIANGGUNNEIDEYALICHUANGANQIDESHUCHUXINHAOSUIDAIGANGBANXINGDEBIANHUAERBIANHUA,ZHEIXIEXINHAOJINGBANXINGKONGZHIXITONGZONGHECHULIHOUZUOYONGYUYEYAFA,YEYAFADEDONGZUODUIZHICHENGGUNDEPIANXINLUNJINXINGWEIDIAO,TONGSHIZHEIXIEXINHAOYEKONGZHIDIYIZHONGJIANGUNDEHENGYI,ZHEIYANGDAIGANGDEBANXINGDEDAOYOUXIAODEKONGZHI。

  ZHANGLIKONGZHI

  20GUNYAJIDEZHANGLIKONGZHIXITONGCAIYONGLEJIANJIEZHANGLIHEZHIJIEZHANGLIHUNHEKONGZHIDEBANFA,ZAIGANGDAIYAORU JUANQUJIQIANKOUHOUJIANZHANGGUOCHENGZHONG,CAIYONGSUDUKONGZHIXITONGJINXINGJIANJIEZHANGLIKONGZHI,JISUDU、DIANLIU、DIANYASANBIHUANDIANSHUKONGZHI,YOUYUJUANQUJIDEDISUPAXINGXIANSUDUYIBANJIAOZHUYAJIDEPAXINGCHUANDAISUDUTIGAO5%~10%,YINCI,GANGDAIHENKUAIZHANGJIN,DANGCIZHANGLIZHIDADAOSHEDINGZHIDE 70%~80%SHI,XITONGZIDONGZHUANWEIZHIJIEZHANGLIKONGZHI,ZHANG LIDIAOJIEQITOURUGONGZUOZHONG,SHIXIANZHANGLI、DIANLIU、DIANYASANBIHUANKONGZHI。

  GUNXINGDIAOZHENGJIGOU

  20GUNYAJIDEGUNXINGDIAOZHENGJIGOUBAOKUOZHICHENGGUNDEAS-UTUDUDIAOZHENG,YIDUANDAIZHUIDUDEKEZHOUXIANG YIDONGDEYIZHONGJIANGUN。AS-UTUDUDIAOZHENGJINGGUOERZHONGJIANGUN,YIZHONGJIANGUNCAICHUANDAOGONGZUOGUNSHANG,YINCIGAIDIAOZHENGFANGSHIDUIGONGZUOGUNGUNXINGDEYINGXIANGJIAOXIAO,ZHINENGDUIGUNFENGJINXINGWEILIANGDIAOZHENG,ZENGDATUDU,DAIGANGZHONGBUYANSHENBIANDA,JIANXIAOTUDU,DAIGANGBIANBUYANSHENBIANDA,DANDUIJIAOFUZADEBANXINGQUEXIAN,RUSIFENZHIYIPIAOQU,AS-UTUDUDIAOZHENGXIAOGUOJIAOXIAO。YIZHONGJIANGUNYIDUANDAIZHUIDUBINGKEYIZHOUXIANGYIDONG,YOUXIAODIXIAOCHULEGONGZUOGUNDUANTOUNAODUBIANHUADUIDAIGANGZAOCHENGDEBIANLANG。YIZHONGJIANGUNZHOUXIANGYIDONGBUJINDUIDAIGANGBIANBUYANSHENBIANXINGYOUHENDAZUOYONG,DUIDAIGANGZHONGBUYANSHENYEYOUYIDINGYINGXIANG。

  3、RECHULIHEJINGZHENGGONGYI

精密不锈钢带的热处理工艺与普通不锈钢 板的热处理工艺基本相同,300系列奥氏体不锈钢典型的热处理工艺是固溶处理。在升温过程中使碳化物溶入奥氏体,加热到1050~1150℃,适当保温一段短时间,使碳化物全部溶解于奥氏体,然后迅速冷却到350℃以下,得到过饱和固溶体即均匀的单向奥氏体组织。这一热处理工艺的关键是快速冷却,要求冷却速度达到55℃/s,快速通过碳化物固溶后的再析出温度区(550~ 850℃),保温时间要尽量短,否则晶粒粗大,影响表面光洁度。400系列铁素体不锈钢加热温度比较低(900℃左右),并较多采用缓冷获得 退火软化组织。马氏体不锈钢还可采用分段淬火再回火的方式处理。不锈钢冷轧带钢热处理的另一关键问题是要求整根带钢在宽度、长度上组织都很均匀。马弗式光亮退火炉采用大尺寸马弗管,从马弗管外部均匀地组织加热气流螺旋式环绕而过,使带钢均匀加热。而要确保带钢沿长度方向的组织均匀,就要保持带钢在加热炉中的线速度不变。所以,在现代立式光亮热处理炉前后都装有可精密调整的辊式张力调整装置。它不但要使带钢进出口速度满足热处理速度的要求,不受活套量空套或满套的影响,而且要根据带钢的板形情况建立并精密调整带钢小张力,满足板型的要求。

  精密不锈钢带的精整主要包括张力矫直和纵切。带钢经退火后,为了获得良好的板型、机械加工性能和深冲性能,通常要经过拉矫机组,其工作特点是在拉伸和连续交替弯曲的联合作用下使带材产生塑性延伸而获得矫正。带钢通过拉伸矫直过程可消除中浪、1/4浪、边浪及纵弯和横弯等缺陷,但光亮度减少1%。拉伸矫直后带钢成品平直度精度可达来料平直度的 1%。为将宽带钢切边、剖分成成品窄带钢,较 多采用纵切机,当今纵切机发展了很多新技术,如自动调节纵切刀具的嵌入量和轴向夹紧;剪刀快速更换系统,比常规方法少50%的更换时间;真空技术,用于安全运输,自动剪切带材和防止带材表面的任何损坏。

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