大发快一分彩

合金钢管
专业生产经营合金钢管
公司现货资源量大、规格齐全、质优价低

12Cr1MoV合金钢管焊接工艺、焊后热处理、检验

[ 关键词:12Cr1MoV合金钢管 合金钢管的焊接工艺  发表日期:2013-11-03 ]

12Cr1MoV合金钢管的焊接工艺

  12Cr1MoV GANGZHONGDE Cr、Mo、V DENGQIANGLIEDETANHUAWUXINGCHENGYUANSUYOUSHIJIETOUGUOREQUCHAN SHENGZAIRELIEWENDEQINGXIANG。POKOUJIJIAGONGHOU(HANJIEQIAN)MT JIANCHA,WULIEWEN、WUQUEXIAN,HANQIANPOKOUJI ZHOUWEIBIAOMIANQINGLI(YOUWU、CHUXIUDENG)ZHIJIANJINSHUGUANGZE;POKOUZHUANGPEIBIMIANQIANGZHIZUDUI。

大发快一分彩  HANJIEQIANZHENGTIHUOJUBUYURE,HANFENGLIANGBIANGE 150mm FANWEINEIBAOZHENGYUREWENDU 250~300 DU;CENG JIANWENDUYINGZAIYUREWENDUKONGZHIFANWEINEI。 GTAW(CHUN Ar QITIBAOHU):JIANYICAIYONG TIG-R31(HAN V)HANSI,ZHIJING 2.5mm,DIANLIU 100~ 140A。 RUGUOYOUYIDINGBIHOU,GUANJINGBUSHIHENXIAODEHUA,JIANYICAIQU GTAW+SMAW。 SMAW:HANTIAOCAIYONG R337,GUIGEKEYIANSHIJIQINGKUANGLAIDING。 HANJIEWANCHENGHOUQINGLIFEIJIAN,JIAREZHI 350~450℃,BAOWENBINGHUANLENGDEHOURECUOSHI。 12Cr1MoV ZUIHAOCAIYONGXIANGYINGCHENGFENDENAIREGANGHANTIAO,RU R310、R312、R317、R316Fe,HAN QIANYURE 250~350℃,HANHOUHUIHUOCHULI 710~750℃。 HANBUQUEXIANHUOHANHOUBUNENGJINXINGRECHULISHI,YEKECAIYONGAOSHITIGANGHANTIAO,RU A302、A307。ZHEISHI, YOUYUHANFENGYUMUCAIPENGZHANGXISHUBUTONG,TONGSHIZAIZHANGQIGAOWENGONGZUOSHIHAIKEFASHENGTANDEKUOSANQIANYIXIANXIANG,ER YIYUDAOZHIZAIRONGHEQUFASHENGPOHUAI。SUOYI,XUANYONGAOSHITIHANTIAOSHIYAOSHENZHONG。

  12Cr1MoV ZHUGUANGTINAIREGANGGUANHANJIEGONGYI 12Cr1MoV SHIWOGUOSHIYONGGUANGFANDEZHUGUANGTINAIREGANGZHIYI,ZHUYAOYONGYUZHIZAOGUANBIWENDUXIAOYU 580℃ DEGUOLUGUOREGUAN、LIANXIANGHEZHUQIGUANDAO。ZAI 12t/h SHUANGQIBAOHENGZHISHIFEITENGLUZHIZAOGUOCHENGZHONG,GUOLUDEZHENG QICHUKOUWENDUWEI 450℃,ZUIGAOGONGZUOYALIWEI 3.8MPa,ANSHEJITUZHIYAOQIUCAIYONG 12Cr1MoV ZHUGUANGTI NAIREGANGGUAN(φ159mm×10mm)ZUOWEIGUOREQILIANXIANGGUAN,YIMANZUCHANPINDESHIYONGYAOQIU。

1 焊接性分析

  12Cr1MoV ZHUGUANGTINAIREGANGWEIDIHEJINNAIREGANG,CILEIGANGDE Cr HANLIANGJIAOGAO,ZAI 500-550℃SHI JUYOUJIAOGAODEREQIANGXINGHECHIJIUQIANGDU。12Cr1MoV GANGDEHUAXUECHENGFENJILIXUEXINGNENGJIANBIAO 1。

BIAO1 12Cr1MoV ZHUGUANGTINAIREGANGHUAXUECHENGFENHELIXUEXINGNENG

化学成分% 力学性能
C Mn Si Ci Mo V S P σb/MPa
σs/
MPa
δ5/%
0.12 0.60 0.35 1.10 0.31 0.19 0.013 0.022 436 217 22

ZHU:BIAOZHONGSHUJUWEIHANJIESHIJIANMUCAIFUYANJIEGUO YOUBIAO 1 KEJIAN,12Cr1MoV GANGDETANJIHEJINYUANSUHANLIANGJIAODUO,CUIYINGMINGANXINGJIAODA,YIZAIHANFENGJI 12Cr1MoV REYINGXIANGQUCHUXIANCUIYINGZUZHI。ZAIJIETOUGANGXINGJIYINGLIJIAODASHI,YICHANSHENGLENGLIEWEN。YOUYUGUORELIANXIANGSHIZAI JIAOGAOWENDUXIAGONGZUODESHOUYAYUANJIAN,HANJIESHIYINGCAIQUBIYAODEGONGYICUOSHI,SHIHANJIEJIETOUYOUZUGOUDEREQIANG XINGNENG,BAOZHENGGUORELIANXIANGANQUANYUNXING。

2.合金钢管焊接工艺

2.1 HANJIEFANGFA

  ZAIZHENGQIGUANDAODEGUANZIDUIJIESHI,DUIDADIHANFENGDEZHILIANGYAOQIUJIAOGAO,BUJINYAOQIUHANFENGRONGTOU、BEIMIAN QIPING,HAIYAOQIUHANFENGBEIMIANWUZHAHUOSHAOZHA,FOUZEHUIYINGXIANGSHEBEIDEANQUANYUNXING。YINCI,CAIYONGSHOUGONGWUJI YAHUHAN(TIG)DADI,SHOUGONGDIANHUHAN(SMAW)TIANCHONGHEGAIMIANDEHANJIEGONGYIFANGFA。

2.2 POKOUCHICUN

  XUANYONGDANMIAN V XINGPOKOU,POKOUCHICUNJIANTU 1。YONGJIXIEFANGFAJIAGONG,YINGYANGEKONGZHIGENBUJIANXIHEPO KOUDUNBIANCHICUN,YIQUEBAODADIHANFENGCHEDIRONGTOU。

2.3 HANJIECAILIAOXUANZE

大发快一分彩  SHOUGONGWUJIYAHUHAN(TIG)XUANYONG:TIC-R31 HANSI,HANSIZHIJINGWEI φ2.5mm。 SHOUGONGDIANHUHAN(SMAW)XUANYONG:R307(E5515-B2)HANTIAO,ZHIJINGWEI φ3.2mm、φ4mm。

2.4 HANJIEZHUNBEI

大发快一分彩2.4.1 HANQIANZHUNBEI

  1)焊前应把坡口两侧管子内外各 20~30mm 范围打磨干净,直至露出金属光泽,确 保无油渍、铁锈、水份、氧化物或其他有害的物质。
  2)氩弧焊用焊丝表面不得有油脂、铁锈等污物。电弧焊的焊条,在焊前须经 350~ 400℃烘干 1~2h,且在 120℃保温筒存放,随用随取。
大发快一分彩   3)采用 3~4 块锲形块(材料与母材相同或接近)均为分布定位焊在坡口上,对接 口必须平齐,错边量不得大于 0.5mm,定位焊的焊材及焊接参数与正式施焊相同。并且 在预热的状态下进行定位焊。

2.4.2 HANQIANYURE

  YURESHIZHUGUANGTINAIREGANGHANJIEDEZHONGYAOCUOSHI。YUREKEYIJIANMANHANFENGJIREYINGXIANGQUDELENGQUESUDU, YOULIYUBIMIANCHANSHENGCUIYINGZUZHI,YOUZHUYUHANJIEQUDEQINGDEYICHU,FANGZHICHANSHENGHANJIELIEWEN。YOUYU 12Cr1MoV GANGDETANHANLIANGJIHEJINYUANSUDEHANLIANGJIAOGAO,SUOYIXUANZEYUREWENDUWEI 200~300℃,YURE QUYUYIHANFENGWEIZHONGXIN,LIANGCEZHISHAOWEI 100mm。ZAIZHENGGEHANJIEGUOCHENGZHONG,YINGBAOCHICENGJIANWENDUBUDIYUYU REWENDU。

2.5 HANJIE

大发快一分彩2.5.1 HANJIECANSHU

  HANJIE 12Cr1MoV GANGSHI,YINGCAIYONGJIAOXIAODEHANJIEXIANNENGLIANG,YIJIANXIAOHANJIEYINGLI,JIANSHAOHANJIEGUORE QUKUANDU,XIHUAPINLI,TIGAOHANFENGJINSHUDEKANGLIEXINGNENG,HANJIECANSHUJIANBIAO 2。

BIAO2 HANJIECANSHU

焊接
方法
层次 焊材牌号 焊丝(条)
直径/mm
极性 电流I/A 电压U/V 氩气流量 Q
(L.min-1)
TIC 1 TIC-R31 2.5 直接
正接
105~125 10~12 8~10
SMAW 2 R307
(E5515-B2)
3.2 直流
反接
110~130 20~22
SMAW 3-4 R307
(E5515-B2)
4.0 直流
反接
160~180 22~24

大发快一分彩2.5.2 HANJIECAOZUO

  BUDANYAOYANGEKONGZHIHANJIEGUIFANCANSHU, ERQIEHANJIECAOZUODUIHANJIEJIETOUZHILIANG 12Cr1MoV GANGDEHANJIE, YOUZHEZHIGUANZHONGYAODEYINGXIANG。

大发快一分彩  1)YAHUHANDADIHAN。

  JIANGGUANJIANCHUYUSHUIPINGZHUANDONGWEIHANJIE,HANJIESHICAIYONGDUANHU,HANQIANGJINKENENGYUGONG JIANBIAOMIANCHUIZHI,YOULIYUYAQIDUIHANJIERONGCHIDEBAOHU。HANQIANGHEHANSIKESHAOZUOHENGXIANGBAIDONG,BAOZHENGPOKOULIANG CERONGTOU。TONGSHI,YAOKONGZHIHAORONGCHIWENDUFANGZHICHANSHENGHANCHUANHEHANLIUQUEXIAN。ZAIJIETOUBUWEI,YAOYONGSHOUTISHA LUNDAMOHUKENG,JIANGHUKENGCHUDESHOUHULIEWENHEQIKONGDENGHANJIEQUEXIANQINGCHU,RANHOUJIXUYINHUHANJIE。

  2)HANTIAODIANHUHANTIANCHONGHAN。

  YINGCAIYONGDUANHUHANJIE,QIERESHURULIANGBUYIGUODA。RUOCAIYONGZHANGHUHANJIE, BUJINHUICHUXIANDIANHURANSHAOBUWENDING、RONGSHENQIAN、RONGHUAJINSHUFEIJIANDAJIHEJINYUANSUSHAOSUNJIAJUDENGWENTI,ER QIERONGYICHANSHENGYAOBIAN、WEIHANTOUDENGQUEXIAN,TONGSHIKONGQIZHONGDE N2、O2 DENGYOUHAIQITIYIJINRURONGCHI,ZAIHAN FENGZHONGXINGCHENGQIKONGQUEXIAN。 HANJIESHIHANTIAOKEZUOXIAOYUEYAXINGYUNTIAO, ZAIPOKOULIANGCEYAOTINGLIU 0.5~1S,HANJIECENG JIANBIXUCHEDIQINGLIHANZHA,FAXIANYOUQIKONGDENGHANJIEQUEXIANSHI,YONGSHOUTISHALUNJIANGHANJIEQUEXIANCHUDIAOSHOUHUSHIBI XUJIANGHUKENGTIANMAN,YIMIANCHANSHENGHUKENGLIEWEN。GECENGJIANDEJIETOUYINGCUOKAI,BUDEYOUZHONGDIE。

  3)HANTIAODIANHUHANGAIMIANHAN。

大发快一分彩  HANJIEDIANLIUBITIANCHONGCENGSHAOXIAOXIE,YINGXUANZEZHENGQUEDEHANTIAOJIAODU,YUNTIAOYAO JUNYUN,FANGZHIZAIPOKOUBIANYUANCHANSHENGYAOBIANQUEXIAN。HANFENGYUGAOYAOKONGZHIZAI 1~3mm,BIMIANHANJIEJIETOUZAISHIYONG ZHONGCHANSHENGYINGLIJIZHONG。

3.焊后热处理

大发快一分彩  HANHOUXUJINXINGXIAOCHUYINGLIRECHULI, YIXIAOCHUHUOJIANSHAOYINGXIANGQUCHUXIANDE 12Cr1MoV GANGDEHANJIEJIETOU, CUIYINGZUZHI,ZENGJIASUXINGHERENXING,YOUXIAODIJIANSHAOHANJIECANYUYINGLI,TONGSHIYOULIYUKUOSANQINGDEYICHU,CONG ERJIANSHAOLENGLIEWENQINGXIANG。 SUOYI, HANJIEJIESHUSHI, YINGLIJICAIYONGBAOWENCAILIAOJIANGHANFENGHEJINFENGQUFUGAIBAOWEN, SHIJIETOUHUANMANLENGQUE.SUIHOU,ZAIJIANGHANJIANZHENGTIJIAREZHI 720-760℃,HENGWEN 1~2h HOU,SUILULENGQUEZHISHI WEN。

4.焊接检验

  YIZHAOSHANGSHUHANJIEGONGYIJINXINGSHIJIANHANJIE, SHIJIANJINGWAIGUANJIANCHA、 CIFENTANSHANGHE X SHEXIANTANSHANGHEGEHOU, ZAISHIJIANSHANGJIEQULIXUEXINGNENGSHIYANG、JINXIANGJIANYANSHIYANGJINXINGJIANYAN。JIANYANJIEGUOJIANBIAO 3。

BIAO3 JIETOULIXUEXINGNENG

接头力学性能 金相组织
σb/MPa
σs/ MPa
断裂部位 90°面弯 90°背弯 焊缝 热影响区 母材
536 388 母材 完好 完好 铁素体+
回火索氏体
少量魏氏体+铁素
体+回火索氏体
铁素体+
珠光休

5 结论

1)12Cr1MoV 珠光体耐热钢管焊接必须控制好焊前预热、焊接规范参数、焊后热处 理等环节。
大发快一分彩 2)12Cr1MoV 珠光体耐热钢管采用手工钨极氩弧焊(TIG)打底,手工电弧焊(SMAW) 填充和盖面的焊接工艺是可行的,焊接接头能满足设备的使用要求。

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