当前位置: 首页 » 技术知识 » 焊接技术 » 正文

焊接小课堂之焊接手法

放大字体  缩小字体 发布日期:2018-08-20
 平焊为避免产生焊缝单边、咬边、顶角焊不透或焊缝夹渣等缺陷,应根据两板的厚薄来调整焊条的角度,同时电弧要偏向厚板一边,以便使两边熔透均匀。

 

cription-url="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMCAibtHzSzFAwcfBDodCjo0jXLvFfj4RG0D79vwEib2t3mmquHzAnL7Rg/0?wx_fmt=jpeg" data-copyright="0" data-ratio="1.18125" data-s="300,640" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMCAibtHzSzFAwcfBDodCjo0jXLvFfj4RG0D79vwEib2t3mmquHzAnL7Rg/640?wx_fmt=jpeg" data-type="jpeg" data-w="480" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMCAibtHzSzFAwcfBDodCjo0jXLvFfj4RG0D79vwEib2t3mmquHzAnL7Rg/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; width: 613px; visibility: visible !important;" alt="" />

cription-url="http://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/0?wx_fmt=gif" data-ratio="0.45454545454545453" data-src="https://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/640?wx_fmt=gif" data-type="gif" data-w="22" title="音符" _width="100%" src="http://51waixie.cn/file/upload/201808/20/112305721.gif" data-order="1" style="margin: 0px; padding: 0px; height: 15px !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; border-width: 0px; border-style: none; border-color: initial; width: 33px !important;" alt="" />

焊条倾角过大或过小都会使焊缝成形不良。立焊忌使用较大的电流和过长的电弧立焊时,使用电流过大或焊条向前移动速度太慢,会使熔池过热,金属液不能很快凝固,将导致焊缝咬边或产生焊瘤;电弧过长、电流太小,会使熔池温过低,产生夹渣和末焊透缺陷。因此,立焊应采用适当的运条角度和适宜的运条方法,使用较小的电流,短弧焊接,以利焊缝成形。

 

cription-url="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMSVVNvuK5gYlhNwvyeUJR3GI4KyaCx4kzs9iat2lKwJq3rpgGWepHKwA/0?wx_fmt=jpeg" data-copyright="0" data-ratio="0.49833333333333335" data-s="300,640" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMSVVNvuK5gYlhNwvyeUJR3GI4KyaCx4kzs9iat2lKwJq3rpgGWepHKwA/640?wx_fmt=jpeg" data-type="jpeg" data-w="600" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMSVVNvuK5gYlhNwvyeUJR3GI4KyaCx4kzs9iat2lKwJq3rpgGWepHKwA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; width: 613px; visibility: visible !important;" alt="" />

cription-url="http://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/0?wx_fmt=gif" data-ratio="0.45454545454545453" data-src="https://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/640?wx_fmt=gif" data-type="gif" data-w="22" title="音符" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1" data-order="2" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; border-width: 0px; border-style: none; border-color: initial; width: 22px; visibility: visible !important;" alt="" />

横焊时不得减弱电弧对熔滴的承托作用横焊时,熔化金属在重力作用下发生流淌,操作不当易在上侧产生咬边,下侧因熔滴堆积而产生焊瘤或未焊透缺陷。施焊时应选择较小直径的焊条,配合恰当的焊条角度和运条方法,以短路过渡形式进行焊接。多道焊接运条的角度还应针对焊缝所在位置,适当改变焊条角度,以使电弧推力对熔滴产生承托作用,才能获得高质量的焊缝。

 

cription-url="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMXr91plEVTGKQDDH9S09dqWMicjsXNziaDldhYd4WHibvYaAxTveomibCbQ/0?wx_fmt=jpeg" data-copyright="0" data-ratio="0.5983333333333334" data-s="300,640" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMXr91plEVTGKQDDH9S09dqWMicjsXNziaDldhYd4WHibvYaAxTveomibCbQ/640?wx_fmt=jpeg" data-type="jpeg" data-w="600" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMXr91plEVTGKQDDH9S09dqWMicjsXNziaDldhYd4WHibvYaAxTveomibCbQ/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; width: 613px; visibility: visible !important;" alt="" />

cription-url="http://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/0?wx_fmt=gif" data-ratio="0.45454545454545453" data-src="https://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/640?wx_fmt=gif" data-type="gif" data-w="22" title="音符" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_gif/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMC1wvmoibQHZNxQEwuFIEe3zuENsLv3szY7dWC4wmh9DHMcvlclESQwA/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1" data-order="3" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; border-width: 0px; border-style: none; border-color: initial; width: 22px; visibility: visible !important;" alt="" />

仰焊忌用长弧施焊仰焊时,熔池倒悬在焊件下面,焊缝戍形困难,容易在焊缝表面产生焊瘤,背面产生塌陷。焊接时,为使熔滴金属在短时间内内焊条过渡到熔池中去,必须使用最短的电弧长度、较小直径的焊条、稍快的焊接速度及合适的焊接电流;多层次焊接时,可采用月牙形和锯齿形运条方式焊接。为控制熔池面积,摆幅不宜太大,焊道应薄一些,以防止产生焊接缺陷。

 

cription-url="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMYQQqoBxFQSu8TOiaiasiaQ4Ya0ib1z4gicov2jcI5uMlNciaVdsBrt5BENQA/0?wx_fmt=jpeg" data-copyright="0" data-ratio="1.1723356009070294" data-s="300,640" data-src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMYQQqoBxFQSu8TOiaiasiaQ4Ya0ib1z4gicov2jcI5uMlNciaVdsBrt5BENQA/640?wx_fmt=jpeg" data-type="jpeg" data-w="441" _width="100%" src="https://mmbiz.qpic.cn/mmbiz_jpg/hlZiaPwiag1gXZXbrMRXC2IISq3o1Yw5MMYQQqoBxFQSu8TOiaiasiaQ4Ya0ib1z4gicov2jcI5uMlNciaVdsBrt5BENQA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1" data-fail="0" style="margin: 0px; padding: 0px; height: auto !important; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; width: 613px; visibility: visible !important;" alt="" />


特别提示:本信息由相关企业自行提供,真实性未证实,仅供参考。请谨慎采用,风险自负。


[ 技术知识搜索 ]  [ 加入收藏 ]  [ 告诉好友 ]  [ 打印本文 ]  [ 违规举报 ]  [ 关闭窗口 ]