Preheating
Posted: Fri Oct 03, 2014 10:47 am
To all the engineers in here,
I have always operated under print specs, which often come stapled with a WPS that includes preheat temperatures, etc.. But I have been curious to know, what are the "rules" (loosely worded) to determine what needs preheat and to what temperature. Of course, there are some obvious scenarios when preheat is required, such as welding in winter wonderland with frosty the snowman looking over your shoulder, welding thick plate with large surface areas, situations where lots of heat on one end and no heat on the other end causing warp, etc..
What input can you give as a "rule" to consider when fabricating to determine preheat and to the correct temperatures?
I have always operated under print specs, which often come stapled with a WPS that includes preheat temperatures, etc.. But I have been curious to know, what are the "rules" (loosely worded) to determine what needs preheat and to what temperature. Of course, there are some obvious scenarios when preheat is required, such as welding in winter wonderland with frosty the snowman looking over your shoulder, welding thick plate with large surface areas, situations where lots of heat on one end and no heat on the other end causing warp, etc..
What input can you give as a "rule" to consider when fabricating to determine preheat and to the correct temperatures?