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Old 06-15-2011, 01:59 PM   #1
qdsk84pdyq
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Default |清大圣科气化炉反骗子 .|无缝焊接的基本原理

气体保护焊,可以按电极的状态、操作方式、保护气体种类、电特性、极性、适用范围等不同加以分类,常用气体 保护焊分类见表3-14。××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×w ww.qhsk.cn×清大圣科科技有限公司××   
根据具体情况的不同,气体保护焊可采用不同的气体,常用的保护气体有二氧化碳、氩气、氦气、氢气及混合气体 。××清大圣科×清大圣科电焊条×清大圣科电焊条设备& times;清大金桥×清大金桥电焊条设备×清大圣科气化炉×www .qhsk.cn×清大圣科科技有限公司××
气体保护焊的优点是:电弧线性好,对中容易,易实现全位置焊接和自动焊接;电弧热量集中,熔池小,焊接速度 快,热影响区较窄,焊件变形小,抗裂能力强,焊缝质量好。××清大圣科&time s;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×清大圣科科技有限公 司××
在焊接过程中,保护气体在电弧周围造成气体保护层,将电弧、熔池与空气隔开,防止有害气体的影响,并保证电 弧稳定燃烧。××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××
缺点是不宜在有风的场地施焊,电弧光辐射较强。××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&ti mes;清大圣科气化炉×www.qhsk.cn×清大圣科科技有限公司&tim es;×本节着重介绍氩弧焊和二氧化碳气体保护电弧焊。××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×清大圣科 科技有限公司××
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