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GB/T 41477-2022Testing methods for mechanical properties of metal parts repaired by laser cladding (English PDF)

激光熔覆修复金属零部件力学性能试验方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 15, 2022

Implementation date

August 1, 2022

Scope

GB/T 41477-2022 is the English-translated version of 激光熔覆修复金属零部件力学性能试验方法.

GB/T 41477-2022 gives the methods for testing the mechanical properties of a metal part repaired by laser cladding. It sets the basic requirements, the preparation of the specimens - where they are cut so that the clad layer, the interface and the base metal are all represented - the test methods and the test report.

It applies to the tensile, impact and fatigue testing of laser clad repairs, the evidence on which a repaired part is accepted back into service. Repair shops, laboratories and the owners of the equipment being repaired use it. Issued on 15 April 2022, it has applied since 1 August 2022.

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Document preview — GB/T 41477-2022

National Standard of the People's Republic of China

ICS: 77.040.10
Classification: H 22

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 symbol
5 Basic Requirements
5.1 Test procedure
5.2 Specimen substrate
5.3 Cladding material
5.4 Process requirements
6 Sample preparation
6.1 Sample preparation method
6.2 Prototype production
7 Test method
7.1 Tensile test
7.2 Impact test
7.3 Fatigue test
8 Test report
8.1 General
8.2 Tensile test report
8.3 Impact test report
8.4 Fatigue test report
Appendix A (normative) Tensile Specimen Preparation
A.1 General Requirements
A.2 Sampling direction of the sample
A.3 Rectangular cross-section tensile test specimen
A.4 Circular cross-section tensile test specimen
Appendix B (normative) Impact test specimen preparation
B.1 General requirements
B.2 Sampling direction of the sample
B.3 Preparation of Impact Specimen for Surface Repair
Appendix C (normative) Fatigue Specimen Preparation
C.1 General Requirements
C.2 Sampling direction of the sample
C.3 Fatigue Specimen with Rectangular Cross Section
C.4 Circular cross-section fatigue specimens
Fig.3 Schematic diagram of repair thickness, repair outer surface radius, fill bevel and fill fillet of the sample

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

1 Scope

This document specifies the basic requirements, sample preparation, test methods and test reports for the mechanical properties test of metal parts repaired by laser cladding.

This document applies to the mechanical properties (tensile, impact and fatigue) tests of metal parts repaired by laser cladding (hereinafter referred to as "repair").

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 228.1-2010 Tensile test of metallic materials - Part 1: Test method at room temperature

GB/T 228.2 Tensile Test of Metallic Materials Part 2: High Temperature Test Method

GB/T 228.3 Tensile Test of Metallic Materials Part 3: Low Temperature Test Method

GB/T 229-2020 Charpy Pendulum Impact Test Method for Metal Materials

GB/T 3075-2021 Axial force control method for fatigue test of metallic materials

GB/T 29795 Laser Repair Technical Terms and Definitions

GB/T 29796 General technical specification for laser repair

3 Terms and Definitions

GB/T 228.1, GB/T 228.2, GB/T 228.3, GB/T 229, GB/T 3075, GB/T 29795, GB/T 29796 and the following terms and definitions apply to this document.

3.1 Thickness of the repaired layer

On the repaired section of the repaired component, the thickness of the repaired part accounts for the percentage of the original thickness.

Note 1.Tr=Th/Dh×100%, see Figure 1.

Note 2.hereinafter referred to as "thickness ratio".

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 22315-2026|GB/T 6396-2026|GB/T 12347-2025|GB/T 241-2025|GB/T 29459.1-2025|GB/T 29459.2-2025

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