Tig Welding Low alloy High Strength Steel part 2 скачать в хорошем качестве

Tig Welding Low alloy High Strength Steel part 2

http://www.weldmongerstore.com/tig-fi... http://www.weldingtipsandtricks.com/c... this is part 2 on tig welding low alloy high strength steel parts. it includes a review on part 1 where a 500f preheat was used to slow the cooling rate. Part 2 is the second TIG pass and a discussion of preheat and interpass temperature requirements. The interpass temp requirements for carbon and low alloy steels is different from stainless. With carbon steel and low alloy high strength steels, a minimum preheat and minimum interpass temperature is called for. With stainless, the objective is to limit the time at elevated temperatures so no preheat and a maximum preheat temp of 250 or 350f is common. It wont hurt to let it cool a lot more on stainless steels.