In the manufacturing process of wind power tower, welding is a very important process. Качество сварки напрямую влияет на качество производства башни. Следовательно, необходимо понять причины дефектов сварки и различные меры профилактики.

1. воздушное отверстие и включение шлака

беременный Члолочные сварки и потоки должны использоваться и полностью высушить.
в DC reverse connection and short arc welding shall be adopted.

беременный Certain alloy elements are added to reduce columnar crystals and segregation. For example, aluminum and iron can refine grains.
в The weld with shallow penetration shall be used to improve the heat dissipation condition so that the low melting point material floats on the weld surface and does not exist in the weld.
дюймовый Сварные характеристики должны быть разумно отобраны, а предварительное нагревание и последующее сочинение должно быть принято для снижения скорости охлаждения.
эн. Adopt reasonable assembly sequence to reduce welding stress.

а Pay attention to the strengthening effect of metallurgical elements and their influence on reheat cracks.
беременный Reasonably preheat or use afterheat to control the cooling rate.
в Reduce residual stress to avoid stress concentration.
дюймовый During tempering, avoid the sensitive temperature zone of reheat cracks or shorten the residence time in this temperature zone.

беременный The preheating temperature shall be increased, the post heating measures shall be taken, and the interpass temperature shall not be less than the preheating temperature. The reasonable welding specification shall be selected to avoid brittle and hard structures in the weld.
в Select reasonable welding sequence to reduce welding deformation and welding stress.
дюймовый Conduct hydrogen elimination heat treatment in time after welding