Guide to understanding Welding Procedure （了解焊接工艺指南）.pdf

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Guide to understanding Welding Procedure （了解焊接工艺指南）.pdf

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Guide to understanding Welding Procedure （了解焊接工艺指南）

An AEIS White Paper 265 Birdsall Dr. Yorktown Heights, NY 10598 914 214 8460 www.aeis.us Guide to understanding Welding Procedure Specification (WPS), Procedure Qualification Record (PQR), and Welder Performance Qualification Record (WPQR) By Nagesh Goel, Director O P –T E C H T R AI N I N G P A R T N E R CONTENTS Introduction 3 What is Welding Procedure Specification (WPS)? 3 What is Procedure Qualification Record (PQR)? 3 What information should they include? 4 What is a Prequalified WPS? 4 What are SWPSs? 4 What is Welder Performance Qualification Record (WPQR)? 5 Acceptance Standards 5 Documentation 5 PQR/ WPQR Testing 6 Weld Inspection and Testing 6 Page 2 of 6 Introduction Welding requires skill. Determining “how to weld” requires knowledge regarding the materials being welded and welding process, among numerous other factors. Because of huge number of variables involved, the knowledge of the welding engineer and the skill of the welder need to be validated by a series of tests. All this information is documented on Weld