what is 𝗛𝗲𝗮𝘁 𝗔𝗳𝗳𝗲𝗰𝘁𝗲𝗱 𝗭𝗼𝗻𝗲 𝗖𝗿𝗮𝗰𝗸





 what is 𝗛𝗲𝗮𝘁 𝗔𝗳𝗳𝗲𝗰𝘁𝗲𝗱 𝗭𝗼𝗻𝗲 𝗖𝗿𝗮𝗰𝗸


heat affected zone (#HAZ) of a weld is not limited to the weld itself but to the immediate area of parent material surrounding the weld. A HAZ crack can originate at the toes of the weld or a few millimeters from the weld altogether. The most common causes for this type of crack are: excess hydrogen, high residual stress levels on the weld, and high carbon content on the base material.



To minimize the susceptibility or prevent HAZ cracks consider:


1. using low hydrogen electrodes

2. pre-heating the base material

3. slow cooling the base material after welding

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