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42CrMo合金管强化轧制技术

文章出处:http://bagsbig.com 发表时间:2017/6/9 9:08:29 点击:6

42CrMo合金管强化轧制技术

42CrMo合金管强化轧制技术的具体应用是怎样的?42CrMo钢是超高强度钢,具有高强度和韧性,淬透性也较好,无明显的回火脆性,淬火时变形小,调质处理后有较高的疲劳极限和抗多次冲击能力,低温冲击韧度良好,高温时有高的蠕变强度和持久强度。该钢通常将调质后表面淬火作为热处理方案。

42CrMo合金管是黑色冶金工业最普通的一种成品钢材。其年产量以数千万吨计。按现行标准规定,普通低碳结构用钢材含有以下成分:≤0.22%C;≤1.5~2.0%的以置换固溶体形式存在的合金元素(Mn、Si、Ni、Cu和Cr);≤0.1%的以强碳化合物和强氮化物的形成元素(Al、Ti、Nb和V);还含有少于0.05%的有害杂质(S和P)。

十年来,这种在线强化工艺技术及其产品得到了不断完善。尽管如此,经热轧后直接提供的低碳42CrMo合金管一般都存在强度指标偏低和耐寒性较差的缺点。近二十年来的课题归结为生产较高级强度级的低碳钢材两大课题。通过在轧制生产线上采用这样或那样的热处理工艺来强化轧件性能,使这一课题成功地得到了解决。

SHIYANDUIXIANGWEIGANGJINJIYIXINGCAI——HOUZHEWEI3GANGZHICHENGDEJIAOGANG、GANGLIANG、CAOGANG。SUOYOUZHEIXIEXINGCAIDOUZAIZHONG、XIAOXINGXINGCAIYAJISHENGCHANXIANYAZHIYUQIANGHUA。ZAIJINGYAJIJIAHOUMIANSHEZHICUISHUIXIANG,LENGQUESHUIJINGTEZHIDEGAOYAPENQIANG,YONGWENLIUSHUIQIANGHUALENGQUEYAJIANBIAOMIAN。YAJIANYI8~15m/sDESUDUJINGGUOCUISHUIXIANG。CONG1000~1050~ZHONGYAWENDUJIANGDAOZHONGJIANWENDU580~680"C(SHIGONGSHUIQIANGDUERDING)。RANHOUJIANGXINGCAISONGDAOLENGQUEGUNDAOSHANG,ZAINEILIKAOJINSHUZHONGXUCUNDERELIANGJINXINGZIHUIHUO。

YANJIUYAJIANJIEMIANDEJINXIANGZUZHI,CEDINGQIYINGDUZHI。ANZHAOBIAOZHUNJINXINGJIXIEXINGNENGSHIYAN。YONGZHONGYANGGONGYEJIANZHUKEXUEYANJIUSUOTICHUDEZHUANYONGSHIJIANYAOQIUZAI-60~+20℃XIAJINXINGCHONGJIRENXINGSHIYAN,ZAIGENJUSHIYANJIEGUOPANDUANGANGDENAIHANXINGNENG。CAIYONGJINGTAIXUANBEIWANQUJINXINGYINGLINAISHIXINGSHIYAN,GENJUBIAOZHUNGUIDING,SHIYANZAIJIDINGDEHENGFUHETIAOJIANXIA,YUDANHUAWUFEISHUI(YUE100℃)RONGYEZHONGCHIXUFANGZHI100XIAOSHI(RONGYEHAN60%DEXIAOSUANGAIHE5%DEXIAOSUANLV)。ZAICESHIJIXIANYINGLIZHI,RUODIYUTA,ZEBUHUICHUXIANFUSHIGUILIEQUEXIAN。

试验结果及讨论http://bagsbig.com/

ANSHANGSHUGONGYIQIANGHUADEXINGCAICUNZAIJIEMIANJINXIANGZUZHIBUJUNYUN,JIJINXIANGZUZHIDEGEXIANGYIXINGJUYOUZIRANHUNHECAILIAODETEDIAN。ZAIXINGCAIBIAOMIANYOUYIBODEYINGHUACENG(MEICEYUE1.0~2.0mm);ERXINGCAIZHONGXINJIAORUANBINGYOURENXING。

XIAMIANJIANGTAOLUN42CrMoHEJINGUANDEKANGCUIXINGDUANLIESHIRUHESUIZHIJINGDEBIANHUAERBIANHUADE。YONGZHONGYANGGONGYEJIANZHUKEXUEYANJIUSUONIDINGDEZHUANYONGSHIJIANZUOCHONGJIWANQUSHIYAN,YIBIANYANJIUQIANGHUAGANGJINDENAIHANXINGNENG。ZAIZHEIXIESHIJIANSHANGKEYOUCEMIANFENGLIDEQIEKOU,CONGERCHUXIANFUZAYINGLIZHUANGTAI,HOUZHEYIYUYINQICAILIAODUANLIE。ZAIZHEIZHONGQINGKUANGXIA,ZUOYONGZAISHIJIANSHANGDEDUANLIEGONGJIANGSHOUXIANYINGXIANGDAOCAILIAODEBIAOCENG。GANGJINDUANLIEDELINJIEZHUNSHUApZHENGCHANGQUAp=49J。ZHIJINGWEIl6HE25mmDEGANGJINYU-70℃LENGCHULIHOUAp>49J。ZHIJINGWEI10mmDEGANGJINZAIZHEIYIWENDUXIACHUXIANBUYINGYOUDEPIANCHA,ZHEIJIUSHISHUOZHIJING10mmDEGANGJINDENAIHANXINGHENBUJIA。ZHEIXIESHIYANSHUJUJIEGUOYUBIAOMIANYINGDUBIANHUAXIANGGUAN。

ZAIPINGGUGANGJINDEKANGYINGLIFUSHISHI,ZHEIYIQINGKUANGGENGWEIMINGXIAN。KEYIKANCHU,CAILIAOKANGYINGLIFUSHIDENENGLISUIGANGJINZHIJINGJIANXIAOERXIAJIANG。RUGUOGANGJINZHIJINGdGANGJIN≥16mmQIEQIJIXIANYINGLIZHIDADAOQUFUDIANSHUIPING,ZEGANGJINSHIJISHANGMEIYOUFUSHI,ERZHIJING10mmDEGANGJINQIJIXIANYINGLIZHIDADAO250~300MPaSHUIPING,GANGJINCHUXIANFUSHIGUILIEXIANXIANG。ZAISUOSHIYANDEGANGJINZHONG,WOMENZAOYIGUANCHADAOGANGJINGUILIEDEFAZHANXIANXIANG。BENWENDECHUDEJIEGUOZHENGMINGLEBEIGONGRENDEGUANDIAN,YOUQISHIFUSHIDUANLIEGENGMINGAN。

YANJIUKEYIQUEREN:DITANGANGZHINENGQIANGHUADAOBIAOCENGYINGDUBUCHAOGUO320I-WDESHUIPING。ZAITAOLUNSHENGCHANGONGYISHIGANGJINQIANGDUBAOZHISHUIPINGYIQUEDINGWEI:=500MPa。ZHEIYANG,42CrMoHEJINGUANSHIYONGCHANG          TIAOXUANGAOXINGNENGDEGANGJINZUIJIANDANDEJIANCEFANGFASHICELIANGQIANGHUAGANGJINDEBIAOMIANYINGDU,JIYINGDUZHIBUYINGCHAOGUO320HV。

  JIELUN

1)ZAIZHONGXIAOXINGXINGCAIYAZHISHENGCHANXIANSHANGCAIYONGWENLIUSHUILIANXUSHUICUICHULIBANFAKEYIQIANGHUA3XINGDITANGANGCAI,QIQUFUDIANKEDA500MPa。

2)ZAIXIANZHIGANGCAIBIAOMIANYINGDUZHI≤320HVTIAOJIANXIA,QUFUDIANDA≥500MPaDEGANGCAIBAOZHENGJUBEIGAODESHIYONGXINGNENGHEGONGYIXINGNENG。

 


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