{"id":902,"date":"2022-01-14T11:40:52","date_gmt":"2022-01-14T11:40:52","guid":{"rendered":"https:\/\/mewelding.com\/?p=902"},"modified":"2022-09-21T03:15:59","modified_gmt":"2022-09-21T03:15:59","slug":"heat-input-on-wps","status":"publish","type":"post","link":"https:\/\/mewelding.com\/heat-input-on-wps\/","title":{"rendered":"Practice Case 12 – Heat Input On A WPS"},"content":{"rendered":"\n
This article studies an example of two procedure qualifications with different heat inputs, qualified on different base metal thicknesses<\/a>. How does one go about when applying these PQRs to a single production weld joint. How to reckon heat input on a WPS in such situation?<\/p>\n\n\n\n Consider the following questions asked in Interpretation <\/a>IX-92-87.<\/p>\n\n\n\n \u201cBackground: Two PQRs have been qualified to support a WPS with notch toughness requirements <\/a>and having a qualified base metal thickness range from 5\/16 in. to 2 in. inclusive. One PQR was qualified on 1 in. thick material with a maximum heat input of 85000 J\/in. The second was qualified on 5\/16 in. thick material with a maximum heat input of 45000 J\/in. All other essential and supplementary essential variables<\/a> are the same.<\/p>\n\n\n\n Question (1): Is this WPS qualified for using 85000 J\/in. max. Heat input on thicknesses 5\/16 in. to 2 in.?<\/p>\n\n\n\n Question (2): Is the heat input value of 85000 J\/in. applicable to base metal thicknesses between 5\/8 in. to 2 in. and the heat input value of 45000 J\/in. applicable to base metal thicknesses between 5\/16 in. and 5\/8 in.?\u201d<\/p>\n\n\n\n Let us summarize the given information in a table for easy reference:<\/p>\n\n\n\n