Corrosion caused by residual stress<br>Corrosion usually occurs during manufacturing (cold working) and welding (such as arching, bending and straightening)<br>There are significant residual stresses in the steel. Coating or galvanizing protection measures, sacrificial tolerance method or<br>Other effective methods to improve the corrosion resistance of steel.<br>Where feasible, 600 º C can be considered for the position around the 150mm to 300mm of the processing part<br>Post weld heat treatment measures to 650 º C to release residual stress
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