GB/T 37901-2019Technical requirements for laser welding of high temperature titanium alloy (English PDF)

1 Scope

This standard specifies the general requirements, process requirements, quality requirements of welded joints, rework soldering and weld quality of high temperature titanium alloy laser welding.

Inspection and security, etc.

This standard is applicable to the evaluation and acceptance of laser welding quality of near-alpha and alpha beta high-temperature titanium alloys with thickness of 0.5mm~8.0mm.

His brand of titanium alloy can also be referred to.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 324 weld symbol notation

GB/T 2650 welded joint impact test method

GB/T 2651 welded joint tensile test method

GB/T 2653 welded joint bending test method

GB/T 2654 welded joint hardness test method

GB/T 3323 metal fusion welding joints radiography

GB/T 6417.1 metal fusion welding head defect classification and description

GB/T 9445 Non-destructive testing personnel qualification and certification

GB/T 18851.1 Non-destructive testing - Penetration testing - Part 1. General

GB/T 19867.4 laser welding process specification

GB/T 29710 Electron beam and laser welding process qualification test method

GB/T 32259 weld non-destructive testing fusion welding head visual inspection

ISO /T R15608 Guide to the Classification of Welded Metal Materials (Welding-Guidelinesforametalicmaterialsgrouping

System)

3 symbol

The following symbols apply to this document.

deltaL --- the distance between the two defects (stomata)

B --- Weld width d --- the maximum size of the lack (pore) f --- projected area ratio of pores or shrinkage holes g --- the distance from the center line of the T-joint h --- lack size (height, width)

H1, h2---weld penetration deviation l --- Shortage length (measured from any direction)

L --- Weld length […]