Vedant Singh 1 Questions 0 Answers 0 Best Answers 30 Points View Profile Vedant Singh Level 1 Asked: November 12In: Technology Which of the welding has highest HAZ? Report 2 Answers Recent Voted Ravi Ranji 0 Questions 2 Answers 0 Best Answers 34 Points View Profile Ravi Ranji Level 1 Added an answer on January 4 at 1:47 am There are two reasons behind for higher HAZ Heat input rate Speed of welding You doing welding in ATM temp , that mean NORMALIZING process. Case 1 If heat input rate is High with constant speed HAZ is High Compare to lower heat input rate Case 2 If heat input rate is constant but speed of welding is less then optimum speed of this heat input rate HAZ is High These conditions only HAZ can developed drastically So it’s not depend upon welding process , it’s depends only size of weld bead , and skilled labour 0 Reply Share Share Share on Facebook Share on WhatsApp Share on Twitter Share on Google plus Varun Engineer 0 Questions 21 Answers 0 Best Answers 294 Points View Profile Nadeem Level 6 Engineer Added an answer on November 18 at 9:30 pm The heat-affected zone (HAZ) is the area of base material, either a metal or a thermoplastic, which is not melted but has had its microstructure and properties altered by welding or heat intensive cutting operations. -1 Reply Share Share Share on Facebook Share on WhatsApp Share on Twitter Share on Google plus ✍ ☞ Can you answer this question? People are searching for a better answer to this question. ☟✍Cancel reply📍💬 You must 🔏 Login or 📝 Register to add a new answer.