Quick Search


Tibetan singing bowl music,sound healing, remove negative energy.

528hz solfreggio music -  Attract Wealth and Abundance, Manifest Money and Increase Luck



 
Your forum announcement here!

  Free Advertising Forums | Free Advertising Board | Post Free Ads Forum | Free Advertising Forums Directory | Best Free Advertising Methods | Advertising Forums > Free Advertising Forums Directory > Miscellaneous Forums

Miscellaneous Forums This is a list of any forum that has a free advertising section but doesnt fit into the categories above.

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-13-2011, 10:03 AM   #1
qdsk84pdyq
Major
 
Join Date: Mar 2011
Posts: 617
qdsk84pdyq is on a distinguished road
Default |清大圣科气化炉反骗子.|手工电弧焊工艺操作方法、中

起头焊缝是指刚开始焊接的部分,应该在引弧后先将电弧稍拉长,对焊缝端头进行必要的预热,然后适当缩短弧长 进行正常焊接××清大圣科×清大圣科电焊条×清大圣科电 焊条设备×清大金桥×清大金桥电焊条设备×清大圣科气化炉&time s;www.qhsk.cn×清大圣科科技有限公司××
由于药皮容易受潮,受潮后的焊条工艺性能变坏,而且水分中的氢容易使焊缝产生气孔和裂纹,故焊条使用前必须 烘干,以降低焊条的含氢量,一般采用350~450º,保温1~2小时,烘干×&t imes;清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥 ×清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn&t imes;清大圣科科技有限公司××

接头由于受焊条长度的限制,有时不能用一根焊条完成一条焊缝,要求先焊的焊缝起头处略低一些,接头时在先焊 焊缝的起头稍前处引弧,并稍微拉长电弧将电弧引向起头处,并覆盖前焊缝的端头处,待起头处焊缝焊平后再沿焊 接方向移动××清大圣科×清大圣科电焊条×清大圣科电焊 条设备×清大金桥×清大金桥电焊条设备×清大圣科气化炉&times ;www.qhsk.cn×清大圣科科技有限公司××

焊接厚度 第一层焊缝 其它各层焊缝××清大圣科×清大圣科电焊条×清大圣科电 焊条设备×清大金桥×清大金桥电焊条设备×清大圣科气化炉&time s;www.qhsk.cn×清大圣科科技有限公司××焊条直径 焊接电流(A) 焊条直径 焊接电流(A)≥6 4 160~210 4 160~2105220~280
焊第二层时,先将第一层熔渣除净,然后用直径较大的焊条和较大的焊接电流进行焊接×&time s;清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥&ti mes;清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn&time s;清大圣科科技有限公司×× 为了保证质量和防止变形,应使层与层之间的焊接方向相反,焊缝接头也应相互错开×&times ;清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥&tim es;清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn&times ;清大圣科科技有限公司××
焊缝收尾是指一条焊缝焊完时,应把收尾处的弧坑填满,如果收尾时立即拉断电弧,会形成低于焊件表面的弧坑, 过深使焊缝收尾处强度减弱,导致产生裂纹××清大圣科×清大圣科电焊 条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备&times ;清大圣科气化炉×www.qhsk.cn×清大圣科科技有限公司× × 因此在收尾时不允许有弧坑存在,应将弧坑填满为止××清大圣科×清大 圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备&t imes;清大圣科气化炉×www.qhsk.cn×清大圣科科技有限公司&ti mes;×

相关的主题文章:


焊接技术在机床行业发展的3个阶段

|清大圣科气化炉反骗子.|激光焊接技术在多方面的应用

|清大圣科气化炉反骗子.|焊接前的准备工作

|清大圣科气化炉反骗子.|电弧焊的分类和优点

|清大圣科气化炉反骗子.|专家指出做强造船焊接技术应

|清大圣科气化炉反骗子.|电弧和焊接熔滴移动的稳定性

|清大圣科气化炉反骗子.|单片机的应用领域

|清大圣科气化炉反骗子.|中、高级电焊培训学校告诉你电焊证怎么考
qdsk84pdyq is offline   Reply With Quote

Sponsored Links
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT. The time now is 03:09 PM.

 

Powered by vBulletin Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Free Advertising Forums | Free Advertising Message Boards | Post Free Ads Forum