ZHIFENGGANGGUANJIANJIE

直缝钢管是焊缝与钢管纵向平行的钢管。通常分为公制电焊钢管、电焊薄壁管、变压器冷却油管等等。直缝焊管生产工艺简单，生产效率高，成本低，发展较快。螺旋焊管的强度一般比直缝焊管高，能用较窄的坯料生产管径较大的焊管，还可以用同样宽度的坯料生产管径不同的焊管。但是与相同长度的直缝管相比，焊缝长度增加30~100%，而且生产速度较低。

ZHIFENGGANGGUANSHENGCHANGONGYIZONGSHU

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直缝钢管埋弧焊工艺

1. BANTAN：YONGLAIZHIZAODAKOUJINGMAIHUHANZHIFENGGANGGUANDEGANGBANJINRUSHENGCHANXIANHOU，SHOUXIANJINXINGQUANBANCHAOSHENGBOJIANYAN；

2. XIANBIAN：TONGGUOXIANBIANJIDUIGANGBANLIANGBIANYUANJINXINGSHUANGMIANXIANXUE，SHIZHIDADAOYAOQIUDEBANKUAN、BANBIANPINGXINGDUHEPOKOUXINGZHUANG；

3. YUWANBIAN：LIYONGYUWANJIJINXINGBANBIANYUWAN，SHIBANBIANJUYOUFUHEYAOQIUDEQULV；

4. CHENGXING：ZAIJCOCHENGXINGJISHANGSHOUXIANJIANGYUWANHOUDEGANGBANDEYIBANJINGGUODUOCIBUJINCHONGYA，YACHENG"J"XING，ZAIJIANGGANGBANDELINGYIBANTONGYANGWANQU，YACHENG"C"XING，******XINGCHENGKAIKOUDE"O"XING

5. 预焊：使成型后的直缝焊钢管合缝并采用气体保护焊（MAG）进行连续焊接；

6. NEIHAN：CAIYONGZONGLIEDUOSIMAIHUHAN（***DUOKEWEISISI）ZAIZHIFENGGANGGUANNEICEJINXINGHANJIE；

7. WAIHAN：CAIYONGZONGLIEDUOSIMAIHUHANZAIZHIFENGMAIHUHANGANGGUANWAICEJINXINGHANJIE；

8. CHAOSHENGBOJIANYANⅠ：DUIZHIFENGHANGANGGUANNEIWAIHANFENGJIHANFENGLIANGCEMUCAIJINXING100%DEJIANCHA；

9. XSHEXIANJIANCHAⅠ：DUINEIWAIHANFENGJINXING100%DEXSHEXIANGONGYEDIANSHIJIANCHA，CAIYONGTUXIANGCHULIXITONGYIBAOZHENGTANSHANGDELINGMINDU；

10. 扩径：对埋弧焊直缝钢管全长进行扩径以提高钢管的尺寸精度，并改善钢管内应力的分布状态；

11. SHUIYASHIYAN：ZAISHUIYASHIYANJISHANGDUIKUOJINGHOUDEGANGGUANJINXINGZHUGENJIANYANYIBAOZHENGGANGGUANDADAOBIAOZHUNYAOQIUDESHIYANYALI，GAIJIJUYOUZIDONGJILUHECHUCUNGONGNENG；

12. DAOLENG：JIANGJIANYANHEGEHOUDEGANGGUANJINXINGGUANDUANJIAGONG，DADAOYAOQIUDEGUANDUANPOKOUCHICUN；

13. CHAOSHENGBOJIANYANⅡ：ZAICIZHUGENJINXINGCHAOSHENGBOJIANYANYIJIANCHAZHIFENGHANGANGGUANZAIKUOJING、SHUIYAHOUKENENGCHANSHENGDEQUEXIAN；

14. XSHEXIANJIANCHAⅡ：DUIKUOJINGHESHUIYASHIYANHOUDEGANGGUANJINXINGXSHEXIANGONGYEDIANSHIJIANCHAHEGUANDUANHANFENGPAIPIAN；

15. GUANDUANCIFENJIANYAN：JINXINGCIXIANGJIANCHAYIFAXIANGUANDUANQUEXIAN；

16. FANGFUHETUCENG：HEGEHOUDEGANGGUANGENJUYONGHUYAOQIUJINXINGFANGFUHETUCENG。

直缝钢管高频焊接工艺

GAOPINHANJIESHIGENJUDIANCIGANYINGYUANLIHEJIAOLIUDIANHEZAIDAOTIZHONGDEQUFUXIAOYING、LINJINXIAOYINGHEWOLIUREXIAOYING，SHIHANFENGBIANYUANDEGANGCAIJUBUJIAREDAORONGRONGZHUANGTAI，JINGGUNLUNDEJIYA，SHIDUIJIEHANFENGSHIXIANJINGJIANJIEHE，CONGERDADAOHANFENGHANJIEZHIMUDE。GAOPINHANSHIYIZHONGGANYINGHAN（HUOYALIJIECHUHAN），TAWUXUHANFENGTIANCHONGLIAO，WUHANJIEFEIJIAN，HANJIEREYINGXIANGQUZHAI，HANJIECHENGXINGMEIGUAN，HANJIEJIXIEXINGNENGLIANGHAODENGYOUDIAN，YINCIZAIGANGGUANDESHENGCHANZHONGSHOUDAOGUANGFANDEYINGYONG。

直缝钢管的高频焊接正是利用交流电的趋肤效应和邻近效应，钢材（带钢）经滚压成型后，形成一个截面断开的圆形管坯，在管坯内靠近感应线圈中心附近旋转一个或一组阻抗器（磁棒），阻抗器与管坯开口处形成一个电磁感应回路，在趋肤效应和邻近效应的作用下，管坯开口处边缘产生强大而集中的热效应，使焊缝边缘迅速加热到焊接所需温度经压辊挤压后，熔融状态的金属实现晶间接合，冷却后形成一条牢固的对接焊缝。

更多链接：焊管    直缝焊管   直缝钢管   大口径焊管   大口径直缝焊管    Q235B直缝焊管   Q345B直缝焊管   Q345C直缝焊管    Q355B直缝焊管    Q355C直缝焊管