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幸运飞艇9码杀号技巧 > 幸运飞艇9码杀号技巧 > 精密无缝钢管 > 正文

精密无缝钢管的焊接重要性

文章来源:http://ymkyh.cn  更新时间:2019-5-13 16:11:13

  YI、QIANTIJIUYAODAMO

幸运飞艇9码杀号技巧  DANSHIBIXUBAHANJIECHUDEDUXINCENGDAMODIAO,FOUZEHUICHANSHENGQIPAO、SHAYAN、JIAHANDENG。HAIHUISHIHANFENGBIANCUI,GANGXINGXIAJIANG。

  二、精密无缝钢管的焊接特点

  精密无缝钢管幸运飞艇9码杀号技巧一般是在低碳钢外镀一层锌,镀锌层一般在20um厚。锌的熔点在419°C,沸点908°C左右。在焊接中,锌熔化成液体浮在熔池表面或在焊缝根部位置。锌在铁中具有较大固溶度,锌液体会沿晶界深入浸蚀焊缝金属,低熔点锌形成“液体金属脆化”。

  TONGSHI,XINYUTIEKEXINGCHENGJINSHUJIANCUIXINGHUAHEWU,ZHEIXIECUIXINGXIANGSHIHANFENGJINSHUSUXINGJIANGDI,ZAILAYINGLIZUOYONGXIAERCHANSHENGLIEWEN。

  如果焊接角焊缝,尤其是T形接头的角焊缝***容易产生穿透裂纹。精密无缝钢管焊接时,坡口表面及边缘处的锌层,在电弧热作用下,产生氧化、熔化、蒸发以至挥发出白色烟尘和蒸汽,极易引起焊缝气孔。

  YOUYUYANGHUAERXINGCHENGDEZnO,QIRONGDIANJIAOGAO,YUE1800°CYISHANG,RUOZAIHANJIEGUOCHENGZHONGCANSHUPIANXIAO,JIANGYINQIZnOJIAZHA,TONGSHI。YOUYUZnCHENGWEITUOYANGJI。CHANSHENGFeO-MnOHUOFeO-MnO-SiO2DIRONGDIANYANGHUAWUJIAZHA。QICI,YOUYUXINDEZHENGFA,HUIFACHUDALIANGDEBAISEYANCHEN,DUIRENTIYOUCIJI、SHANGHAIZUOYONG,YINCI,BIXUBAHANJIECHUDEDUXINCENGDAMOCHULIDIAO。

  SAN、HANJIEGONGYIKONGZHI

  JINGMIWUFENGGANGGUANDEHANQIANZHUNBEIYUYIBANDEDITANGANGSHIXIANGTONGDE,XUYAOZHUYIDESHIYAORENZHENCHULIHAOPOKOUCHICUNHEFUJINDEDUXINCENG。WEILEHANTOU,POKOUCHICUNYAOSHIDANG,YIBAN60~65°,YAOLIUYOUYIDINGDEJIANXI,YIBANWEI1.5~2.5mm;WEILEJIANSHAOXINDUIHANFENGDESHENTOU,ZAIHANZHIQIAN,KEJIANGPOKOUNEIDEDUXINCENGQINGCHUYIHOUZAIHAN。

  ZAISHIJIJIANLIGONGZUOZHONG,CAIYONGLEJIZHONGDAPOKOU,BULIUDUNBIANGONGYIJINXINGJIZHONGKONGZHI,LIANGCENGHANJIEGONGYI,JIANSHAOLEWEIHANTOUDEKENENGXING。

  HANTIAOYINGGENJUDUXINGUANDEJITICAIZHIXUANYONG,YIBANDITANGANGYOUYUKAOLVYICAOZUOXING,XUANYONGJ422JIAOWEIPUBIAN。

幸运飞艇9码杀号技巧  HANJIESHOUFA:ZAIHANDUOCENGHANDEDIYICENGHANFENGSHI,JINLIANGSHIXINCENGRONGHUABINGSHIZHIQIHUA、ZHENGFAERYICHUHANFENG,KEDADAJIANSHAOYETIXINLIUZAIHANFENGZHONG。

  ZAIHANJIAOHANFENGSHI,TONGYANGZAIDIYICENGJINLIANGSHIXINCENGRONGHUABINGSHIZHIQIHUA、ZHENGFAERYICHUHANFENG,QIFANGFASHIXIANJIANGHANTIAODUANBUXIANGQIANYICHUYUE5~7mmZUOYOU,DANGSHIXINCENGRONGHUAHOUZAIHUIDAOYUANLAIWEIZHIJIXUXIANGQIANSHIHAN。

幸运飞艇9码杀号技巧  ZAIHENGHANHELIHANSHI,RUXUANYONGDUANZHAHANTIAORUJ427,YAOBIANQINGXIANGHUIHENXIAO;RUGUOCAIYONGQIANHOUWANGFANYUNTIAOJISHU,GENGKEYIDEDAOWUQUEXIANDEHANJIEZHILIANG。


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