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結(jié)構(gòu)件焊接時(shí)只有按照正確的方法，還有注意一些在操作時(shí)的注意事項(xiàng)，才能夠保證結(jié)構(gòu)件焊接的質(zhì)量，也才能夠保證結(jié)構(gòu)件焊接時(shí)的安全，因此為了能夠保證結(jié)構(gòu)件焊接順利進(jìn)行，為大家介紹結(jié)構(gòu)件焊接注意事項(xiàng)。

Only in accordance with the correct method when welding structural parts, there are some points for attention in the operation, in order to ensure the quality of structural parts welding, but also to ensure the safety of structural parts welding, so in order to ensure the smooth progress of structural parts welding, for everyone to introduce structural parts welding points for attention.

一、電弧的長(zhǎng)度

Arc length

電弧的長(zhǎng)度與焊條涂料種類(lèi)和藥皮厚度有關(guān)系。但都應(yīng)盡量采取短弧，特別是低氫焊條。電弧長(zhǎng)可能會(huì)產(chǎn)生氣孔。短弧能夠避免大氣中的O2、N2等有害氣體入侵焊縫金屬，形成氧化物等不良雜質(zhì)而影響焊縫質(zhì)量。

The length of the arc is related to the type of coating and the thickness of the coating. However, short arc should be used as much as possible, especially low hydrogen electrode. The length of the arc may produce pores. Short arc can avoid harmful gases such as O2 and N2 from atmosphere invading weld metal, forming oxide and other undesirable impurities and affecting weld quality.

二、結(jié)構(gòu)件焊接速度

Two. Welding speed of structural parts

適宜的焊接速度是以焊條直徑、涂料類(lèi)型、焊接電流、被結(jié)構(gòu)件焊接物的熱容量、結(jié)構(gòu)開(kāi)頭等條件有其相應(yīng)變化，不能作出標(biāo)準(zhǔn)的規(guī)定。保持適宜的焊接速度，熔渣能很好的覆蓋著熔潭。使熔潭內(nèi)的各種雜質(zhì)和氣體有充分浮出時(shí)間，避免形成焊縫的夾渣和氣孔。在結(jié)構(gòu)件焊接時(shí)如運(yùn)棒速度太快，結(jié)構(gòu)件焊接部位冷卻時(shí)，收縮應(yīng)力會(huì)增大，使焊縫產(chǎn)生裂縫。

Suitable welding speed is based on the electrode diameter, coating type, welding current, the heat capacity of the welded parts, the beginning of the structure and other conditions have corresponding changes, can not be standardized. To maintain proper welding speed, slag can well cover the molten pool. So that all kinds of impurities and gases in the molten pool have sufficient time to float, avoiding the formation of slag and air holes in the weld. If the moving speed of the rod is too fast, the shrinkage stress will increase and the weld cracks will occur when the welding part of the structure is cooled.