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試述手工電弧焊的安全操作技術?

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正確答案:

(1) 注意空載電壓不超過額定值,既:交流60V,直流 90V

(2) 清除焊渣應帶防護鏡

(3) 人多的施工區應設置遮度板,防止戶弧光輻射

(4) 帶有焊條的焊鉗不可隨意放置

(5) 不隨便扔焊條頭,應集中堆放。特別注意防火

(6) 焊接有色金屬,鍍鋅管或合金時,應帶口罩防止氧化鋅吸入體內

(7) 工作結束應清理場地、工具等,并切斷電源

(8) 焊機外殼接地

(9) 焊件需要草木灰保溫緩冷時,應注意周圍物件,防止著火

(10) 移動焊機或調換接線要斷開電源

(11) 容器內施焊,外面要人監護

(12) 焊補盛裝易燃易爆介質容器或管道時要置換合格,打開所有蓋

答案解析:

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焊接接頭的基本形式可分對接接頭、()、()、()。

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