GB/T 19867.4-2008 Welding procedure specification for laser beam welding
1 Scope
This part of GB/T 19867 specifies requirements for the content of welding procedure specifications for laser beam welding processes. This part is applicable to laser beam welding.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 19867. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 3375 Welding terminology
GB/T 5185 Welding and allied processes - Nomenclature of processes and reference numbers (GB/T 5185-2005, ISO 4063:1998, IDT)
GB/T 16672 Welds - Working positions-Definitions of angles of slope and rotation (GB/T 16672-1996, idt ISO 6947:1993)
GB/T 19866 Specification and qualification of welding procedures for metallic materials - General rules (GB/T 19866-2005, ISO 15607:2003, IDT)
ISO/TR 15608 Welding — Guidelines for a metallic materials grouping system
3 Terms and definitions
For the purposes of this part, the terms and definitions given in GB/T 3375 and GB/T 19866 and the following apply.
3.1
slope up
controlled increase of the beam power at the beginning of welding
3.2
slope down
controlled decrease of the beam power at the end of welding. The slope down region is the region on the workpiece in which the effects of slope down occur. It can consist of one or two areas, depending on the selected welding mode:
— in full penetration welding: a region where beam penetration is still complete; a region where penetration is partial or decreasing.
— in partial penetration welding: a region where penetration decreases continuously.
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Technical content of welding procedure specification (WPS)
Annex A (Informative) Example of a Welding Procedure Specification (WPS) for laser beam welding
Annex B (Informative) Guidelines for grouping system for steels
